Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

8 files changed, 7303 insertions, 0 deletions

diff --git a/arch/ppc/8xx_io/Kconfig b/arch/ppc/8xx_io/Kconfig
new file mode 100644
index 0000000..9e2227e
--- /dev/null
+++ b/arch/ppc/8xx_io/Kconfig
@@ -0,0 +1,138 @@
+#
+# MPC8xx Communication options
+#
+
+menu "MPC8xx CPM Options"
+	depends on 8xx
+
+config SCC_ENET
+	bool "CPM SCC Ethernet"
+	depends on NET_ETHERNET
+	help
+	  Enable Ethernet support via the Motorola MPC8xx serial
+	  communications controller.
+
+choice
+	prompt "SCC used for Ethernet"
+	depends on SCC_ENET
+	default SCC1_ENET
+
+config SCC1_ENET
+	bool "SCC1"
+	help
+	  Use MPC8xx serial communications controller 1 to drive Ethernet
+	  (default).
+
+config SCC2_ENET
+	bool "SCC2"
+	help
+	  Use MPC8xx serial communications controller 2 to drive Ethernet.
+
+config SCC3_ENET
+	bool "SCC3"
+	help
+	  Use MPC8xx serial communications controller 3 to drive Ethernet.
+
+endchoice
+
+config FEC_ENET
+	bool "860T FEC Ethernet"
+	depends on NET_ETHERNET
+	help
+	  Enable Ethernet support via the Fast Ethernet Controller (FCC) on
+	  the Motorola MPC8260.
+
+config USE_MDIO
+	bool "Use MDIO for PHY configuration"
+	depends on FEC_ENET
+	help
+	  On some boards the hardware configuration of the ethernet PHY can be
+	  used without any software interaction over the MDIO interface, so
+	  all MII code can be omitted. Say N here if unsure or if you don't
+	  need link status reports.
+
+config  FEC_AM79C874
+	bool "Support AMD79C874 PHY"
+	depends on USE_MDIO
+
+config FEC_LXT970
+	bool "Support LXT970 PHY"
+	depends on USE_MDIO
+
+config FEC_LXT971
+	bool "Support LXT971 PHY"
+	depends on USE_MDIO
+	
+config FEC_QS6612
+	bool "Support QS6612 PHY"
+	depends on USE_MDIO
+	
+config ENET_BIG_BUFFERS
+	bool "Use Big CPM Ethernet Buffers"
+	depends on NET_ETHERNET
+	help
+	  Allocate large buffers for MPC8xx Etherenet.  Increases throughput
+	  and decreases the likelihood of dropped packets, but costs memory.
+
+config HTDMSOUND
+	bool "Embedded Planet HIOX Audio"
+	depends on SOUND=y
+
+# This doesn't really belong here, but it is convenient to ask
+# 8xx specific questions.
+comment "Generic MPC8xx Options"
+
+config 8xx_COPYBACK
+	bool "Copy-Back Data Cache (else Writethrough)"
+	help
+	  Saying Y here will cause the cache on an MPC8xx processor to be used
+	  in Copy-Back mode.  If you say N here, it is used in Writethrough
+	  mode.
+
+	  If in doubt, say Y here.
+
+config 8xx_CPU6
+	bool "CPU6 Silicon Errata (860 Pre Rev. C)"
+	help
+	  MPC860 CPUs, prior to Rev C have some bugs in the silicon, which
+	  require workarounds for Linux (and most other OSes to work).  If you
+	  get a BUG() very early in boot, this might fix the problem.  For
+	  more details read the document entitled "MPC860 Family Device Errata
+	  Reference" on Motorola's website.  This option also incurs a
+	  performance hit.
+
+	  If in doubt, say N here.
+
+choice
+	prompt "Microcode patch selection"
+	default NO_UCODE_PATCH
+	help
+	  Help not implemented yet, coming soon.
+
+config NO_UCODE_PATCH
+	bool "None"
+
+config USB_SOF_UCODE_PATCH
+	bool "USB SOF patch"
+	help
+	  Help not implemented yet, coming soon.
+
+config I2C_SPI_UCODE_PATCH
+	bool "I2C/SPI relocation patch"
+	help
+	  Help not implemented yet, coming soon.
+
+config I2C_SPI_SMC1_UCODE_PATCH
+	bool "I2C/SPI/SMC1 relocation patch"
+	help
+	  Help not implemented yet, coming soon.
+
+endchoice
+
+config UCODE_PATCH
+	bool
+	default y
+	depends on !NO_UCODE_PATCH
+
+endmenu
+
diff --git a/arch/ppc/8xx_io/Makefile b/arch/ppc/8xx_io/Makefile
new file mode 100644
index 0000000..d876018
--- /dev/null
+++ b/arch/ppc/8xx_io/Makefile
@@ -0,0 +1,10 @@
+#
+# Makefile for the linux MPC8xx ppc-specific parts of comm processor
+#
+
+obj-y			:= commproc.o
+
+obj-$(CONFIG_FEC_ENET)	+= fec.o
+obj-$(CONFIG_SCC_ENET)	+= enet.o
+obj-$(CONFIG_UCODE_PATCH) += micropatch.o
+obj-$(CONFIG_HTDMSOUND) += cs4218_tdm.o
diff --git a/arch/ppc/8xx_io/commproc.c b/arch/ppc/8xx_io/commproc.c
new file mode 100644
index 0000000..0cc2e7a
--- /dev/null
+++ b/arch/ppc/8xx_io/commproc.c
@@ -0,0 +1,464 @@
+/*
+ * General Purpose functions for the global management of the
+ * Communication Processor Module.
+ * Copyright (c) 1997 Dan Malek (dmalek@jlc.net)
+ *
+ * In addition to the individual control of the communication
+ * channels, there are a few functions that globally affect the
+ * communication processor.
+ *
+ * Buffer descriptors must be allocated from the dual ported memory
+ * space.  The allocator for that is here.  When the communication
+ * process is reset, we reclaim the memory available.  There is
+ * currently no deallocator for this memory.
+ * The amount of space available is platform dependent.  On the
+ * MBX, the EPPC software loads additional microcode into the
+ * communication processor, and uses some of the DP ram for this
+ * purpose.  Current, the first 512 bytes and the last 256 bytes of
+ * memory are used.  Right now I am conservative and only use the
+ * memory that can never be used for microcode.  If there are
+ * applications that require more DP ram, we can expand the boundaries
+ * but then we have to be careful of any downloaded microcode.
+ */
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <asm/mpc8xx.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/8xx_immap.h>
+#include <asm/commproc.h>
+#include <asm/io.h>
+#include <asm/tlbflush.h>
+#include <asm/rheap.h>
+
+extern int get_pteptr(struct mm_struct *mm, unsigned long addr, pte_t **ptep);
+
+static void m8xx_cpm_dpinit(void);
+static	uint	host_buffer;	/* One page of host buffer */
+static	uint	host_end;	/* end + 1 */
+cpm8xx_t	*cpmp;		/* Pointer to comm processor space */
+
+/* CPM interrupt vector functions.
+*/
+struct	cpm_action {
+	void	(*handler)(void *, struct pt_regs * regs);
+	void	*dev_id;
+};
+static	struct	cpm_action cpm_vecs[CPMVEC_NR];
+static	irqreturn_t cpm_interrupt(int irq, void * dev, struct pt_regs * regs);
+static	irqreturn_t cpm_error_interrupt(int irq, void *dev, struct pt_regs * regs);
+static	void	alloc_host_memory(void);
+/* Define a table of names to identify CPM interrupt handlers in
+ * /proc/interrupts.
+ */
+const char *cpm_int_name[] =
+	{ "error",	"PC4",		"PC5",		"SMC2",
+	  "SMC1",	"SPI",		"PC6",		"Timer 4",
+	  "",		"PC7",		"PC8",		"PC9",
+	  "Timer 3",	"",		"PC10",		"PC11",
+	  "I2C",	"RISC Timer",	"Timer 2",	"",
+	  "IDMA2",	"IDMA1",	"SDMA error",	"PC12",
+	  "PC13",	"Timer 1",	"PC14",		"SCC4",
+	  "SCC3",	"SCC2",		"SCC1",		"PC15"
+	};
+
+static void
+cpm_mask_irq(unsigned int irq)
+{
+	int cpm_vec = irq - CPM_IRQ_OFFSET;
+
+	((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr &= ~(1 << cpm_vec);
+}
+
+static void
+cpm_unmask_irq(unsigned int irq)
+{
+	int cpm_vec = irq - CPM_IRQ_OFFSET;
+
+	((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr |= (1 << cpm_vec);
+}
+
+static void
+cpm_ack(unsigned int irq)
+{
+	/* We do not need to do anything here. */
+}
+
+static void
+cpm_eoi(unsigned int irq)
+{
+	int cpm_vec = irq - CPM_IRQ_OFFSET;
+
+	((immap_t *)IMAP_ADDR)->im_cpic.cpic_cisr = (1 << cpm_vec);
+}
+
+struct hw_interrupt_type cpm_pic = {
+	.typename	= " CPM      ",
+	.enable		= cpm_unmask_irq,
+	.disable	= cpm_mask_irq,
+	.ack		= cpm_ack,
+	.end		= cpm_eoi,
+};
+
+extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
+
+void
+m8xx_cpm_reset(uint bootpage)
+{
+	volatile immap_t	 *imp;
+	volatile cpm8xx_t	*commproc;
+	pte_t *pte;
+
+	imp = (immap_t *)IMAP_ADDR;
+	commproc = (cpm8xx_t *)&imp->im_cpm;
+
+#ifdef CONFIG_UCODE_PATCH
+	/* Perform a reset.
+	*/
+	commproc->cp_cpcr = (CPM_CR_RST | CPM_CR_FLG);
+
+	/* Wait for it.
+	*/
+	while (commproc->cp_cpcr & CPM_CR_FLG);
+
+	cpm_load_patch(imp);
+#endif
+
+	/* Set SDMA Bus Request priority 5.
+	 * On 860T, this also enables FEC priority 6.  I am not sure
+	 * this is what we realy want for some applications, but the
+	 * manual recommends it.
+	 * Bit 25, FAM can also be set to use FEC aggressive mode (860T).
+	 */
+	imp->im_siu_conf.sc_sdcr = 1;
+
+	/* Reclaim the DP memory for our use. */
+	m8xx_cpm_dpinit();
+
+	/* get the PTE for the bootpage */
+	if (!get_pteptr(&init_mm, bootpage, &pte))
+	       panic("get_pteptr failed\n");
+																							
+	/* and make it uncachable */
+	pte_val(*pte) |= _PAGE_NO_CACHE;
+	_tlbie(bootpage);
+
+	host_buffer = bootpage;
+	host_end = host_buffer + PAGE_SIZE;
+
+	/* Tell everyone where the comm processor resides.
+	*/
+	cpmp = (cpm8xx_t *)commproc;
+}
+
+/* We used to do this earlier, but have to postpone as long as possible
+ * to ensure the kernel VM is now running.
+ */
+static void
+alloc_host_memory(void)
+{
+	dma_addr_t	physaddr;
+
+	/* Set the host page for allocation.
+	*/
+	host_buffer = (uint)dma_alloc_coherent(NULL, PAGE_SIZE, &physaddr,
+			GFP_KERNEL);
+	host_end = host_buffer + PAGE_SIZE;
+}
+
+/* This is called during init_IRQ.  We used to do it above, but this
+ * was too early since init_IRQ was not yet called.
+ */
+static struct irqaction cpm_error_irqaction = {
+	.handler = cpm_error_interrupt,
+	.mask = CPU_MASK_NONE,
+};
+static struct irqaction cpm_interrupt_irqaction = {
+	.handler = cpm_interrupt,
+	.mask = CPU_MASK_NONE,
+	.name = "CPM cascade",
+};
+
+void
+cpm_interrupt_init(void)
+{
+	int i;
+
+	/* Initialize the CPM interrupt controller.
+	*/
+	((immap_t *)IMAP_ADDR)->im_cpic.cpic_cicr =
+	    (CICR_SCD_SCC4 | CICR_SCC_SCC3 | CICR_SCB_SCC2 | CICR_SCA_SCC1) |
+		((CPM_INTERRUPT/2) << 13) | CICR_HP_MASK;
+	((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr = 0;
+
+        /* install the CPM interrupt controller routines for the CPM
+         * interrupt vectors
+         */
+        for ( i = CPM_IRQ_OFFSET ; i < CPM_IRQ_OFFSET + NR_CPM_INTS ; i++ )
+                irq_desc[i].handler = &cpm_pic;
+
+	/* Set our interrupt handler with the core CPU.	*/
+	if (setup_irq(CPM_INTERRUPT, &cpm_interrupt_irqaction))
+		panic("Could not allocate CPM IRQ!");
+
+	/* Install our own error handler. */
+	cpm_error_irqaction.name = cpm_int_name[CPMVEC_ERROR];
+	if (setup_irq(CPM_IRQ_OFFSET + CPMVEC_ERROR, &cpm_error_irqaction))
+		panic("Could not allocate CPM error IRQ!");
+
+	((immap_t *)IMAP_ADDR)->im_cpic.cpic_cicr |= CICR_IEN;
+}
+
+/*
+ * Get the CPM interrupt vector.
+ */
+int
+cpm_get_irq(struct pt_regs *regs)
+{
+	int cpm_vec;
+
+	/* Get the vector by setting the ACK bit and then reading
+	 * the register.
+	 */
+	((volatile immap_t *)IMAP_ADDR)->im_cpic.cpic_civr = 1;
+	cpm_vec = ((volatile immap_t *)IMAP_ADDR)->im_cpic.cpic_civr;
+	cpm_vec >>= 11;
+
+	return cpm_vec;
+}
+
+/* CPM interrupt controller cascade interrupt.
+*/
+static	irqreturn_t
+cpm_interrupt(int irq, void * dev, struct pt_regs * regs)
+{
+	/* This interrupt handler never actually gets called.  It is
+	 * installed only to unmask the CPM cascade interrupt in the SIU
+	 * and to make the CPM cascade interrupt visible in /proc/interrupts.
+	 */
+	return IRQ_HANDLED;
+}
+
+/* The CPM can generate the error interrupt when there is a race condition
+ * between generating and masking interrupts.  All we have to do is ACK it
+ * and return.  This is a no-op function so we don't need any special
+ * tests in the interrupt handler.
+ */
+static	irqreturn_t
+cpm_error_interrupt(int irq, void *dev, struct pt_regs *regs)
+{
+	return IRQ_HANDLED;
+}
+
+/* A helper function to translate the handler prototype required by
+ * request_irq() to the handler prototype required by cpm_install_handler().
+ */
+static irqreturn_t
+cpm_handler_helper(int irq, void *dev_id, struct pt_regs *regs)
+{
+	int cpm_vec = irq - CPM_IRQ_OFFSET;
+
+	(*cpm_vecs[cpm_vec].handler)(dev_id, regs);
+
+	return IRQ_HANDLED;
+}
+
+/* Install a CPM interrupt handler.
+ * This routine accepts a CPM interrupt vector in the range 0 to 31.
+ * This routine is retained for backward compatibility.  Rather than using
+ * this routine to install a CPM interrupt handler, you can now use
+ * request_irq() with an IRQ in the range CPM_IRQ_OFFSET to
+ * CPM_IRQ_OFFSET + NR_CPM_INTS - 1 (16 to 47).
+ *
+ * Notice that the prototype of the interrupt handler function must be
+ * different depending on whether you install the handler with
+ * request_irq() or cpm_install_handler().
+ */
+void
+cpm_install_handler(int cpm_vec, void (*handler)(void *, struct pt_regs *regs),
+		    void *dev_id)
+{
+	int err;
+
+	/* If null handler, assume we are trying to free the IRQ.
+	*/
+	if (!handler) {
+		free_irq(CPM_IRQ_OFFSET + cpm_vec, dev_id);
+		return;
+	}
+
+	if (cpm_vecs[cpm_vec].handler != 0)
+		printk(KERN_INFO "CPM interrupt %x replacing %x\n",
+			(uint)handler, (uint)cpm_vecs[cpm_vec].handler);
+	cpm_vecs[cpm_vec].handler = handler;
+	cpm_vecs[cpm_vec].dev_id = dev_id;
+
+	if ((err = request_irq(CPM_IRQ_OFFSET + cpm_vec, cpm_handler_helper,
+					0, cpm_int_name[cpm_vec], dev_id)))
+		printk(KERN_ERR "request_irq() returned %d for CPM vector %d\n",
+				err, cpm_vec);
+}
+
+/* Free a CPM interrupt handler.
+ * This routine accepts a CPM interrupt vector in the range 0 to 31.
+ * This routine is retained for backward compatibility.
+ */
+void
+cpm_free_handler(int cpm_vec)
+{
+	request_irq(CPM_IRQ_OFFSET + cpm_vec, NULL, 0, 0,
+		cpm_vecs[cpm_vec].dev_id);
+
+	cpm_vecs[cpm_vec].handler = NULL;
+	cpm_vecs[cpm_vec].dev_id = NULL;
+}
+
+/* We also own one page of host buffer space for the allocation of
+ * UART "fifos" and the like.
+ */
+uint
+m8xx_cpm_hostalloc(uint size)
+{
+	uint	retloc;
+
+	if (host_buffer == 0)
+		alloc_host_memory();
+
+	if ((host_buffer + size) >= host_end)
+		return(0);
+
+	retloc = host_buffer;
+	host_buffer += size;
+
+	return(retloc);
+}
+
+/* Set a baud rate generator.  This needs lots of work.  There are
+ * four BRGs, any of which can be wired to any channel.
+ * The internal baud rate clock is the system clock divided by 16.
+ * This assumes the baudrate is 16x oversampled by the uart.
+ */
+#define BRG_INT_CLK		(((bd_t *)__res)->bi_intfreq)
+#define BRG_UART_CLK		(BRG_INT_CLK/16)
+#define BRG_UART_CLK_DIV16	(BRG_UART_CLK/16)
+
+void
+cpm_setbrg(uint brg, uint rate)
+{
+	volatile uint	*bp;
+
+	/* This is good enough to get SMCs running.....
+	*/
+	bp = (uint *)&cpmp->cp_brgc1;
+	bp += brg;
+	/* The BRG has a 12-bit counter.  For really slow baud rates (or
+	 * really fast processors), we may have to further divide by 16.
+	 */
+	if (((BRG_UART_CLK / rate) - 1) < 4096)
+		*bp = (((BRG_UART_CLK / rate) - 1) << 1) | CPM_BRG_EN;
+	else
+		*bp = (((BRG_UART_CLK_DIV16 / rate) - 1) << 1) |
+						CPM_BRG_EN | CPM_BRG_DIV16;
+}
+
+/*
+ * dpalloc / dpfree bits.
+ */
+static spinlock_t cpm_dpmem_lock;
+/*
+ * 16 blocks should be enough to satisfy all requests
+ * until the memory subsystem goes up...
+ */
+static rh_block_t cpm_boot_dpmem_rh_block[16];
+static rh_info_t cpm_dpmem_info;
+
+#define CPM_DPMEM_ALIGNMENT	8
+
+void m8xx_cpm_dpinit(void)
+{
+	cpm8xx_t *cp = &((immap_t *)IMAP_ADDR)->im_cpm;
+
+	spin_lock_init(&cpm_dpmem_lock);
+
+	/* Initialize the info header */
+	rh_init(&cpm_dpmem_info, CPM_DPMEM_ALIGNMENT,
+			sizeof(cpm_boot_dpmem_rh_block) /
+			sizeof(cpm_boot_dpmem_rh_block[0]),
+			cpm_boot_dpmem_rh_block);
+
+	/*
+	 * Attach the usable dpmem area.
+	 * XXX: This is actually crap.  CPM_DATAONLY_BASE and
+	 * CPM_DATAONLY_SIZE are a subset of the available dparm.  It varies
+	 * with the processor and the microcode patches applied / activated.
+	 * But the following should be at least safe.
+	 */
+	rh_attach_region(&cpm_dpmem_info, (void *)CPM_DATAONLY_BASE, CPM_DATAONLY_SIZE);
+}
+
+/*
+ * Allocate the requested size worth of DP memory.
+ * This function used to return an index into the DPRAM area.
+ * Now it returns the actuall physical address of that area.
+ * use m8xx_cpm_dpram_offset() to get the index
+ */
+uint cpm_dpalloc(uint size, uint align)
+{
+	void *start;
+	unsigned long flags;
+
+	spin_lock_irqsave(&cpm_dpmem_lock, flags);
+	cpm_dpmem_info.alignment = align;
+	start = rh_alloc(&cpm_dpmem_info, size, "commproc");
+	spin_unlock_irqrestore(&cpm_dpmem_lock, flags);
+
+	return (uint)start;
+}
+EXPORT_SYMBOL(cpm_dpalloc);
+
+int cpm_dpfree(uint offset)
+{
+	int ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(&cpm_dpmem_lock, flags);
+	ret = rh_free(&cpm_dpmem_info, (void *)offset);
+	spin_unlock_irqrestore(&cpm_dpmem_lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL(cpm_dpfree);
+
+uint cpm_dpalloc_fixed(uint offset, uint size, uint align)
+{
+	void *start;
+	unsigned long flags;
+
+	spin_lock_irqsave(&cpm_dpmem_lock, flags);
+	cpm_dpmem_info.alignment = align;
+	start = rh_alloc_fixed(&cpm_dpmem_info, (void *)offset, size, "commproc");
+	spin_unlock_irqrestore(&cpm_dpmem_lock, flags);
+
+	return (uint)start;
+}
+EXPORT_SYMBOL(cpm_dpalloc_fixed);
+
+void cpm_dpdump(void)
+{
+	rh_dump(&cpm_dpmem_info);
+}
+EXPORT_SYMBOL(cpm_dpdump);
+
+void *cpm_dpram_addr(uint offset)
+{
+	return ((immap_t *)IMAP_ADDR)->im_cpm.cp_dpmem + offset;
+}
+EXPORT_SYMBOL(cpm_dpram_addr);
diff --git a/arch/ppc/8xx_io/cs4218.h b/arch/ppc/8xx_io/cs4218.h
new file mode 100644
index 0000000..a3c38c5
--- /dev/null
+++ b/arch/ppc/8xx_io/cs4218.h
@@ -0,0 +1,167 @@
+#ifndef _cs4218_h_
+/*
+ *  Hacked version of linux/drivers/sound/dmasound/dmasound.h
+ *
+ *
+ *  Minor numbers for the sound driver.
+ *
+ *  Unfortunately Creative called the codec chip of SB as a DSP. For this
+ *  reason the /dev/dsp is reserved for digitized audio use. There is a
+ *  device for true DSP processors but it will be called something else.
+ *  In v3.0 it's /dev/sndproc but this could be a temporary solution.
+ */
+#define _cs4218_h_
+
+#include <linux/types.h>
+#include <linux/config.h>
+
+#define SND_NDEVS	256	/* Number of supported devices */
+#define SND_DEV_CTL	0	/* Control port /dev/mixer */
+#define SND_DEV_SEQ	1	/* Sequencer output /dev/sequencer (FM
+				   synthesizer and MIDI output) */
+#define SND_DEV_MIDIN	2	/* Raw midi access */
+#define SND_DEV_DSP	3	/* Digitized voice /dev/dsp */
+#define SND_DEV_AUDIO	4	/* Sparc compatible /dev/audio */
+#define SND_DEV_DSP16	5	/* Like /dev/dsp but 16 bits/sample */
+#define SND_DEV_STATUS	6	/* /dev/sndstat */
+/* #7 not in use now. Was in 2.4. Free for use after v3.0. */
+#define SND_DEV_SEQ2	8	/* /dev/sequencer, level 2 interface */
+#define SND_DEV_SNDPROC 9	/* /dev/sndproc for programmable devices */
+#define SND_DEV_PSS	SND_DEV_SNDPROC
+
+/* switch on various prinks */
+#define DEBUG_DMASOUND 1
+
+#define MAX_AUDIO_DEV	5
+#define MAX_MIXER_DEV	4
+#define MAX_SYNTH_DEV	3
+#define MAX_MIDI_DEV	6
+#define MAX_TIMER_DEV	3
+
+#define MAX_CATCH_RADIUS	10
+
+#define le2be16(x)	(((x)<<8 & 0xff00) | ((x)>>8 & 0x00ff))
+#define le2be16dbl(x)	(((x)<<8 & 0xff00ff00) | ((x)>>8 & 0x00ff00ff))
+
+#define IOCTL_IN(arg, ret) \
+	do { int error = get_user(ret, (int *)(arg)); \
+		if (error) return error; \
+	} while (0)
+#define IOCTL_OUT(arg, ret)	ioctl_return((int *)(arg), ret)
+
+static inline int ioctl_return(int *addr, int value)
+{
+	return value < 0 ? value : put_user(value, addr);
+}
+
+#define HAS_RECORD
+
+    /*
+     *  Initialization
+     */
+
+/* description of the set-up applies to either hard or soft settings */
+
+typedef struct {
+    int format;		/* AFMT_* */
+    int stereo;		/* 0 = mono, 1 = stereo */
+    int size;		/* 8/16 bit*/
+    int speed;		/* speed */
+} SETTINGS;
+
+    /*
+     *  Machine definitions
+     */
+
+typedef struct {
+    const char *name;
+    const char *name2;
+    void (*open)(void);
+    void (*release)(void);
+    void *(*dma_alloc)(unsigned int, int);
+    void (*dma_free)(void *, unsigned int);
+    int (*irqinit)(void);
+#ifdef MODULE
+    void (*irqcleanup)(void);
+#endif
+    void (*init)(void);
+    void (*silence)(void);
+    int (*setFormat)(int);
+    int (*setVolume)(int);
+    int (*setBass)(int);
+    int (*setTreble)(int);
+    int (*setGain)(int);
+    void (*play)(void);
+    void (*record)(void);		/* optional */
+    void (*mixer_init)(void);		/* optional */
+    int (*mixer_ioctl)(u_int, u_long);	/* optional */
+    int (*write_sq_setup)(void);	/* optional */
+    int (*read_sq_setup)(void);		/* optional */
+    int (*sq_open)(mode_t);		/* optional */
+    int (*state_info)(char *, size_t);	/* optional */
+    void (*abort_read)(void);		/* optional */
+    int min_dsp_speed;
+    int max_dsp_speed;
+    int version ;
+    int hardware_afmts ;		/* OSS says we only return h'ware info */
+					/* when queried via SNDCTL_DSP_GETFMTS */
+    int capabilities ;		/* low-level reply to SNDCTL_DSP_GETCAPS */
+    SETTINGS default_hard ;	/* open() or init() should set something valid */
+    SETTINGS default_soft ;	/* you can make it look like old OSS, if you want to */
+} MACHINE;
+
+    /*
+     *  Low level stuff
+     */
+
+typedef struct {
+    ssize_t (*ct_ulaw)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
+    ssize_t (*ct_alaw)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
+    ssize_t (*ct_s8)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
+    ssize_t (*ct_u8)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
+    ssize_t (*ct_s16be)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
+    ssize_t (*ct_u16be)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
+    ssize_t (*ct_s16le)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
+    ssize_t (*ct_u16le)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
+} TRANS;
+
+
+    /*
+     * Sound queue stuff, the heart of the driver
+     */
+
+struct sound_queue {
+    /* buffers allocated for this queue */
+    int numBufs;		/* real limits on what the user can have */
+    int bufSize;		/* in bytes */
+    char **buffers;
+
+    /* current parameters */
+    int locked ;		/* params cannot be modified when != 0 */
+    int user_frags ;		/* user requests this many */
+    int user_frag_size ;	/* of this size */
+    int max_count;		/* actual # fragments <= numBufs */
+    int block_size;		/* internal block size in bytes */
+    int max_active;		/* in-use fragments <= max_count */
+
+    /* it shouldn't be necessary to declare any of these volatile */
+    int front, rear, count;
+    int rear_size;
+    /*
+     *	The use of the playing field depends on the hardware
+     *
+     *	Atari, PMac: The number of frames that are loaded/playing
+     *
+     *	Amiga: Bit 0 is set: a frame is loaded
+     *	       Bit 1 is set: a frame is playing
+     */
+    int active;
+    wait_queue_head_t action_queue, open_queue, sync_queue;
+    int open_mode;
+    int busy, syncing, xruns, died;
+};
+
+#define SLEEP(queue)		interruptible_sleep_on_timeout(&queue, HZ)
+#define WAKE_UP(queue)		(wake_up_interruptible(&queue))
+
+#endif /* _cs4218_h_ */
diff --git a/arch/ppc/8xx_io/cs4218_tdm.c b/arch/ppc/8xx_io/cs4218_tdm.c
new file mode 100644
index 0000000..89fe0ce
--- /dev/null
+++ b/arch/ppc/8xx_io/cs4218_tdm.c
@@ -0,0 +1,2836 @@
+
+/* This is a modified version of linux/drivers/sound/dmasound.c to
+ * support the CS4218 codec on the 8xx TDM port.  Thanks to everyone
+ * that contributed to the dmasound software (which includes me :-).
+ *
+ * The CS4218 is configured in Mode 4, sub-mode 0.  This provides
+ * left/right data only on the TDM port, as a 32-bit word, per frame
+ * pulse.  The control of the CS4218 is provided by some other means,
+ * like the SPI port.
+ * Dan Malek (dmalek@jlc.net)
+ */
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/major.h>
+#include <linux/config.h>
+#include <linux/fcntl.h>
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/sound.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include <asm/system.h>
+#include <asm/irq.h>
+#include <asm/pgtable.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+/* Should probably do something different with this path name.....
+ * Actually, I should just stop using it...
+ */
+#include "cs4218.h"
+#include <linux/soundcard.h>
+
+#include <asm/mpc8xx.h>
+#include <asm/8xx_immap.h>
+#include <asm/commproc.h>
+
+#define DMASND_CS4218		5
+
+#define MAX_CATCH_RADIUS	10
+#define MIN_BUFFERS		4
+#define MIN_BUFSIZE 		4
+#define MAX_BUFSIZE		128
+
+#define HAS_8BIT_TABLES
+
+static int sq_unit = -1;
+static int mixer_unit = -1;
+static int state_unit = -1;
+static int irq_installed = 0;
+static char **sound_buffers = NULL;
+static char **sound_read_buffers = NULL;
+
+static DEFINE_SPINLOCK(cs4218_lock);
+
+/* Local copies of things we put in the control register.  Output
+ * volume, like most codecs is really attenuation.
+ */
+static int cs4218_rate_index;
+
+/*
+ * Stuff for outputting a beep.  The values range from -327 to +327
+ * so we can multiply by an amplitude in the range 0..100 to get a
+ * signed short value to put in the output buffer.
+ */
+static short beep_wform[256] = {
+	0,	40,	79,	117,	153,	187,	218,	245,
+	269,	288,	304,	316,	323,	327,	327,	324,
+	318,	310,	299,	288,	275,	262,	249,	236,
+	224,	213,	204,	196,	190,	186,	183,	182,
+	182,	183,	186,	189,	192,	196,	200,	203,
+	206,	208,	209,	209,	209,	207,	204,	201,
+	197,	193,	188,	183,	179,	174,	170,	166,
+	163,	161,	160,	159,	159,	160,	161,	162,
+	164,	166,	168,	169,	171,	171,	171,	170,
+	169,	167,	163,	159,	155,	150,	144,	139,
+	133,	128,	122,	117,	113,	110,	107,	105,
+	103,	103,	103,	103,	104,	104,	105,	105,
+	105,	103,	101,	97,	92,	86,	78,	68,
+	58,	45,	32,	18,	3,	-11,	-26,	-41,
+	-55,	-68,	-79,	-88,	-95,	-100,	-102,	-102,
+	-99,	-93,	-85,	-75,	-62,	-48,	-33,	-16,
+	0,	16,	33,	48,	62,	75,	85,	93,
+	99,	102,	102,	100,	95,	88,	79,	68,
+	55,	41,	26,	11,	-3,	-18,	-32,	-45,
+	-58,	-68,	-78,	-86,	-92,	-97,	-101,	-103,
+	-105,	-105,	-105,	-104,	-104,	-103,	-103,	-103,
+	-103,	-105,	-107,	-110,	-113,	-117,	-122,	-128,
+	-133,	-139,	-144,	-150,	-155,	-159,	-163,	-167,
+	-169,	-170,	-171,	-171,	-171,	-169,	-168,	-166,
+	-164,	-162,	-161,	-160,	-159,	-159,	-160,	-161,
+	-163,	-166,	-170,	-174,	-179,	-183,	-188,	-193,
+	-197,	-201,	-204,	-207,	-209,	-209,	-209,	-208,
+	-206,	-203,	-200,	-196,	-192,	-189,	-186,	-183,
+	-182,	-182,	-183,	-186,	-190,	-196,	-204,	-213,
+	-224,	-236,	-249,	-262,	-275,	-288,	-299,	-310,
+	-318,	-324,	-327,	-327,	-323,	-316,	-304,	-288,
+	-269,	-245,	-218,	-187,	-153,	-117,	-79,	-40,
+};
+
+#define BEEP_SPEED	5	/* 22050 Hz sample rate */
+#define BEEP_BUFLEN	512
+#define BEEP_VOLUME	15	/* 0 - 100 */
+
+static int beep_volume = BEEP_VOLUME;
+static int beep_playing = 0;
+static int beep_state = 0;
+static short *beep_buf;
+static void (*orig_mksound)(unsigned int, unsigned int);
+
+/* This is found someplace else......I guess in the keyboard driver
+ * we don't include.
+ */
+static void (*kd_mksound)(unsigned int, unsigned int);
+
+static int catchRadius = 0;
+static int numBufs = 4, bufSize = 32;
+static int numReadBufs = 4, readbufSize = 32;
+
+
+/* TDM/Serial transmit and receive buffer descriptors.
+*/
+static volatile cbd_t	*rx_base, *rx_cur, *tx_base, *tx_cur;
+
+MODULE_PARM(catchRadius, "i");
+MODULE_PARM(numBufs, "i");
+MODULE_PARM(bufSize, "i");
+MODULE_PARM(numreadBufs, "i");
+MODULE_PARM(readbufSize, "i");
+
+#define arraysize(x)	(sizeof(x)/sizeof(*(x)))
+#define le2be16(x)	(((x)<<8 & 0xff00) | ((x)>>8 & 0x00ff))
+#define le2be16dbl(x)	(((x)<<8 & 0xff00ff00) | ((x)>>8 & 0x00ff00ff))
+
+#define IOCTL_IN(arg, ret) \
+	do { int error = get_user(ret, (int *)(arg)); \
+		if (error) return error; \
+	} while (0)
+#define IOCTL_OUT(arg, ret)	ioctl_return((int *)(arg), ret)
+
+/* CS4218 serial port control in mode 4.
+*/
+#define CS_INTMASK	((uint)0x40000000)
+#define CS_DO1		((uint)0x20000000)
+#define CS_LATTEN	((uint)0x1f000000)
+#define CS_RATTEN	((uint)0x00f80000)
+#define CS_MUTE		((uint)0x00040000)
+#define CS_ISL		((uint)0x00020000)
+#define CS_ISR		((uint)0x00010000)
+#define CS_LGAIN	((uint)0x0000f000)
+#define CS_RGAIN	((uint)0x00000f00)
+
+#define CS_LATTEN_SET(X)	(((X) & 0x1f) << 24)
+#define CS_RATTEN_SET(X)	(((X) & 0x1f) << 19)
+#define CS_LGAIN_SET(X)		(((X) & 0x0f) << 12)
+#define CS_RGAIN_SET(X)		(((X) & 0x0f) << 8)
+
+#define CS_LATTEN_GET(X)	(((X) >> 24) & 0x1f)
+#define CS_RATTEN_GET(X)	(((X) >> 19) & 0x1f)
+#define CS_LGAIN_GET(X)		(((X) >> 12) & 0x0f)
+#define CS_RGAIN_GET(X)		(((X) >> 8) & 0x0f)
+
+/* The control register is effectively write only.  We have to keep a copy
+ * of what we write.
+ */
+static	uint	cs4218_control;
+
+/* A place to store expanding information.
+*/
+static int	expand_bal;
+static int	expand_data;
+
+/* Since I can't make the microcode patch work for the SPI, I just
+ * clock the bits using software.
+ */
+static	void	sw_spi_init(void);
+static	void	sw_spi_io(u_char *obuf, u_char *ibuf, uint bcnt);
+static	uint	cs4218_ctl_write(uint ctlreg);
+
+/*** Some low level helpers **************************************************/
+
+/* 16 bit mu-law */
+
+static short ulaw2dma16[] = {
+	-32124,	-31100,	-30076,	-29052,	-28028,	-27004,	-25980,	-24956,
+	-23932,	-22908,	-21884,	-20860,	-19836,	-18812,	-17788,	-16764,
+	-15996,	-15484,	-14972,	-14460,	-13948,	-13436,	-12924,	-12412,
+	-11900,	-11388,	-10876,	-10364,	-9852,	-9340,	-8828,	-8316,
+	-7932,	-7676,	-7420,	-7164,	-6908,	-6652,	-6396,	-6140,
+	-5884,	-5628,	-5372,	-5116,	-4860,	-4604,	-4348,	-4092,
+	-3900,	-3772,	-3644,	-3516,	-3388,	-3260,	-3132,	-3004,
+	-2876,	-2748,	-2620,	-2492,	-2364,	-2236,	-2108,	-1980,
+	-1884,	-1820,	-1756,	-1692,	-1628,	-1564,	-1500,	-1436,
+	-1372,	-1308,	-1244,	-1180,	-1116,	-1052,	-988,	-924,
+	-876,	-844,	-812,	-780,	-748,	-716,	-684,	-652,
+	-620,	-588,	-556,	-524,	-492,	-460,	-428,	-396,
+	-372,	-356,	-340,	-324,	-308,	-292,	-276,	-260,
+	-244,	-228,	-212,	-196,	-180,	-164,	-148,	-132,
+	-120,	-112,	-104,	-96,	-88,	-80,	-72,	-64,
+	-56,	-48,	-40,	-32,	-24,	-16,	-8,	0,
+	32124,	31100,	30076,	29052,	28028,	27004,	25980,	24956,
+	23932,	22908,	21884,	20860,	19836,	18812,	17788,	16764,
+	15996,	15484,	14972,	14460,	13948,	13436,	12924,	12412,
+	11900,	11388,	10876,	10364,	9852,	9340,	8828,	8316,
+	7932,	7676,	7420,	7164,	6908,	6652,	6396,	6140,
+	5884,	5628,	5372,	5116,	4860,	4604,	4348,	4092,
+	3900,	3772,	3644,	3516,	3388,	3260,	3132,	3004,
+	2876,	2748,	2620,	2492,	2364,	2236,	2108,	1980,
+	1884,	1820,	1756,	1692,	1628,	1564,	1500,	1436,
+	1372,	1308,	1244,	1180,	1116,	1052,	988,	924,
+	876,	844,	812,	780,	748,	716,	684,	652,
+	620,	588,	556,	524,	492,	460,	428,	396,
+	372,	356,	340,	324,	308,	292,	276,	260,
+	244,	228,	212,	196,	180,	164,	148,	132,
+	120,	112,	104,	96,	88,	80,	72,	64,
+	56,	48,	40,	32,	24,	16,	8,	0,
+};
+
+/* 16 bit A-law */
+
+static short alaw2dma16[] = {
+	-5504,	-5248,	-6016,	-5760,	-4480,	-4224,	-4992,	-4736,
+	-7552,	-7296,	-8064,	-7808,	-6528,	-6272,	-7040,	-6784,
+	-2752,	-2624,	-3008,	-2880,	-2240,	-2112,	-2496,	-2368,
+	-3776,	-3648,	-4032,	-3904,	-3264,	-3136,	-3520,	-3392,
+	-22016,	-20992,	-24064,	-23040,	-17920,	-16896,	-19968,	-18944,
+	-30208,	-29184,	-32256,	-31232,	-26112,	-25088,	-28160,	-27136,
+	-11008,	-10496,	-12032,	-11520,	-8960,	-8448,	-9984,	-9472,
+	-15104,	-14592,	-16128,	-15616,	-13056,	-12544,	-14080,	-13568,
+	-344,	-328,	-376,	-360,	-280,	-264,	-312,	-296,
+	-472,	-456,	-504,	-488,	-408,	-392,	-440,	-424,
+	-88,	-72,	-120,	-104,	-24,	-8,	-56,	-40,
+	-216,	-200,	-248,	-232,	-152,	-136,	-184,	-168,
+	-1376,	-1312,	-1504,	-1440,	-1120,	-1056,	-1248,	-1184,
+	-1888,	-1824,	-2016,	-1952,	-1632,	-1568,	-1760,	-1696,
+	-688,	-656,	-752,	-720,	-560,	-528,	-624,	-592,
+	-944,	-912,	-1008,	-976,	-816,	-784,	-880,	-848,
+	5504,	5248,	6016,	5760,	4480,	4224,	4992,	4736,
+	7552,	7296,	8064,	7808,	6528,	6272,	7040,	6784,
+	2752,	2624,	3008,	2880,	2240,	2112,	2496,	2368,
+	3776,	3648,	4032,	3904,	3264,	3136,	3520,	3392,
+	22016,	20992,	24064,	23040,	17920,	16896,	19968,	18944,
+	30208,	29184,	32256,	31232,	26112,	25088,	28160,	27136,
+	11008,	10496,	12032,	11520,	8960,	8448,	9984,	9472,
+	15104,	14592,	16128,	15616,	13056,	12544,	14080,	13568,
+	344,	328,	376,	360,	280,	264,	312,	296,
+	472,	456,	504,	488,	408,	392,	440,	424,
+	88,	72,	120,	104,	24,	8,	56,	40,
+	216,	200,	248,	232,	152,	136,	184,	168,
+	1376,	1312,	1504,	1440,	1120,	1056,	1248,	1184,
+	1888,	1824,	2016,	1952,	1632,	1568,	1760,	1696,
+	688,	656,	752,	720,	560,	528,	624,	592,
+	944,	912,	1008,	976,	816,	784,	880,	848,
+};
+
+
+/*** Translations ************************************************************/
+
+
+static ssize_t cs4218_ct_law(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft);
+static ssize_t cs4218_ct_s8(const u_char *userPtr, size_t userCount,
+			  u_char frame[], ssize_t *frameUsed,
+			  ssize_t frameLeft);
+static ssize_t cs4218_ct_u8(const u_char *userPtr, size_t userCount,
+			  u_char frame[], ssize_t *frameUsed,
+			  ssize_t frameLeft);
+static ssize_t cs4218_ct_s16(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft);
+static ssize_t cs4218_ct_u16(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft);
+static ssize_t cs4218_ctx_law(const u_char *userPtr, size_t userCount,
+			    u_char frame[], ssize_t *frameUsed,
+			    ssize_t frameLeft);
+static ssize_t cs4218_ctx_s8(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft);
+static ssize_t cs4218_ctx_u8(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft);
+static ssize_t cs4218_ctx_s16(const u_char *userPtr, size_t userCount,
+			    u_char frame[], ssize_t *frameUsed,
+			    ssize_t frameLeft);
+static ssize_t cs4218_ctx_u16(const u_char *userPtr, size_t userCount,
+			    u_char frame[], ssize_t *frameUsed,
+			    ssize_t frameLeft);
+static ssize_t cs4218_ct_s16_read(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft);
+static ssize_t cs4218_ct_u16_read(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft);
+
+
+/*** Low level stuff *********************************************************/
+
+struct cs_sound_settings {
+	MACHINE mach;		/* machine dependent things */
+	SETTINGS hard;		/* hardware settings */
+	SETTINGS soft;		/* software settings */
+	SETTINGS dsp;		/* /dev/dsp default settings */
+	TRANS *trans_write;	/* supported translations for playback */
+	TRANS *trans_read;	/* supported translations for record */
+	int volume_left;	/* volume (range is machine dependent) */
+	int volume_right;
+	int bass;		/* tone (range is machine dependent) */
+	int treble;
+	int gain;
+	int minDev;		/* minor device number currently open */
+};
+
+static struct cs_sound_settings sound;
+
+static void *CS_Alloc(unsigned int size, int flags);
+static void CS_Free(void *ptr, unsigned int size);
+static int CS_IrqInit(void);
+#ifdef MODULE
+static void CS_IrqCleanup(void);
+#endif /* MODULE */
+static void CS_Silence(void);
+static void CS_Init(void);
+static void CS_Play(void);
+static void CS_Record(void);
+static int CS_SetFormat(int format);
+static int CS_SetVolume(int volume);
+static void cs4218_tdm_tx_intr(void *devid);
+static void cs4218_tdm_rx_intr(void *devid);
+static void cs4218_intr(void *devid, struct pt_regs *regs);
+static int cs_get_volume(uint reg);
+static int cs_volume_setter(int volume, int mute);
+static int cs_get_gain(uint reg);
+static int cs_set_gain(int gain);
+static void cs_mksound(unsigned int hz, unsigned int ticks);
+static void cs_nosound(unsigned long xx);
+
+/*** Mid level stuff *********************************************************/
+
+
+static void sound_silence(void);
+static void sound_init(void);
+static int sound_set_format(int format);
+static int sound_set_speed(int speed);
+static int sound_set_stereo(int stereo);
+static int sound_set_volume(int volume);
+
+static ssize_t sound_copy_translate(const u_char *userPtr,
+				    size_t userCount,
+				    u_char frame[], ssize_t *frameUsed,
+				    ssize_t frameLeft);
+static ssize_t sound_copy_translate_read(const u_char *userPtr,
+				    size_t userCount,
+				    u_char frame[], ssize_t *frameUsed,
+				    ssize_t frameLeft);
+
+
+/*
+ * /dev/mixer abstraction
+ */
+
+struct sound_mixer {
+    int busy;
+    int modify_counter;
+};
+
+static struct sound_mixer mixer;
+
+static struct sound_queue sq;
+static struct sound_queue read_sq;
+
+#define sq_block_address(i)	(sq.buffers[i])
+#define SIGNAL_RECEIVED	(signal_pending(current))
+#define NON_BLOCKING(open_mode)	(open_mode & O_NONBLOCK)
+#define ONE_SECOND	HZ	/* in jiffies (100ths of a second) */
+#define NO_TIME_LIMIT	0xffffffff
+
+/*
+ * /dev/sndstat
+ */
+
+struct sound_state {
+	int busy;
+	char buf[512];
+	int len, ptr;
+};
+
+static struct sound_state state;
+
+/*** Common stuff ********************************************************/
+
+static long long sound_lseek(struct file *file, long long offset, int orig);
+
+/*** Config & Setup **********************************************************/
+
+void dmasound_setup(char *str, int *ints);
+
+/*** Translations ************************************************************/
+
+
+/* ++TeSche: radically changed for new expanding purposes...
+ *
+ * These two routines now deal with copying/expanding/translating the samples
+ * from user space into our buffer at the right frequency. They take care about
+ * how much data there's actually to read, how much buffer space there is and
+ * to convert samples into the right frequency/encoding. They will only work on
+ * complete samples so it may happen they leave some bytes in the input stream
+ * if the user didn't write a multiple of the current sample size. They both
+ * return the number of bytes they've used from both streams so you may detect
+ * such a situation. Luckily all programs should be able to cope with that.
+ *
+ * I think I've optimized anything as far as one can do in plain C, all
+ * variables should fit in registers and the loops are really short. There's
+ * one loop for every possible situation. Writing a more generalized and thus
+ * parameterized loop would only produce slower code. Feel free to optimize
+ * this in assembler if you like. :)
+ *
+ * I think these routines belong here because they're not yet really hardware
+ * independent, especially the fact that the Falcon can play 16bit samples
+ * only in stereo is hardcoded in both of them!
+ *
+ * ++geert: split in even more functions (one per format)
+ */
+
+static ssize_t cs4218_ct_law(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft)
+{
+	short *table = sound.soft.format == AFMT_MU_LAW ? ulaw2dma16: alaw2dma16;
+	ssize_t count, used;
+	short *p = (short *) &frame[*frameUsed];
+	int val, stereo = sound.soft.stereo;
+
+	frameLeft >>= 2;
+	if (stereo)
+		userCount >>= 1;
+	used = count = min(userCount, frameLeft);
+	while (count > 0) {
+		u_char data;
+		if (get_user(data, userPtr++))
+			return -EFAULT;
+		val = table[data];
+		*p++ = val;
+		if (stereo) {
+			if (get_user(data, userPtr++))
+				return -EFAULT;
+			val = table[data];
+		}
+		*p++ = val;
+		count--;
+	}
+	*frameUsed += used * 4;
+	return stereo? used * 2: used;
+}
+
+
+static ssize_t cs4218_ct_s8(const u_char *userPtr, size_t userCount,
+			  u_char frame[], ssize_t *frameUsed,
+			  ssize_t frameLeft)
+{
+	ssize_t count, used;
+	short *p = (short *) &frame[*frameUsed];
+	int val, stereo = sound.soft.stereo;
+
+	frameLeft >>= 2;
+	if (stereo)
+		userCount >>= 1;
+	used = count = min(userCount, frameLeft);
+	while (count > 0) {
+		u_char data;
+		if (get_user(data, userPtr++))
+			return -EFAULT;
+		val = data << 8;
+		*p++ = val;
+		if (stereo) {
+			if (get_user(data, userPtr++))
+				return -EFAULT;
+			val = data << 8;
+		}
+		*p++ = val;
+		count--;
+	}
+	*frameUsed += used * 4;
+	return stereo? used * 2: used;
+}
+
+
+static ssize_t cs4218_ct_u8(const u_char *userPtr, size_t userCount,
+			  u_char frame[], ssize_t *frameUsed,
+			  ssize_t frameLeft)
+{
+	ssize_t count, used;
+	short *p = (short *) &frame[*frameUsed];
+	int val, stereo = sound.soft.stereo;
+
+	frameLeft >>= 2;
+	if (stereo)
+		userCount >>= 1;
+	used = count = min(userCount, frameLeft);
+	while (count > 0) {
+		u_char data;
+		if (get_user(data, userPtr++))
+			return -EFAULT;
+		val = (data ^ 0x80) << 8;
+		*p++ = val;
+		if (stereo) {
+			if (get_user(data, userPtr++))
+				return -EFAULT;
+			val = (data ^ 0x80) << 8;
+		}
+		*p++ = val;
+		count--;
+	}
+	*frameUsed += used * 4;
+	return stereo? used * 2: used;
+}
+
+
+/* This is the default format of the codec.  Signed, 16-bit stereo
+ * generated by an application shouldn't have to be copied at all.
+ * We should just get the phsical address of the buffers and update
+ * the TDM BDs directly.
+ */
+static ssize_t cs4218_ct_s16(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft)
+{
+	ssize_t count, used;
+	int stereo = sound.soft.stereo;
+	short *fp = (short *) &frame[*frameUsed];
+
+	frameLeft >>= 2;
+	userCount >>= (stereo? 2: 1);
+	used = count = min(userCount, frameLeft);
+	if (!stereo) {
+		short *up = (short *) userPtr;
+		while (count > 0) {
+			short data;
+			if (get_user(data, up++))
+				return -EFAULT;
+			*fp++ = data;
+			*fp++ = data;
+			count--;
+		}
+	} else {
+		if (copy_from_user(fp, userPtr, count * 4))
+			return -EFAULT;
+	}
+	*frameUsed += used * 4;
+	return stereo? used * 4: used * 2;
+}
+
+static ssize_t cs4218_ct_u16(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft)
+{
+	ssize_t count, used;
+	int mask = (sound.soft.format == AFMT_U16_LE? 0x0080: 0x8000);
+	int stereo = sound.soft.stereo;
+	short *fp = (short *) &frame[*frameUsed];
+	short *up = (short *) userPtr;
+
+	frameLeft >>= 2;
+	userCount >>= (stereo? 2: 1);
+	used = count = min(userCount, frameLeft);
+	while (count > 0) {
+		int data;
+		if (get_user(data, up++))
+			return -EFAULT;
+		data ^= mask;
+		*fp++ = data;
+		if (stereo) {
+			if (get_user(data, up++))
+				return -EFAULT;
+			data ^= mask;
+		}
+		*fp++ = data;
+		count--;
+	}
+	*frameUsed += used * 4;
+	return stereo? used * 4: used * 2;
+}
+
+
+static ssize_t cs4218_ctx_law(const u_char *userPtr, size_t userCount,
+			    u_char frame[], ssize_t *frameUsed,
+			    ssize_t frameLeft)
+{
+	unsigned short *table = (unsigned short *)
+		(sound.soft.format == AFMT_MU_LAW ? ulaw2dma16: alaw2dma16);
+	unsigned int data = expand_data;
+	unsigned int *p = (unsigned int *) &frame[*frameUsed];
+	int bal = expand_bal;
+	int hSpeed = sound.hard.speed, sSpeed = sound.soft.speed;
+	int utotal, ftotal;
+	int stereo = sound.soft.stereo;
+
+	frameLeft >>= 2;
+	if (stereo)
+		userCount >>= 1;
+	ftotal = frameLeft;
+	utotal = userCount;
+	while (frameLeft) {
+		u_char c;
+		if (bal < 0) {
+			if (userCount == 0)
+				break;
+			if (get_user(c, userPtr++))
+				return -EFAULT;
+			data = table[c];
+			if (stereo) {
+				if (get_user(c, userPtr++))
+					return -EFAULT;
+				data = (data << 16) + table[c];
+			} else
+				data = (data << 16) + data;
+			userCount--;
+			bal += hSpeed;
+		}
+		*p++ = data;
+		frameLeft--;
+		bal -= sSpeed;
+	}
+	expand_bal = bal;
+	expand_data = data;
+	*frameUsed += (ftotal - frameLeft) * 4;
+	utotal -= userCount;
+	return stereo? utotal * 2: utotal;
+}
+
+
+static ssize_t cs4218_ctx_s8(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft)
+{
+	unsigned int *p = (unsigned int *) &frame[*frameUsed];
+	unsigned int data = expand_data;
+	int bal = expand_bal;
+	int hSpeed = sound.hard.speed, sSpeed = sound.soft.speed;
+	int stereo = sound.soft.stereo;
+	int utotal, ftotal;
+
+	frameLeft >>= 2;
+	if (stereo)
+		userCount >>= 1;
+	ftotal = frameLeft;
+	utotal = userCount;
+	while (frameLeft) {
+		u_char c;
+		if (bal < 0) {
+			if (userCount == 0)
+				break;
+			if (get_user(c, userPtr++))
+				return -EFAULT;
+			data = c << 8;
+			if (stereo) {
+				if (get_user(c, userPtr++))
+					return -EFAULT;
+				data = (data << 16) + (c << 8);
+			} else
+				data = (data << 16) + data;
+			userCount--;
+			bal += hSpeed;
+		}
+		*p++ = data;
+		frameLeft--;
+		bal -= sSpeed;
+	}
+	expand_bal = bal;
+	expand_data = data;
+	*frameUsed += (ftotal - frameLeft) * 4;
+	utotal -= userCount;
+	return stereo? utotal * 2: utotal;
+}
+
+
+static ssize_t cs4218_ctx_u8(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft)
+{
+	unsigned int *p = (unsigned int *) &frame[*frameUsed];
+	unsigned int data = expand_data;
+	int bal = expand_bal;
+	int hSpeed = sound.hard.speed, sSpeed = sound.soft.speed;
+	int stereo = sound.soft.stereo;
+	int utotal, ftotal;
+
+	frameLeft >>= 2;
+	if (stereo)
+		userCount >>= 1;
+	ftotal = frameLeft;
+	utotal = userCount;
+	while (frameLeft) {
+		u_char c;
+		if (bal < 0) {
+			if (userCount == 0)
+				break;
+			if (get_user(c, userPtr++))
+				return -EFAULT;
+			data = (c ^ 0x80) << 8;
+			if (stereo) {
+				if (get_user(c, userPtr++))
+					return -EFAULT;
+				data = (data << 16) + ((c ^ 0x80) << 8);
+			} else
+				data = (data << 16) + data;
+			userCount--;
+			bal += hSpeed;
+		}
+		*p++ = data;
+		frameLeft--;
+		bal -= sSpeed;
+	}
+	expand_bal = bal;
+	expand_data = data;
+	*frameUsed += (ftotal - frameLeft) * 4;
+	utotal -= userCount;
+	return stereo? utotal * 2: utotal;
+}
+
+
+static ssize_t cs4218_ctx_s16(const u_char *userPtr, size_t userCount,
+			    u_char frame[], ssize_t *frameUsed,
+			    ssize_t frameLeft)
+{
+	unsigned int *p = (unsigned int *) &frame[*frameUsed];
+	unsigned int data = expand_data;
+	unsigned short *up = (unsigned short *) userPtr;
+	int bal = expand_bal;
+	int hSpeed = sound.hard.speed, sSpeed = sound.soft.speed;
+	int stereo = sound.soft.stereo;
+	int utotal, ftotal;
+
+	frameLeft >>= 2;
+	userCount >>= (stereo? 2: 1);
+	ftotal = frameLeft;
+	utotal = userCount;
+	while (frameLeft) {
+		unsigned short c;
+		if (bal < 0) {
+			if (userCount == 0)
+				break;
+			if (get_user(data, up++))
+				return -EFAULT;
+			if (stereo) {
+				if (get_user(c, up++))
+					return -EFAULT;
+				data = (data << 16) + c;
+			} else
+				data = (data << 16) + data;
+			userCount--;
+			bal += hSpeed;
+		}
+		*p++ = data;
+		frameLeft--;
+		bal -= sSpeed;
+	}
+	expand_bal = bal;
+	expand_data = data;
+	*frameUsed += (ftotal - frameLeft) * 4;
+	utotal -= userCount;
+	return stereo? utotal * 4: utotal * 2;
+}
+
+
+static ssize_t cs4218_ctx_u16(const u_char *userPtr, size_t userCount,
+			    u_char frame[], ssize_t *frameUsed,
+			    ssize_t frameLeft)
+{
+	int mask = (sound.soft.format == AFMT_U16_LE? 0x0080: 0x8000);
+	unsigned int *p = (unsigned int *) &frame[*frameUsed];
+	unsigned int data = expand_data;
+	unsigned short *up = (unsigned short *) userPtr;
+	int bal = expand_bal;
+	int hSpeed = sound.hard.speed, sSpeed = sound.soft.speed;
+	int stereo = sound.soft.stereo;
+	int utotal, ftotal;
+
+	frameLeft >>= 2;
+	userCount >>= (stereo? 2: 1);
+	ftotal = frameLeft;
+	utotal = userCount;
+	while (frameLeft) {
+		unsigned short c;
+		if (bal < 0) {
+			if (userCount == 0)
+				break;
+			if (get_user(data, up++))
+				return -EFAULT;
+			data ^= mask;
+			if (stereo) {
+				if (get_user(c, up++))
+					return -EFAULT;
+				data = (data << 16) + (c ^ mask);
+			} else
+				data = (data << 16) + data;
+			userCount--;
+			bal += hSpeed;
+		}
+		*p++ = data;
+		frameLeft--;
+		bal -= sSpeed;
+	}
+	expand_bal = bal;
+	expand_data = data;
+	*frameUsed += (ftotal - frameLeft) * 4;
+	utotal -= userCount;
+	return stereo? utotal * 4: utotal * 2;
+}
+
+static ssize_t cs4218_ct_s8_read(const u_char *userPtr, size_t userCount,
+			  u_char frame[], ssize_t *frameUsed,
+			  ssize_t frameLeft)
+{
+	ssize_t count, used;
+	short *p = (short *) &frame[*frameUsed];
+	int val, stereo = sound.soft.stereo;
+
+	frameLeft >>= 2;
+	if (stereo)
+		userCount >>= 1;
+	used = count = min(userCount, frameLeft);
+	while (count > 0) {
+		u_char data;
+
+		val = *p++;
+		data = val >> 8;
+		if (put_user(data, (u_char *)userPtr++))
+			return -EFAULT;
+		if (stereo) {
+			val = *p;
+			data = val >> 8;
+			if (put_user(data, (u_char *)userPtr++))
+				return -EFAULT;
+		}
+		p++;
+		count--;
+	}
+	*frameUsed += used * 4;
+	return stereo? used * 2: used;
+}
+
+
+static ssize_t cs4218_ct_u8_read(const u_char *userPtr, size_t userCount,
+			  u_char frame[], ssize_t *frameUsed,
+			  ssize_t frameLeft)
+{
+	ssize_t count, used;
+	short *p = (short *) &frame[*frameUsed];
+	int val, stereo = sound.soft.stereo;
+
+	frameLeft >>= 2;
+	if (stereo)
+		userCount >>= 1;
+	used = count = min(userCount, frameLeft);
+	while (count > 0) {
+		u_char data;
+
+		val = *p++;
+		data = (val >> 8) ^ 0x80;
+		if (put_user(data, (u_char *)userPtr++))
+			return -EFAULT;
+		if (stereo) {
+			val = *p;
+			data = (val >> 8) ^ 0x80;
+			if (put_user(data, (u_char *)userPtr++))
+				return -EFAULT;
+		}
+		p++;
+		count--;
+	}
+	*frameUsed += used * 4;
+	return stereo? used * 2: used;
+}
+
+
+static ssize_t cs4218_ct_s16_read(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft)
+{
+	ssize_t count, used;
+	int stereo = sound.soft.stereo;
+	short *fp = (short *) &frame[*frameUsed];
+
+	frameLeft >>= 2;
+	userCount >>= (stereo? 2: 1);
+	used = count = min(userCount, frameLeft);
+	if (!stereo) {
+		short *up = (short *) userPtr;
+		while (count > 0) {
+			short data;
+			data = *fp;
+			if (put_user(data, up++))
+				return -EFAULT;
+			fp+=2;
+			count--;
+		}
+	} else {
+		if (copy_to_user((u_char *)userPtr, fp, count * 4))
+			return -EFAULT;
+	}
+	*frameUsed += used * 4;
+	return stereo? used * 4: used * 2;
+}
+
+static ssize_t cs4218_ct_u16_read(const u_char *userPtr, size_t userCount,
+			   u_char frame[], ssize_t *frameUsed,
+			   ssize_t frameLeft)
+{
+	ssize_t count, used;
+	int mask = (sound.soft.format == AFMT_U16_LE? 0x0080: 0x8000);
+	int stereo = sound.soft.stereo;
+	short *fp = (short *) &frame[*frameUsed];
+	short *up = (short *) userPtr;
+
+	frameLeft >>= 2;
+	userCount >>= (stereo? 2: 1);
+	used = count = min(userCount, frameLeft);
+	while (count > 0) {
+		int data;
+
+		data = *fp++;
+		data ^= mask;
+		if (put_user(data, up++))
+			return -EFAULT;
+		if (stereo) {
+			data = *fp;
+			data ^= mask;
+			if (put_user(data, up++))
+				return -EFAULT;
+		}
+		fp++;
+		count--;
+	}
+	*frameUsed += used * 4;
+	return stereo? used * 4: used * 2;
+}
+
+static TRANS transCSNormal = {
+	cs4218_ct_law, cs4218_ct_law, cs4218_ct_s8, cs4218_ct_u8,
+	cs4218_ct_s16, cs4218_ct_u16, cs4218_ct_s16, cs4218_ct_u16
+};
+
+static TRANS transCSExpand = {
+	cs4218_ctx_law, cs4218_ctx_law, cs4218_ctx_s8, cs4218_ctx_u8,
+	cs4218_ctx_s16, cs4218_ctx_u16, cs4218_ctx_s16, cs4218_ctx_u16
+};
+
+static TRANS transCSNormalRead = {
+	NULL, NULL, cs4218_ct_s8_read, cs4218_ct_u8_read,
+	cs4218_ct_s16_read, cs4218_ct_u16_read,
+	cs4218_ct_s16_read, cs4218_ct_u16_read
+};
+
+/*** Low level stuff *********************************************************/
+
+static void *CS_Alloc(unsigned int size, int flags)
+{
+	int	order;
+
+	size >>= 13;
+	for (order=0; order < 5; order++) {
+		if (size == 0)
+			break;
+		size >>= 1;
+	}
+	return (void *)__get_free_pages(flags, order);
+}
+
+static void CS_Free(void *ptr, unsigned int size)
+{
+	int	order;
+
+	size >>= 13;
+	for (order=0; order < 5; order++) {
+		if (size == 0)
+			break;
+		size >>= 1;
+	}
+	free_pages((ulong)ptr, order);
+}
+
+static int __init CS_IrqInit(void)
+{
+	cpm_install_handler(CPMVEC_SMC2, cs4218_intr, NULL);
+	return 1;
+}
+
+#ifdef MODULE
+static void CS_IrqCleanup(void)
+{
+	volatile smc_t		*sp;
+	volatile cpm8xx_t	*cp;
+
+	/* First disable transmitter and receiver.
+	*/
+	sp = &cpmp->cp_smc[1];
+	sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
+
+	/* And now shut down the SMC.
+	*/
+	cp = cpmp;	/* Get pointer to Communication Processor */
+	cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2,
+				CPM_CR_STOP_TX) | CPM_CR_FLG;
+	while (cp->cp_cpcr & CPM_CR_FLG);
+
+	/* Release the interrupt handler.
+	*/
+	cpm_free_handler(CPMVEC_SMC2);
+
+	if (beep_buf)
+		kfree(beep_buf);
+	kd_mksound = orig_mksound;
+}
+#endif /* MODULE */
+
+static void CS_Silence(void)
+{
+	volatile smc_t		*sp;
+
+	/* Disable transmitter.
+	*/
+	sp = &cpmp->cp_smc[1];
+	sp->smc_smcmr &= ~SMCMR_TEN;
+}
+
+/* Frequencies depend upon external oscillator.  There are two
+ * choices, 12.288 and 11.2896 MHz.  The RPCG audio supports both through
+ * and external control register selection bit.
+ */
+static int cs4218_freqs[] = {
+    /* 12.288  11.2896  */
+	48000, 44100,
+	32000, 29400,
+	24000, 22050,
+	19200, 17640,
+	16000, 14700,
+	12000, 11025,
+	 9600,  8820,
+	 8000,  7350
+};
+
+static void CS_Init(void)
+{
+	int i, tolerance;
+
+	switch (sound.soft.format) {
+	case AFMT_S16_LE:
+	case AFMT_U16_LE:
+		sound.hard.format = AFMT_S16_LE;
+		break;
+	default:
+		sound.hard.format = AFMT_S16_BE;
+		break;
+	}
+	sound.hard.stereo = 1;
+	sound.hard.size = 16;
+
+	/*
+	 * If we have a sample rate which is within catchRadius percent
+	 * of the requested value, we don't have to expand the samples.
+	 * Otherwise choose the next higher rate.
+	 */
+	i = (sizeof(cs4218_freqs) / sizeof(int));
+	do {
+		tolerance = catchRadius * cs4218_freqs[--i] / 100;
+	} while (sound.soft.speed > cs4218_freqs[i] + tolerance && i > 0);
+	if (sound.soft.speed >= cs4218_freqs[i] - tolerance)
+		sound.trans_write = &transCSNormal;
+	else
+		sound.trans_write = &transCSExpand;
+	sound.trans_read = &transCSNormalRead;
+	sound.hard.speed = cs4218_freqs[i];
+	cs4218_rate_index = i;
+
+	/* The CS4218 has seven selectable clock dividers for the sample
+	 * clock.  The HIOX then provides one of two external rates.
+	 * An even numbered frequency table index uses the high external
+	 * clock rate.
+	 */
+	*(uint *)HIOX_CSR4_ADDR &= ~(HIOX_CSR4_AUDCLKHI | HIOX_CSR4_AUDCLKSEL);
+	if ((i & 1) == 0)
+		*(uint *)HIOX_CSR4_ADDR |= HIOX_CSR4_AUDCLKHI;
+	i >>= 1;
+	*(uint *)HIOX_CSR4_ADDR |= (i & HIOX_CSR4_AUDCLKSEL);
+
+	expand_bal = -sound.soft.speed;
+}
+
+static int CS_SetFormat(int format)
+{
+	int size;
+
+	switch (format) {
+	case AFMT_QUERY:
+		return sound.soft.format;
+	case AFMT_MU_LAW:
+	case AFMT_A_LAW:
+	case AFMT_U8:
+	case AFMT_S8:
+		size = 8;
+		break;
+	case AFMT_S16_BE:
+	case AFMT_U16_BE:
+	case AFMT_S16_LE:
+	case AFMT_U16_LE:
+		size = 16;
+		break;
+	default: /* :-) */
+		printk(KERN_ERR "dmasound: unknown format 0x%x, using AFMT_U8\n",
+		       format);
+		size = 8;
+		format = AFMT_U8;
+	}
+
+	sound.soft.format = format;
+	sound.soft.size = size;
+	if (sound.minDev == SND_DEV_DSP) {
+		sound.dsp.format = format;
+		sound.dsp.size = size;
+	}
+
+	CS_Init();
+
+	return format;
+}
+
+/* Volume is the amount of attenuation we tell the codec to impose
+ * on the outputs.  There are 32 levels, with 0 the "loudest".
+ */
+#define CS_VOLUME_TO_MASK(x)	(31 - ((((x) - 1) * 31) / 99))
+#define CS_MASK_TO_VOLUME(y)	(100 - ((y) * 99 / 31))
+
+static int cs_get_volume(uint reg)
+{
+	int volume;
+
+	volume = CS_MASK_TO_VOLUME(CS_LATTEN_GET(reg));
+	volume |= CS_MASK_TO_VOLUME(CS_RATTEN_GET(reg)) << 8;
+	return volume;
+}
+
+static int cs_volume_setter(int volume, int mute)
+{
+	uint tempctl;
+
+	if (mute && volume == 0) {
+		tempctl = cs4218_control | CS_MUTE;
+	} else {
+		tempctl = cs4218_control & ~CS_MUTE;
+		tempctl = tempctl & ~(CS_LATTEN | CS_RATTEN);
+		tempctl |= CS_LATTEN_SET(CS_VOLUME_TO_MASK(volume & 0xff));
+		tempctl |= CS_RATTEN_SET(CS_VOLUME_TO_MASK((volume >> 8) & 0xff));
+		volume = cs_get_volume(tempctl);
+	}
+	if (tempctl != cs4218_control) {
+		cs4218_ctl_write(tempctl);
+	}
+	return volume;
+}
+
+
+/* Gain has 16 steps from 0 to 15.  These are in 1.5dB increments from
+ * 0 (no gain) to 22.5 dB.
+ */
+#define CS_RECLEVEL_TO_GAIN(v) \
+	((v) < 0 ? 0 : (v) > 100 ? 15 : (v) * 3 / 20)
+#define CS_GAIN_TO_RECLEVEL(v) (((v) * 20 + 2) / 3)
+
+static int cs_get_gain(uint reg)
+{
+	int gain;
+
+	gain = CS_GAIN_TO_RECLEVEL(CS_LGAIN_GET(reg));
+	gain |= CS_GAIN_TO_RECLEVEL(CS_RGAIN_GET(reg)) << 8;
+	return gain;
+}
+
+static int cs_set_gain(int gain)
+{
+	uint tempctl;
+
+	tempctl = cs4218_control & ~(CS_LGAIN | CS_RGAIN);
+	tempctl |= CS_LGAIN_SET(CS_RECLEVEL_TO_GAIN(gain & 0xff));
+	tempctl |= CS_RGAIN_SET(CS_RECLEVEL_TO_GAIN((gain >> 8) & 0xff));
+	gain = cs_get_gain(tempctl);
+
+	if (tempctl != cs4218_control) {
+		cs4218_ctl_write(tempctl);
+	}
+	return gain;
+}
+
+static int CS_SetVolume(int volume)
+{
+	return cs_volume_setter(volume, CS_MUTE);
+}
+
+static void CS_Play(void)
+{
+	int i, count;
+	unsigned long flags;
+	volatile cbd_t	*bdp;
+	volatile cpm8xx_t *cp;
+
+	/* Protect buffer */
+	spin_lock_irqsave(&cs4218_lock, flags);
+#if 0
+	if (awacs_beep_state) {
+		/* sound takes precedence over beeps */
+		out_le32(&awacs_txdma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
+		out_le32(&awacs->control,
+			 (in_le32(&awacs->control) & ~0x1f00)
+			 | (awacs_rate_index << 8));
+		out_le32(&awacs->byteswap, sound.hard.format != AFMT_S16_BE);
+		out_le32(&awacs_txdma->cmdptr, virt_to_bus(&(awacs_tx_cmds[(sq.front+sq.active) % sq.max_count])));
+
+		beep_playing = 0;
+		awacs_beep_state = 0;
+	}
+#endif
+	i = sq.front + sq.active;
+	if (i >= sq.max_count)
+		i -= sq.max_count;
+	while (sq.active < 2 && sq.active < sq.count) {
+		count = (sq.count == sq.active + 1)?sq.rear_size:sq.block_size;
+		if (count < sq.block_size && !sq.syncing)
+			/* last block not yet filled, and we're not syncing. */
+			break;
+
+		bdp = &tx_base[i];
+		bdp->cbd_datlen = count;
+
+		flush_dcache_range((ulong)sound_buffers[i],
+					(ulong)(sound_buffers[i] + count));
+
+		if (++i >= sq.max_count)
+			i = 0;
+
+		if (sq.active == 0) {
+			/* The SMC does not load its fifo until the first
+			 * TDM frame pulse, so the transmit data gets shifted
+			 * by one word.  To compensate for this, we incorrectly
+			 * transmit the first buffer and shorten it by one
+			 * word.  Subsequent buffers are then aligned properly.
+			 */
+			bdp->cbd_datlen -= 2;
+
+			/* Start up the SMC Transmitter.
+			*/
+			cp = cpmp;
+			cp->cp_smc[1].smc_smcmr |= SMCMR_TEN;
+			cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2,
+					CPM_CR_RESTART_TX) | CPM_CR_FLG;
+			while (cp->cp_cpcr & CPM_CR_FLG);
+		}
+
+		/* Buffer is ready now.
+		*/
+		bdp->cbd_sc |= BD_SC_READY;
+
+		++sq.active;
+	}
+	spin_unlock_irqrestore(&cs4218_lock, flags);
+}
+
+
+static void CS_Record(void)
+{
+	unsigned long flags;
+	volatile smc_t		*sp;
+
+	if (read_sq.active)
+		return;
+
+	/* Protect buffer */
+	spin_lock_irqsave(&cs4218_lock, flags);
+
+	/* This is all we have to do......Just start it up.
+	*/
+	sp = &cpmp->cp_smc[1];
+	sp->smc_smcmr |= SMCMR_REN;
+
+	read_sq.active = 1;
+
+        spin_unlock_irqrestore(&cs4218_lock, flags);
+}
+
+
+static void
+cs4218_tdm_tx_intr(void *devid)
+{
+	int i = sq.front;
+	volatile cbd_t *bdp;
+
+	while (sq.active > 0) {
+		bdp = &tx_base[i];
+		if (bdp->cbd_sc & BD_SC_READY)
+			break;	/* this frame is still going */
+		--sq.count;
+		--sq.active;
+		if (++i >= sq.max_count)
+			i = 0;
+	}
+	if (i != sq.front)
+		WAKE_UP(sq.action_queue);
+	sq.front = i;
+
+	CS_Play();
+
+	if (!sq.active)
+		WAKE_UP(sq.sync_queue);
+}
+
+
+static void
+cs4218_tdm_rx_intr(void *devid)
+{
+
+	/* We want to blow 'em off when shutting down.
+	*/
+	if (read_sq.active == 0)
+		return;
+
+	/* Check multiple buffers in case we were held off from
+	 * interrupt processing for a long time.  Geeze, I really hope
+	 * this doesn't happen.
+	 */
+	while ((rx_base[read_sq.rear].cbd_sc & BD_SC_EMPTY) == 0) {
+
+		/* Invalidate the data cache range for this buffer.
+		*/
+		invalidate_dcache_range(
+		    (uint)(sound_read_buffers[read_sq.rear]),
+		    (uint)(sound_read_buffers[read_sq.rear] + read_sq.block_size));
+
+		/* Make buffer available again and move on.
+		*/
+		rx_base[read_sq.rear].cbd_sc |= BD_SC_EMPTY;
+		read_sq.rear++;
+
+		/* Wrap the buffer ring.
+		*/
+		if (read_sq.rear >= read_sq.max_active)
+			read_sq.rear = 0;
+
+		/* If we have caught up to the front buffer, bump it.
+		 * This will cause weird (but not fatal) results if the
+		 * read loop is currently using this buffer.  The user is
+		 * behind in this case anyway, so weird things are going
+		 * to happen.
+		 */
+		if (read_sq.rear == read_sq.front) {
+			read_sq.front++;
+			if (read_sq.front >= read_sq.max_active)
+				read_sq.front = 0;
+		}
+	}
+
+	WAKE_UP(read_sq.action_queue);
+}
+
+static void cs_nosound(unsigned long xx)
+{
+	unsigned long flags;
+
+	/* not sure if this is needed, since hardware command is #if 0'd */
+	spin_lock_irqsave(&cs4218_lock, flags);
+	if (beep_playing) {
+#if 0
+		st_le16(&beep_dbdma_cmd->command, DBDMA_STOP);
+#endif
+		beep_playing = 0;
+	}
+	spin_unlock_irqrestore(&cs4218_lock, flags);
+}
+
+static struct timer_list beep_timer = TIMER_INITIALIZER(cs_nosound, 0, 0);
+};
+
+static void cs_mksound(unsigned int hz, unsigned int ticks)
+{
+	unsigned long flags;
+	int beep_speed = BEEP_SPEED;
+	int srate = cs4218_freqs[beep_speed];
+	int period, ncycles, nsamples;
+	int i, j, f;
+	short *p;
+	static int beep_hz_cache;
+	static int beep_nsamples_cache;
+	static int beep_volume_cache;
+
+	if (hz <= srate / BEEP_BUFLEN || hz > srate / 2) {
+#if 1
+		/* this is a hack for broken X server code */
+		hz = 750;
+		ticks = 12;
+#else
+		/* cancel beep currently playing */
+		awacs_nosound(0);
+		return;
+#endif
+	}
+	/* lock while modifying beep_timer */
+	spin_lock_irqsave(&cs4218_lock, flags);
+	del_timer(&beep_timer);
+	if (ticks) {
+		beep_timer.expires = jiffies + ticks;
+		add_timer(&beep_timer);
+	}
+	if (beep_playing || sq.active || beep_buf == NULL) {
+		spin_unlock_irqrestore(&cs4218_lock, flags);
+		return;		/* too hard, sorry :-( */
+	}
+	beep_playing = 1;
+#if 0
+	st_le16(&beep_dbdma_cmd->command, OUTPUT_MORE + BR_ALWAYS);
+#endif
+	spin_unlock_irqrestore(&cs4218_lock, flags);
+
+	if (hz == beep_hz_cache && beep_volume == beep_volume_cache) {
+		nsamples = beep_nsamples_cache;
+	} else {
+		period = srate * 256 / hz;	/* fixed point */
+		ncycles = BEEP_BUFLEN * 256 / period;
+		nsamples = (period * ncycles) >> 8;
+		f = ncycles * 65536 / nsamples;
+		j = 0;
+		p = beep_buf;
+		for (i = 0; i < nsamples; ++i, p += 2) {
+			p[0] = p[1] = beep_wform[j >> 8] * beep_volume;
+			j = (j + f) & 0xffff;
+		}
+		beep_hz_cache = hz;
+		beep_volume_cache = beep_volume;
+		beep_nsamples_cache = nsamples;
+	}
+
+#if 0
+	st_le16(&beep_dbdma_cmd->req_count, nsamples*4);
+	st_le16(&beep_dbdma_cmd->xfer_status, 0);
+	st_le32(&beep_dbdma_cmd->cmd_dep, virt_to_bus(beep_dbdma_cmd));
+	st_le32(&beep_dbdma_cmd->phy_addr, virt_to_bus(beep_buf));
+	awacs_beep_state = 1;
+
+	spin_lock_irqsave(&cs4218_lock, flags);
+	if (beep_playing) {	/* i.e. haven't been terminated already */
+		out_le32(&awacs_txdma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
+		out_le32(&awacs->control,
+			 (in_le32(&awacs->control) & ~0x1f00)
+			 | (beep_speed << 8));
+		out_le32(&awacs->byteswap, 0);
+		out_le32(&awacs_txdma->cmdptr, virt_to_bus(beep_dbdma_cmd));
+		out_le32(&awacs_txdma->control, RUN | (RUN << 16));
+	}
+	spin_unlock_irqrestore(&cs4218_lock, flags);
+#endif
+}
+
+static MACHINE mach_cs4218 = {
+	.owner =	THIS_MODULE,
+	.name =		"HIOX CS4218",
+	.name2 =	"Built-in Sound",
+	.dma_alloc =	CS_Alloc,
+	.dma_free =	CS_Free,
+	.irqinit =	CS_IrqInit,
+#ifdef MODULE
+	.irqcleanup =	CS_IrqCleanup,
+#endif /* MODULE */
+	.init =		CS_Init,
+	.silence =	CS_Silence,
+	.setFormat =	CS_SetFormat,
+	.setVolume =	CS_SetVolume,
+	.play =		CS_Play
+};
+
+
+/*** Mid level stuff *********************************************************/
+
+
+static void sound_silence(void)
+{
+	/* update hardware settings one more */
+	(*sound.mach.init)();
+
+	(*sound.mach.silence)();
+}
+
+
+static void sound_init(void)
+{
+	(*sound.mach.init)();
+}
+
+
+static int sound_set_format(int format)
+{
+	return(*sound.mach.setFormat)(format);
+}
+
+
+static int sound_set_speed(int speed)
+{
+	if (speed < 0)
+		return(sound.soft.speed);
+
+	sound.soft.speed = speed;
+	(*sound.mach.init)();
+	if (sound.minDev == SND_DEV_DSP)
+		sound.dsp.speed = sound.soft.speed;
+
+	return(sound.soft.speed);
+}
+
+
+static int sound_set_stereo(int stereo)
+{
+	if (stereo < 0)
+		return(sound.soft.stereo);
+
+	stereo = !!stereo;    /* should be 0 or 1 now */
+
+	sound.soft.stereo = stereo;
+	if (sound.minDev == SND_DEV_DSP)
+		sound.dsp.stereo = stereo;
+	(*sound.mach.init)();
+
+	return(stereo);
+}
+
+
+static int sound_set_volume(int volume)
+{
+	return(*sound.mach.setVolume)(volume);
+}
+
+static ssize_t sound_copy_translate(const u_char *userPtr,
+				    size_t userCount,
+				    u_char frame[], ssize_t *frameUsed,
+				    ssize_t frameLeft)
+{
+	ssize_t (*ct_func)(const u_char *, size_t, u_char *, ssize_t *, ssize_t) = NULL;
+
+	switch (sound.soft.format) {
+	case AFMT_MU_LAW:
+		ct_func = sound.trans_write->ct_ulaw;
+		break;
+	case AFMT_A_LAW:
+		ct_func = sound.trans_write->ct_alaw;
+		break;
+	case AFMT_S8:
+		ct_func = sound.trans_write->ct_s8;
+		break;
+	case AFMT_U8:
+		ct_func = sound.trans_write->ct_u8;
+		break;
+	case AFMT_S16_BE:
+		ct_func = sound.trans_write->ct_s16be;
+		break;
+	case AFMT_U16_BE:
+		ct_func = sound.trans_write->ct_u16be;
+		break;
+	case AFMT_S16_LE:
+		ct_func = sound.trans_write->ct_s16le;
+		break;
+	case AFMT_U16_LE:
+		ct_func = sound.trans_write->ct_u16le;
+		break;
+	}
+	if (ct_func)
+		return ct_func(userPtr, userCount, frame, frameUsed, frameLeft);
+	else
+		return 0;
+}
+
+static ssize_t sound_copy_translate_read(const u_char *userPtr,
+				    size_t userCount,
+				    u_char frame[], ssize_t *frameUsed,
+				    ssize_t frameLeft)
+{
+	ssize_t (*ct_func)(const u_char *, size_t, u_char *, ssize_t *, ssize_t) = NULL;
+
+	switch (sound.soft.format) {
+	case AFMT_MU_LAW:
+		ct_func = sound.trans_read->ct_ulaw;
+		break;
+	case AFMT_A_LAW:
+		ct_func = sound.trans_read->ct_alaw;
+		break;
+	case AFMT_S8:
+		ct_func = sound.trans_read->ct_s8;
+		break;
+	case AFMT_U8:
+		ct_func = sound.trans_read->ct_u8;
+		break;
+	case AFMT_S16_BE:
+		ct_func = sound.trans_read->ct_s16be;
+		break;
+	case AFMT_U16_BE:
+		ct_func = sound.trans_read->ct_u16be;
+		break;
+	case AFMT_S16_LE:
+		ct_func = sound.trans_read->ct_s16le;
+		break;
+	case AFMT_U16_LE:
+		ct_func = sound.trans_read->ct_u16le;
+		break;
+	}
+	if (ct_func)
+		return ct_func(userPtr, userCount, frame, frameUsed, frameLeft);
+	else
+		return 0;
+}
+
+
+/*
+ * /dev/mixer abstraction
+ */
+
+static int mixer_open(struct inode *inode, struct file *file)
+{
+	mixer.busy = 1;
+	return nonseekable_open(inode, file);
+}
+
+
+static int mixer_release(struct inode *inode, struct file *file)
+{
+	mixer.busy = 0;
+	return 0;
+}
+
+
+static int mixer_ioctl(struct inode *inode, struct file *file, u_int cmd,
+		       u_long arg)
+{
+	int data;
+	uint tmpcs;
+
+	if (_SIOC_DIR(cmd) & _SIOC_WRITE)
+	    mixer.modify_counter++;
+	if (cmd == OSS_GETVERSION)
+	    return IOCTL_OUT(arg, SOUND_VERSION);
+	switch (cmd) {
+		case SOUND_MIXER_INFO: {
+		    mixer_info info;
+		    strlcpy(info.id, "CS4218_TDM", sizeof(info.id));
+		    strlcpy(info.name, "CS4218_TDM", sizeof(info.name));
+		    info.name[sizeof(info.name)-1] = 0;
+		    info.modify_counter = mixer.modify_counter;
+		    if (copy_to_user((int *)arg, &info, sizeof(info)))
+		    		return -EFAULT;
+		    return 0;
+		}
+		case SOUND_MIXER_READ_DEVMASK:
+			data = SOUND_MASK_VOLUME | SOUND_MASK_LINE
+				| SOUND_MASK_MIC | SOUND_MASK_RECLEV
+				| SOUND_MASK_ALTPCM;
+			return IOCTL_OUT(arg, data);
+		case SOUND_MIXER_READ_RECMASK:
+			data = SOUND_MASK_LINE | SOUND_MASK_MIC;
+			return IOCTL_OUT(arg, data);
+		case SOUND_MIXER_READ_RECSRC:
+			if (cs4218_control & CS_DO1)
+				data = SOUND_MASK_LINE;
+			else
+				data = SOUND_MASK_MIC;
+			return IOCTL_OUT(arg, data);
+		case SOUND_MIXER_WRITE_RECSRC:
+			IOCTL_IN(arg, data);
+			data &= (SOUND_MASK_LINE | SOUND_MASK_MIC);
+			if (data & SOUND_MASK_LINE)
+				tmpcs = cs4218_control |
+						(CS_ISL | CS_ISR | CS_DO1);
+			if (data & SOUND_MASK_MIC)
+				tmpcs = cs4218_control &
+						~(CS_ISL | CS_ISR | CS_DO1);
+			if (tmpcs != cs4218_control)
+				cs4218_ctl_write(tmpcs);
+			return IOCTL_OUT(arg, data);
+		case SOUND_MIXER_READ_STEREODEVS:
+			data = SOUND_MASK_VOLUME | SOUND_MASK_RECLEV;
+			return IOCTL_OUT(arg, data);
+		case SOUND_MIXER_READ_CAPS:
+			return IOCTL_OUT(arg, 0);
+		case SOUND_MIXER_READ_VOLUME:
+			data = (cs4218_control & CS_MUTE)? 0:
+				cs_get_volume(cs4218_control);
+			return IOCTL_OUT(arg, data);
+		case SOUND_MIXER_WRITE_VOLUME:
+			IOCTL_IN(arg, data);
+			return IOCTL_OUT(arg, sound_set_volume(data));
+		case SOUND_MIXER_WRITE_ALTPCM:	/* really bell volume */
+			IOCTL_IN(arg, data);
+			beep_volume = data & 0xff;
+			/* fall through */
+		case SOUND_MIXER_READ_ALTPCM:
+			return IOCTL_OUT(arg, beep_volume);
+		case SOUND_MIXER_WRITE_RECLEV:
+			IOCTL_IN(arg, data);
+			data = cs_set_gain(data);
+			return IOCTL_OUT(arg, data);
+		case SOUND_MIXER_READ_RECLEV:
+			data = cs_get_gain(cs4218_control);
+			return IOCTL_OUT(arg, data);
+	}
+
+	return -EINVAL;
+}
+
+
+static struct file_operations mixer_fops =
+{
+	.owner =	THIS_MODULE,
+	.llseek =	sound_lseek,
+	.ioctl =	mixer_ioctl,
+	.open =		mixer_open,
+	.release =	mixer_release,
+};
+
+
+static void __init mixer_init(void)
+{
+	mixer_unit = register_sound_mixer(&mixer_fops, -1);
+	if (mixer_unit < 0)
+		return;
+
+	mixer.busy = 0;
+	sound.treble = 0;
+	sound.bass = 0;
+
+	/* Set Line input, no gain, no attenuation.
+	*/
+	cs4218_control = CS_ISL | CS_ISR | CS_DO1;
+	cs4218_control |= CS_LGAIN_SET(0) | CS_RGAIN_SET(0);
+	cs4218_control |= CS_LATTEN_SET(0) | CS_RATTEN_SET(0);
+	cs4218_ctl_write(cs4218_control);
+}
+
+
+/*
+ * Sound queue stuff, the heart of the driver
+ */
+
+
+static int sq_allocate_buffers(void)
+{
+	int i;
+
+	if (sound_buffers)
+		return 0;
+	sound_buffers = kmalloc (numBufs * sizeof(char *), GFP_KERNEL);
+	if (!sound_buffers)
+		return -ENOMEM;
+	for (i = 0; i < numBufs; i++) {
+		sound_buffers[i] = sound.mach.dma_alloc (bufSize << 10, GFP_KERNEL);
+		if (!sound_buffers[i]) {
+			while (i--)
+				sound.mach.dma_free (sound_buffers[i], bufSize << 10);
+			kfree (sound_buffers);
+			sound_buffers = 0;
+			return -ENOMEM;
+		}
+	}
+	return 0;
+}
+
+
+static void sq_release_buffers(void)
+{
+	int i;
+
+	if (sound_buffers) {
+		for (i = 0; i < numBufs; i++)
+			sound.mach.dma_free (sound_buffers[i], bufSize << 10);
+		kfree (sound_buffers);
+		sound_buffers = 0;
+	}
+}
+
+
+static int sq_allocate_read_buffers(void)
+{
+	int i;
+
+	if (sound_read_buffers)
+		return 0;
+	sound_read_buffers = kmalloc(numReadBufs * sizeof(char *), GFP_KERNEL);
+	if (!sound_read_buffers)
+		return -ENOMEM;
+	for (i = 0; i < numBufs; i++) {
+		sound_read_buffers[i] = sound.mach.dma_alloc (readbufSize<<10,
+							      GFP_KERNEL);
+		if (!sound_read_buffers[i]) {
+			while (i--)
+				sound.mach.dma_free (sound_read_buffers[i],
+						     readbufSize << 10);
+			kfree (sound_read_buffers);
+			sound_read_buffers = 0;
+			return -ENOMEM;
+		}
+	}
+	return 0;
+}
+
+static void sq_release_read_buffers(void)
+{
+	int i;
+
+	if (sound_read_buffers) {
+		cpmp->cp_smc[1].smc_smcmr &= ~SMCMR_REN;
+		for (i = 0; i < numReadBufs; i++)
+			sound.mach.dma_free (sound_read_buffers[i],
+					     bufSize << 10);
+		kfree (sound_read_buffers);
+		sound_read_buffers = 0;
+	}
+}
+
+
+static void sq_setup(int numBufs, int bufSize, char **write_buffers)
+{
+	int i;
+	volatile cbd_t *bdp;
+	volatile cpm8xx_t	*cp;
+	volatile smc_t	*sp;
+
+	/* Make sure the SMC transmit is shut down.
+	*/
+	cp = cpmp;
+	sp = &cpmp->cp_smc[1];
+	sp->smc_smcmr &= ~SMCMR_TEN;
+
+	sq.max_count = numBufs;
+	sq.max_active = numBufs;
+	sq.block_size = bufSize;
+	sq.buffers = write_buffers;
+
+	sq.front = sq.count = 0;
+	sq.rear = -1;
+	sq.syncing = 0;
+	sq.active = 0;
+
+	bdp = tx_base;
+	for (i=0; i<numBufs; i++) {
+		bdp->cbd_bufaddr = virt_to_bus(write_buffers[i]);
+		bdp++;
+	}
+
+	/* This causes the SMC to sync up with the first buffer again.
+	*/
+	cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2, CPM_CR_INIT_TX) | CPM_CR_FLG;
+	while (cp->cp_cpcr & CPM_CR_FLG);
+}
+
+static void read_sq_setup(int numBufs, int bufSize, char **read_buffers)
+{
+	int i;
+	volatile cbd_t *bdp;
+	volatile cpm8xx_t	*cp;
+	volatile smc_t	*sp;
+
+	/* Make sure the SMC receive is shut down.
+	*/
+	cp = cpmp;
+	sp = &cpmp->cp_smc[1];
+	sp->smc_smcmr &= ~SMCMR_REN;
+
+	read_sq.max_count = numBufs;
+	read_sq.max_active = numBufs;
+	read_sq.block_size = bufSize;
+	read_sq.buffers = read_buffers;
+
+	read_sq.front = read_sq.count = 0;
+	read_sq.rear = 0;
+	read_sq.rear_size = 0;
+	read_sq.syncing = 0;
+	read_sq.active = 0;
+
+	bdp = rx_base;
+	for (i=0; i<numReadBufs; i++) {
+		bdp->cbd_bufaddr = virt_to_bus(read_buffers[i]);
+		bdp->cbd_datlen = read_sq.block_size;
+		bdp++;
+	}
+
+	/* This causes the SMC to sync up with the first buffer again.
+	*/
+	cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2, CPM_CR_INIT_RX) | CPM_CR_FLG;
+	while (cp->cp_cpcr & CPM_CR_FLG);
+}
+
+
+static void sq_play(void)
+{
+	(*sound.mach.play)();
+}
+
+
+/* ++TeSche: radically changed this one too */
+
+static ssize_t sq_write(struct file *file, const char *src, size_t uLeft,
+			loff_t *ppos)
+{
+	ssize_t uWritten = 0;
+	u_char *dest;
+	ssize_t uUsed, bUsed, bLeft;
+
+	/* ++TeSche: Is something like this necessary?
+	 * Hey, that's an honest question! Or does any other part of the
+	 * filesystem already checks this situation? I really don't know.
+	 */
+	if (uLeft == 0)
+		return 0;
+
+	/* The interrupt doesn't start to play the last, incomplete frame.
+	 * Thus we can append to it without disabling the interrupts! (Note
+	 * also that sq.rear isn't affected by the interrupt.)
+	 */
+
+	if (sq.count > 0 && (bLeft = sq.block_size-sq.rear_size) > 0) {
+		dest = sq_block_address(sq.rear);
+		bUsed = sq.rear_size;
+		uUsed = sound_copy_translate(src, uLeft, dest, &bUsed, bLeft);
+		if (uUsed <= 0)
+			return uUsed;
+		src += uUsed;
+		uWritten += uUsed;
+		uLeft -= uUsed;
+		sq.rear_size = bUsed;
+	}
+
+	do {
+		while (sq.count == sq.max_active) {
+			sq_play();
+			if (NON_BLOCKING(sq.open_mode))
+				return uWritten > 0 ? uWritten : -EAGAIN;
+			SLEEP(sq.action_queue);
+			if (SIGNAL_RECEIVED)
+				return uWritten > 0 ? uWritten : -EINTR;
+		}
+
+		/* Here, we can avoid disabling the interrupt by first
+		 * copying and translating the data, and then updating
+		 * the sq variables. Until this is done, the interrupt
+		 * won't see the new frame and we can work on it
+		 * undisturbed.
+		 */
+
+		dest = sq_block_address((sq.rear+1) % sq.max_count);
+		bUsed = 0;
+		bLeft = sq.block_size;
+		uUsed = sound_copy_translate(src, uLeft, dest, &bUsed, bLeft);
+		if (uUsed <= 0)
+			break;
+		src += uUsed;
+		uWritten += uUsed;
+		uLeft -= uUsed;
+		if (bUsed) {
+			sq.rear = (sq.rear+1) % sq.max_count;
+			sq.rear_size = bUsed;
+			sq.count++;
+		}
+	} while (bUsed);   /* uUsed may have been 0 */
+
+	sq_play();
+
+	return uUsed < 0? uUsed: uWritten;
+}
+
+
+/***********/
+
+/* Here is how the values are used for reading.
+ * The value 'active' simply indicates the DMA is running.  This is
+ * done so the driver semantics are DMA starts when the first read is
+ * posted.  The value 'front' indicates the buffer we should next
+ * send to the user.  The value 'rear' indicates the buffer the DMA is
+ * currently filling.  When 'front' == 'rear' the buffer "ring" is
+ * empty (we always have an empty available).  The 'rear_size' is used
+ * to track partial offsets into the current buffer.  Right now, I just keep
+ * The DMA running.  If the reader can't keep up, the interrupt tosses
+ * the oldest buffer.  We could also shut down the DMA in this case.
+ */
+static ssize_t sq_read(struct file *file, char *dst, size_t uLeft,
+                       loff_t *ppos)
+{
+
+	ssize_t	uRead, bLeft, bUsed, uUsed;
+
+	if (uLeft == 0)
+		return 0;
+
+	if (!read_sq.active)
+		CS_Record();	/* Kick off the record process. */
+
+	uRead = 0;
+
+	/* Move what the user requests, depending upon other options.
+	*/
+	while (uLeft > 0) {
+
+		/* When front == rear, the DMA is not done yet.
+		*/
+		while (read_sq.front == read_sq.rear) {
+			if (NON_BLOCKING(read_sq.open_mode)) {
+			       return uRead > 0 ? uRead : -EAGAIN;
+			}
+			SLEEP(read_sq.action_queue);
+			if (SIGNAL_RECEIVED)
+				return uRead > 0 ? uRead : -EINTR;
+		}
+
+		/* The amount we move is either what is left in the
+		 * current buffer or what the user wants.
+		 */
+		bLeft = read_sq.block_size - read_sq.rear_size;
+		bUsed = read_sq.rear_size;
+		uUsed = sound_copy_translate_read(dst, uLeft,
+			read_sq.buffers[read_sq.front], &bUsed, bLeft);
+		if (uUsed <= 0)
+			return uUsed;
+		dst += uUsed;
+		uRead += uUsed;
+		uLeft -= uUsed;
+		read_sq.rear_size += bUsed;
+		if (read_sq.rear_size >= read_sq.block_size) {
+			read_sq.rear_size = 0;
+			read_sq.front++;
+			if (read_sq.front >= read_sq.max_active)
+				read_sq.front = 0;
+		}
+	}
+	return uRead;
+}
+
+static int sq_open(struct inode *inode, struct file *file)
+{
+	int rc = 0;
+
+	if (file->f_mode & FMODE_WRITE) {
+		if (sq.busy) {
+			rc = -EBUSY;
+			if (NON_BLOCKING(file->f_flags))
+				goto err_out;
+			rc = -EINTR;
+			while (sq.busy) {
+				SLEEP(sq.open_queue);
+				if (SIGNAL_RECEIVED)
+					goto err_out;
+			}
+		}
+		sq.busy = 1; /* Let's play spot-the-race-condition */
+
+		if (sq_allocate_buffers()) goto err_out_nobusy;
+
+		sq_setup(numBufs, bufSize<<10,sound_buffers);
+		sq.open_mode = file->f_mode;
+	}
+
+
+	if (file->f_mode & FMODE_READ) {
+		if (read_sq.busy) {
+			rc = -EBUSY;
+			if (NON_BLOCKING(file->f_flags))
+				goto err_out;
+			rc = -EINTR;
+			while (read_sq.busy) {
+				SLEEP(read_sq.open_queue);
+				if (SIGNAL_RECEIVED)
+					goto err_out;
+			}
+			rc = 0;
+		}
+		read_sq.busy = 1;
+		if (sq_allocate_read_buffers()) goto err_out_nobusy;
+
+		read_sq_setup(numReadBufs,readbufSize<<10, sound_read_buffers);
+		read_sq.open_mode = file->f_mode;
+	}
+
+	/* Start up the 4218 by:
+	 * Reset.
+	 * Enable, unreset.
+	 */
+	*((volatile uint *)HIOX_CSR4_ADDR) &= ~HIOX_CSR4_RSTAUDIO;
+	eieio();
+	*((volatile uint *)HIOX_CSR4_ADDR) |= HIOX_CSR4_ENAUDIO;
+	mdelay(50);
+	*((volatile uint *)HIOX_CSR4_ADDR) |= HIOX_CSR4_RSTAUDIO;
+
+	/* We need to send the current control word in case someone
+	 * opened /dev/mixer and changed things while we were shut
+	 * down.  Chances are good the initialization that follows
+	 * would have done this, but it is still possible it wouldn't.
+	 */
+	cs4218_ctl_write(cs4218_control);
+
+	sound.minDev = iminor(inode) & 0x0f;
+	sound.soft = sound.dsp;
+	sound.hard = sound.dsp;
+	sound_init();
+	if ((iminor(inode) & 0x0f) == SND_DEV_AUDIO) {
+		sound_set_speed(8000);
+		sound_set_stereo(0);
+		sound_set_format(AFMT_MU_LAW);
+	}
+
+	return nonseekable_open(inode, file);
+
+err_out_nobusy:
+	if (file->f_mode & FMODE_WRITE) {
+		sq.busy = 0;
+		WAKE_UP(sq.open_queue);
+	}
+	if (file->f_mode & FMODE_READ) {
+		read_sq.busy = 0;
+		WAKE_UP(read_sq.open_queue);
+	}
+err_out:
+	return rc;
+}
+
+
+static void sq_reset(void)
+{
+	sound_silence();
+	sq.active = 0;
+	sq.count = 0;
+	sq.front = (sq.rear+1) % sq.max_count;
+#if 0
+	init_tdm_buffers();
+#endif
+}
+
+
+static int sq_fsync(struct file *filp, struct dentry *dentry)
+{
+	int rc = 0;
+
+	sq.syncing = 1;
+	sq_play();	/* there may be an incomplete frame waiting */
+
+	while (sq.active) {
+		SLEEP(sq.sync_queue);
+		if (SIGNAL_RECEIVED) {
+			/* While waiting for audio output to drain, an
+			 * interrupt occurred.  Stop audio output immediately
+			 * and clear the queue. */
+			sq_reset();
+			rc = -EINTR;
+			break;
+		}
+	}
+
+	sq.syncing = 0;
+	return rc;
+}
+
+static int sq_release(struct inode *inode, struct file *file)
+{
+	int rc = 0;
+
+	if (sq.busy)
+		rc = sq_fsync(file, file->f_dentry);
+	sound.soft = sound.dsp;
+	sound.hard = sound.dsp;
+	sound_silence();
+
+	sq_release_read_buffers();
+	sq_release_buffers();
+
+	if (file->f_mode & FMODE_READ) {
+		read_sq.busy = 0;
+		WAKE_UP(read_sq.open_queue);
+	}
+
+	if (file->f_mode & FMODE_WRITE) {
+		sq.busy = 0;
+		WAKE_UP(sq.open_queue);
+	}
+
+	/* Shut down the SMC.
+	*/
+	cpmp->cp_smc[1].smc_smcmr &= ~(SMCMR_TEN | SMCMR_REN);
+
+	/* Shut down the codec.
+	*/
+	*((volatile uint *)HIOX_CSR4_ADDR) |= HIOX_CSR4_RSTAUDIO;
+	eieio();
+	*((volatile uint *)HIOX_CSR4_ADDR) &= ~HIOX_CSR4_ENAUDIO;
+
+	/* Wake up a process waiting for the queue being released.
+	 * Note: There may be several processes waiting for a call
+	 * to open() returning. */
+
+	return rc;
+}
+
+
+static int sq_ioctl(struct inode *inode, struct file *file, u_int cmd,
+		    u_long arg)
+{
+	u_long fmt;
+	int data;
+#if 0
+	int size, nbufs;
+#else
+	int size;
+#endif
+
+	switch (cmd) {
+	case SNDCTL_DSP_RESET:
+		sq_reset();
+		return 0;
+	case SNDCTL_DSP_POST:
+	case SNDCTL_DSP_SYNC:
+		return sq_fsync(file, file->f_dentry);
+
+		/* ++TeSche: before changing any of these it's
+		 * probably wise to wait until sound playing has
+		 * settled down. */
+	case SNDCTL_DSP_SPEED:
+		sq_fsync(file, file->f_dentry);
+		IOCTL_IN(arg, data);
+		return IOCTL_OUT(arg, sound_set_speed(data));
+	case SNDCTL_DSP_STEREO:
+		sq_fsync(file, file->f_dentry);
+		IOCTL_IN(arg, data);
+		return IOCTL_OUT(arg, sound_set_stereo(data));
+	case SOUND_PCM_WRITE_CHANNELS:
+		sq_fsync(file, file->f_dentry);
+		IOCTL_IN(arg, data);
+		return IOCTL_OUT(arg, sound_set_stereo(data-1)+1);
+	case SNDCTL_DSP_SETFMT:
+		sq_fsync(file, file->f_dentry);
+		IOCTL_IN(arg, data);
+		return IOCTL_OUT(arg, sound_set_format(data));
+	case SNDCTL_DSP_GETFMTS:
+		fmt = 0;
+		if (sound.trans_write) {
+			if (sound.trans_write->ct_ulaw)
+				fmt |= AFMT_MU_LAW;
+			if (sound.trans_write->ct_alaw)
+				fmt |= AFMT_A_LAW;
+			if (sound.trans_write->ct_s8)
+				fmt |= AFMT_S8;
+			if (sound.trans_write->ct_u8)
+				fmt |= AFMT_U8;
+			if (sound.trans_write->ct_s16be)
+				fmt |= AFMT_S16_BE;
+			if (sound.trans_write->ct_u16be)
+				fmt |= AFMT_U16_BE;
+			if (sound.trans_write->ct_s16le)
+				fmt |= AFMT_S16_LE;
+			if (sound.trans_write->ct_u16le)
+				fmt |= AFMT_U16_LE;
+		}
+		return IOCTL_OUT(arg, fmt);
+	case SNDCTL_DSP_GETBLKSIZE:
+		size = sq.block_size
+			* sound.soft.size * (sound.soft.stereo + 1)
+			/ (sound.hard.size * (sound.hard.stereo + 1));
+		return IOCTL_OUT(arg, size);
+	case SNDCTL_DSP_SUBDIVIDE:
+		break;
+#if 0	/* Sorry can't do this at the moment.  The CPM allocated buffers
+	 * long ago that can't be changed.
+	 */
+	case SNDCTL_DSP_SETFRAGMENT:
+		if (sq.count || sq.active || sq.syncing)
+			return -EINVAL;
+		IOCTL_IN(arg, size);
+		nbufs = size >> 16;
+		if (nbufs < 2 || nbufs > numBufs)
+			nbufs = numBufs;
+		size &= 0xffff;
+		if (size >= 8 && size <= 30) {
+			size = 1 << size;
+			size *= sound.hard.size * (sound.hard.stereo + 1);
+			size /= sound.soft.size * (sound.soft.stereo + 1);
+			if (size > (bufSize << 10))
+				size = bufSize << 10;
+		} else
+			size = bufSize << 10;
+		sq_setup(numBufs, size, sound_buffers);
+		sq.max_active = nbufs;
+		return 0;
+#endif
+
+	default:
+		return mixer_ioctl(inode, file, cmd, arg);
+	}
+	return -EINVAL;
+}
+
+
+
+static struct file_operations sq_fops =
+{
+	.owner =	THIS_MODULE,
+	.llseek =	sound_lseek,
+	.read =		sq_read,			/* sq_read */
+	.write =	sq_write,
+	.ioctl =	sq_ioctl,
+	.open =		sq_open,
+	.release =	sq_release,
+};
+
+
+static void __init sq_init(void)
+{
+	sq_unit = register_sound_dsp(&sq_fops, -1);
+	if (sq_unit < 0)
+		return;
+
+	init_waitqueue_head(&sq.action_queue);
+	init_waitqueue_head(&sq.open_queue);
+	init_waitqueue_head(&sq.sync_queue);
+	init_waitqueue_head(&read_sq.action_queue);
+	init_waitqueue_head(&read_sq.open_queue);
+	init_waitqueue_head(&read_sq.sync_queue);
+
+	sq.busy = 0;
+	read_sq.busy = 0;
+
+	/* whatever you like as startup mode for /dev/dsp,
+	 * (/dev/audio hasn't got a startup mode). note that
+	 * once changed a new open() will *not* restore these!
+	 */
+	sound.dsp.format = AFMT_S16_BE;
+	sound.dsp.stereo = 1;
+	sound.dsp.size = 16;
+
+	/* set minimum rate possible without expanding */
+	sound.dsp.speed = 8000;
+
+	/* before the first open to /dev/dsp this wouldn't be set */
+	sound.soft = sound.dsp;
+	sound.hard = sound.dsp;
+
+	sound_silence();
+}
+
+/*
+ * /dev/sndstat
+ */
+
+
+/* state.buf should not overflow! */
+
+static int state_open(struct inode *inode, struct file *file)
+{
+	char *buffer = state.buf, *mach = "", cs4218_buf[50];
+	int len = 0;
+
+	if (state.busy)
+		return -EBUSY;
+
+	state.ptr = 0;
+	state.busy = 1;
+
+	sprintf(cs4218_buf, "Crystal CS4218 on TDM, ");
+	mach = cs4218_buf;
+
+	len += sprintf(buffer+len, "%sDMA sound driver:\n", mach);
+
+	len += sprintf(buffer+len, "\tsound.format = 0x%x", sound.soft.format);
+	switch (sound.soft.format) {
+	case AFMT_MU_LAW:
+		len += sprintf(buffer+len, " (mu-law)");
+		break;
+	case AFMT_A_LAW:
+		len += sprintf(buffer+len, " (A-law)");
+		break;
+	case AFMT_U8:
+		len += sprintf(buffer+len, " (unsigned 8 bit)");
+		break;
+	case AFMT_S8:
+		len += sprintf(buffer+len, " (signed 8 bit)");
+		break;
+	case AFMT_S16_BE:
+		len += sprintf(buffer+len, " (signed 16 bit big)");
+		break;
+	case AFMT_U16_BE:
+		len += sprintf(buffer+len, " (unsigned 16 bit big)");
+		break;
+	case AFMT_S16_LE:
+		len += sprintf(buffer+len, " (signed 16 bit little)");
+		break;
+	case AFMT_U16_LE:
+		len += sprintf(buffer+len, " (unsigned 16 bit little)");
+		break;
+	}
+	len += sprintf(buffer+len, "\n");
+	len += sprintf(buffer+len, "\tsound.speed = %dHz (phys. %dHz)\n",
+		       sound.soft.speed, sound.hard.speed);
+	len += sprintf(buffer+len, "\tsound.stereo = 0x%x (%s)\n",
+		       sound.soft.stereo, sound.soft.stereo ? "stereo" : "mono");
+	len += sprintf(buffer+len, "\tsq.block_size = %d sq.max_count = %d"
+		       " sq.max_active = %d\n",
+		       sq.block_size, sq.max_count, sq.max_active);
+	len += sprintf(buffer+len, "\tsq.count = %d sq.rear_size = %d\n", sq.count,
+		       sq.rear_size);
+	len += sprintf(buffer+len, "\tsq.active = %d sq.syncing = %d\n",
+		       sq.active, sq.syncing);
+	state.len = len;
+	return nonseekable_open(inode, file);
+}
+
+
+static int state_release(struct inode *inode, struct file *file)
+{
+	state.busy = 0;
+	return 0;
+}
+
+
+static ssize_t state_read(struct file *file, char *buf, size_t count,
+			  loff_t *ppos)
+{
+	int n = state.len - state.ptr;
+	if (n > count)
+		n = count;
+	if (n <= 0)
+		return 0;
+	if (copy_to_user(buf, &state.buf[state.ptr], n))
+		return -EFAULT;
+	state.ptr += n;
+	return n;
+}
+
+
+static struct file_operations state_fops =
+{
+	.owner =	THIS_MODULE,
+	.llseek =	sound_lseek,
+	.read =		state_read,
+	.open =		state_open,
+	.release =	state_release,
+};
+
+
+static void __init state_init(void)
+{
+	state_unit = register_sound_special(&state_fops, SND_DEV_STATUS);
+	if (state_unit < 0)
+		return;
+	state.busy = 0;
+}
+
+
+/*** Common stuff ********************************************************/
+
+static long long sound_lseek(struct file *file, long long offset, int orig)
+{
+	return -ESPIPE;
+}
+
+
+/*** Config & Setup **********************************************************/
+
+
+int __init tdm8xx_sound_init(void)
+{
+	int i, has_sound;
+	uint			dp_offset;
+	volatile uint		*sirp;
+	volatile cbd_t		*bdp;
+	volatile cpm8xx_t	*cp;
+	volatile smc_t		*sp;
+	volatile smc_uart_t	*up;
+	volatile immap_t	*immap;
+
+	has_sound = 0;
+
+	/* Program the SI/TSA to use TDMa, connected to SMC2, for 4 bytes.
+	*/
+	cp = cpmp;	/* Get pointer to Communication Processor */
+	immap = (immap_t *)IMAP_ADDR;	/* and to internal registers */
+
+	/* Set all TDMa control bits to zero.  This enables most features
+	 * we want.
+	 */
+	cp->cp_simode &= ~0x00000fff;
+
+	/* Enable common receive/transmit clock pins, use IDL format.
+	 * Sync on falling edge, transmit rising clock, receive falling
+	 * clock, delay 1 bit on both Tx and Rx.  Common Tx/Rx clocks and
+	 * sync.
+	 * Connect SMC2 to TSA.
+	 */
+	cp->cp_simode |= 0x80000141;
+
+	/* Configure port A pins for TDMa operation.
+	 * The RPX-Lite (MPC850/823) loses SMC2 when TDM is used.
+	 */
+	immap->im_ioport.iop_papar |= 0x01c0; /* Enable TDMa functions */
+	immap->im_ioport.iop_padir |= 0x00c0; /* Enable TDMa Tx/Rx */
+	immap->im_ioport.iop_padir &= ~0x0100; /* Enable L1RCLKa */
+
+	immap->im_ioport.iop_pcpar |= 0x0800; /* Enable L1RSYNCa */
+	immap->im_ioport.iop_pcdir &= ~0x0800;
+
+	/* Initialize the SI TDM routing table.  We use TDMa only.
+	 * The receive table and transmit table each have only one
+	 * entry, to capture/send four bytes after each frame pulse.
+	 * The 16-bit ram entry is 0000 0001 1000 1111. (SMC2)
+	 */
+	cp->cp_sigmr = 0;
+	sirp = (uint *)cp->cp_siram;
+
+	*sirp = 0x018f0000;		/* Receive entry */
+	sirp += 64;
+	*sirp = 0x018f0000;		/* Tramsmit entry */
+
+	/* Enable single TDMa routing.
+	*/
+	cp->cp_sigmr = 0x04;
+
+	/* Initialize the SMC for transparent operation.
+	*/
+	sp = &cpmp->cp_smc[1];
+	up = (smc_uart_t *)&cp->cp_dparam[PROFF_SMC2];
+
+	/* We need to allocate a transmit and receive buffer
+	 * descriptors from dual port ram.
+	 */
+	dp_addr = cpm_dpalloc(sizeof(cbd_t) * numReadBufs, 8);
+
+	/* Set the physical address of the host memory
+	 * buffers in the buffer descriptors, and the
+	 * virtual address for us to work with.
+	 */
+	bdp = (cbd_t *)&cp->cp_dpmem[dp_addr];
+	up->smc_rbase = dp_offset;
+	rx_cur = rx_base = (cbd_t *)bdp;
+
+	for (i=0; i<(numReadBufs-1); i++) {
+		bdp->cbd_bufaddr = 0;
+		bdp->cbd_datlen = 0;
+		bdp->cbd_sc = BD_SC_EMPTY | BD_SC_INTRPT;
+		bdp++;
+	}
+	bdp->cbd_bufaddr = 0;
+	bdp->cbd_datlen = 0;
+	bdp->cbd_sc = BD_SC_WRAP | BD_SC_EMPTY | BD_SC_INTRPT;
+
+	/* Now, do the same for the transmit buffers.
+	*/
+	dp_offset = cpm_dpalloc(sizeof(cbd_t) * numBufs, 8);
+
+	bdp = (cbd_t *)&cp->cp_dpmem[dp_addr];
+	up->smc_tbase = dp_offset;
+	tx_cur = tx_base = (cbd_t *)bdp;
+
+	for (i=0; i<(numBufs-1); i++) {
+		bdp->cbd_bufaddr = 0;
+		bdp->cbd_datlen = 0;
+		bdp->cbd_sc = BD_SC_INTRPT;
+		bdp++;
+	}
+	bdp->cbd_bufaddr = 0;
+	bdp->cbd_datlen = 0;
+	bdp->cbd_sc = (BD_SC_WRAP | BD_SC_INTRPT);
+
+	/* Set transparent SMC mode.
+	 * A few things are specific to our application.  The codec interface
+	 * is MSB first, hence the REVD selection.  The CD/CTS pulse are
+	 * used by the TSA to indicate the frame start to the SMC.
+	 */
+	up->smc_rfcr = SCC_EB;
+	up->smc_tfcr = SCC_EB;
+	up->smc_mrblr = readbufSize * 1024;
+
+	/* Set 16-bit reversed data, transparent mode.
+	*/
+	sp->smc_smcmr = smcr_mk_clen(15) |
+		SMCMR_SM_TRANS | SMCMR_REVD | SMCMR_BS;
+
+	/* Enable and clear events.
+	 * Because of FIFO delays, all we need is the receive interrupt
+	 * and we can process both the current receive and current
+	 * transmit interrupt within a few microseconds of the transmit.
+	 */
+	sp->smc_smce = 0xff;
+	sp->smc_smcm = SMCM_TXE | SMCM_TX | SMCM_RX;
+
+	/* Send the CPM an initialize command.
+	*/
+	cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2,
+				CPM_CR_INIT_TRX) | CPM_CR_FLG;
+	while (cp->cp_cpcr & CPM_CR_FLG);
+
+	sound.mach = mach_cs4218;
+	has_sound = 1;
+
+	/* Initialize beep stuff */
+	orig_mksound = kd_mksound;
+	kd_mksound = cs_mksound;
+	beep_buf = (short *) kmalloc(BEEP_BUFLEN * 4, GFP_KERNEL);
+	if (beep_buf == NULL)
+		printk(KERN_WARNING "dmasound: no memory for "
+		       "beep buffer\n");
+
+	if (!has_sound)
+		return -ENODEV;
+
+	/* Initialize the software SPI.
+	*/
+	sw_spi_init();
+
+	/* Set up sound queue, /dev/audio and /dev/dsp. */
+
+	/* Set default settings. */
+	sq_init();
+
+	/* Set up /dev/sndstat. */
+	state_init();
+
+	/* Set up /dev/mixer. */
+	mixer_init();
+
+	if (!sound.mach.irqinit()) {
+		printk(KERN_ERR "DMA sound driver: Interrupt initialization failed\n");
+		return -ENODEV;
+	}
+#ifdef MODULE
+	irq_installed = 1;
+#endif
+
+	printk(KERN_INFO "DMA sound driver installed, using %d buffers of %dk.\n",
+	       numBufs, bufSize);
+
+	return 0;
+}
+
+/* Due to FIFOs and bit delays, the transmit interrupt occurs a few
+ * microseconds ahead of the receive interrupt.
+ * When we get an interrupt, we service the transmit first, then
+ * check for a receive to prevent the overhead of returning through
+ * the interrupt handler only to get back here right away during
+ * full duplex operation.
+ */
+static void
+cs4218_intr(void *dev_id, struct pt_regs *regs)
+{
+	volatile smc_t	*sp;
+	volatile cpm8xx_t	*cp;
+
+	sp = &cpmp->cp_smc[1];
+
+	if (sp->smc_smce & SCCM_TX) {
+		sp->smc_smce = SCCM_TX;
+		cs4218_tdm_tx_intr((void *)sp);
+	}
+
+	if (sp->smc_smce & SCCM_RX) {
+		sp->smc_smce = SCCM_RX;
+		cs4218_tdm_rx_intr((void *)sp);
+	}
+
+	if (sp->smc_smce & SCCM_TXE) {
+		/* Transmit underrun.  This happens with the application
+		 * didn't keep up sending buffers.  We tell the SMC to
+		 * restart, which will cause it to poll the current (next)
+		 * BD.  If the user supplied data since this occurred,
+		 * we just start running again.  If they didn't, the SMC
+		 * will poll the descriptor until data is placed there.
+		 */
+		sp->smc_smce = SCCM_TXE;
+		cp = cpmp;	/* Get pointer to Communication Processor */
+		cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2,
+					CPM_CR_RESTART_TX) | CPM_CR_FLG;
+		while (cp->cp_cpcr & CPM_CR_FLG);
+	}
+}
+
+
+#define MAXARGS		8	/* Should be sufficient for now */
+
+void __init dmasound_setup(char *str, int *ints)
+{
+	/* check the bootstrap parameter for "dmasound=" */
+
+	switch (ints[0]) {
+	case 3:
+		if ((ints[3] < 0) || (ints[3] > MAX_CATCH_RADIUS))
+			printk("dmasound_setup: invalid catch radius, using default = %d\n", catchRadius);
+		else
+			catchRadius = ints[3];
+		/* fall through */
+	case 2:
+		if (ints[1] < MIN_BUFFERS)
+			printk("dmasound_setup: invalid number of buffers, using default = %d\n", numBufs);
+		else
+			numBufs = ints[1];
+		if (ints[2] < MIN_BUFSIZE || ints[2] > MAX_BUFSIZE)
+			printk("dmasound_setup: invalid buffer size, using default = %d\n", bufSize);
+		else
+			bufSize = ints[2];
+		break;
+	case 0:
+		break;
+	default:
+		printk("dmasound_setup: invalid number of arguments\n");
+	}
+}
+
+/* Software SPI functions.
+ * These are on Port B.
+ */
+#define PB_SPICLK	((uint)0x00000002)
+#define PB_SPIMOSI	((uint)0x00000004)
+#define PB_SPIMISO	((uint)0x00000008)
+
+static
+void	sw_spi_init(void)
+{
+	volatile cpm8xx_t	*cp;
+	volatile uint		*hcsr4;
+
+	hcsr4 = (volatile uint *)HIOX_CSR4_ADDR;
+	cp = cpmp;	/* Get pointer to Communication Processor */
+
+	*hcsr4 &= ~HIOX_CSR4_AUDSPISEL;	/* Disable SPI select */
+
+	/* Make these Port B signals general purpose I/O.
+	 * First, make sure the clock is low.
+	 */
+	cp->cp_pbdat &= ~PB_SPICLK;
+	cp->cp_pbpar &= ~(PB_SPICLK | PB_SPIMOSI | PB_SPIMISO);
+
+	/* Clock and Master Output are outputs.
+	*/
+	cp->cp_pbdir |= (PB_SPICLK | PB_SPIMOSI);
+
+	/* Master Input.
+	*/
+	cp->cp_pbdir &= ~PB_SPIMISO;
+
+}
+
+/* Write the CS4218 control word out the SPI port.  While the
+ * the control word is going out, the status word is arriving.
+ */
+static
+uint	cs4218_ctl_write(uint ctlreg)
+{
+	uint	status;
+
+	sw_spi_io((u_char *)&ctlreg, (u_char *)&status, 4);
+
+	/* Shadow the control register.....I guess we could do
+	 * the same for the status, but for now we just return it
+	 * and let the caller decide.
+	 */
+	cs4218_control = ctlreg;
+	return status;
+}
+
+static
+void	sw_spi_io(u_char *obuf, u_char *ibuf, uint bcnt)
+{
+	int	bits, i;
+	u_char	outbyte, inbyte;
+	volatile cpm8xx_t	*cp;
+	volatile uint		*hcsr4;
+
+	hcsr4 = (volatile uint *)HIOX_CSR4_ADDR;
+	cp = cpmp;	/* Get pointer to Communication Processor */
+
+	/* The timing on the bus is pretty slow.  Code inefficiency
+	 * and eieio() is our friend here :-).
+	 */
+	cp->cp_pbdat &= ~PB_SPICLK;
+	*hcsr4 |= HIOX_CSR4_AUDSPISEL;	/* Enable SPI select */
+	eieio();
+
+	/* Clock in/out the bytes.  Data is valid on the falling edge
+	 * of the clock.  Data is MSB first.
+	 */
+	for (i=0; i<bcnt; i++) {
+		outbyte = *obuf++;
+		inbyte = 0;
+		for (bits=0; bits<8; bits++) {
+			eieio();
+			cp->cp_pbdat |= PB_SPICLK;
+			eieio();
+			if (outbyte & 0x80)
+				cp->cp_pbdat |= PB_SPIMOSI;
+			else
+				cp->cp_pbdat &= ~PB_SPIMOSI;
+			eieio();
+			cp->cp_pbdat &= ~PB_SPICLK;
+			eieio();
+			outbyte <<= 1;
+			inbyte <<= 1;
+			if (cp->cp_pbdat & PB_SPIMISO)
+				inbyte |= 1;
+		}
+		*ibuf++ = inbyte;
+	}
+
+	*hcsr4 &= ~HIOX_CSR4_AUDSPISEL;	/* Disable SPI select */
+	eieio();
+}
+
+void cleanup_module(void)
+{
+	if (irq_installed) {
+		sound_silence();
+#ifdef MODULE
+		sound.mach.irqcleanup();
+#endif
+	}
+
+	sq_release_read_buffers();
+	sq_release_buffers();
+
+	if (mixer_unit >= 0)
+		unregister_sound_mixer(mixer_unit);
+	if (state_unit >= 0)
+		unregister_sound_special(state_unit);
+	if (sq_unit >= 0)
+		unregister_sound_dsp(sq_unit);
+}
+
+module_init(tdm8xx_sound_init);
+module_exit(cleanup_module);
+
diff --git a/arch/ppc/8xx_io/enet.c b/arch/ppc/8xx_io/enet.c
new file mode 100644
index 0000000..4ea7158
--- /dev/null
+++ b/arch/ppc/8xx_io/enet.c
@@ -0,0 +1,971 @@
+/*
+ * Ethernet driver for Motorola MPC8xx.
+ * Copyright (c) 1997 Dan Malek (dmalek@jlc.net)
+ *
+ * I copied the basic skeleton from the lance driver, because I did not
+ * know how to write the Linux driver, but I did know how the LANCE worked.
+ *
+ * This version of the driver is somewhat selectable for the different
+ * processor/board combinations.  It works for the boards I know about
+ * now, and should be easily modified to include others.  Some of the
+ * configuration information is contained in <asm/commproc.h> and the
+ * remainder is here.
+ *
+ * Buffer descriptors are kept in the CPM dual port RAM, and the frame
+ * buffers are in the host memory.
+ *
+ * Right now, I am very watseful with the buffers.  I allocate memory
+ * pages and then divide them into 2K frame buffers.  This way I know I
+ * have buffers large enough to hold one frame within one buffer descriptor.
+ * Once I get this working, I will use 64 or 128 byte CPM buffers, which
+ * will be much more memory efficient and will easily handle lots of
+ * small packets.
+ *
+ */
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/ptrace.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/dma-mapping.h>
+#include <linux/bitops.h>
+
+#include <asm/8xx_immap.h>
+#include <asm/pgtable.h>
+#include <asm/mpc8xx.h>
+#include <asm/uaccess.h>
+#include <asm/commproc.h>
+
+/*
+ *				Theory of Operation
+ *
+ * The MPC8xx CPM performs the Ethernet processing on SCC1.  It can use
+ * an aribtrary number of buffers on byte boundaries, but must have at
+ * least two receive buffers to prevent constant overrun conditions.
+ *
+ * The buffer descriptors are allocated from the CPM dual port memory
+ * with the data buffers allocated from host memory, just like all other
+ * serial communication protocols.  The host memory buffers are allocated
+ * from the free page pool, and then divided into smaller receive and
+ * transmit buffers.  The size of the buffers should be a power of two,
+ * since that nicely divides the page.  This creates a ring buffer
+ * structure similar to the LANCE and other controllers.
+ *
+ * Like the LANCE driver:
+ * The driver runs as two independent, single-threaded flows of control.  One
+ * is the send-packet routine, which enforces single-threaded use by the
+ * cep->tx_busy flag.  The other thread is the interrupt handler, which is
+ * single threaded by the hardware and other software.
+ *
+ * The send packet thread has partial control over the Tx ring and the
+ * 'cep->tx_busy' flag.  It sets the tx_busy flag whenever it's queuing a Tx
+ * packet. If the next queue slot is empty, it clears the tx_busy flag when
+ * finished otherwise it sets the 'lp->tx_full' flag.
+ *
+ * The MBX has a control register external to the MPC8xx that has some
+ * control of the Ethernet interface.  Information is in the manual for
+ * your board.
+ *
+ * The RPX boards have an external control/status register.  Consult the
+ * programming documents for details unique to your board.
+ *
+ * For the TQM8xx(L) modules, there is no control register interface.
+ * All functions are directly controlled using I/O pins.  See <asm/commproc.h>.
+ */
+
+/* The transmitter timeout
+ */
+#define TX_TIMEOUT	(2*HZ)
+
+/* The number of Tx and Rx buffers.  These are allocated from the page
+ * pool.  The code may assume these are power of two, so it is best
+ * to keep them that size.
+ * We don't need to allocate pages for the transmitter.  We just use
+ * the skbuffer directly.
+ */
+#ifdef CONFIG_ENET_BIG_BUFFERS
+#define CPM_ENET_RX_PAGES	32
+#define CPM_ENET_RX_FRSIZE	2048
+#define CPM_ENET_RX_FRPPG	(PAGE_SIZE / CPM_ENET_RX_FRSIZE)
+#define RX_RING_SIZE		(CPM_ENET_RX_FRPPG * CPM_ENET_RX_PAGES)
+#define TX_RING_SIZE		64	/* Must be power of two */
+#define TX_RING_MOD_MASK	63	/*   for this to work */
+#else
+#define CPM_ENET_RX_PAGES	4
+#define CPM_ENET_RX_FRSIZE	2048
+#define CPM_ENET_RX_FRPPG	(PAGE_SIZE / CPM_ENET_RX_FRSIZE)
+#define RX_RING_SIZE		(CPM_ENET_RX_FRPPG * CPM_ENET_RX_PAGES)
+#define TX_RING_SIZE		8	/* Must be power of two */
+#define TX_RING_MOD_MASK	7	/*   for this to work */
+#endif
+
+/* The CPM stores dest/src/type, data, and checksum for receive packets.
+ */
+#define PKT_MAXBUF_SIZE		1518
+#define PKT_MINBUF_SIZE		64
+#define PKT_MAXBLR_SIZE		1520
+
+/* The CPM buffer descriptors track the ring buffers.  The rx_bd_base and
+ * tx_bd_base always point to the base of the buffer descriptors.  The
+ * cur_rx and cur_tx point to the currently available buffer.
+ * The dirty_tx tracks the current buffer that is being sent by the
+ * controller.  The cur_tx and dirty_tx are equal under both completely
+ * empty and completely full conditions.  The empty/ready indicator in
+ * the buffer descriptor determines the actual condition.
+ */
+struct scc_enet_private {
+	/* The saved address of a sent-in-place packet/buffer, for skfree(). */
+	struct	sk_buff* tx_skbuff[TX_RING_SIZE];
+	ushort	skb_cur;
+	ushort	skb_dirty;
+
+	/* CPM dual port RAM relative addresses.
+	*/
+	cbd_t	*rx_bd_base;		/* Address of Rx and Tx buffers. */
+	cbd_t	*tx_bd_base;
+	cbd_t	*cur_rx, *cur_tx;		/* The next free ring entry */
+	cbd_t	*dirty_tx;	/* The ring entries to be free()ed. */
+	scc_t	*sccp;
+
+	/* Virtual addresses for the receive buffers because we can't
+	 * do a __va() on them anymore.
+	 */
+	unsigned char *rx_vaddr[RX_RING_SIZE];
+	struct	net_device_stats stats;
+	uint	tx_full;
+	spinlock_t lock;
+};
+
+static int scc_enet_open(struct net_device *dev);
+static int scc_enet_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static int scc_enet_rx(struct net_device *dev);
+static void scc_enet_interrupt(void *dev_id, struct pt_regs *regs);
+static int scc_enet_close(struct net_device *dev);
+static struct net_device_stats *scc_enet_get_stats(struct net_device *dev);
+static void set_multicast_list(struct net_device *dev);
+
+/* Get this from various configuration locations (depends on board).
+*/
+/*static	ushort	my_enet_addr[] = { 0x0800, 0x3e26, 0x1559 };*/
+
+/* Typically, 860(T) boards use SCC1 for Ethernet, and other 8xx boards
+ * use SCC2. Some even may use SCC3.
+ * This is easily extended if necessary.
+ */
+#if defined(CONFIG_SCC3_ENET)
+#define CPM_CR_ENET	CPM_CR_CH_SCC3
+#define PROFF_ENET	PROFF_SCC3
+#define SCC_ENET	2		/* Index, not number! */
+#define CPMVEC_ENET	CPMVEC_SCC3
+#elif defined(CONFIG_SCC2_ENET)
+#define CPM_CR_ENET	CPM_CR_CH_SCC2
+#define PROFF_ENET	PROFF_SCC2
+#define SCC_ENET	1		/* Index, not number! */
+#define CPMVEC_ENET	CPMVEC_SCC2
+#elif defined(CONFIG_SCC1_ENET)
+#define CPM_CR_ENET	CPM_CR_CH_SCC1
+#define PROFF_ENET	PROFF_SCC1
+#define SCC_ENET	0		/* Index, not number! */
+#define CPMVEC_ENET	CPMVEC_SCC1
+#else
+#error CONFIG_SCCx_ENET not defined
+#endif
+
+static int
+scc_enet_open(struct net_device *dev)
+{
+
+	/* I should reset the ring buffers here, but I don't yet know
+	 * a simple way to do that.
+	 */
+
+	netif_start_queue(dev);
+	return 0;					/* Always succeed */
+}
+
+static int
+scc_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct scc_enet_private *cep = (struct scc_enet_private *)dev->priv;
+	volatile cbd_t	*bdp;
+
+	/* Fill in a Tx ring entry */
+	bdp = cep->cur_tx;
+
+#ifndef final_version
+	if (bdp->cbd_sc & BD_ENET_TX_READY) {
+		/* Ooops.  All transmit buffers are full.  Bail out.
+		 * This should not happen, since cep->tx_busy should be set.
+		 */
+		printk("%s: tx queue full!.\n", dev->name);
+		return 1;
+	}
+#endif
+
+	/* Clear all of the status flags.
+	 */
+	bdp->cbd_sc &= ~BD_ENET_TX_STATS;
+
+	/* If the frame is short, tell CPM to pad it.
+	*/
+	if (skb->len <= ETH_ZLEN)
+		bdp->cbd_sc |= BD_ENET_TX_PAD;
+	else
+		bdp->cbd_sc &= ~BD_ENET_TX_PAD;
+
+	/* Set buffer length and buffer pointer.
+	*/
+	bdp->cbd_datlen = skb->len;
+	bdp->cbd_bufaddr = __pa(skb->data);
+
+	/* Save skb pointer.
+	*/
+	cep->tx_skbuff[cep->skb_cur] = skb;
+
+	cep->stats.tx_bytes += skb->len;
+	cep->skb_cur = (cep->skb_cur+1) & TX_RING_MOD_MASK;
+
+	/* Push the data cache so the CPM does not get stale memory
+	 * data.
+	 */
+	flush_dcache_range((unsigned long)(skb->data),
+					(unsigned long)(skb->data + skb->len));
+
+	spin_lock_irq(&cep->lock);
+
+	/* Send it on its way.  Tell CPM its ready, interrupt when done,
+	 * its the last BD of the frame, and to put the CRC on the end.
+	 */
+	bdp->cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_INTR | BD_ENET_TX_LAST | BD_ENET_TX_TC);
+
+	dev->trans_start = jiffies;
+
+	/* If this was the last BD in the ring, start at the beginning again.
+	*/
+	if (bdp->cbd_sc & BD_ENET_TX_WRAP)
+		bdp = cep->tx_bd_base;
+	else
+		bdp++;
+
+	if (bdp->cbd_sc & BD_ENET_TX_READY) {
+		netif_stop_queue(dev);
+		cep->tx_full = 1;
+	}
+
+	cep->cur_tx = (cbd_t *)bdp;
+
+	spin_unlock_irq(&cep->lock);
+
+	return 0;
+}
+
+static void
+scc_enet_timeout(struct net_device *dev)
+{
+	struct scc_enet_private *cep = (struct scc_enet_private *)dev->priv;
+
+	printk("%s: transmit timed out.\n", dev->name);
+	cep->stats.tx_errors++;
+#ifndef final_version
+	{
+		int	i;
+		cbd_t	*bdp;
+		printk(" Ring data dump: cur_tx %p%s cur_rx %p.\n",
+		       cep->cur_tx, cep->tx_full ? " (full)" : "",
+		       cep->cur_rx);
+		bdp = cep->tx_bd_base;
+		for (i = 0 ; i < TX_RING_SIZE; i++, bdp++)
+			printk("%04x %04x %08x\n",
+			       bdp->cbd_sc,
+			       bdp->cbd_datlen,
+			       bdp->cbd_bufaddr);
+		bdp = cep->rx_bd_base;
+		for (i = 0 ; i < RX_RING_SIZE; i++, bdp++)
+			printk("%04x %04x %08x\n",
+			       bdp->cbd_sc,
+			       bdp->cbd_datlen,
+			       bdp->cbd_bufaddr);
+	}
+#endif
+	if (!cep->tx_full)
+		netif_wake_queue(dev);
+}
+
+/* The interrupt handler.
+ * This is called from the CPM handler, not the MPC core interrupt.
+ */
+static void
+scc_enet_interrupt(void *dev_id, struct pt_regs *regs)
+{
+	struct	net_device *dev = dev_id;
+	volatile struct	scc_enet_private *cep;
+	volatile cbd_t	*bdp;
+	ushort	int_events;
+	int	must_restart;
+
+	cep = (struct scc_enet_private *)dev->priv;
+
+	/* Get the interrupt events that caused us to be here.
+	*/
+	int_events = cep->sccp->scc_scce;
+	cep->sccp->scc_scce = int_events;
+	must_restart = 0;
+
+	/* Handle receive event in its own function.
+	*/
+	if (int_events & SCCE_ENET_RXF)
+		scc_enet_rx(dev_id);
+
+	/* Check for a transmit error.  The manual is a little unclear
+	 * about this, so the debug code until I get it figured out.  It
+	 * appears that if TXE is set, then TXB is not set.  However,
+	 * if carrier sense is lost during frame transmission, the TXE
+	 * bit is set, "and continues the buffer transmission normally."
+	 * I don't know if "normally" implies TXB is set when the buffer
+	 * descriptor is closed.....trial and error :-).
+	 */
+
+	/* Transmit OK, or non-fatal error.  Update the buffer descriptors.
+	*/
+	if (int_events & (SCCE_ENET_TXE | SCCE_ENET_TXB)) {
+	    spin_lock(&cep->lock);
+	    bdp = cep->dirty_tx;
+	    while ((bdp->cbd_sc&BD_ENET_TX_READY)==0) {
+		if ((bdp==cep->cur_tx) && (cep->tx_full == 0))
+		    break;
+
+		if (bdp->cbd_sc & BD_ENET_TX_HB)	/* No heartbeat */
+			cep->stats.tx_heartbeat_errors++;
+		if (bdp->cbd_sc & BD_ENET_TX_LC)	/* Late collision */
+			cep->stats.tx_window_errors++;
+		if (bdp->cbd_sc & BD_ENET_TX_RL)	/* Retrans limit */
+			cep->stats.tx_aborted_errors++;
+		if (bdp->cbd_sc & BD_ENET_TX_UN)	/* Underrun */
+			cep->stats.tx_fifo_errors++;
+		if (bdp->cbd_sc & BD_ENET_TX_CSL)	/* Carrier lost */
+			cep->stats.tx_carrier_errors++;
+
+
+		/* No heartbeat or Lost carrier are not really bad errors.
+		 * The others require a restart transmit command.
+		 */
+		if (bdp->cbd_sc &
+		    (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) {
+			must_restart = 1;
+			cep->stats.tx_errors++;
+		}
+
+		cep->stats.tx_packets++;
+
+		/* Deferred means some collisions occurred during transmit,
+		 * but we eventually sent the packet OK.
+		 */
+		if (bdp->cbd_sc & BD_ENET_TX_DEF)
+			cep->stats.collisions++;
+
+		/* Free the sk buffer associated with this last transmit.
+		*/
+		dev_kfree_skb_irq(cep->tx_skbuff[cep->skb_dirty]);
+		cep->skb_dirty = (cep->skb_dirty + 1) & TX_RING_MOD_MASK;
+
+		/* Update pointer to next buffer descriptor to be transmitted.
+		*/
+		if (bdp->cbd_sc & BD_ENET_TX_WRAP)
+			bdp = cep->tx_bd_base;
+		else
+			bdp++;
+
+		/* I don't know if we can be held off from processing these
+		 * interrupts for more than one frame time.  I really hope
+		 * not.  In such a case, we would now want to check the
+		 * currently available BD (cur_tx) and determine if any
+		 * buffers between the dirty_tx and cur_tx have also been
+		 * sent.  We would want to process anything in between that
+		 * does not have BD_ENET_TX_READY set.
+		 */
+
+		/* Since we have freed up a buffer, the ring is no longer
+		 * full.
+		 */
+		if (cep->tx_full) {
+			cep->tx_full = 0;
+			if (netif_queue_stopped(dev))
+				netif_wake_queue(dev);
+		}
+
+		cep->dirty_tx = (cbd_t *)bdp;
+	    }
+
+	    if (must_restart) {
+		volatile cpm8xx_t *cp;
+
+		/* Some transmit errors cause the transmitter to shut
+		 * down.  We now issue a restart transmit.  Since the
+		 * errors close the BD and update the pointers, the restart
+		 * _should_ pick up without having to reset any of our
+		 * pointers either.
+		 */
+		cp = cpmp;
+		cp->cp_cpcr =
+		    mk_cr_cmd(CPM_CR_ENET, CPM_CR_RESTART_TX) | CPM_CR_FLG;
+		while (cp->cp_cpcr & CPM_CR_FLG);
+	    }
+	    spin_unlock(&cep->lock);
+	}
+
+	/* Check for receive busy, i.e. packets coming but no place to
+	 * put them.  This "can't happen" because the receive interrupt
+	 * is tossing previous frames.
+	 */
+	if (int_events & SCCE_ENET_BSY) {
+		cep->stats.rx_dropped++;
+		printk("CPM ENET: BSY can't happen.\n");
+	}
+
+	return;
+}
+
+/* During a receive, the cur_rx points to the current incoming buffer.
+ * When we update through the ring, if the next incoming buffer has
+ * not been given to the system, we just set the empty indicator,
+ * effectively tossing the packet.
+ */
+static int
+scc_enet_rx(struct net_device *dev)
+{
+	struct	scc_enet_private *cep;
+	volatile cbd_t	*bdp;
+	struct	sk_buff *skb;
+	ushort	pkt_len;
+
+	cep = (struct scc_enet_private *)dev->priv;
+
+	/* First, grab all of the stats for the incoming packet.
+	 * These get messed up if we get called due to a busy condition.
+	 */
+	bdp = cep->cur_rx;
+
+for (;;) {
+	if (bdp->cbd_sc & BD_ENET_RX_EMPTY)
+		break;
+
+#ifndef final_version
+	/* Since we have allocated space to hold a complete frame, both
+	 * the first and last indicators should be set.
+	 */
+	if ((bdp->cbd_sc & (BD_ENET_RX_FIRST | BD_ENET_RX_LAST)) !=
+		(BD_ENET_RX_FIRST | BD_ENET_RX_LAST))
+			printk("CPM ENET: rcv is not first+last\n");
+#endif
+
+	/* Frame too long or too short.
+	*/
+	if (bdp->cbd_sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
+		cep->stats.rx_length_errors++;
+	if (bdp->cbd_sc & BD_ENET_RX_NO)	/* Frame alignment */
+		cep->stats.rx_frame_errors++;
+	if (bdp->cbd_sc & BD_ENET_RX_CR)	/* CRC Error */
+		cep->stats.rx_crc_errors++;
+	if (bdp->cbd_sc & BD_ENET_RX_OV)	/* FIFO overrun */
+		cep->stats.rx_crc_errors++;
+
+	/* Report late collisions as a frame error.
+	 * On this error, the BD is closed, but we don't know what we
+	 * have in the buffer.  So, just drop this frame on the floor.
+	 */
+	if (bdp->cbd_sc & BD_ENET_RX_CL) {
+		cep->stats.rx_frame_errors++;
+	}
+	else {
+
+		/* Process the incoming frame.
+		*/
+		cep->stats.rx_packets++;
+		pkt_len = bdp->cbd_datlen;
+		cep->stats.rx_bytes += pkt_len;
+
+		/* This does 16 byte alignment, much more than we need.
+		 * The packet length includes FCS, but we don't want to
+		 * include that when passing upstream as it messes up
+		 * bridging applications.
+		 */
+		skb = dev_alloc_skb(pkt_len-4);
+
+		if (skb == NULL) {
+			printk("%s: Memory squeeze, dropping packet.\n", dev->name);
+			cep->stats.rx_dropped++;
+		}
+		else {
+			skb->dev = dev;
+			skb_put(skb,pkt_len-4);	/* Make room */
+			eth_copy_and_sum(skb,
+				cep->rx_vaddr[bdp - cep->rx_bd_base],
+				pkt_len-4, 0);
+			skb->protocol=eth_type_trans(skb,dev);
+			netif_rx(skb);
+		}
+	}
+
+	/* Clear the status flags for this buffer.
+	*/
+	bdp->cbd_sc &= ~BD_ENET_RX_STATS;
+
+	/* Mark the buffer empty.
+	*/
+	bdp->cbd_sc |= BD_ENET_RX_EMPTY;
+
+	/* Update BD pointer to next entry.
+	*/
+	if (bdp->cbd_sc & BD_ENET_RX_WRAP)
+		bdp = cep->rx_bd_base;
+	else
+		bdp++;
+
+   }
+	cep->cur_rx = (cbd_t *)bdp;
+
+	return 0;
+}
+
+static int
+scc_enet_close(struct net_device *dev)
+{
+	/* Don't know what to do yet.
+	*/
+	netif_stop_queue(dev);
+
+	return 0;
+}
+
+static struct net_device_stats *scc_enet_get_stats(struct net_device *dev)
+{
+	struct scc_enet_private *cep = (struct scc_enet_private *)dev->priv;
+
+	return &cep->stats;
+}
+
+/* Set or clear the multicast filter for this adaptor.
+ * Skeleton taken from sunlance driver.
+ * The CPM Ethernet implementation allows Multicast as well as individual
+ * MAC address filtering.  Some of the drivers check to make sure it is
+ * a group multicast address, and discard those that are not.  I guess I
+ * will do the same for now, but just remove the test if you want
+ * individual filtering as well (do the upper net layers want or support
+ * this kind of feature?).
+ */
+
+static void set_multicast_list(struct net_device *dev)
+{
+	struct	scc_enet_private *cep;
+	struct	dev_mc_list *dmi;
+	u_char	*mcptr, *tdptr;
+	volatile scc_enet_t *ep;
+	int	i, j;
+	cep = (struct scc_enet_private *)dev->priv;
+
+	/* Get pointer to SCC area in parameter RAM.
+	*/
+	ep = (scc_enet_t *)dev->base_addr;
+
+	if (dev->flags&IFF_PROMISC) {
+	
+		/* Log any net taps. */
+		printk("%s: Promiscuous mode enabled.\n", dev->name);
+		cep->sccp->scc_psmr |= SCC_PSMR_PRO;
+	} else {
+
+		cep->sccp->scc_psmr &= ~SCC_PSMR_PRO;
+
+		if (dev->flags & IFF_ALLMULTI) {
+			/* Catch all multicast addresses, so set the
+			 * filter to all 1's.
+			 */
+			ep->sen_gaddr1 = 0xffff;
+			ep->sen_gaddr2 = 0xffff;
+			ep->sen_gaddr3 = 0xffff;
+			ep->sen_gaddr4 = 0xffff;
+		}
+		else {
+			/* Clear filter and add the addresses in the list.
+			*/
+			ep->sen_gaddr1 = 0;
+			ep->sen_gaddr2 = 0;
+			ep->sen_gaddr3 = 0;
+			ep->sen_gaddr4 = 0;
+
+			dmi = dev->mc_list;
+
+			for (i=0; i<dev->mc_count; i++) {
+		
+				/* Only support group multicast for now.
+				*/
+				if (!(dmi->dmi_addr[0] & 1))
+					continue;
+
+				/* The address in dmi_addr is LSB first,
+				 * and taddr is MSB first.  We have to
+				 * copy bytes MSB first from dmi_addr.
+				 */
+				mcptr = (u_char *)dmi->dmi_addr + 5;
+				tdptr = (u_char *)&ep->sen_taddrh;
+				for (j=0; j<6; j++)
+					*tdptr++ = *mcptr--;
+
+				/* Ask CPM to run CRC and set bit in
+				 * filter mask.
+				 */
+				cpmp->cp_cpcr = mk_cr_cmd(CPM_CR_ENET, CPM_CR_SET_GADDR) | CPM_CR_FLG;
+				/* this delay is necessary here -- Cort */
+				udelay(10);
+				while (cpmp->cp_cpcr & CPM_CR_FLG);
+			}
+		}
+	}
+}
+
+/* Initialize the CPM Ethernet on SCC.  If EPPC-Bug loaded us, or performed
+ * some other network I/O, a whole bunch of this has already been set up.
+ * It is no big deal if we do it again, we just have to disable the
+ * transmit and receive to make sure we don't catch the CPM with some
+ * inconsistent control information.
+ */
+static int __init scc_enet_init(void)
+{
+	struct net_device *dev;
+	struct scc_enet_private *cep;
+	int i, j, k, err;
+	uint dp_offset;
+	unsigned char	*eap, *ba;
+	dma_addr_t	mem_addr;
+	bd_t		*bd;
+	volatile	cbd_t		*bdp;
+	volatile	cpm8xx_t	*cp;
+	volatile	scc_t		*sccp;
+	volatile	scc_enet_t	*ep;
+	volatile	immap_t		*immap;
+
+	cp = cpmp;	/* Get pointer to Communication Processor */
+
+	immap = (immap_t *)(mfspr(SPRN_IMMR) & 0xFFFF0000);	/* and to internal registers */
+
+	bd = (bd_t *)__res;
+
+	dev = alloc_etherdev(sizeof(*cep));
+	if (!dev)
+		return -ENOMEM;
+
+	cep = dev->priv;
+	spin_lock_init(&cep->lock);
+
+	/* Get pointer to SCC area in parameter RAM.
+	*/
+	ep = (scc_enet_t *)(&cp->cp_dparam[PROFF_ENET]);
+
+	/* And another to the SCC register area.
+	*/
+	sccp = (volatile scc_t *)(&cp->cp_scc[SCC_ENET]);
+	cep->sccp = (scc_t *)sccp;		/* Keep the pointer handy */
+
+	/* Disable receive and transmit in case EPPC-Bug started it.
+	*/
+	sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+
+	/* Cookbook style from the MPC860 manual.....
+	 * Not all of this is necessary if EPPC-Bug has initialized
+	 * the network.
+	 * So far we are lucky, all board configurations use the same
+	 * pins, or at least the same I/O Port for these functions.....
+	 * It can't last though......
+	 */
+
+#if (defined(PA_ENET_RXD) && defined(PA_ENET_TXD))
+	/* Configure port A pins for Txd and Rxd.
+	*/
+	immap->im_ioport.iop_papar |=  (PA_ENET_RXD | PA_ENET_TXD);
+	immap->im_ioport.iop_padir &= ~(PA_ENET_RXD | PA_ENET_TXD);
+	immap->im_ioport.iop_paodr &=                ~PA_ENET_TXD;
+#elif (defined(PB_ENET_RXD) && defined(PB_ENET_TXD))
+	/* Configure port B pins for Txd and Rxd.
+	*/
+	immap->im_cpm.cp_pbpar |=  (PB_ENET_RXD | PB_ENET_TXD);
+	immap->im_cpm.cp_pbdir &= ~(PB_ENET_RXD | PB_ENET_TXD);
+	immap->im_cpm.cp_pbodr &=		 ~PB_ENET_TXD;
+#else
+#error Exactly ONE pair of PA_ENET_[RT]XD, PB_ENET_[RT]XD must be defined
+#endif
+
+#if defined(PC_ENET_LBK)
+	/* Configure port C pins to disable External Loopback
+	 */
+	immap->im_ioport.iop_pcpar &= ~PC_ENET_LBK;
+	immap->im_ioport.iop_pcdir |=  PC_ENET_LBK;
+	immap->im_ioport.iop_pcso  &= ~PC_ENET_LBK;
+	immap->im_ioport.iop_pcdat &= ~PC_ENET_LBK;	/* Disable Loopback */
+#endif	/* PC_ENET_LBK */
+
+	/* Configure port C pins to enable CLSN and RENA.
+	*/
+	immap->im_ioport.iop_pcpar &= ~(PC_ENET_CLSN | PC_ENET_RENA);
+	immap->im_ioport.iop_pcdir &= ~(PC_ENET_CLSN | PC_ENET_RENA);
+	immap->im_ioport.iop_pcso  |=  (PC_ENET_CLSN | PC_ENET_RENA);
+
+	/* Configure port A for TCLK and RCLK.
+	*/
+	immap->im_ioport.iop_papar |=  (PA_ENET_TCLK | PA_ENET_RCLK);
+	immap->im_ioport.iop_padir &= ~(PA_ENET_TCLK | PA_ENET_RCLK);
+
+	/* Configure Serial Interface clock routing.
+	 * First, clear all SCC bits to zero, then set the ones we want.
+	 */
+	cp->cp_sicr &= ~SICR_ENET_MASK;
+	cp->cp_sicr |=  SICR_ENET_CLKRT;
+
+	/* Manual says set SDDR, but I can't find anything with that
+	 * name.  I think it is a misprint, and should be SDCR.  This
+	 * has already been set by the communication processor initialization.
+	 */
+
+	/* Allocate space for the buffer descriptors in the DP ram.
+	 * These are relative offsets in the DP ram address space.
+	 * Initialize base addresses for the buffer descriptors.
+	 */
+	dp_offset = cpm_dpalloc(sizeof(cbd_t) * RX_RING_SIZE, 8);
+	ep->sen_genscc.scc_rbase = dp_offset;
+	cep->rx_bd_base = cpm_dpram_addr(dp_offset);
+
+	dp_offset = cpm_dpalloc(sizeof(cbd_t) * TX_RING_SIZE, 8);
+	ep->sen_genscc.scc_tbase = dp_offset;
+	cep->tx_bd_base = cpm_dpram_addr(dp_offset);
+
+	cep->dirty_tx = cep->cur_tx = cep->tx_bd_base;
+	cep->cur_rx = cep->rx_bd_base;
+
+	/* Issue init Rx BD command for SCC.
+	 * Manual says to perform an Init Rx parameters here.  We have
+	 * to perform both Rx and Tx because the SCC may have been
+	 * already running.
+	 * In addition, we have to do it later because we don't yet have
+	 * all of the BD control/status set properly.
+	cp->cp_cpcr = mk_cr_cmd(CPM_CR_ENET, CPM_CR_INIT_RX) | CPM_CR_FLG;
+	while (cp->cp_cpcr & CPM_CR_FLG);
+	 */
+
+	/* Initialize function code registers for big-endian.
+	*/
+	ep->sen_genscc.scc_rfcr = SCC_EB;
+	ep->sen_genscc.scc_tfcr = SCC_EB;
+
+	/* Set maximum bytes per receive buffer.
+	 * This appears to be an Ethernet frame size, not the buffer
+	 * fragment size.  It must be a multiple of four.
+	 */
+	ep->sen_genscc.scc_mrblr = PKT_MAXBLR_SIZE;
+
+	/* Set CRC preset and mask.
+	*/
+	ep->sen_cpres = 0xffffffff;
+	ep->sen_cmask = 0xdebb20e3;
+
+	ep->sen_crcec = 0;	/* CRC Error counter */
+	ep->sen_alec = 0;	/* alignment error counter */
+	ep->sen_disfc = 0;	/* discard frame counter */
+
+	ep->sen_pads = 0x8888;	/* Tx short frame pad character */
+	ep->sen_retlim = 15;	/* Retry limit threshold */
+
+	ep->sen_maxflr = PKT_MAXBUF_SIZE;   /* maximum frame length register */
+	ep->sen_minflr = PKT_MINBUF_SIZE;  /* minimum frame length register */
+
+	ep->sen_maxd1 = PKT_MAXBLR_SIZE;	/* maximum DMA1 length */
+	ep->sen_maxd2 = PKT_MAXBLR_SIZE;	/* maximum DMA2 length */
+
+	/* Clear hash tables.
+	*/
+	ep->sen_gaddr1 = 0;
+	ep->sen_gaddr2 = 0;
+	ep->sen_gaddr3 = 0;
+	ep->sen_gaddr4 = 0;
+	ep->sen_iaddr1 = 0;
+	ep->sen_iaddr2 = 0;
+	ep->sen_iaddr3 = 0;
+	ep->sen_iaddr4 = 0;
+
+	/* Set Ethernet station address.
+	 */
+	eap = (unsigned char *)&(ep->sen_paddrh);
+	for (i=5; i>=0; i--)
+		*eap++ = dev->dev_addr[i] = bd->bi_enetaddr[i];
+
+	ep->sen_pper = 0;	/* 'cause the book says so */
+	ep->sen_taddrl = 0;	/* temp address (LSB) */
+	ep->sen_taddrm = 0;
+	ep->sen_taddrh = 0;	/* temp address (MSB) */
+
+	/* Now allocate the host memory pages and initialize the
+	 * buffer descriptors.
+	 */
+	bdp = cep->tx_bd_base;
+	for (i=0; i<TX_RING_SIZE; i++) {
+
+		/* Initialize the BD for every fragment in the page.
+		*/
+		bdp->cbd_sc = 0;
+		bdp->cbd_bufaddr = 0;
+		bdp++;
+	}
+
+	/* Set the last buffer to wrap.
+	*/
+	bdp--;
+	bdp->cbd_sc |= BD_SC_WRAP;
+
+	bdp = cep->rx_bd_base;
+	k = 0;
+	for (i=0; i<CPM_ENET_RX_PAGES; i++) {
+
+		/* Allocate a page.
+		*/
+		ba = (unsigned char *)dma_alloc_coherent(NULL, PAGE_SIZE,
+				&mem_addr, GFP_KERNEL);
+		/* BUG: no check for failure */
+
+		/* Initialize the BD for every fragment in the page.
+		*/
+		for (j=0; j<CPM_ENET_RX_FRPPG; j++) {
+			bdp->cbd_sc = BD_ENET_RX_EMPTY | BD_ENET_RX_INTR;
+			bdp->cbd_bufaddr = mem_addr;
+			cep->rx_vaddr[k++] = ba;
+			mem_addr += CPM_ENET_RX_FRSIZE;
+			ba += CPM_ENET_RX_FRSIZE;
+			bdp++;
+		}
+	}
+
+	/* Set the last buffer to wrap.
+	*/
+	bdp--;
+	bdp->cbd_sc |= BD_SC_WRAP;
+
+	/* Let's re-initialize the channel now.  We have to do it later
+	 * than the manual describes because we have just now finished
+	 * the BD initialization.
+	 */
+	cp->cp_cpcr = mk_cr_cmd(CPM_CR_ENET, CPM_CR_INIT_TRX) | CPM_CR_FLG;
+	while (cp->cp_cpcr & CPM_CR_FLG);
+
+	cep->skb_cur = cep->skb_dirty = 0;
+
+	sccp->scc_scce = 0xffff;	/* Clear any pending events */
+
+	/* Enable interrupts for transmit error, complete frame
+	 * received, and any transmit buffer we have also set the
+	 * interrupt flag.
+	 */
+	sccp->scc_sccm = (SCCE_ENET_TXE | SCCE_ENET_RXF | SCCE_ENET_TXB);
+
+	/* Install our interrupt handler.
+	*/
+	cpm_install_handler(CPMVEC_ENET, scc_enet_interrupt, dev);
+
+	/* Set GSMR_H to enable all normal operating modes.
+	 * Set GSMR_L to enable Ethernet to MC68160.
+	 */
+	sccp->scc_gsmrh = 0;
+	sccp->scc_gsmrl = (SCC_GSMRL_TCI | SCC_GSMRL_TPL_48 | SCC_GSMRL_TPP_10 | SCC_GSMRL_MODE_ENET);
+
+	/* Set sync/delimiters.
+	*/
+	sccp->scc_dsr = 0xd555;
+
+	/* Set processing mode.  Use Ethernet CRC, catch broadcast, and
+	 * start frame search 22 bit times after RENA.
+	 */
+	sccp->scc_psmr = (SCC_PSMR_ENCRC | SCC_PSMR_NIB22);
+
+	/* It is now OK to enable the Ethernet transmitter.
+	 * Unfortunately, there are board implementation differences here.
+	 */
+#if   (!defined (PB_ENET_TENA) &&  defined (PC_ENET_TENA))
+	immap->im_ioport.iop_pcpar |=  PC_ENET_TENA;
+	immap->im_ioport.iop_pcdir &= ~PC_ENET_TENA;
+#elif ( defined (PB_ENET_TENA) && !defined (PC_ENET_TENA))
+	cp->cp_pbpar |= PB_ENET_TENA;
+	cp->cp_pbdir |= PB_ENET_TENA;
+#else
+#error Configuration Error: define exactly ONE of PB_ENET_TENA, PC_ENET_TENA
+#endif
+
+#if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC)
+	/* And while we are here, set the configuration to enable ethernet.
+	*/
+	*((volatile uint *)RPX_CSR_ADDR) &= ~BCSR0_ETHLPBK;
+	*((volatile uint *)RPX_CSR_ADDR) |=
+			(BCSR0_ETHEN | BCSR0_COLTESTDIS | BCSR0_FULLDPLXDIS);
+#endif
+
+#ifdef CONFIG_BSEIP
+	/* BSE uses port B and C for PHY control.
+	*/
+	cp->cp_pbpar &= ~(PB_BSE_POWERUP | PB_BSE_FDXDIS);
+	cp->cp_pbdir |= (PB_BSE_POWERUP | PB_BSE_FDXDIS);
+	cp->cp_pbdat |= (PB_BSE_POWERUP | PB_BSE_FDXDIS);
+
+	immap->im_ioport.iop_pcpar &= ~PC_BSE_LOOPBACK;
+	immap->im_ioport.iop_pcdir |= PC_BSE_LOOPBACK;
+	immap->im_ioport.iop_pcso &= ~PC_BSE_LOOPBACK;
+	immap->im_ioport.iop_pcdat &= ~PC_BSE_LOOPBACK;
+#endif
+
+#ifdef CONFIG_FADS
+	cp->cp_pbpar |= PB_ENET_TENA;
+	cp->cp_pbdir |= PB_ENET_TENA;
+
+	/* Enable the EEST PHY.
+	*/
+	*((volatile uint *)BCSR1) &= ~BCSR1_ETHEN;
+#endif
+
+	dev->base_addr = (unsigned long)ep;
+#if 0
+	dev->name = "CPM_ENET";
+#endif
+
+	/* The CPM Ethernet specific entries in the device structure. */
+	dev->open = scc_enet_open;
+	dev->hard_start_xmit = scc_enet_start_xmit;
+	dev->tx_timeout = scc_enet_timeout;
+	dev->watchdog_timeo = TX_TIMEOUT;
+	dev->stop = scc_enet_close;
+	dev->get_stats = scc_enet_get_stats;
+	dev->set_multicast_list = set_multicast_list;
+
+	err = register_netdev(dev);
+	if (err) {
+		free_netdev(dev);
+		return err;
+	}
+
+	/* And last, enable the transmit and receive processing.
+	*/
+	sccp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+
+	printk("%s: CPM ENET Version 0.2 on SCC%d, ", dev->name, SCC_ENET+1);
+	for (i=0; i<5; i++)
+		printk("%02x:", dev->dev_addr[i]);
+	printk("%02x\n", dev->dev_addr[5]);
+
+	return 0;
+}
+
+module_init(scc_enet_init);
diff --git a/arch/ppc/8xx_io/fec.c b/arch/ppc/8xx_io/fec.c
new file mode 100644
index 0000000..0730392
--- /dev/null
+++ b/arch/ppc/8xx_io/fec.c
@@ -0,0 +1,1973 @@
+/*
+ * Fast Ethernet Controller (FEC) driver for Motorola MPC8xx.
+ * Copyright (c) 1997 Dan Malek (dmalek@jlc.net)
+ *
+ * This version of the driver is specific to the FADS implementation,
+ * since the board contains control registers external to the processor
+ * for the control of the LevelOne LXT970 transceiver.  The MPC860T manual
+ * describes connections using the internal parallel port I/O, which
+ * is basically all of Port D.
+ *
+ * Includes support for the following PHYs: QS6612, LXT970, LXT971/2.
+ *
+ * Right now, I am very wasteful with the buffers.  I allocate memory
+ * pages and then divide them into 2K frame buffers.  This way I know I
+ * have buffers large enough to hold one frame within one buffer descriptor.
+ * Once I get this working, I will use 64 or 128 byte CPM buffers, which
+ * will be much more memory efficient and will easily handle lots of
+ * small packets.
+ *
+ * Much better multiple PHY support by Magnus Damm.
+ * Copyright (c) 2000 Ericsson Radio Systems AB.
+ *
+ * Make use of MII for PHY control configurable.
+ * Some fixes.
+ * Copyright (c) 2000-2002 Wolfgang Denk, DENX Software Engineering.
+ *
+ * Support for AMD AM79C874 added.
+ * Thomas Lange, thomas@corelatus.com
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/ptrace.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/bitops.h>
+#ifdef CONFIG_FEC_PACKETHOOK
+#include <linux/pkthook.h>
+#endif
+
+#include <asm/8xx_immap.h>
+#include <asm/pgtable.h>
+#include <asm/mpc8xx.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/commproc.h>
+
+#ifdef	CONFIG_USE_MDIO
+/* Forward declarations of some structures to support different PHYs
+*/
+
+typedef struct {
+	uint mii_data;
+	void (*funct)(uint mii_reg, struct net_device *dev);
+} phy_cmd_t;
+
+typedef struct {
+	uint id;
+	char *name;
+
+	const phy_cmd_t *config;
+	const phy_cmd_t *startup;
+	const phy_cmd_t *ack_int;
+	const phy_cmd_t *shutdown;
+} phy_info_t;
+#endif	/* CONFIG_USE_MDIO */
+
+/* The number of Tx and Rx buffers.  These are allocated from the page
+ * pool.  The code may assume these are power of two, so it is best
+ * to keep them that size.
+ * We don't need to allocate pages for the transmitter.  We just use
+ * the skbuffer directly.
+ */
+#ifdef CONFIG_ENET_BIG_BUFFERS
+#define FEC_ENET_RX_PAGES	16
+#define FEC_ENET_RX_FRSIZE	2048
+#define FEC_ENET_RX_FRPPG	(PAGE_SIZE / FEC_ENET_RX_FRSIZE)
+#define RX_RING_SIZE		(FEC_ENET_RX_FRPPG * FEC_ENET_RX_PAGES)
+#define TX_RING_SIZE		16	/* Must be power of two */
+#define TX_RING_MOD_MASK	15	/*   for this to work */
+#else
+#define FEC_ENET_RX_PAGES	4
+#define FEC_ENET_RX_FRSIZE	2048
+#define FEC_ENET_RX_FRPPG	(PAGE_SIZE / FEC_ENET_RX_FRSIZE)
+#define RX_RING_SIZE		(FEC_ENET_RX_FRPPG * FEC_ENET_RX_PAGES)
+#define TX_RING_SIZE		8	/* Must be power of two */
+#define TX_RING_MOD_MASK	7	/*   for this to work */
+#endif
+
+/* Interrupt events/masks.
+*/
+#define FEC_ENET_HBERR	((uint)0x80000000)	/* Heartbeat error */
+#define FEC_ENET_BABR	((uint)0x40000000)	/* Babbling receiver */
+#define FEC_ENET_BABT	((uint)0x20000000)	/* Babbling transmitter */
+#define FEC_ENET_GRA	((uint)0x10000000)	/* Graceful stop complete */
+#define FEC_ENET_TXF	((uint)0x08000000)	/* Full frame transmitted */
+#define FEC_ENET_TXB	((uint)0x04000000)	/* A buffer was transmitted */
+#define FEC_ENET_RXF	((uint)0x02000000)	/* Full frame received */
+#define FEC_ENET_RXB	((uint)0x01000000)	/* A buffer was received */
+#define FEC_ENET_MII	((uint)0x00800000)	/* MII interrupt */
+#define FEC_ENET_EBERR	((uint)0x00400000)	/* SDMA bus error */
+
+/*
+*/
+#define FEC_ECNTRL_PINMUX	0x00000004
+#define FEC_ECNTRL_ETHER_EN	0x00000002
+#define FEC_ECNTRL_RESET	0x00000001
+
+#define FEC_RCNTRL_BC_REJ	0x00000010
+#define FEC_RCNTRL_PROM		0x00000008
+#define FEC_RCNTRL_MII_MODE	0x00000004
+#define FEC_RCNTRL_DRT		0x00000002
+#define FEC_RCNTRL_LOOP		0x00000001
+
+#define FEC_TCNTRL_FDEN		0x00000004
+#define FEC_TCNTRL_HBC		0x00000002
+#define FEC_TCNTRL_GTS		0x00000001
+
+/* Delay to wait for FEC reset command to complete (in us)
+*/
+#define FEC_RESET_DELAY		50
+
+/* The FEC stores dest/src/type, data, and checksum for receive packets.
+ */
+#define PKT_MAXBUF_SIZE		1518
+#define PKT_MINBUF_SIZE		64
+#define PKT_MAXBLR_SIZE		1520
+
+/* The FEC buffer descriptors track the ring buffers.  The rx_bd_base and
+ * tx_bd_base always point to the base of the buffer descriptors.  The
+ * cur_rx and cur_tx point to the currently available buffer.
+ * The dirty_tx tracks the current buffer that is being sent by the
+ * controller.  The cur_tx and dirty_tx are equal under both completely
+ * empty and completely full conditions.  The empty/ready indicator in
+ * the buffer descriptor determines the actual condition.
+ */
+struct fec_enet_private {
+	/* The saved address of a sent-in-place packet/buffer, for skfree(). */
+	struct	sk_buff* tx_skbuff[TX_RING_SIZE];
+	ushort	skb_cur;
+	ushort	skb_dirty;
+
+	/* CPM dual port RAM relative addresses.
+	*/
+	cbd_t	*rx_bd_base;		/* Address of Rx and Tx buffers. */
+	cbd_t	*tx_bd_base;
+	cbd_t	*cur_rx, *cur_tx;		/* The next free ring entry */
+	cbd_t	*dirty_tx;	/* The ring entries to be free()ed. */
+
+	/* Virtual addresses for the receive buffers because we can't
+	 * do a __va() on them anymore.
+	 */
+	unsigned char *rx_vaddr[RX_RING_SIZE];
+
+	struct	net_device_stats stats;
+	uint	tx_full;
+	spinlock_t lock;
+
+#ifdef	CONFIG_USE_MDIO
+	uint	phy_id;
+	uint	phy_id_done;
+	uint	phy_status;
+	uint	phy_speed;
+	phy_info_t	*phy;
+	struct tq_struct phy_task;
+
+	uint	sequence_done;
+
+	uint	phy_addr;
+#endif	/* CONFIG_USE_MDIO */
+
+	int	link;
+	int	old_link;
+	int	full_duplex;
+
+#ifdef CONFIG_FEC_PACKETHOOK
+	unsigned long	ph_lock;
+	fec_ph_func	*ph_rxhandler;
+	fec_ph_func	*ph_txhandler;
+	__u16		ph_proto;
+	volatile __u32	*ph_regaddr;
+	void 		*ph_priv;
+#endif
+};
+
+static int fec_enet_open(struct net_device *dev);
+static int fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev);
+#ifdef	CONFIG_USE_MDIO
+static void fec_enet_mii(struct net_device *dev);
+#endif	/* CONFIG_USE_MDIO */
+static void fec_enet_interrupt(int irq, void * dev_id, struct pt_regs * regs);
+#ifdef CONFIG_FEC_PACKETHOOK
+static void  fec_enet_tx(struct net_device *dev, __u32 regval);
+static void  fec_enet_rx(struct net_device *dev, __u32 regval);
+#else
+static void  fec_enet_tx(struct net_device *dev);
+static void  fec_enet_rx(struct net_device *dev);
+#endif
+static int fec_enet_close(struct net_device *dev);
+static struct net_device_stats *fec_enet_get_stats(struct net_device *dev);
+static void set_multicast_list(struct net_device *dev);
+static void fec_restart(struct net_device *dev, int duplex);
+static void fec_stop(struct net_device *dev);
+static	ushort	my_enet_addr[3];
+
+#ifdef	CONFIG_USE_MDIO
+/* MII processing.  We keep this as simple as possible.  Requests are
+ * placed on the list (if there is room).  When the request is finished
+ * by the MII, an optional function may be called.
+ */
+typedef struct mii_list {
+	uint	mii_regval;
+	void	(*mii_func)(uint val, struct net_device *dev);
+	struct	mii_list *mii_next;
+} mii_list_t;
+
+#define		NMII	20
+mii_list_t	mii_cmds[NMII];
+mii_list_t	*mii_free;
+mii_list_t	*mii_head;
+mii_list_t	*mii_tail;
+
+static int	mii_queue(struct net_device *dev, int request,
+				void (*func)(uint, struct net_device *));
+
+/* Make MII read/write commands for the FEC.
+*/
+#define mk_mii_read(REG)	(0x60020000 | ((REG & 0x1f) << 18))
+#define mk_mii_write(REG, VAL)	(0x50020000 | ((REG & 0x1f) << 18) | \
+						(VAL & 0xffff))
+#define mk_mii_end	0
+#endif	/* CONFIG_USE_MDIO */
+
+/* Transmitter timeout.
+*/
+#define TX_TIMEOUT (2*HZ)
+
+#ifdef	CONFIG_USE_MDIO
+/* Register definitions for the PHY.
+*/
+
+#define MII_REG_CR          0  /* Control Register                         */
+#define MII_REG_SR          1  /* Status Register                          */
+#define MII_REG_PHYIR1      2  /* PHY Identification Register 1            */
+#define MII_REG_PHYIR2      3  /* PHY Identification Register 2            */
+#define MII_REG_ANAR        4  /* A-N Advertisement Register               */
+#define MII_REG_ANLPAR      5  /* A-N Link Partner Ability Register        */
+#define MII_REG_ANER        6  /* A-N Expansion Register                   */
+#define MII_REG_ANNPTR      7  /* A-N Next Page Transmit Register          */
+#define MII_REG_ANLPRNPR    8  /* A-N Link Partner Received Next Page Reg. */
+
+/* values for phy_status */
+
+#define PHY_CONF_ANE	0x0001  /* 1 auto-negotiation enabled */
+#define PHY_CONF_LOOP	0x0002  /* 1 loopback mode enabled */
+#define PHY_CONF_SPMASK	0x00f0  /* mask for speed */
+#define PHY_CONF_10HDX	0x0010  /* 10 Mbit half duplex supported */
+#define PHY_CONF_10FDX	0x0020  /* 10 Mbit full duplex supported */
+#define PHY_CONF_100HDX	0x0040  /* 100 Mbit half duplex supported */
+#define PHY_CONF_100FDX	0x0080  /* 100 Mbit full duplex supported */
+
+#define PHY_STAT_LINK	0x0100  /* 1 up - 0 down */
+#define PHY_STAT_FAULT	0x0200  /* 1 remote fault */
+#define PHY_STAT_ANC	0x0400  /* 1 auto-negotiation complete	*/
+#define PHY_STAT_SPMASK	0xf000  /* mask for speed */
+#define PHY_STAT_10HDX	0x1000  /* 10 Mbit half duplex selected	*/
+#define PHY_STAT_10FDX	0x2000  /* 10 Mbit full duplex selected	*/
+#define PHY_STAT_100HDX	0x4000  /* 100 Mbit half duplex selected */
+#define PHY_STAT_100FDX	0x8000  /* 100 Mbit full duplex selected */
+#endif	/* CONFIG_USE_MDIO */
+
+#ifdef CONFIG_FEC_PACKETHOOK
+int
+fec_register_ph(struct net_device *dev, fec_ph_func *rxfun, fec_ph_func *txfun,
+		__u16 proto, volatile __u32 *regaddr, void *priv)
+{
+	struct fec_enet_private *fep;
+	int retval = 0;
+
+	fep = dev->priv;
+
+	if (test_and_set_bit(0, (void*)&fep->ph_lock) != 0) {
+		/* Someone is messing with the packet hook */
+		return -EAGAIN;
+	}
+	if (fep->ph_rxhandler != NULL || fep->ph_txhandler != NULL) {
+		retval = -EBUSY;
+		goto out;
+	}
+	fep->ph_rxhandler = rxfun;
+	fep->ph_txhandler = txfun;
+	fep->ph_proto = proto;
+	fep->ph_regaddr = regaddr;
+	fep->ph_priv = priv;
+
+	out:
+	fep->ph_lock = 0;
+
+	return retval;
+}
+
+
+int
+fec_unregister_ph(struct net_device *dev)
+{
+	struct fec_enet_private *fep;
+	int retval = 0;
+
+	fep = dev->priv;
+
+	if (test_and_set_bit(0, (void*)&fep->ph_lock) != 0) {
+		/* Someone is messing with the packet hook */
+		return -EAGAIN;
+	}
+
+	fep->ph_rxhandler = fep->ph_txhandler = NULL;
+	fep->ph_proto = 0;
+	fep->ph_regaddr = NULL;
+	fep->ph_priv = NULL;
+
+	fep->ph_lock = 0;
+
+	return retval;
+}
+
+EXPORT_SYMBOL(fec_register_ph);
+EXPORT_SYMBOL(fec_unregister_ph);
+
+#endif /* CONFIG_FEC_PACKETHOOK */
+
+static int
+fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct fec_enet_private *fep;
+	volatile fec_t	*fecp;
+	volatile cbd_t	*bdp;
+
+	fep = dev->priv;
+	fecp = (volatile fec_t*)dev->base_addr;
+
+	if (!fep->link) {
+		/* Link is down or autonegotiation is in progress. */
+		return 1;
+	}
+
+	/* Fill in a Tx ring entry */
+	bdp = fep->cur_tx;
+
+#ifndef final_version
+	if (bdp->cbd_sc & BD_ENET_TX_READY) {
+		/* Ooops.  All transmit buffers are full.  Bail out.
+		 * This should not happen, since dev->tbusy should be set.
+		 */
+		printk("%s: tx queue full!.\n", dev->name);
+		return 1;
+	}
+#endif
+
+	/* Clear all of the status flags.
+	 */
+	bdp->cbd_sc &= ~BD_ENET_TX_STATS;
+
+	/* Set buffer length and buffer pointer.
+	*/
+	bdp->cbd_bufaddr = __pa(skb->data);
+	bdp->cbd_datlen = skb->len;
+
+	/* Save skb pointer.
+	*/
+	fep->tx_skbuff[fep->skb_cur] = skb;
+
+	fep->stats.tx_bytes += skb->len;
+	fep->skb_cur = (fep->skb_cur+1) & TX_RING_MOD_MASK;
+
+	/* Push the data cache so the CPM does not get stale memory
+	 * data.
+	 */
+	flush_dcache_range((unsigned long)skb->data,
+			   (unsigned long)skb->data + skb->len);
+
+	/* disable interrupts while triggering transmit */
+	spin_lock_irq(&fep->lock);
+
+	/* Send it on its way.  Tell FEC its ready, interrupt when done,
+	 * its the last BD of the frame, and to put the CRC on the end.
+	 */
+
+	bdp->cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_INTR
+			| BD_ENET_TX_LAST | BD_ENET_TX_TC);
+
+	dev->trans_start = jiffies;
+
+	/* Trigger transmission start */
+	fecp->fec_x_des_active = 0x01000000;
+
+	/* If this was the last BD in the ring, start at the beginning again.
+	*/
+	if (bdp->cbd_sc & BD_ENET_TX_WRAP) {
+		bdp = fep->tx_bd_base;
+	} else {
+		bdp++;
+	}
+
+	if (bdp->cbd_sc & BD_ENET_TX_READY) {
+		netif_stop_queue(dev);
+		fep->tx_full = 1;
+	}
+
+	fep->cur_tx = (cbd_t *)bdp;
+
+	spin_unlock_irq(&fep->lock);
+
+	return 0;
+}
+
+static void
+fec_timeout(struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+
+	printk("%s: transmit timed out.\n", dev->name);
+	fep->stats.tx_errors++;
+#ifndef final_version
+	{
+	int	i;
+	cbd_t	*bdp;
+
+	printk("Ring data dump: cur_tx %lx%s, dirty_tx %lx cur_rx: %lx\n",
+	       (unsigned long)fep->cur_tx, fep->tx_full ? " (full)" : "",
+	       (unsigned long)fep->dirty_tx,
+	       (unsigned long)fep->cur_rx);
+
+	bdp = fep->tx_bd_base;
+	printk(" tx: %u buffers\n",  TX_RING_SIZE);
+	for (i = 0 ; i < TX_RING_SIZE; i++) {
+		printk("  %08x: %04x %04x %08x\n",
+		       (uint) bdp,
+		       bdp->cbd_sc,
+		       bdp->cbd_datlen,
+		       bdp->cbd_bufaddr);
+		bdp++;
+	}
+
+	bdp = fep->rx_bd_base;
+	printk(" rx: %lu buffers\n",  RX_RING_SIZE);
+	for (i = 0 ; i < RX_RING_SIZE; i++) {
+		printk("  %08x: %04x %04x %08x\n",
+		       (uint) bdp,
+		       bdp->cbd_sc,
+		       bdp->cbd_datlen,
+		       bdp->cbd_bufaddr);
+		bdp++;
+	}
+	}
+#endif
+	if (!fep->tx_full)
+		netif_wake_queue(dev);
+}
+
+/* The interrupt handler.
+ * This is called from the MPC core interrupt.
+ */
+static	void
+fec_enet_interrupt(int irq, void * dev_id, struct pt_regs * regs)
+{
+	struct	net_device *dev = dev_id;
+	volatile fec_t	*fecp;
+	uint	int_events;
+#ifdef CONFIG_FEC_PACKETHOOK
+	struct	fec_enet_private *fep = dev->priv;
+	__u32 regval;
+
+	if (fep->ph_regaddr) regval = *fep->ph_regaddr;
+#endif
+	fecp = (volatile fec_t*)dev->base_addr;
+
+	/* Get the interrupt events that caused us to be here.
+	*/
+	while ((int_events = fecp->fec_ievent) != 0) {
+		fecp->fec_ievent = int_events;
+		if ((int_events & (FEC_ENET_HBERR | FEC_ENET_BABR |
+				   FEC_ENET_BABT | FEC_ENET_EBERR)) != 0) {
+			printk("FEC ERROR %x\n", int_events);
+		}
+
+		/* Handle receive event in its own function.
+		 */
+		if (int_events & FEC_ENET_RXF) {
+#ifdef CONFIG_FEC_PACKETHOOK
+			fec_enet_rx(dev, regval);
+#else
+			fec_enet_rx(dev);
+#endif
+		}
+
+		/* Transmit OK, or non-fatal error. Update the buffer
+		   descriptors. FEC handles all errors, we just discover
+		   them as part of the transmit process.
+		*/
+		if (int_events & FEC_ENET_TXF) {
+#ifdef CONFIG_FEC_PACKETHOOK
+			fec_enet_tx(dev, regval);
+#else
+			fec_enet_tx(dev);
+#endif
+		}
+
+		if (int_events & FEC_ENET_MII) {
+#ifdef	CONFIG_USE_MDIO
+			fec_enet_mii(dev);
+#else
+printk("%s[%d] %s: unexpected FEC_ENET_MII event\n", __FILE__,__LINE__,__FUNCTION__);
+#endif	/* CONFIG_USE_MDIO */
+		}
+
+	}
+}
+
+
+static void
+#ifdef CONFIG_FEC_PACKETHOOK
+fec_enet_tx(struct net_device *dev, __u32 regval)
+#else
+fec_enet_tx(struct net_device *dev)
+#endif
+{
+	struct	fec_enet_private *fep;
+	volatile cbd_t	*bdp;
+	struct	sk_buff	*skb;
+
+	fep = dev->priv;
+	/* lock while transmitting */
+	spin_lock(&fep->lock);
+	bdp = fep->dirty_tx;
+
+	while ((bdp->cbd_sc&BD_ENET_TX_READY) == 0) {
+		if (bdp == fep->cur_tx && fep->tx_full == 0) break;
+
+		skb = fep->tx_skbuff[fep->skb_dirty];
+		/* Check for errors. */
+		if (bdp->cbd_sc & (BD_ENET_TX_HB | BD_ENET_TX_LC |
+				   BD_ENET_TX_RL | BD_ENET_TX_UN |
+				   BD_ENET_TX_CSL)) {
+			fep->stats.tx_errors++;
+			if (bdp->cbd_sc & BD_ENET_TX_HB)  /* No heartbeat */
+				fep->stats.tx_heartbeat_errors++;
+			if (bdp->cbd_sc & BD_ENET_TX_LC)  /* Late collision */
+				fep->stats.tx_window_errors++;
+			if (bdp->cbd_sc & BD_ENET_TX_RL)  /* Retrans limit */
+				fep->stats.tx_aborted_errors++;
+			if (bdp->cbd_sc & BD_ENET_TX_UN)  /* Underrun */
+				fep->stats.tx_fifo_errors++;
+			if (bdp->cbd_sc & BD_ENET_TX_CSL) /* Carrier lost */
+				fep->stats.tx_carrier_errors++;
+		} else {
+#ifdef CONFIG_FEC_PACKETHOOK
+			/* Packet hook ... */
+			if (fep->ph_txhandler &&
+			    ((struct ethhdr *)skb->data)->h_proto
+			    == fep->ph_proto) {
+				fep->ph_txhandler((__u8*)skb->data, skb->len,
+						  regval, fep->ph_priv);
+			}
+#endif
+			fep->stats.tx_packets++;
+		}
+
+#ifndef final_version
+		if (bdp->cbd_sc & BD_ENET_TX_READY)
+			printk("HEY! Enet xmit interrupt and TX_READY.\n");
+#endif
+		/* Deferred means some collisions occurred during transmit,
+		 * but we eventually sent the packet OK.
+		 */
+		if (bdp->cbd_sc & BD_ENET_TX_DEF)
+			fep->stats.collisions++;
+
+		/* Free the sk buffer associated with this last transmit.
+		 */
+#if 0
+printk("TXI: %x %x %x\n", bdp, skb, fep->skb_dirty);
+#endif
+		dev_kfree_skb_irq (skb/*, FREE_WRITE*/);
+		fep->tx_skbuff[fep->skb_dirty] = NULL;
+		fep->skb_dirty = (fep->skb_dirty + 1) & TX_RING_MOD_MASK;
+
+		/* Update pointer to next buffer descriptor to be transmitted.
+		 */
+		if (bdp->cbd_sc & BD_ENET_TX_WRAP)
+			bdp = fep->tx_bd_base;
+		else
+			bdp++;
+
+		/* Since we have freed up a buffer, the ring is no longer
+		 * full.
+		 */
+		if (fep->tx_full) {
+			fep->tx_full = 0;
+			if (netif_queue_stopped(dev))
+				netif_wake_queue(dev);
+		}
+#ifdef CONFIG_FEC_PACKETHOOK
+		/* Re-read register. Not exactly guaranteed to be correct,
+		   but... */
+		if (fep->ph_regaddr) regval = *fep->ph_regaddr;
+#endif
+	}
+	fep->dirty_tx = (cbd_t *)bdp;
+	spin_unlock(&fep->lock);
+}
+
+
+/* During a receive, the cur_rx points to the current incoming buffer.
+ * When we update through the ring, if the next incoming buffer has
+ * not been given to the system, we just set the empty indicator,
+ * effectively tossing the packet.
+ */
+static void
+#ifdef CONFIG_FEC_PACKETHOOK
+fec_enet_rx(struct net_device *dev, __u32 regval)
+#else
+fec_enet_rx(struct net_device *dev)
+#endif
+{
+	struct	fec_enet_private *fep;
+	volatile fec_t	*fecp;
+	volatile cbd_t *bdp;
+	struct	sk_buff	*skb;
+	ushort	pkt_len;
+	__u8 *data;
+
+	fep = dev->priv;
+	fecp = (volatile fec_t*)dev->base_addr;
+
+	/* First, grab all of the stats for the incoming packet.
+	 * These get messed up if we get called due to a busy condition.
+	 */
+	bdp = fep->cur_rx;
+
+while (!(bdp->cbd_sc & BD_ENET_RX_EMPTY)) {
+
+#ifndef final_version
+	/* Since we have allocated space to hold a complete frame,
+	 * the last indicator should be set.
+	 */
+	if ((bdp->cbd_sc & BD_ENET_RX_LAST) == 0)
+		printk("FEC ENET: rcv is not +last\n");
+#endif
+
+	/* Check for errors. */
+	if (bdp->cbd_sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO |
+			   BD_ENET_RX_CR | BD_ENET_RX_OV)) {
+		fep->stats.rx_errors++;
+		if (bdp->cbd_sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) {
+		/* Frame too long or too short. */
+			fep->stats.rx_length_errors++;
+		}
+		if (bdp->cbd_sc & BD_ENET_RX_NO)	/* Frame alignment */
+			fep->stats.rx_frame_errors++;
+		if (bdp->cbd_sc & BD_ENET_RX_CR)	/* CRC Error */
+			fep->stats.rx_crc_errors++;
+		if (bdp->cbd_sc & BD_ENET_RX_OV)	/* FIFO overrun */
+			fep->stats.rx_crc_errors++;
+	}
+
+	/* Report late collisions as a frame error.
+	 * On this error, the BD is closed, but we don't know what we
+	 * have in the buffer.  So, just drop this frame on the floor.
+	 */
+	if (bdp->cbd_sc & BD_ENET_RX_CL) {
+		fep->stats.rx_errors++;
+		fep->stats.rx_frame_errors++;
+		goto rx_processing_done;
+	}
+
+	/* Process the incoming frame.
+	 */
+	fep->stats.rx_packets++;
+	pkt_len = bdp->cbd_datlen;
+	fep->stats.rx_bytes += pkt_len;
+	data = fep->rx_vaddr[bdp - fep->rx_bd_base];
+
+#ifdef CONFIG_FEC_PACKETHOOK
+	/* Packet hook ... */
+	if (fep->ph_rxhandler) {
+		if (((struct ethhdr *)data)->h_proto == fep->ph_proto) {
+			switch (fep->ph_rxhandler(data, pkt_len, regval,
+						  fep->ph_priv)) {
+			case 1:
+				goto rx_processing_done;
+				break;
+			case 0:
+				break;
+			default:
+				fep->stats.rx_errors++;
+				goto rx_processing_done;
+			}
+		}
+	}
+
+	/* If it wasn't filtered - copy it to an sk buffer. */
+#endif
+
+	/* This does 16 byte alignment, exactly what we need.
+	 * The packet length includes FCS, but we don't want to
+	 * include that when passing upstream as it messes up
+	 * bridging applications.
+	 */
+	skb = dev_alloc_skb(pkt_len-4);
+
+	if (skb == NULL) {
+		printk("%s: Memory squeeze, dropping packet.\n", dev->name);
+		fep->stats.rx_dropped++;
+	} else {
+		skb->dev = dev;
+		skb_put(skb,pkt_len-4);	/* Make room */
+		eth_copy_and_sum(skb, data, pkt_len-4, 0);
+		skb->protocol=eth_type_trans(skb,dev);
+		netif_rx(skb);
+	}
+  rx_processing_done:
+
+	/* Clear the status flags for this buffer.
+	*/
+	bdp->cbd_sc &= ~BD_ENET_RX_STATS;
+
+	/* Mark the buffer empty.
+	*/
+	bdp->cbd_sc |= BD_ENET_RX_EMPTY;
+
+	/* Update BD pointer to next entry.
+	*/
+	if (bdp->cbd_sc & BD_ENET_RX_WRAP)
+		bdp = fep->rx_bd_base;
+	else
+		bdp++;
+
+#if 1
+	/* Doing this here will keep the FEC running while we process
+	 * incoming frames.  On a heavily loaded network, we should be
+	 * able to keep up at the expense of system resources.
+	 */
+	fecp->fec_r_des_active = 0x01000000;
+#endif
+#ifdef CONFIG_FEC_PACKETHOOK
+	/* Re-read register. Not exactly guaranteed to be correct,
+	   but... */
+	if (fep->ph_regaddr) regval = *fep->ph_regaddr;
+#endif
+   } /* while (!(bdp->cbd_sc & BD_ENET_RX_EMPTY)) */
+	fep->cur_rx = (cbd_t *)bdp;
+
+#if 0
+	/* Doing this here will allow us to process all frames in the
+	 * ring before the FEC is allowed to put more there.  On a heavily
+	 * loaded network, some frames may be lost.  Unfortunately, this
+	 * increases the interrupt overhead since we can potentially work
+	 * our way back to the interrupt return only to come right back
+	 * here.
+	 */
+	fecp->fec_r_des_active = 0x01000000;
+#endif
+}
+
+
+#ifdef	CONFIG_USE_MDIO
+static void
+fec_enet_mii(struct net_device *dev)
+{
+	struct	fec_enet_private *fep;
+	volatile fec_t	*ep;
+	mii_list_t	*mip;
+	uint		mii_reg;
+
+	fep = (struct fec_enet_private *)dev->priv;
+	ep = &(((immap_t *)IMAP_ADDR)->im_cpm.cp_fec);
+	mii_reg = ep->fec_mii_data;
+
+	if ((mip = mii_head) == NULL) {
+		printk("MII and no head!\n");
+		return;
+	}
+
+	if (mip->mii_func != NULL)
+		(*(mip->mii_func))(mii_reg, dev);
+
+	mii_head = mip->mii_next;
+	mip->mii_next = mii_free;
+	mii_free = mip;
+
+	if ((mip = mii_head) != NULL) {
+		ep->fec_mii_data = mip->mii_regval;
+
+	}
+}
+
+static int
+mii_queue(struct net_device *dev, int regval, void (*func)(uint, struct net_device *))
+{
+	struct fec_enet_private *fep;
+	unsigned long	flags;
+	mii_list_t	*mip;
+	int		retval;
+
+	/* Add PHY address to register command.
+	*/
+	fep = dev->priv;
+	regval |= fep->phy_addr << 23;
+
+	retval = 0;
+
+	/* lock while modifying mii_list */
+	spin_lock_irqsave(&fep->lock, flags);
+
+	if ((mip = mii_free) != NULL) {
+		mii_free = mip->mii_next;
+		mip->mii_regval = regval;
+		mip->mii_func = func;
+		mip->mii_next = NULL;
+		if (mii_head) {
+			mii_tail->mii_next = mip;
+			mii_tail = mip;
+		} else {
+			mii_head = mii_tail = mip;
+			(&(((immap_t *)IMAP_ADDR)->im_cpm.cp_fec))->fec_mii_data = regval;
+		}
+	} else {
+		retval = 1;
+	}
+
+	spin_unlock_irqrestore(&fep->lock, flags);
+
+	return(retval);
+}
+
+static void mii_do_cmd(struct net_device *dev, const phy_cmd_t *c)
+{
+	int k;
+
+	if(!c)
+		return;
+
+	for(k = 0; (c+k)->mii_data != mk_mii_end; k++)
+		mii_queue(dev, (c+k)->mii_data, (c+k)->funct);
+}
+
+static void mii_parse_sr(uint mii_reg, struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+	volatile uint *s = &(fep->phy_status);
+
+	*s &= ~(PHY_STAT_LINK | PHY_STAT_FAULT | PHY_STAT_ANC);
+
+	if (mii_reg & 0x0004)
+		*s |= PHY_STAT_LINK;
+	if (mii_reg & 0x0010)
+		*s |= PHY_STAT_FAULT;
+	if (mii_reg & 0x0020)
+		*s |= PHY_STAT_ANC;
+
+	fep->link = (*s & PHY_STAT_LINK) ? 1 : 0;
+}
+
+static void mii_parse_cr(uint mii_reg, struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+	volatile uint *s = &(fep->phy_status);
+
+	*s &= ~(PHY_CONF_ANE | PHY_CONF_LOOP);
+
+	if (mii_reg & 0x1000)
+		*s |= PHY_CONF_ANE;
+	if (mii_reg & 0x4000)
+		*s |= PHY_CONF_LOOP;
+}
+
+static void mii_parse_anar(uint mii_reg, struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+	volatile uint *s = &(fep->phy_status);
+
+	*s &= ~(PHY_CONF_SPMASK);
+
+	if (mii_reg & 0x0020)
+		*s |= PHY_CONF_10HDX;
+	if (mii_reg & 0x0040)
+		*s |= PHY_CONF_10FDX;
+	if (mii_reg & 0x0080)
+		*s |= PHY_CONF_100HDX;
+	if (mii_reg & 0x00100)
+		*s |= PHY_CONF_100FDX;
+}
+#if 0
+static void mii_disp_reg(uint mii_reg, struct net_device *dev)
+{
+	printk("reg %u = 0x%04x\n", (mii_reg >> 18) & 0x1f, mii_reg & 0xffff);
+}
+#endif
+
+/* ------------------------------------------------------------------------- */
+/* The Level one LXT970 is used by many boards				     */
+
+#ifdef CONFIG_FEC_LXT970
+
+#define MII_LXT970_MIRROR    16  /* Mirror register           */
+#define MII_LXT970_IER       17  /* Interrupt Enable Register */
+#define MII_LXT970_ISR       18  /* Interrupt Status Register */
+#define MII_LXT970_CONFIG    19  /* Configuration Register    */
+#define MII_LXT970_CSR       20  /* Chip Status Register      */
+
+static void mii_parse_lxt970_csr(uint mii_reg, struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+	volatile uint *s = &(fep->phy_status);
+
+	*s &= ~(PHY_STAT_SPMASK);
+
+	if (mii_reg & 0x0800) {
+		if (mii_reg & 0x1000)
+			*s |= PHY_STAT_100FDX;
+		else
+			*s |= PHY_STAT_100HDX;
+	}
+	else {
+		if (mii_reg & 0x1000)
+			*s |= PHY_STAT_10FDX;
+		else
+			*s |= PHY_STAT_10HDX;
+	}
+}
+
+static phy_info_t phy_info_lxt970 = {
+	0x07810000,
+	"LXT970",
+
+	(const phy_cmd_t []) {  /* config */
+#if 0
+//		{ mk_mii_write(MII_REG_ANAR, 0x0021), NULL },
+
+		/* Set default operation of 100-TX....for some reason
+		 * some of these bits are set on power up, which is wrong.
+		 */
+		{ mk_mii_write(MII_LXT970_CONFIG, 0), NULL },
+#endif
+		{ mk_mii_read(MII_REG_CR), mii_parse_cr },
+		{ mk_mii_read(MII_REG_ANAR), mii_parse_anar },
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) {  /* startup - enable interrupts */
+		{ mk_mii_write(MII_LXT970_IER, 0x0002), NULL },
+		{ mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) { /* ack_int */
+		/* read SR and ISR to acknowledge */
+
+		{ mk_mii_read(MII_REG_SR), mii_parse_sr },
+		{ mk_mii_read(MII_LXT970_ISR), NULL },
+
+		/* find out the current status */
+
+		{ mk_mii_read(MII_LXT970_CSR), mii_parse_lxt970_csr },
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) {  /* shutdown - disable interrupts */
+		{ mk_mii_write(MII_LXT970_IER, 0x0000), NULL },
+		{ mk_mii_end, }
+	},
+};
+
+#endif /* CONFIG_FEC_LXT970 */
+
+/* ------------------------------------------------------------------------- */
+/* The Level one LXT971 is used on some of my custom boards                  */
+
+#ifdef CONFIG_FEC_LXT971
+
+/* register definitions for the 971 */
+
+#define MII_LXT971_PCR       16  /* Port Control Register     */
+#define MII_LXT971_SR2       17  /* Status Register 2         */
+#define MII_LXT971_IER       18  /* Interrupt Enable Register */
+#define MII_LXT971_ISR       19  /* Interrupt Status Register */
+#define MII_LXT971_LCR       20  /* LED Control Register      */
+#define MII_LXT971_TCR       30  /* Transmit Control Register */
+
+/*
+ * I had some nice ideas of running the MDIO faster...
+ * The 971 should support 8MHz and I tried it, but things acted really
+ * weird, so 2.5 MHz ought to be enough for anyone...
+ */
+
+static void mii_parse_lxt971_sr2(uint mii_reg, struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+	volatile uint *s = &(fep->phy_status);
+
+	*s &= ~(PHY_STAT_SPMASK);
+
+	if (mii_reg & 0x4000) {
+		if (mii_reg & 0x0200)
+			*s |= PHY_STAT_100FDX;
+		else
+			*s |= PHY_STAT_100HDX;
+	}
+	else {
+		if (mii_reg & 0x0200)
+			*s |= PHY_STAT_10FDX;
+		else
+			*s |= PHY_STAT_10HDX;
+	}
+	if (mii_reg & 0x0008)
+		*s |= PHY_STAT_FAULT;
+}
+
+static phy_info_t phy_info_lxt971 = {
+	0x0001378e,
+	"LXT971",
+
+	(const phy_cmd_t []) {  /* config */
+//		{ mk_mii_write(MII_REG_ANAR, 0x021), NULL }, /* 10  Mbps, HD */
+		{ mk_mii_read(MII_REG_CR), mii_parse_cr },
+		{ mk_mii_read(MII_REG_ANAR), mii_parse_anar },
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) {  /* startup - enable interrupts */
+		{ mk_mii_write(MII_LXT971_IER, 0x00f2), NULL },
+		{ mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
+
+		/* Somehow does the 971 tell me that the link is down
+		 * the first read after power-up.
+		 * read here to get a valid value in ack_int */
+
+		{ mk_mii_read(MII_REG_SR), mii_parse_sr },
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) { /* ack_int */
+		/* find out the current status */
+
+		{ mk_mii_read(MII_REG_SR), mii_parse_sr },
+		{ mk_mii_read(MII_LXT971_SR2), mii_parse_lxt971_sr2 },
+
+		/* we only need to read ISR to acknowledge */
+
+		{ mk_mii_read(MII_LXT971_ISR), NULL },
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) {  /* shutdown - disable interrupts */
+		{ mk_mii_write(MII_LXT971_IER, 0x0000), NULL },
+		{ mk_mii_end, }
+	},
+};
+
+#endif /* CONFIG_FEC_LXT970 */
+
+
+/* ------------------------------------------------------------------------- */
+/* The Quality Semiconductor QS6612 is used on the RPX CLLF                  */
+
+#ifdef CONFIG_FEC_QS6612
+
+/* register definitions */
+
+#define MII_QS6612_MCR       17  /* Mode Control Register      */
+#define MII_QS6612_FTR       27  /* Factory Test Register      */
+#define MII_QS6612_MCO       28  /* Misc. Control Register     */
+#define MII_QS6612_ISR       29  /* Interrupt Source Register  */
+#define MII_QS6612_IMR       30  /* Interrupt Mask Register    */
+#define MII_QS6612_PCR       31  /* 100BaseTx PHY Control Reg. */
+
+static void mii_parse_qs6612_pcr(uint mii_reg, struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+	volatile uint *s = &(fep->phy_status);
+
+	*s &= ~(PHY_STAT_SPMASK);
+
+	switch((mii_reg >> 2) & 7) {
+	case 1: *s |= PHY_STAT_10HDX; break;
+	case 2: *s |= PHY_STAT_100HDX; break;
+	case 5: *s |= PHY_STAT_10FDX; break;
+	case 6: *s |= PHY_STAT_100FDX; break;
+	}
+}
+
+static phy_info_t phy_info_qs6612 = {
+	0x00181440,
+	"QS6612",
+
+	(const phy_cmd_t []) {  /* config */
+//	{ mk_mii_write(MII_REG_ANAR, 0x061), NULL }, /* 10  Mbps */
+
+		/* The PHY powers up isolated on the RPX,
+		 * so send a command to allow operation.
+		 */
+
+		{ mk_mii_write(MII_QS6612_PCR, 0x0dc0), NULL },
+
+		/* parse cr and anar to get some info */
+
+		{ mk_mii_read(MII_REG_CR), mii_parse_cr },
+		{ mk_mii_read(MII_REG_ANAR), mii_parse_anar },
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) {  /* startup - enable interrupts */
+		{ mk_mii_write(MII_QS6612_IMR, 0x003a), NULL },
+		{ mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) { /* ack_int */
+
+		/* we need to read ISR, SR and ANER to acknowledge */
+
+		{ mk_mii_read(MII_QS6612_ISR), NULL },
+		{ mk_mii_read(MII_REG_SR), mii_parse_sr },
+		{ mk_mii_read(MII_REG_ANER), NULL },
+
+		/* read pcr to get info */
+
+		{ mk_mii_read(MII_QS6612_PCR), mii_parse_qs6612_pcr },
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) {  /* shutdown - disable interrupts */
+		{ mk_mii_write(MII_QS6612_IMR, 0x0000), NULL },
+		{ mk_mii_end, }
+	},
+};
+
+#endif /* CONFIG_FEC_QS6612 */
+
+/* ------------------------------------------------------------------------- */
+/* The Advanced Micro Devices AM79C874 is used on the ICU862		     */
+
+#ifdef CONFIG_FEC_AM79C874
+
+/* register definitions for the 79C874 */
+
+#define MII_AM79C874_MFR	16  /* Miscellaneous Features Register      */
+#define MII_AM79C874_ICSR	17  /* Interrupt Control/Status Register    */
+#define MII_AM79C874_DR		18  /* Diagnostic Register		    */
+#define MII_AM79C874_PMLR	19  /* Power Management & Loopback Register */
+#define MII_AM79C874_MCR	21  /* Mode Control Register		    */
+#define MII_AM79C874_DC		23  /* Disconnect Counter		    */
+#define MII_AM79C874_REC	24  /* Receiver Error Counter		    */
+
+static void mii_parse_amd79c874_dr(uint mii_reg, struct net_device *dev, uint data)
+{
+	volatile struct fec_enet_private *fep = dev->priv;
+	uint s = fep->phy_status;
+
+	s &= ~(PHY_STAT_SPMASK);
+
+	/* Register 18: Bit 10 is data rate, 11 is Duplex */
+	switch ((mii_reg >> 10) & 3) {
+	case 0:	s |= PHY_STAT_10HDX;	break;
+	case 1:	s |= PHY_STAT_100HDX;	break;
+	case 2:	s |= PHY_STAT_10FDX;	break;
+	case 3:	s |= PHY_STAT_100FDX;	break;
+	}
+
+	fep->phy_status = s;
+}
+
+static phy_info_t phy_info_amd79c874 = {
+	0x00022561,
+	"AM79C874",
+
+	(const phy_cmd_t []) {  /* config */
+//		{ mk_mii_write(MII_REG_ANAR, 0x021), NULL }, /* 10  Mbps, HD */
+		{ mk_mii_read(MII_REG_CR), mii_parse_cr },
+		{ mk_mii_read(MII_REG_ANAR), mii_parse_anar },
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) {  /* startup - enable interrupts */
+		{ mk_mii_write(MII_AM79C874_ICSR, 0xff00), NULL },
+		{ mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) { /* ack_int */
+		/* find out the current status */
+
+		{ mk_mii_read(MII_REG_SR), mii_parse_sr },
+		{ mk_mii_read(MII_AM79C874_DR), mii_parse_amd79c874_dr },
+
+		/* we only need to read ICSR to acknowledge */
+
+		{ mk_mii_read(MII_AM79C874_ICSR), NULL },
+		{ mk_mii_end, }
+	},
+	(const phy_cmd_t []) {  /* shutdown - disable interrupts */
+		{ mk_mii_write(MII_AM79C874_ICSR, 0x0000), NULL },
+		{ mk_mii_end, }
+	},
+};
+
+#endif /* CONFIG_FEC_AM79C874 */
+
+static phy_info_t *phy_info[] = {
+
+#ifdef CONFIG_FEC_LXT970
+	&phy_info_lxt970,
+#endif /* CONFIG_FEC_LXT970 */
+
+#ifdef CONFIG_FEC_LXT971
+	&phy_info_lxt971,
+#endif /* CONFIG_FEC_LXT971 */
+
+#ifdef CONFIG_FEC_QS6612
+	&phy_info_qs6612,
+#endif /* CONFIG_FEC_QS6612 */
+
+#ifdef CONFIG_FEC_AM79C874
+	&phy_info_amd79c874,
+#endif /* CONFIG_FEC_AM79C874 */
+
+	NULL
+};
+
+static void mii_display_status(struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+	volatile uint *s = &(fep->phy_status);
+
+	if (!fep->link && !fep->old_link) {
+		/* Link is still down - don't print anything */
+		return;
+	}
+
+	printk("%s: status: ", dev->name);
+
+	if (!fep->link) {
+		printk("link down");
+	} else {
+		printk("link up");
+
+		switch(*s & PHY_STAT_SPMASK) {
+		case PHY_STAT_100FDX: printk(", 100 Mbps Full Duplex"); break;
+		case PHY_STAT_100HDX: printk(", 100 Mbps Half Duplex"); break;
+		case PHY_STAT_10FDX: printk(", 10 Mbps Full Duplex"); break;
+		case PHY_STAT_10HDX: printk(", 10 Mbps Half Duplex"); break;
+		default:
+			printk(", Unknown speed/duplex");
+		}
+
+		if (*s & PHY_STAT_ANC)
+			printk(", auto-negotiation complete");
+	}
+
+	if (*s & PHY_STAT_FAULT)
+		printk(", remote fault");
+
+	printk(".\n");
+}
+
+static void mii_display_config(struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+	volatile uint *s = &(fep->phy_status);
+
+	printk("%s: config: auto-negotiation ", dev->name);
+
+	if (*s & PHY_CONF_ANE)
+		printk("on");
+	else
+		printk("off");
+
+	if (*s & PHY_CONF_100FDX)
+		printk(", 100FDX");
+	if (*s & PHY_CONF_100HDX)
+		printk(", 100HDX");
+	if (*s & PHY_CONF_10FDX)
+		printk(", 10FDX");
+	if (*s & PHY_CONF_10HDX)
+		printk(", 10HDX");
+	if (!(*s & PHY_CONF_SPMASK))
+		printk(", No speed/duplex selected?");
+
+	if (*s & PHY_CONF_LOOP)
+		printk(", loopback enabled");
+
+	printk(".\n");
+
+	fep->sequence_done = 1;
+}
+
+static void mii_relink(struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+	int duplex;
+
+	fep->link = (fep->phy_status & PHY_STAT_LINK) ? 1 : 0;
+	mii_display_status(dev);
+	fep->old_link = fep->link;
+
+	if (fep->link) {
+		duplex = 0;
+		if (fep->phy_status
+		    & (PHY_STAT_100FDX | PHY_STAT_10FDX))
+			duplex = 1;
+		fec_restart(dev, duplex);
+	}
+	else
+		fec_stop(dev);
+
+#if 0
+	enable_irq(fep->mii_irq);
+#endif
+
+}
+
+static void mii_queue_relink(uint mii_reg, struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+
+	fep->phy_task.routine = (void *)mii_relink;
+	fep->phy_task.data = dev;
+	schedule_task(&fep->phy_task);
+}
+
+static void mii_queue_config(uint mii_reg, struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+
+	fep->phy_task.routine = (void *)mii_display_config;
+	fep->phy_task.data = dev;
+	schedule_task(&fep->phy_task);
+}
+
+
+
+phy_cmd_t phy_cmd_relink[] = { { mk_mii_read(MII_REG_CR), mii_queue_relink },
+			       { mk_mii_end, } };
+phy_cmd_t phy_cmd_config[] = { { mk_mii_read(MII_REG_CR), mii_queue_config },
+			       { mk_mii_end, } };
+
+
+
+/* Read remainder of PHY ID.
+*/
+static void
+mii_discover_phy3(uint mii_reg, struct net_device *dev)
+{
+	struct fec_enet_private *fep;
+	int	i;
+
+	fep = dev->priv;
+	fep->phy_id |= (mii_reg & 0xffff);
+
+	for(i = 0; phy_info[i]; i++)
+		if(phy_info[i]->id == (fep->phy_id >> 4))
+			break;
+
+	if(!phy_info[i])
+		panic("%s: PHY id 0x%08x is not supported!\n",
+		      dev->name, fep->phy_id);
+
+	fep->phy = phy_info[i];
+	fep->phy_id_done = 1;
+
+	printk("%s: Phy @ 0x%x, type %s (0x%08x)\n",
+		dev->name, fep->phy_addr, fep->phy->name, fep->phy_id);
+}
+
+/* Scan all of the MII PHY addresses looking for someone to respond
+ * with a valid ID.  This usually happens quickly.
+ */
+static void
+mii_discover_phy(uint mii_reg, struct net_device *dev)
+{
+	struct fec_enet_private *fep;
+	uint	phytype;
+
+	fep = dev->priv;
+
+	if ((phytype = (mii_reg & 0xffff)) != 0xffff) {
+
+		/* Got first part of ID, now get remainder.
+		*/
+		fep->phy_id = phytype << 16;
+		mii_queue(dev, mk_mii_read(MII_REG_PHYIR2), mii_discover_phy3);
+	} else {
+		fep->phy_addr++;
+		if (fep->phy_addr < 32) {
+			mii_queue(dev, mk_mii_read(MII_REG_PHYIR1),
+							mii_discover_phy);
+		} else {
+			printk("fec: No PHY device found.\n");
+		}
+	}
+}
+#endif	/* CONFIG_USE_MDIO */
+
+/* This interrupt occurs when the PHY detects a link change.
+*/
+static void
+#ifdef CONFIG_RPXCLASSIC
+mii_link_interrupt(void *dev_id)
+#else
+mii_link_interrupt(int irq, void * dev_id, struct pt_regs * regs)
+#endif
+{
+#ifdef	CONFIG_USE_MDIO
+	struct	net_device *dev = dev_id;
+	struct fec_enet_private *fep = dev->priv;
+	volatile immap_t *immap = (immap_t *)IMAP_ADDR;
+	volatile fec_t *fecp = &(immap->im_cpm.cp_fec);
+	unsigned int ecntrl = fecp->fec_ecntrl;
+
+	/* We need the FEC enabled to access the MII
+	*/
+	if ((ecntrl & FEC_ECNTRL_ETHER_EN) == 0) {
+		fecp->fec_ecntrl |= FEC_ECNTRL_ETHER_EN;
+	}
+#endif	/* CONFIG_USE_MDIO */
+
+#if 0
+	disable_irq(fep->mii_irq);  /* disable now, enable later */
+#endif
+
+
+#ifdef	CONFIG_USE_MDIO
+	mii_do_cmd(dev, fep->phy->ack_int);
+	mii_do_cmd(dev, phy_cmd_relink);  /* restart and display status */
+
+	if ((ecntrl & FEC_ECNTRL_ETHER_EN) == 0) {
+		fecp->fec_ecntrl = ecntrl;	/* restore old settings */
+	}
+#else
+printk("%s[%d] %s: unexpected Link interrupt\n", __FILE__,__LINE__,__FUNCTION__);
+#endif	/* CONFIG_USE_MDIO */
+
+}
+
+static int
+fec_enet_open(struct net_device *dev)
+{
+	struct fec_enet_private *fep = dev->priv;
+
+	/* I should reset the ring buffers here, but I don't yet know
+	 * a simple way to do that.
+	 */
+
+#ifdef	CONFIG_USE_MDIO
+	fep->sequence_done = 0;
+	fep->link = 0;
+
+	if (fep->phy) {
+		mii_do_cmd(dev, fep->phy->ack_int);
+		mii_do_cmd(dev, fep->phy->config);
+		mii_do_cmd(dev, phy_cmd_config);  /* display configuration */
+		while(!fep->sequence_done)
+			schedule();
+
+		mii_do_cmd(dev, fep->phy->startup);
+		netif_start_queue(dev);
+		return 0;		/* Success */
+	}
+	return -ENODEV;		/* No PHY we understand */
+#else
+	fep->link = 1;
+	netif_start_queue(dev);
+	return 0;	/* Success */
+#endif	/* CONFIG_USE_MDIO */
+
+}
+
+static int
+fec_enet_close(struct net_device *dev)
+{
+	/* Don't know what to do yet.
+	*/
+	netif_stop_queue(dev);
+	fec_stop(dev);
+
+	return 0;
+}
+
+static struct net_device_stats *fec_enet_get_stats(struct net_device *dev)
+{
+	struct fec_enet_private *fep = (struct fec_enet_private *)dev->priv;
+
+	return &fep->stats;
+}
+
+/* Set or clear the multicast filter for this adaptor.
+ * Skeleton taken from sunlance driver.
+ * The CPM Ethernet implementation allows Multicast as well as individual
+ * MAC address filtering.  Some of the drivers check to make sure it is
+ * a group multicast address, and discard those that are not.  I guess I
+ * will do the same for now, but just remove the test if you want
+ * individual filtering as well (do the upper net layers want or support
+ * this kind of feature?).
+ */
+
+static void set_multicast_list(struct net_device *dev)
+{
+	struct	fec_enet_private *fep;
+	volatile fec_t *ep;
+
+	fep = (struct fec_enet_private *)dev->priv;
+	ep = &(((immap_t *)IMAP_ADDR)->im_cpm.cp_fec);
+
+	if (dev->flags&IFF_PROMISC) {
+
+		/* Log any net taps. */
+		printk("%s: Promiscuous mode enabled.\n", dev->name);
+		ep->fec_r_cntrl |= FEC_RCNTRL_PROM;
+	} else {
+
+		ep->fec_r_cntrl &= ~FEC_RCNTRL_PROM;
+
+		if (dev->flags & IFF_ALLMULTI) {
+			/* Catch all multicast addresses, so set the
+			 * filter to all 1's.
+			 */
+			ep->fec_hash_table_high = 0xffffffff;
+			ep->fec_hash_table_low = 0xffffffff;
+		}
+#if 0
+		else {
+			/* Clear filter and add the addresses in the list.
+			*/
+			ep->sen_gaddr1 = 0;
+			ep->sen_gaddr2 = 0;
+			ep->sen_gaddr3 = 0;
+			ep->sen_gaddr4 = 0;
+
+			dmi = dev->mc_list;
+
+			for (i=0; i<dev->mc_count; i++) {
+
+				/* Only support group multicast for now.
+				*/
+				if (!(dmi->dmi_addr[0] & 1))
+					continue;
+
+				/* The address in dmi_addr is LSB first,
+				 * and taddr is MSB first.  We have to
+				 * copy bytes MSB first from dmi_addr.
+				 */
+				mcptr = (u_char *)dmi->dmi_addr + 5;
+				tdptr = (u_char *)&ep->sen_taddrh;
+				for (j=0; j<6; j++)
+					*tdptr++ = *mcptr--;
+
+				/* Ask CPM to run CRC and set bit in
+				 * filter mask.
+				 */
+				cpmp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SCC1, CPM_CR_SET_GADDR) | CPM_CR_FLG;
+				/* this delay is necessary here -- Cort */
+				udelay(10);
+				while (cpmp->cp_cpcr & CPM_CR_FLG);
+			}
+		}
+#endif
+	}
+}
+
+/* Initialize the FEC Ethernet on 860T.
+ */
+static int __init fec_enet_init(void)
+{
+	struct net_device *dev;
+	struct fec_enet_private *fep;
+	int i, j, k, err;
+	unsigned char	*eap, *iap, *ba;
+	unsigned long	mem_addr;
+	volatile	cbd_t	*bdp;
+	cbd_t		*cbd_base;
+	volatile	immap_t	*immap;
+	volatile	fec_t	*fecp;
+	bd_t		*bd;
+#ifdef CONFIG_SCC_ENET
+	unsigned char	tmpaddr[6];
+#endif
+
+	immap = (immap_t *)IMAP_ADDR;	/* pointer to internal registers */
+
+	bd = (bd_t *)__res;
+
+	dev = alloc_etherdev(sizeof(*fep));
+	if (!dev)
+		return -ENOMEM;
+
+	fep = dev->priv;
+
+	fecp = &(immap->im_cpm.cp_fec);
+
+	/* Whack a reset.  We should wait for this.
+	*/
+	fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
+	for (i = 0;
+	     (fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
+	     ++i) {
+		udelay(1);
+	}
+	if (i == FEC_RESET_DELAY) {
+		printk ("FEC Reset timeout!\n");
+	}
+
+	/* Set the Ethernet address.  If using multiple Enets on the 8xx,
+	 * this needs some work to get unique addresses.
+	 */
+	eap = (unsigned char *)my_enet_addr;
+	iap = bd->bi_enetaddr;
+
+#ifdef CONFIG_SCC_ENET
+	/*
+         * If a board has Ethernet configured both on a SCC and the
+         * FEC, it needs (at least) 2 MAC addresses (we know that Sun
+         * disagrees, but anyway). For the FEC port, we create
+         * another address by setting one of the address bits above
+         * something that would have (up to now) been allocated.
+	 */
+	for (i=0; i<6; i++)
+		tmpaddr[i] = *iap++;
+	tmpaddr[3] |= 0x80;
+	iap = tmpaddr;
+#endif
+
+	for (i=0; i<6; i++) {
+		dev->dev_addr[i] = *eap++ = *iap++;
+	}
+
+	/* Allocate memory for buffer descriptors.
+	*/
+	if (((RX_RING_SIZE + TX_RING_SIZE) * sizeof(cbd_t)) > PAGE_SIZE) {
+		printk("FEC init error.  Need more space.\n");
+		printk("FEC initialization failed.\n");
+		return 1;
+	}
+	cbd_base = (cbd_t *)consistent_alloc(GFP_KERNEL, PAGE_SIZE, &mem_addr);
+
+	/* Set receive and transmit descriptor base.
+	*/
+	fep->rx_bd_base = cbd_base;
+	fep->tx_bd_base = cbd_base + RX_RING_SIZE;
+
+	fep->skb_cur = fep->skb_dirty = 0;
+
+	/* Initialize the receive buffer descriptors.
+	*/
+	bdp = fep->rx_bd_base;
+	k = 0;
+	for (i=0; i<FEC_ENET_RX_PAGES; i++) {
+
+		/* Allocate a page.
+		*/
+		ba = (unsigned char *)consistent_alloc(GFP_KERNEL, PAGE_SIZE, &mem_addr);
+		/* BUG: no check for failure */
+
+		/* Initialize the BD for every fragment in the page.
+		*/
+		for (j=0; j<FEC_ENET_RX_FRPPG; j++) {
+			bdp->cbd_sc = BD_ENET_RX_EMPTY;
+			bdp->cbd_bufaddr = mem_addr;
+			fep->rx_vaddr[k++] = ba;
+			mem_addr += FEC_ENET_RX_FRSIZE;
+			ba += FEC_ENET_RX_FRSIZE;
+			bdp++;
+		}
+	}
+
+	/* Set the last buffer to wrap.
+	*/
+	bdp--;
+	bdp->cbd_sc |= BD_SC_WRAP;
+
+#ifdef CONFIG_FEC_PACKETHOOK
+	fep->ph_lock = 0;
+	fep->ph_rxhandler = fep->ph_txhandler = NULL;
+	fep->ph_proto = 0;
+	fep->ph_regaddr = NULL;
+	fep->ph_priv = NULL;
+#endif
+
+	/* Install our interrupt handler.
+	*/
+	if (request_irq(FEC_INTERRUPT, fec_enet_interrupt, 0, "fec", dev) != 0)
+		panic("Could not allocate FEC IRQ!");
+
+#ifdef CONFIG_RPXCLASSIC
+	/* Make Port C, bit 15 an input that causes interrupts.
+	*/
+	immap->im_ioport.iop_pcpar &= ~0x0001;
+	immap->im_ioport.iop_pcdir &= ~0x0001;
+	immap->im_ioport.iop_pcso  &= ~0x0001;
+	immap->im_ioport.iop_pcint |=  0x0001;
+	cpm_install_handler(CPMVEC_PIO_PC15, mii_link_interrupt, dev);
+
+	/* Make LEDS reflect Link status.
+	*/
+	*((uint *) RPX_CSR_ADDR) &= ~BCSR2_FETHLEDMODE;
+#endif
+
+#ifdef PHY_INTERRUPT
+	((immap_t *)IMAP_ADDR)->im_siu_conf.sc_siel |=
+		(0x80000000 >> PHY_INTERRUPT);
+
+	if (request_irq(PHY_INTERRUPT, mii_link_interrupt, 0, "mii", dev) != 0)
+		panic("Could not allocate MII IRQ!");
+#endif
+
+	dev->base_addr = (unsigned long)fecp;
+
+	/* The FEC Ethernet specific entries in the device structure. */
+	dev->open = fec_enet_open;
+	dev->hard_start_xmit = fec_enet_start_xmit;
+	dev->tx_timeout = fec_timeout;
+	dev->watchdog_timeo = TX_TIMEOUT;
+	dev->stop = fec_enet_close;
+	dev->get_stats = fec_enet_get_stats;
+	dev->set_multicast_list = set_multicast_list;
+
+#ifdef	CONFIG_USE_MDIO
+	for (i=0; i<NMII-1; i++)
+		mii_cmds[i].mii_next = &mii_cmds[i+1];
+	mii_free = mii_cmds;
+#endif	/* CONFIG_USE_MDIO */
+
+	/* Configure all of port D for MII.
+	*/
+	immap->im_ioport.iop_pdpar = 0x1fff;
+
+	/* Bits moved from Rev. D onward.
+	*/
+	if ((mfspr(SPRN_IMMR) & 0xffff) < 0x0501)
+		immap->im_ioport.iop_pddir = 0x1c58;	/* Pre rev. D */
+	else
+		immap->im_ioport.iop_pddir = 0x1fff;	/* Rev. D and later */
+
+#ifdef	CONFIG_USE_MDIO
+	/* Set MII speed to 2.5 MHz
+	*/
+	fecp->fec_mii_speed = fep->phy_speed =
+		(( (bd->bi_intfreq + 500000) / 2500000 / 2 ) & 0x3F ) << 1;
+#else
+	fecp->fec_mii_speed = 0;	/* turn off MDIO */
+#endif	/* CONFIG_USE_MDIO */
+
+	err = register_netdev(dev);
+	if (err) {
+		free_netdev(dev);
+		return err;
+	}
+
+	printk ("%s: FEC ENET Version 0.2, FEC irq %d"
+#ifdef PHY_INTERRUPT
+		", MII irq %d"
+#endif
+		", addr ",
+		dev->name, FEC_INTERRUPT
+#ifdef PHY_INTERRUPT
+		, PHY_INTERRUPT
+#endif
+	);
+	for (i=0; i<6; i++)
+		printk("%02x%c", dev->dev_addr[i], (i==5) ? '\n' : ':');
+
+#ifdef	CONFIG_USE_MDIO	/* start in full duplex mode, and negotiate speed */
+	fec_restart (dev, 1);
+#else			/* always use half duplex mode only */
+	fec_restart (dev, 0);
+#endif
+
+#ifdef	CONFIG_USE_MDIO
+	/* Queue up command to detect the PHY and initialize the
+	 * remainder of the interface.
+	 */
+	fep->phy_id_done = 0;
+	fep->phy_addr = 0;
+	mii_queue(dev, mk_mii_read(MII_REG_PHYIR1), mii_discover_phy);
+#endif	/* CONFIG_USE_MDIO */
+
+	return 0;
+}
+module_init(fec_enet_init);
+
+/* This function is called to start or restart the FEC during a link
+ * change.  This only happens when switching between half and full
+ * duplex.
+ */
+static void
+fec_restart(struct net_device *dev, int duplex)
+{
+	struct fec_enet_private *fep;
+	int i;
+	volatile	cbd_t	*bdp;
+	volatile	immap_t	*immap;
+	volatile	fec_t	*fecp;
+
+	immap = (immap_t *)IMAP_ADDR;	/* pointer to internal registers */
+
+	fecp = &(immap->im_cpm.cp_fec);
+
+	fep = dev->priv;
+
+	/* Whack a reset.  We should wait for this.
+	*/
+	fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
+	for (i = 0;
+	     (fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
+	     ++i) {
+		udelay(1);
+	}
+	if (i == FEC_RESET_DELAY) {
+		printk ("FEC Reset timeout!\n");
+	}
+
+	/* Set station address.
+	*/
+	fecp->fec_addr_low  = (my_enet_addr[0] << 16) | my_enet_addr[1];
+	fecp->fec_addr_high =  my_enet_addr[2];
+
+	/* Reset all multicast.
+	*/
+	fecp->fec_hash_table_high = 0;
+	fecp->fec_hash_table_low  = 0;
+
+	/* Set maximum receive buffer size.
+	*/
+	fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
+	fecp->fec_r_hash = PKT_MAXBUF_SIZE;
+
+	/* Set receive and transmit descriptor base.
+	*/
+	fecp->fec_r_des_start = iopa((uint)(fep->rx_bd_base));
+	fecp->fec_x_des_start = iopa((uint)(fep->tx_bd_base));
+
+	fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
+	fep->cur_rx = fep->rx_bd_base;
+
+	/* Reset SKB transmit buffers.
+	*/
+	fep->skb_cur = fep->skb_dirty = 0;
+	for (i=0; i<=TX_RING_MOD_MASK; i++) {
+		if (fep->tx_skbuff[i] != NULL) {
+			dev_kfree_skb(fep->tx_skbuff[i]);
+			fep->tx_skbuff[i] = NULL;
+		}
+	}
+
+	/* Initialize the receive buffer descriptors.
+	*/
+	bdp = fep->rx_bd_base;
+	for (i=0; i<RX_RING_SIZE; i++) {
+
+		/* Initialize the BD for every fragment in the page.
+		*/
+		bdp->cbd_sc = BD_ENET_RX_EMPTY;
+		bdp++;
+	}
+
+	/* Set the last buffer to wrap.
+	*/
+	bdp--;
+	bdp->cbd_sc |= BD_SC_WRAP;
+
+	/* ...and the same for transmmit.
+	*/
+	bdp = fep->tx_bd_base;
+	for (i=0; i<TX_RING_SIZE; i++) {
+
+		/* Initialize the BD for every fragment in the page.
+		*/
+		bdp->cbd_sc = 0;
+		bdp->cbd_bufaddr = 0;
+		bdp++;
+	}
+
+	/* Set the last buffer to wrap.
+	*/
+	bdp--;
+	bdp->cbd_sc |= BD_SC_WRAP;
+
+	/* Enable MII mode.
+	*/
+	if (duplex) {
+		fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE;	/* MII enable */
+		fecp->fec_x_cntrl = FEC_TCNTRL_FDEN;		/* FD enable */
+	}
+	else {
+		fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE | FEC_RCNTRL_DRT;
+		fecp->fec_x_cntrl = 0;
+	}
+	fep->full_duplex = duplex;
+
+	/* Enable big endian and don't care about SDMA FC.
+	*/
+	fecp->fec_fun_code = 0x78000000;
+
+#ifdef	CONFIG_USE_MDIO
+	/* Set MII speed.
+	*/
+	fecp->fec_mii_speed = fep->phy_speed;
+#endif	/* CONFIG_USE_MDIO */
+
+	/* Clear any outstanding interrupt.
+	*/
+	fecp->fec_ievent = 0xffc0;
+
+	fecp->fec_ivec = (FEC_INTERRUPT/2) << 29;
+
+	/* Enable interrupts we wish to service.
+	*/
+	fecp->fec_imask = ( FEC_ENET_TXF | FEC_ENET_TXB |
+			    FEC_ENET_RXF | FEC_ENET_RXB | FEC_ENET_MII );
+
+	/* And last, enable the transmit and receive processing.
+	*/
+	fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
+	fecp->fec_r_des_active = 0x01000000;
+}
+
+static void
+fec_stop(struct net_device *dev)
+{
+	volatile	immap_t	*immap;
+	volatile	fec_t	*fecp;
+	struct fec_enet_private *fep;
+	int i;
+
+	immap = (immap_t *)IMAP_ADDR;	/* pointer to internal registers */
+
+	fecp = &(immap->im_cpm.cp_fec);
+
+	if ((fecp->fec_ecntrl & FEC_ECNTRL_ETHER_EN) == 0)
+		return;	/* already down */
+
+	fep = dev->priv;
+
+
+	fecp->fec_x_cntrl = 0x01;	/* Graceful transmit stop */
+
+	for (i = 0;
+	     ((fecp->fec_ievent & 0x10000000) == 0) && (i < FEC_RESET_DELAY);
+	     ++i) {
+		udelay(1);
+	}
+	if (i == FEC_RESET_DELAY) {
+		printk ("FEC timeout on graceful transmit stop\n");
+	}
+
+	/* Clear outstanding MII command interrupts.
+	*/
+	fecp->fec_ievent = FEC_ENET_MII;
+
+	/* Enable MII command finished interrupt
+	*/
+	fecp->fec_ivec = (FEC_INTERRUPT/2) << 29;
+	fecp->fec_imask = FEC_ENET_MII;
+
+#ifdef	CONFIG_USE_MDIO
+	/* Set MII speed.
+	*/
+	fecp->fec_mii_speed = fep->phy_speed;
+#endif	/* CONFIG_USE_MDIO */
+
+	/* Disable FEC
+	*/
+	fecp->fec_ecntrl &= ~(FEC_ECNTRL_ETHER_EN);
+}
diff --git a/arch/ppc/8xx_io/micropatch.c b/arch/ppc/8xx_io/micropatch.c
new file mode 100644
index 0000000..312af07
--- /dev/null
+++ b/arch/ppc/8xx_io/micropatch.c
@@ -0,0 +1,744 @@
+
+/* Microcode patches for the CPM as supplied by Motorola.
+ * This is the one for IIC/SPI.  There is a newer one that
+ * also relocates SMC2, but this would require additional changes
+ * to uart.c, so I am holding off on that for a moment.
+ */
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <asm/irq.h>
+#include <asm/mpc8xx.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/8xx_immap.h>
+#include <asm/commproc.h>
+
+/*
+ * I2C/SPI relocation patch arrays.
+ */
+
+#ifdef CONFIG_I2C_SPI_UCODE_PATCH
+
+uint patch_2000[] = {
+	0x7FFFEFD9,
+	0x3FFD0000,
+	0x7FFB49F7,
+	0x7FF90000,
+	0x5FEFADF7,
+	0x5F89ADF7,
+	0x5FEFAFF7,
+	0x5F89AFF7,
+	0x3A9CFBC8,
+	0xE7C0EDF0,
+	0x77C1E1BB,
+	0xF4DC7F1D,
+	0xABAD932F,
+	0x4E08FDCF,
+	0x6E0FAFF8,
+	0x7CCF76CF,
+	0xFD1FF9CF,
+	0xABF88DC6,
+	0xAB5679F7,
+	0xB0937383,
+	0xDFCE79F7,
+	0xB091E6BB,
+	0xE5BBE74F,
+	0xB3FA6F0F,
+	0x6FFB76CE,
+	0xEE0DF9CF,
+	0x2BFBEFEF,
+	0xCFEEF9CF,
+	0x76CEAD24,
+	0x90B2DF9A,
+	0x7FDDD0BF,
+	0x4BF847FD,
+	0x7CCF76CE,
+	0xCFEF7E1F,
+	0x7F1D7DFD,
+	0xF0B6EF71,
+	0x7FC177C1,
+	0xFBC86079,
+	0xE722FBC8,
+	0x5FFFDFFF,
+	0x5FB2FFFB,
+	0xFBC8F3C8,
+	0x94A67F01,
+	0x7F1D5F39,
+	0xAFE85F5E,
+	0xFFDFDF96,
+	0xCB9FAF7D,
+	0x5FC1AFED,
+	0x8C1C5FC1,
+	0xAFDD5FC3,
+	0xDF9A7EFD,
+	0xB0B25FB2,
+	0xFFFEABAD,
+	0x5FB2FFFE,
+	0x5FCE600B,
+	0xE6BB600B,
+	0x5FCEDFC6,
+	0x27FBEFDF,
+	0x5FC8CFDE,
+	0x3A9CE7C0,
+	0xEDF0F3C8,
+	0x7F0154CD,
+	0x7F1D2D3D,
+	0x363A7570,
+	0x7E0AF1CE,
+	0x37EF2E68,
+	0x7FEE10EC,
+	0xADF8EFDE,
+	0xCFEAE52F,
+	0x7D0FE12B,
+	0xF1CE5F65,
+	0x7E0A4DF8,
+	0xCFEA5F72,
+	0x7D0BEFEE,
+	0xCFEA5F74,
+	0xE522EFDE,
+	0x5F74CFDA,
+	0x0B627385,
+	0xDF627E0A,
+	0x30D8145B,
+	0xBFFFF3C8,
+	0x5FFFDFFF,
+	0xA7F85F5E,
+	0xBFFE7F7D,
+	0x10D31450,
+	0x5F36BFFF,
+	0xAF785F5E,
+	0xBFFDA7F8,
+	0x5F36BFFE,
+	0x77FD30C0,
+	0x4E08FDCF,
+	0xE5FF6E0F,
+	0xAFF87E1F,
+	0x7E0FFD1F,
+	0xF1CF5F1B,
+	0xABF80D5E,
+	0x5F5EFFEF,
+	0x79F730A2,
+	0xAFDD5F34,
+	0x47F85F34,
+	0xAFED7FDD,
+	0x50B24978,
+	0x47FD7F1D,
+	0x7DFD70AD,
+	0xEF717EC1,
+	0x6BA47F01,
+	0x2D267EFD,
+	0x30DE5F5E,
+	0xFFFD5F5E,
+	0xFFEF5F5E,
+	0xFFDF0CA0,
+	0xAFED0A9E,
+	0xAFDD0C3A,
+	0x5F3AAFBD,
+	0x7FBDB082,
+	0x5F8247F8
+};
+
+uint patch_2f00[] = {
+	0x3E303430,
+	0x34343737,
+	0xABF7BF9B,
+	0x994B4FBD,
+	0xBD599493,
+	0x349FFF37,
+	0xFB9B177D,
+	0xD9936956,
+	0xBBFDD697,
+	0xBDD2FD11,
+	0x31DB9BB3,
+	0x63139637,
+	0x93733693,
+	0x193137F7,
+	0x331737AF,
+	0x7BB9B999,
+	0xBB197957,
+	0x7FDFD3D5,
+	0x73B773F7,
+	0x37933B99,
+	0x1D115316,
+	0x99315315,
+	0x31694BF4,
+	0xFBDBD359,
+	0x31497353,
+	0x76956D69,
+	0x7B9D9693,
+	0x13131979,
+	0x79376935
+};
+#endif
+
+/*
+ * I2C/SPI/SMC1 relocation patch arrays.
+ */
+
+#ifdef CONFIG_I2C_SPI_SMC1_UCODE_PATCH
+
+uint patch_2000[] = {
+	0x3fff0000,
+	0x3ffd0000,
+	0x3ffb0000,
+	0x3ff90000,
+	0x5f13eff8,
+	0x5eb5eff8,
+	0x5f88adf7,
+	0x5fefadf7,
+	0x3a9cfbc8,
+	0x77cae1bb,
+	0xf4de7fad,
+	0xabae9330,
+	0x4e08fdcf,
+	0x6e0faff8,
+	0x7ccf76cf,
+	0xfdaff9cf,
+	0xabf88dc8,
+	0xab5879f7,
+	0xb0925d8d,
+	0xdfd079f7,
+	0xb090e6bb,
+	0xe5bbe74f,
+	0x9e046f0f,
+	0x6ffb76ce,
+	0xee0cf9cf,
+	0x2bfbefef,
+	0xcfeef9cf,
+	0x76cead23,
+	0x90b3df99,
+	0x7fddd0c1,
+	0x4bf847fd,
+	0x7ccf76ce,
+	0xcfef77ca,
+	0x7eaf7fad,
+	0x7dfdf0b7,
+	0xef7a7fca,
+	0x77cafbc8,
+	0x6079e722,
+	0xfbc85fff,
+	0xdfff5fb3,
+	0xfffbfbc8,
+	0xf3c894a5,
+	0xe7c9edf9,
+	0x7f9a7fad,
+	0x5f36afe8,
+	0x5f5bffdf,
+	0xdf95cb9e,
+	0xaf7d5fc3,
+	0xafed8c1b,
+	0x5fc3afdd,
+	0x5fc5df99,
+	0x7efdb0b3,
+	0x5fb3fffe,
+	0xabae5fb3,
+	0xfffe5fd0,
+	0x600be6bb,
+	0x600b5fd0,
+	0xdfc827fb,
+	0xefdf5fca,
+	0xcfde3a9c,
+	0xe7c9edf9,
+	0xf3c87f9e,
+	0x54ca7fed,
+	0x2d3a3637,
+	0x756f7e9a,
+	0xf1ce37ef,
+	0x2e677fee,
+	0x10ebadf8,
+	0xefdecfea,
+	0xe52f7d9f,
+	0xe12bf1ce,
+	0x5f647e9a,
+	0x4df8cfea,
+	0x5f717d9b,
+	0xefeecfea,
+	0x5f73e522,
+	0xefde5f73,
+	0xcfda0b61,
+	0x5d8fdf61,
+	0xe7c9edf9,
+	0x7e9a30d5,
+	0x1458bfff,
+	0xf3c85fff,
+	0xdfffa7f8,
+	0x5f5bbffe,
+	0x7f7d10d0,
+	0x144d5f33,
+	0xbfffaf78,
+	0x5f5bbffd,
+	0xa7f85f33,
+	0xbffe77fd,
+	0x30bd4e08,
+	0xfdcfe5ff,
+	0x6e0faff8,
+	0x7eef7e9f,
+	0xfdeff1cf,
+	0x5f17abf8,
+	0x0d5b5f5b,
+	0xffef79f7,
+	0x309eafdd,
+	0x5f3147f8,
+	0x5f31afed,
+	0x7fdd50af,
+	0x497847fd,
+	0x7f9e7fed,
+	0x7dfd70a9,
+	0xef7e7ece,
+	0x6ba07f9e,
+	0x2d227efd,
+	0x30db5f5b,
+	0xfffd5f5b,
+	0xffef5f5b,
+	0xffdf0c9c,
+	0xafed0a9a,
+	0xafdd0c37,
+	0x5f37afbd,
+	0x7fbdb081,
+	0x5f8147f8,
+	0x3a11e710,
+	0xedf0ccdd,
+	0xf3186d0a,
+	0x7f0e5f06,
+	0x7fedbb38,
+	0x3afe7468,
+	0x7fedf4fc,
+	0x8ffbb951,
+	0xb85f77fd,
+	0xb0df5ddd,
+	0xdefe7fed,
+	0x90e1e74d,
+	0x6f0dcbf7,
+	0xe7decfed,
+	0xcb74cfed,
+	0xcfeddf6d,
+	0x91714f74,
+	0x5dd2deef,
+	0x9e04e7df,
+	0xefbb6ffb,
+	0xe7ef7f0e,
+	0x9e097fed,
+	0xebdbeffa,
+	0xeb54affb,
+	0x7fea90d7,
+	0x7e0cf0c3,
+	0xbffff318,
+	0x5fffdfff,
+	0xac59efea,
+	0x7fce1ee5,
+	0xe2ff5ee1,
+	0xaffbe2ff,
+	0x5ee3affb,
+	0xf9cc7d0f,
+	0xaef8770f,
+	0x7d0fb0c6,
+	0xeffbbfff,
+	0xcfef5ede,
+	0x7d0fbfff,
+	0x5ede4cf8,
+	0x7fddd0bf,
+	0x49f847fd,
+	0x7efdf0bb,
+	0x7fedfffd,
+	0x7dfdf0b7,
+	0xef7e7e1e,
+	0x5ede7f0e,
+	0x3a11e710,
+	0xedf0ccab,
+	0xfb18ad2e,
+	0x1ea9bbb8,
+	0x74283b7e,
+	0x73c2e4bb,
+	0x2ada4fb8,
+	0xdc21e4bb,
+	0xb2a1ffbf,
+	0x5e2c43f8,
+	0xfc87e1bb,
+	0xe74ffd91,
+	0x6f0f4fe8,
+	0xc7ba32e2,
+	0xf396efeb,
+	0x600b4f78,
+	0xe5bb760b,
+	0x53acaef8,
+	0x4ef88b0e,
+	0xcfef9e09,
+	0xabf8751f,
+	0xefef5bac,
+	0x741f4fe8,
+	0x751e760d,
+	0x7fdbf081,
+	0x741cafce,
+	0xefcc7fce,
+	0x751e70ac,
+	0x741ce7bb,
+	0x3372cfed,
+	0xafdbefeb,
+	0xe5bb760b,
+	0x53f2aef8,
+	0xafe8e7eb,
+	0x4bf8771e,
+	0x7e247fed,
+	0x4fcbe2cc,
+	0x7fbc30a9,
+	0x7b0f7a0f,
+	0x34d577fd,
+	0x308b5db7,
+	0xde553e5f,
+	0xaf78741f,
+	0x741f30f0,
+	0xcfef5e2c,
+	0x741f3eac,
+	0xafb8771e,
+	0x5e677fed,
+	0x0bd3e2cc,
+	0x741ccfec,
+	0xe5ca53cd,
+	0x6fcb4f74,
+	0x5dadde4b,
+	0x2ab63d38,
+	0x4bb3de30,
+	0x751f741c,
+	0x6c42effa,
+	0xefea7fce,
+	0x6ffc30be,
+	0xefec3fca,
+	0x30b3de2e,
+	0xadf85d9e,
+	0xaf7daefd,
+	0x5d9ede2e,
+	0x5d9eafdd,
+	0x761f10ac,
+	0x1da07efd,
+	0x30adfffe,
+	0x4908fb18,
+	0x5fffdfff,
+	0xafbb709b,
+	0x4ef85e67,
+	0xadf814ad,
+	0x7a0f70ad,
+	0xcfef50ad,
+	0x7a0fde30,
+	0x5da0afed,
+	0x3c12780f,
+	0xefef780f,
+	0xefef790f,
+	0xa7f85e0f,
+	0xffef790f,
+	0xefef790f,
+	0x14adde2e,
+	0x5d9eadfd,
+	0x5e2dfffb,
+	0xe79addfd,
+	0xeff96079,
+	0x607ae79a,
+	0xddfceff9,
+	0x60795dff,
+	0x607acfef,
+	0xefefefdf,
+	0xefbfef7f,
+	0xeeffedff,
+	0xebffe7ff,
+	0xafefafdf,
+	0xafbfaf7f,
+	0xaeffadff,
+	0xabffa7ff,
+	0x6fef6fdf,
+	0x6fbf6f7f,
+	0x6eff6dff,
+	0x6bff67ff,
+	0x2fef2fdf,
+	0x2fbf2f7f,
+	0x2eff2dff,
+	0x2bff27ff,
+	0x4e08fd1f,
+	0xe5ff6e0f,
+	0xaff87eef,
+	0x7e0ffdef,
+	0xf11f6079,
+	0xabf8f542,
+	0x7e0af11c,
+	0x37cfae3a,
+	0x7fec90be,
+	0xadf8efdc,
+	0xcfeae52f,
+	0x7d0fe12b,
+	0xf11c6079,
+	0x7e0a4df8,
+	0xcfea5dc4,
+	0x7d0befec,
+	0xcfea5dc6,
+	0xe522efdc,
+	0x5dc6cfda,
+	0x4e08fd1f,
+	0x6e0faff8,
+	0x7c1f761f,
+	0xfdeff91f,
+	0x6079abf8,
+	0x761cee24,
+	0xf91f2bfb,
+	0xefefcfec,
+	0xf91f6079,
+	0x761c27fb,
+	0xefdf5da7,
+	0xcfdc7fdd,
+	0xd09c4bf8,
+	0x47fd7c1f,
+	0x761ccfcf,
+	0x7eef7fed,
+	0x7dfdf093,
+	0xef7e7f1e,
+	0x771efb18,
+	0x6079e722,
+	0xe6bbe5bb,
+	0xae0ae5bb,
+	0x600bae85,
+	0xe2bbe2bb,
+	0xe2bbe2bb,
+	0xaf02e2bb,
+	0xe2bb2ff9,
+	0x6079e2bb
+};
+
+uint patch_2f00[] = {
+	0x30303030,
+	0x3e3e3434,
+	0xabbf9b99,
+	0x4b4fbdbd,
+	0x59949334,
+	0x9fff37fb,
+	0x9b177dd9,
+	0x936956bb,
+	0xfbdd697b,
+	0xdd2fd113,
+	0x1db9f7bb,
+	0x36313963,
+	0x79373369,
+	0x3193137f,
+	0x7331737a,
+	0xf7bb9b99,
+	0x9bb19795,
+	0x77fdfd3d,
+	0x573b773f,
+	0x737933f7,
+	0xb991d115,
+	0x31699315,
+	0x31531694,
+	0xbf4fbdbd,
+	0x35931497,
+	0x35376956,
+	0xbd697b9d,
+	0x96931313,
+	0x19797937,
+	0x6935af78,
+	0xb9b3baa3,
+	0xb8788683,
+	0x368f78f7,
+	0x87778733,
+	0x3ffffb3b,
+	0x8e8f78b8,
+	0x1d118e13,
+	0xf3ff3f8b,
+	0x6bd8e173,
+	0xd1366856,
+	0x68d1687b,
+	0x3daf78b8,
+	0x3a3a3f87,
+	0x8f81378f,
+	0xf876f887,
+	0x77fd8778,
+	0x737de8d6,
+	0xbbf8bfff,
+	0xd8df87f7,
+	0xfd876f7b,
+	0x8bfff8bd,
+	0x8683387d,
+	0xb873d87b,
+	0x3b8fd7f8,
+	0xf7338883,
+	0xbb8ee1f8,
+	0xef837377,
+	0x3337b836,
+	0x817d11f8,
+	0x7378b878,
+	0xd3368b7d,
+	0xed731b7d,
+	0x833731f3,
+	0xf22f3f23
+};
+
+uint patch_2e00[] = {
+	0x27eeeeee,
+	0xeeeeeeee,
+	0xeeeeeeee,
+	0xeeeeeeee,
+	0xee4bf4fb,
+	0xdbd259bb,
+	0x1979577f,
+	0xdfd2d573,
+	0xb773f737,
+	0x4b4fbdbd,
+	0x25b9b177,
+	0xd2d17376,
+	0x956bbfdd,
+	0x697bdd2f,
+	0xff9f79ff,
+	0xff9ff22f
+};
+#endif
+
+/*
+ *  USB SOF patch arrays.
+ */
+
+#ifdef CONFIG_USB_SOF_UCODE_PATCH
+
+uint patch_2000[] = {
+	0x7fff0000,
+	0x7ffd0000,
+	0x7ffb0000,
+	0x49f7ba5b,
+	0xba383ffb,
+	0xf9b8b46d,
+	0xe5ab4e07,
+	0xaf77bffe,
+	0x3f7bbf79,
+	0xba5bba38,
+	0xe7676076,
+	0x60750000
+};
+
+uint patch_2f00[] = {
+	0x3030304c,
+	0xcab9e441,
+	0xa1aaf220
+};
+#endif
+
+void
+cpm_load_patch(volatile immap_t *immr)
+{
+	volatile uint		*dp;		/* Dual-ported RAM. */
+	volatile cpm8xx_t	*commproc;
+	volatile iic_t		*iip;
+	volatile spi_t		*spp;
+	volatile smc_uart_t	*smp;
+	int	i;
+
+	commproc = (cpm8xx_t *)&immr->im_cpm;
+
+#ifdef CONFIG_USB_SOF_UCODE_PATCH
+	commproc->cp_rccr = 0;
+
+	dp = (uint *)(commproc->cp_dpmem);
+	for (i=0; i<(sizeof(patch_2000)/4); i++)
+		*dp++ = patch_2000[i];
+
+	dp = (uint *)&(commproc->cp_dpmem[0x0f00]);
+	for (i=0; i<(sizeof(patch_2f00)/4); i++)
+		*dp++ = patch_2f00[i];
+
+	commproc->cp_rccr = 0x0009;
+
+	printk("USB SOF microcode patch installed\n");
+#endif /* CONFIG_USB_SOF_UCODE_PATCH */
+
+#if defined(CONFIG_I2C_SPI_UCODE_PATCH) || \
+    defined(CONFIG_I2C_SPI_SMC1_UCODE_PATCH)
+
+	commproc->cp_rccr = 0;
+
+	dp = (uint *)(commproc->cp_dpmem);
+	for (i=0; i<(sizeof(patch_2000)/4); i++)
+		*dp++ = patch_2000[i];
+
+	dp = (uint *)&(commproc->cp_dpmem[0x0f00]);
+	for (i=0; i<(sizeof(patch_2f00)/4); i++)
+		*dp++ = patch_2f00[i];
+
+	iip = (iic_t *)&commproc->cp_dparam[PROFF_IIC];
+# define RPBASE 0x0500
+	iip->iic_rpbase = RPBASE;
+
+	/* Put SPI above the IIC, also 32-byte aligned.
+	*/
+	i = (RPBASE + sizeof(iic_t) + 31) & ~31;
+	spp = (spi_t *)&commproc->cp_dparam[PROFF_SPI];
+	spp->spi_rpbase = i;
+
+# if defined(CONFIG_I2C_SPI_UCODE_PATCH)
+	commproc->cp_cpmcr1 = 0x802a;
+	commproc->cp_cpmcr2 = 0x8028;
+	commproc->cp_cpmcr3 = 0x802e;
+	commproc->cp_cpmcr4 = 0x802c;
+	commproc->cp_rccr = 1;
+
+	printk("I2C/SPI microcode patch installed.\n");
+# endif /* CONFIG_I2C_SPI_UCODE_PATCH */
+
+# if defined(CONFIG_I2C_SPI_SMC1_UCODE_PATCH)
+
+	dp = (uint *)&(commproc->cp_dpmem[0x0e00]);
+	for (i=0; i<(sizeof(patch_2e00)/4); i++)
+		*dp++ = patch_2e00[i];
+
+	commproc->cp_cpmcr1 = 0x8080;
+	commproc->cp_cpmcr2 = 0x808a;
+	commproc->cp_cpmcr3 = 0x8028;
+	commproc->cp_cpmcr4 = 0x802a;
+	commproc->cp_rccr = 3;
+
+	smp = (smc_uart_t *)&commproc->cp_dparam[PROFF_SMC1];
+	smp->smc_rpbase = 0x1FC0;
+
+	printk("I2C/SPI/SMC1 microcode patch installed.\n");
+# endif /* CONFIG_I2C_SPI_SMC1_UCODE_PATCH) */
+
+#endif /* some variation of the I2C/SPI patch was selected */
+}
+
+/*
+ *  Take this entire routine out, since no one calls it and its 
+ * logic is suspect.
+ */
+
+#if 0
+void
+verify_patch(volatile immap_t *immr)
+{
+	volatile uint		*dp;
+	volatile cpm8xx_t	*commproc;
+	int i;
+
+	commproc = (cpm8xx_t *)&immr->im_cpm;
+
+	printk("cp_rccr %x\n", commproc->cp_rccr);
+	commproc->cp_rccr = 0;
+
+	dp = (uint *)(commproc->cp_dpmem);
+	for (i=0; i<(sizeof(patch_2000)/4); i++)
+		if (*dp++ != patch_2000[i]) {
+			printk("patch_2000 bad at %d\n", i);
+			dp--;
+			printk("found 0x%X, wanted 0x%X\n", *dp, patch_2000[i]);
+			break;
+		}
+
+	dp = (uint *)&(commproc->cp_dpmem[0x0f00]);
+	for (i=0; i<(sizeof(patch_2f00)/4); i++)
+		if (*dp++ != patch_2f00[i]) {
+			printk("patch_2f00 bad at %d\n", i);
+			dp--;
+			printk("found 0x%X, wanted 0x%X\n", *dp, patch_2f00[i]);
+			break;
+		}
+
+	commproc->cp_rccr = 0x0009;
+}
+#endif