diff options
| -rw-r--r-- | arch/m68k/Kconfig | 13 | ||||
| -rw-r--r-- | arch/m68k/atari/Makefile | 3 | ||||
| -rw-r--r-- | arch/m68k/atari/ataints.c | 6 | ||||
| -rw-r--r-- | arch/m68k/atari/config.c | 37 | ||||
| -rw-r--r-- | arch/m68k/atari/hades-pci.c | 440 | ||||
| -rw-r--r-- | arch/m68k/kernel/bios32.c | 6 | ||||
| -rw-r--r-- | arch/m68k/kernel/process.c | 2 | ||||
| -rw-r--r-- | drivers/block/ataflop.c | 4 | ||||
| -rw-r--r-- | drivers/scsi/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/scsi/atari_dma_emul.c | 468 | ||||
| -rw-r--r-- | drivers/scsi/atari_scsi.c | 27 | ||||
| -rw-r--r-- | include/asm-m68k/atarihw.h | 1 | ||||
| -rw-r--r-- | include/asm-m68k/entry.h | 2 | ||||
| -rw-r--r-- | include/asm-m68k/virtconvert.h | 6 |
14 files changed, 23 insertions, 1000 deletions
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index c56af4b..2ec21f7 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -122,22 +122,9 @@ config ATARI this kernel on an Atari, say Y here and browse the material available in <file:Documentation/m68k>; otherwise say N. -config HADES - bool "Hades support" - depends on ATARI && BROKEN - help - This option enables support for the Hades Atari clone. If you plan - to use this kernel on a Hades, say Y here; otherwise say N. - config PCI bool - depends on HADES - default y help - Find out whether you have a PCI motherboard. PCI is the name of a - bus system, i.e. the way the CPU talks to the other stuff inside - your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or - VESA. If you have PCI, say Y, otherwise N. config MAC bool "Macintosh support" diff --git a/arch/m68k/atari/Makefile b/arch/m68k/atari/Makefile index 2cd905e..0cac723 100644 --- a/arch/m68k/atari/Makefile +++ b/arch/m68k/atari/Makefile @@ -5,7 +5,4 @@ obj-y := config.o time.o debug.o ataints.o stdma.o \ atasound.o stram.o -ifeq ($(CONFIG_PCI),y) -obj-$(CONFIG_HADES) += hades-pci.o -endif obj-$(CONFIG_ATARI_KBD_CORE) += atakeyb.o diff --git a/arch/m68k/atari/ataints.c b/arch/m68k/atari/ataints.c index b45593a..dba4afa 100644 --- a/arch/m68k/atari/ataints.c +++ b/arch/m68k/atari/ataints.c @@ -407,10 +407,8 @@ void __init atari_init_IRQ(void) * gets overruns) */ - if (!MACH_IS_HADES) { - vectors[VEC_INT2] = falcon_hblhandler; - vectors[VEC_INT4] = falcon_hblhandler; - } + vectors[VEC_INT2] = falcon_hblhandler; + vectors[VEC_INT4] = falcon_hblhandler; } if (ATARIHW_PRESENT(PCM_8BIT) && ATARIHW_PRESENT(MICROWIRE)) { diff --git a/arch/m68k/atari/config.c b/arch/m68k/atari/config.c index 5945e15..af03185 100644 --- a/arch/m68k/atari/config.c +++ b/arch/m68k/atari/config.c @@ -231,7 +231,7 @@ void __init config_atari(void) */ printk("Atari hardware found: "); - if (MACH_IS_MEDUSA || MACH_IS_HADES) { + if (MACH_IS_MEDUSA) { /* There's no Atari video hardware on the Medusa, but all the * addresses below generate a DTACK so no bus error occurs! */ } else if (hwreg_present(f030_xreg)) { @@ -269,10 +269,6 @@ void __init config_atari(void) ATARIHW_SET(SCSI_DMA); printk("TT_SCSI_DMA "); } - if (!MACH_IS_HADES && hwreg_present(&st_dma.dma_hi)) { - ATARIHW_SET(STND_DMA); - printk("STND_DMA "); - } /* * The ST-DMA address registers aren't readable * on all Medusas, so the test below may fail @@ -294,12 +290,11 @@ void __init config_atari(void) ATARIHW_SET(YM_2149); printk("YM2149 "); } - if (!MACH_IS_MEDUSA && !MACH_IS_HADES && - hwreg_present(&tt_dmasnd.ctrl)) { + if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) { ATARIHW_SET(PCM_8BIT); printk("PCM "); } - if (!MACH_IS_HADES && hwreg_present(&falcon_codec.unused5)) { + if (hwreg_present(&falcon_codec.unused5)) { ATARIHW_SET(CODEC); printk("CODEC "); } @@ -313,7 +308,7 @@ void __init config_atari(void) (tt_scc_dma.dma_ctrl = 0x01, (tt_scc_dma.dma_ctrl & 1) == 1) && (tt_scc_dma.dma_ctrl = 0x00, (tt_scc_dma.dma_ctrl & 1) == 0) #else - !MACH_IS_MEDUSA && !MACH_IS_HADES + !MACH_IS_MEDUSA #endif ) { ATARIHW_SET(SCC_DMA); @@ -327,10 +322,7 @@ void __init config_atari(void) ATARIHW_SET(ST_ESCC); printk("ST_ESCC "); } - if (MACH_IS_HADES) { - ATARIHW_SET(VME); - printk("VME "); - } else if (hwreg_present(&tt_scu.sys_mask)) { + if (hwreg_present(&tt_scu.sys_mask)) { ATARIHW_SET(SCU); /* Assume a VME bus if there's a SCU */ ATARIHW_SET(VME); @@ -340,7 +332,7 @@ void __init config_atari(void) ATARIHW_SET(ANALOG_JOY); printk("ANALOG_JOY "); } - if (!MACH_IS_HADES && hwreg_present(blitter.halftone)) { + if (hwreg_present(blitter.halftone)) { ATARIHW_SET(BLITTER); printk("BLITTER "); } @@ -349,8 +341,7 @@ void __init config_atari(void) printk("IDE "); } #if 1 /* This maybe wrong */ - if (!MACH_IS_MEDUSA && !MACH_IS_HADES && - hwreg_present(&tt_microwire.data) && + if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) && hwreg_present(&tt_microwire.mask) && (tt_microwire.mask = 0x7ff, udelay(1), @@ -369,19 +360,18 @@ void __init config_atari(void) mach_hwclk = atari_tt_hwclk; mach_set_clock_mmss = atari_tt_set_clock_mmss; } - if (!MACH_IS_HADES && hwreg_present(&mste_rtc.sec_ones)) { + if (hwreg_present(&mste_rtc.sec_ones)) { ATARIHW_SET(MSTE_CLK); printk("MSTE_CLK "); mach_hwclk = atari_mste_hwclk; mach_set_clock_mmss = atari_mste_set_clock_mmss; } - if (!MACH_IS_MEDUSA && !MACH_IS_HADES && - hwreg_present(&dma_wd.fdc_speed) && + if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) && hwreg_write(&dma_wd.fdc_speed, 0)) { ATARIHW_SET(FDCSPEED); printk("FDC_SPEED "); } - if (!MACH_IS_HADES && !ATARIHW_PRESENT(ST_SCSI)) { + if (!ATARIHW_PRESENT(ST_SCSI)) { ATARIHW_SET(ACSI); printk("ACSI "); } @@ -449,7 +439,7 @@ void __init config_atari(void) * 0xFFxxxxxx -> 0x00xxxxxx, so that the first 16MB is accessible * in the last 16MB of the address space. */ - tos_version = (MACH_IS_MEDUSA || MACH_IS_HADES) ? + tos_version = (MACH_IS_MEDUSA) ? 0xfff : *(unsigned short *)0xff000002; atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68; } @@ -511,8 +501,7 @@ static void atari_reset(void) * On the Medusa, phys. 0x4 may contain garbage because it's no * ROM. See above for explanation why we cannot use PTOV(4). */ - reset_addr = MACH_IS_HADES ? 0x7fe00030 : - MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 : + reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 : *(unsigned long *) 0xff000004; /* reset ACIA for switch off OverScan, if it's active */ @@ -606,8 +595,6 @@ static void atari_get_model(char *model) if (MACH_IS_MEDUSA) /* Medusa has TT _MCH cookie */ strcat(model, "Medusa"); - else if (MACH_IS_HADES) - strcat(model, "Hades"); else strcat(model, "TT"); break; diff --git a/arch/m68k/atari/hades-pci.c b/arch/m68k/atari/hades-pci.c deleted file mode 100644 index 2bbabc0..0000000 --- a/arch/m68k/atari/hades-pci.c +++ /dev/null @@ -1,440 +0,0 @@ -/* - * hades-pci.c - Hardware specific PCI BIOS functions the Hades Atari clone. - * - * Written by Wout Klaren. - */ - -#include <linux/init.h> -#include <linux/kernel.h> -#include <asm/io.h> - -#if 0 -# define DBG_DEVS(args) printk args -#else -# define DBG_DEVS(args) -#endif - -#if defined(CONFIG_PCI) && defined(CONFIG_HADES) - -#include <linux/slab.h> -#include <linux/mm.h> -#include <linux/pci.h> - -#include <asm/atarihw.h> -#include <asm/atariints.h> -#include <asm/byteorder.h> -#include <asm/pci.h> - -#define HADES_MEM_BASE 0x80000000 -#define HADES_MEM_SIZE 0x20000000 -#define HADES_CONFIG_BASE 0xA0000000 -#define HADES_CONFIG_SIZE 0x10000000 -#define HADES_IO_BASE 0xB0000000 -#define HADES_IO_SIZE 0x10000000 -#define HADES_VIRT_IO_SIZE 0x00010000 /* Only 64k is remapped and actually used. */ - -#define N_SLOTS 4 /* Number of PCI slots. */ - -static const char pci_mem_name[] = "PCI memory space"; -static const char pci_io_name[] = "PCI I/O space"; -static const char pci_config_name[] = "PCI config space"; - -static struct resource config_space = { - .name = pci_config_name, - .start = HADES_CONFIG_BASE, - .end = HADES_CONFIG_BASE + HADES_CONFIG_SIZE - 1 -}; -static struct resource io_space = { - .name = pci_io_name, - .start = HADES_IO_BASE, - .end = HADES_IO_BASE + HADES_IO_SIZE - 1 -}; - -static const unsigned long pci_conf_base_phys[] = { - 0xA0080000, 0xA0040000, 0xA0020000, 0xA0010000 -}; -static unsigned long pci_conf_base_virt[N_SLOTS]; -static unsigned long pci_io_base_virt; - -/* - * static void *mk_conf_addr(unsigned char bus, unsigned char device_fn, - * unsigned char where) - * - * Calculate the address of the PCI configuration area of the given - * device. - * - * BUG: boards with multiple functions are probably not correctly - * supported. - */ - -static void *mk_conf_addr(struct pci_dev *dev, int where) -{ - int device = dev->devfn >> 3, function = dev->devfn & 7; - void *result; - - DBG_DEVS(("mk_conf_addr(bus=%d ,device_fn=0x%x, where=0x%x, pci_addr=0x%p)\n", - dev->bus->number, dev->devfn, where, pci_addr)); - - if (device > 3) - { - DBG_DEVS(("mk_conf_addr: device (%d) > 3, returning NULL\n", device)); - return NULL; - } - - if (dev->bus->number != 0) - { - DBG_DEVS(("mk_conf_addr: bus (%d) > 0, returning NULL\n", device)); - return NULL; - } - - result = (void *) (pci_conf_base_virt[device] | (function << 8) | (where)); - DBG_DEVS(("mk_conf_addr: returning pci_addr 0x%lx\n", (unsigned long) result)); - return result; -} - -static int hades_read_config_byte(struct pci_dev *dev, int where, u8 *value) -{ - volatile unsigned char *pci_addr; - - *value = 0xff; - - if ((pci_addr = (unsigned char *) mk_conf_addr(dev, where)) == NULL) - return PCIBIOS_DEVICE_NOT_FOUND; - - *value = *pci_addr; - - return PCIBIOS_SUCCESSFUL; -} - -static int hades_read_config_word(struct pci_dev *dev, int where, u16 *value) -{ - volatile unsigned short *pci_addr; - - *value = 0xffff; - - if (where & 0x1) - return PCIBIOS_BAD_REGISTER_NUMBER; - - if ((pci_addr = (unsigned short *) mk_conf_addr(dev, where)) == NULL) - return PCIBIOS_DEVICE_NOT_FOUND; - - *value = le16_to_cpu(*pci_addr); - - return PCIBIOS_SUCCESSFUL; -} - -static int hades_read_config_dword(struct pci_dev *dev, int where, u32 *value) -{ - volatile unsigned int *pci_addr; - unsigned char header_type; - int result; - - *value = 0xffffffff; - - if (where & 0x3) - return PCIBIOS_BAD_REGISTER_NUMBER; - - if ((pci_addr = (unsigned int *) mk_conf_addr(dev, where)) == NULL) - return PCIBIOS_DEVICE_NOT_FOUND; - - *value = le32_to_cpu(*pci_addr); - - /* - * Check if the value is an address on the bus. If true, add the - * base address of the PCI memory or PCI I/O area on the Hades. - */ - - if ((result = hades_read_config_byte(dev, PCI_HEADER_TYPE, - &header_type)) != PCIBIOS_SUCCESSFUL) - return result; - - if (((where >= PCI_BASE_ADDRESS_0) && (where <= PCI_BASE_ADDRESS_1)) || - ((header_type != PCI_HEADER_TYPE_BRIDGE) && ((where >= PCI_BASE_ADDRESS_2) && - (where <= PCI_BASE_ADDRESS_5)))) - { - if ((*value & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO) - { - /* - * Base address register that contains an I/O address. If the - * address is valid on the Hades (0 <= *value < HADES_VIRT_IO_SIZE), - * add 'pci_io_base_virt' to the value. - */ - - if (*value < HADES_VIRT_IO_SIZE) - *value += pci_io_base_virt; - } - else - { - /* - * Base address register that contains an memory address. If the - * address is valid on the Hades (0 <= *value < HADES_MEM_SIZE), - * add HADES_MEM_BASE to the value. - */ - - if (*value == 0) - { - /* - * Base address is 0. Test if this base - * address register is used. - */ - - *pci_addr = 0xffffffff; - if (*pci_addr != 0) - { - *pci_addr = *value; - if (*value < HADES_MEM_SIZE) - *value += HADES_MEM_BASE; - } - } - else - { - if (*value < HADES_MEM_SIZE) - *value += HADES_MEM_BASE; - } - } - } - - return PCIBIOS_SUCCESSFUL; -} - -static int hades_write_config_byte(struct pci_dev *dev, int where, u8 value) -{ - volatile unsigned char *pci_addr; - - if ((pci_addr = (unsigned char *) mk_conf_addr(dev, where)) == NULL) - return PCIBIOS_DEVICE_NOT_FOUND; - - *pci_addr = value; - - return PCIBIOS_SUCCESSFUL; -} - -static int hades_write_config_word(struct pci_dev *dev, int where, u16 value) -{ - volatile unsigned short *pci_addr; - - if ((pci_addr = (unsigned short *) mk_conf_addr(dev, where)) == NULL) - return PCIBIOS_DEVICE_NOT_FOUND; - - *pci_addr = cpu_to_le16(value); - - return PCIBIOS_SUCCESSFUL; -} - -static int hades_write_config_dword(struct pci_dev *dev, int where, u32 value) -{ - volatile unsigned int *pci_addr; - unsigned char header_type; - int result; - - if ((pci_addr = (unsigned int *) mk_conf_addr(dev, where)) == NULL) - return PCIBIOS_DEVICE_NOT_FOUND; - - /* - * Check if the value is an address on the bus. If true, subtract the - * base address of the PCI memory or PCI I/O area on the Hades. - */ - - if ((result = hades_read_config_byte(dev, PCI_HEADER_TYPE, - &header_type)) != PCIBIOS_SUCCESSFUL) - return result; - - if (((where >= PCI_BASE_ADDRESS_0) && (where <= PCI_BASE_ADDRESS_1)) || - ((header_type != PCI_HEADER_TYPE_BRIDGE) && ((where >= PCI_BASE_ADDRESS_2) && - (where <= PCI_BASE_ADDRESS_5)))) - { - if ((value & PCI_BASE_ADDRESS_SPACE) == - PCI_BASE_ADDRESS_SPACE_IO) - { - /* - * I/O address. Check if the address is valid address on - * the Hades (pci_io_base_virt <= value < pci_io_base_virt + - * HADES_VIRT_IO_SIZE) or if the value is 0xffffffff. If not - * true do not write the base address register. If it is a - * valid base address subtract 'pci_io_base_virt' from the value. - */ - - if ((value >= pci_io_base_virt) && (value < (pci_io_base_virt + - HADES_VIRT_IO_SIZE))) - value -= pci_io_base_virt; - else - { - if (value != 0xffffffff) - return PCIBIOS_SET_FAILED; - } - } - else - { - /* - * Memory address. Check if the address is valid address on - * the Hades (HADES_MEM_BASE <= value < HADES_MEM_BASE + HADES_MEM_SIZE) or - * if the value is 0xffffffff. If not true do not write - * the base address register. If it is a valid base address - * subtract HADES_MEM_BASE from the value. - */ - - if ((value >= HADES_MEM_BASE) && (value < (HADES_MEM_BASE + HADES_MEM_SIZE))) - value -= HADES_MEM_BASE; - else - { - if (value != 0xffffffff) - return PCIBIOS_SET_FAILED; - } - } - } - - *pci_addr = cpu_to_le32(value); - - return PCIBIOS_SUCCESSFUL; -} - -/* - * static inline void hades_fixup(void) - * - * Assign IRQ numbers as used by Linux to the interrupt pins - * of the PCI cards. - */ - -static void __init hades_fixup(int pci_modify) -{ - char irq_tab[4] = { - [0] = IRQ_TT_MFP_IO0, /* Slot 0. */ - [1] = IRQ_TT_MFP_IO1, /* Slot 1. */ - [2] = IRQ_TT_MFP_SCC, /* Slot 2. */ - [3] = IRQ_TT_MFP_SCSIDMA /* Slot 3. */ - }; - struct pci_dev *dev = NULL; - unsigned char slot; - - /* - * Go through all devices, fixing up irqs as we see fit: - */ - - while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) - { - if (dev->class >> 16 != PCI_BASE_CLASS_BRIDGE) - { - slot = PCI_SLOT(dev->devfn); /* Determine slot number. */ - dev->irq = irq_tab[slot]; - if (pci_modify) - pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq); - } - } -} - -/* - * static void hades_conf_device(struct pci_dev *dev) - * - * Machine dependent Configure the given device. - * - * Parameters: - * - * dev - the pci device. - */ - -static void __init hades_conf_device(struct pci_dev *dev) -{ - pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 0); -} - -static struct pci_ops hades_pci_ops = { - .read_byte = hades_read_config_byte, - .read_word = hades_read_config_word, - .read_dword = hades_read_config_dword, - .write_byte = hades_write_config_byte, - .write_word = hades_write_config_word, - .write_dword = hades_write_config_dword -}; - -/* - * struct pci_bus_info *init_hades_pci(void) - * - * Machine specific initialisation: - * - * - Allocate and initialise a 'pci_bus_info' structure - * - Initialise hardware - * - * Result: pointer to 'pci_bus_info' structure. - */ - -struct pci_bus_info * __init init_hades_pci(void) -{ - struct pci_bus_info *bus; - int i; - - /* - * Remap I/O and configuration space. - */ - - pci_io_base_virt = (unsigned long) ioremap(HADES_IO_BASE, HADES_VIRT_IO_SIZE); - - for (i = 0; i < N_SLOTS; i++) - pci_conf_base_virt[i] = (unsigned long) ioremap(pci_conf_base_phys[i], 0x10000); - - /* - * Allocate memory for bus info structure. - */ - - bus = kzalloc(sizeof(struct pci_bus_info), GFP_KERNEL); - if (unlikely(!bus)) - goto iounmap_base_virt; - - /* - * Claim resources. The m68k has no separate I/O space, both - * PCI memory space and PCI I/O space are in memory space. Therefore - * the I/O resources are requested in memory space as well. - */ - - if (unlikely(request_resource(&iomem_resource, &config_space) != 0)) - goto free_bus; - - if (unlikely(request_resource(&iomem_resource, &io_space) != 0)) - goto release_config_space; - - bus->mem_space.start = HADES_MEM_BASE; - bus->mem_space.end = HADES_MEM_BASE + HADES_MEM_SIZE - 1; - bus->mem_space.name = pci_mem_name; -#if 1 - if (unlikely(request_resource(&iomem_resource, &bus->mem_space) != 0)) - goto release_io_space; -#endif - bus->io_space.start = pci_io_base_virt; - bus->io_space.end = pci_io_base_virt + HADES_VIRT_IO_SIZE - 1; - bus->io_space.name = pci_io_name; -#if 1 - if (unlikely(request_resource(&ioport_resource, &bus->io_space) != 0)) - goto release_bus_mem_space; -#endif - /* - * Set hardware dependent functions. - */ - - bus->m68k_pci_ops = &hades_pci_ops; - bus->fixup = hades_fixup; - bus->conf_device = hades_conf_device; - - /* - * Select high to low edge for PCI interrupts. - */ - - tt_mfp.active_edge &= ~0x27; - - return bus; - -release_bus_mem_space: - release_resource(&bus->mem_space); -release_io_space: - release_resource(&io_space); -release_config_space: - release_resource(&config_space); -free_bus: - kfree(bus); -iounmap_base_virt: - iounmap((void *)pci_io_base_virt); - - for (i = 0; i < N_SLOTS; i++) - iounmap((void *)pci_conf_base_virt[i]); - - return NULL; -} -#endif diff --git a/arch/m68k/kernel/bios32.c b/arch/m68k/kernel/bios32.c index af170c2b..1c3b752 100644 --- a/arch/m68k/kernel/bios32.c +++ b/arch/m68k/kernel/bios32.c @@ -476,10 +476,12 @@ void __init pcibios_init(void) printk("Linux/m68k PCI BIOS32 revision %x.%02x\n", MAJOR_REV, MINOR_REV); bus_info = NULL; -#ifdef CONFIG_HADES + +/* Hades code was: if (MACH_IS_HADES) bus_info = init_hades_pci(); -#endif +*/ + if (bus_info != NULL) { printk("PCI: Probing PCI hardware\n"); diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c index 7888cdf..3042c2b 100644 --- a/arch/m68k/kernel/process.c +++ b/arch/m68k/kernel/process.c @@ -78,7 +78,7 @@ unsigned long thread_saved_pc(struct task_struct *tsk) static void default_idle(void) { if (!need_resched()) -#if defined(MACH_ATARI_ONLY) && !defined(CONFIG_HADES) +#if defined(MACH_ATARI_ONLY) /* block out HSYNC on the atari (falcon) */ __asm__("stop #0x2200" : : : "cc"); #else diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c index 49f2741..432cf40 100644 --- a/drivers/block/ataflop.c +++ b/drivers/block/ataflop.c @@ -1882,10 +1882,6 @@ static int __init atari_floppy_init (void) /* Amiga, Mac, ... don't have Atari-compatible floppy :-) */ return -ENODEV; - if (MACH_IS_HADES) - /* Hades doesn't have Atari-compatible floppy */ - return -ENODEV; - if (register_blkdev(FLOPPY_MAJOR,"fd")) return -EBUSY; diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index d3b211a..96033ec 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -1670,14 +1670,6 @@ config ATARI_SCSI_RESET_BOOT boot process fractionally longer but may assist recovery from errors that leave the devices with SCSI operations partway completed. -config TT_DMA_EMUL - bool "Hades SCSI DMA emulator" - depends on ATARI_SCSI && HADES - help - This option enables code which emulates the TT SCSI DMA chip on the - Hades. This increases the SCSI transfer rates at least ten times - compared to PIO transfers. - config MAC_SCSI bool "Macintosh NCR5380 SCSI" depends on MAC && SCSI=y diff --git a/drivers/scsi/atari_dma_emul.c b/drivers/scsi/atari_dma_emul.c deleted file mode 100644 index cdc710e..0000000 --- a/drivers/scsi/atari_dma_emul.c +++ /dev/null @@ -1,468 +0,0 @@ -/* - * atari_dma_emul.c -- TT SCSI DMA emulator for the Hades. - * - * Copyright 1997 Wout Klaren <W.Klaren@inter.nl.net> - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - * - * This code was written using the Hades TOS source code as a - * reference. This source code can be found on the home page - * of Medusa Computer Systems. - * - * Version 0.1, 1997-09-24. - * - * This code should be considered experimental. It has only been - * tested on a Hades with a 68060. It might not work on a Hades - * with a 68040. Make backups of your hard drives before using - * this code. - */ - -#include <linux/compiler.h> -#include <asm/thread_info.h> -#include <asm/uaccess.h> - -#define hades_dma_ctrl (*(unsigned char *) 0xffff8717) -#define hades_psdm_reg (*(unsigned char *) 0xffff8741) - -#define TRANSFER_SIZE 16 - -struct m68040_frame { - unsigned long effaddr; /* effective address */ - unsigned short ssw; /* special status word */ - unsigned short wb3s; /* write back 3 status */ - unsigned short wb2s; /* write back 2 status */ - unsigned short wb1s; /* write back 1 status */ - unsigned long faddr; /* fault address */ - unsigned long wb3a; /* write back 3 address */ - unsigned long wb3d; /* write back 3 data */ - unsigned long wb2a; /* write back 2 address */ - unsigned long wb2d; /* write back 2 data */ - unsigned long wb1a; /* write back 1 address */ - unsigned long wb1dpd0; /* write back 1 data/push data 0*/ - unsigned long pd1; /* push data 1*/ - unsigned long pd2; /* push data 2*/ - unsigned long pd3; /* push data 3*/ -}; - -static void writeback (unsigned short wbs, unsigned long wba, - unsigned long wbd, void *old_buserr) -{ - mm_segment_t fs = get_fs(); - static void *save_buserr; - - __asm__ __volatile__ ("movec.l %%vbr,%%a0\n\t" - "move.l %0,8(%%a0)\n\t" - : - : "r" (&&bus_error) - : "a0" ); - - save_buserr = old_buserr; - - set_fs (MAKE_MM_SEG(wbs & WBTM_040)); - - switch (wbs & WBSIZ_040) { - case BA_SIZE_BYTE: - put_user (wbd & 0xff, (char *)wba); - break; - case BA_SIZE_WORD: - put_user (wbd & 0xffff, (short *)wba); - break; - case BA_SIZE_LONG: - put_user (wbd, (int *)wba); - break; - } - - set_fs (fs); - return; - -bus_error: - __asm__ __volatile__ ("cmp.l %0,2(%%sp)\n\t" - "bcs.s .jump_old\n\t" - "cmp.l %1,2(%%sp)\n\t" - "bls.s .restore_old\n" - ".jump_old:\n\t" - "move.l %2,-(%%sp)\n\t" - "rts\n" - ".restore_old:\n\t" - "move.l %%a0,-(%%sp)\n\t" - "movec.l %%vbr,%%a0\n\t" - "move.l %2,8(%%a0)\n\t" - "move.l (%%sp)+,%%a0\n\t" - "rte\n\t" - : - : "i" (writeback), "i" (&&bus_error), - "m" (save_buserr) ); -} - -/* - * static inline void set_restdata_reg(unsigned char *cur_addr) - * - * Set the rest data register if necessary. - */ - -static inline void set_restdata_reg(unsigned char *cur_addr) -{ - if (((long) cur_addr & ~3) != 0) - tt_scsi_dma.dma_restdata = - *((unsigned long *) ((long) cur_addr & ~3)); -} - -/* - * void hades_dma_emulator(int irq, void *dummy) - * - * This code emulates TT SCSI DMA on the Hades. - * - * Note the following: - * - * 1. When there is no byte available to read from the SCSI bus, or - * when a byte cannot yet bet written to the SCSI bus, a bus - * error occurs when reading or writing the pseudo DMA data - * register (hades_psdm_reg). We have to catch this bus error - * and try again to read or write the byte. If after several tries - * we still get a bus error, the interrupt handler is left. When - * the byte can be read or written, the interrupt handler is - * called again. - * - * 2. The SCSI interrupt must be disabled in this interrupt handler. - * - * 3. If we set the EOP signal, the SCSI controller still expects one - * byte to be read or written. Therefore the last byte is transferred - * separately, after setting the EOP signal. - * - * 4. When this function is left, the address pointer (start_addr) is - * converted to a physical address. Because it points one byte - * further than the last transferred byte, it can point outside the - * current page. If virt_to_phys() is called with this address we - * might get an access error. Therefore virt_to_phys() is called with - * start_addr - 1 if the count has reached zero. The result is - * increased with one. - */ - -static irqreturn_t hades_dma_emulator(int irq, void *dummy) -{ - unsigned long dma_base; - register unsigned long dma_cnt asm ("d3"); - static long save_buserr; - register unsigned long save_sp asm ("d4"); - register int tries asm ("d5"); - register unsigned char *start_addr asm ("a3"), *end_addr asm ("a4"); - register unsigned char *eff_addr; - register unsigned char *psdm_reg; - unsigned long rem; - - atari_disable_irq(IRQ_TT_MFP_SCSI); - - /* - * Read the dma address and count registers. - */ - - dma_base = SCSI_DMA_READ_P(dma_addr); - dma_cnt = SCSI_DMA_READ_P(dma_cnt); - - /* - * Check if DMA is still enabled. - */ - - if ((tt_scsi_dma.dma_ctrl & 2) == 0) - { - atari_enable_irq(IRQ_TT_MFP_SCSI); - return IRQ_HANDLED; - } - - if (dma_cnt == 0) - { - printk(KERN_NOTICE "DMA emulation: count is zero.\n"); - tt_scsi_dma.dma_ctrl &= 0xfd; /* DMA ready. */ - atari_enable_irq(IRQ_TT_MFP_SCSI); - return IRQ_HANDLED; - } - - /* - * Install new bus error routine. - */ - - __asm__ __volatile__ ("movec.l %%vbr,%%a0\n\t" - "move.l 8(%%a0),%0\n\t" - "move.l %1,8(%%a0)\n\t" - : "=&r" (save_buserr) - : "r" (&&scsi_bus_error) - : "a0" ); - - hades_dma_ctrl &= 0xfc; /* Bus error and EOP off. */ - - /* - * Save the stack pointer. - */ - - __asm__ __volatile__ ("move.l %%sp,%0\n\t" - : "=&r" (save_sp) ); - - tries = 100; /* Maximum number of bus errors. */ - start_addr = phys_to_virt(dma_base); - end_addr = start_addr + dma_cnt; - -scsi_loop: - dma_cnt--; - rem = dma_cnt & (TRANSFER_SIZE - 1); - dma_cnt &= ~(TRANSFER_SIZE - 1); - psdm_reg = &hades_psdm_reg; - - if (tt_scsi_dma.dma_ctrl & 1) /* Read or write? */ - { - /* - * SCSI write. Abort when count is zero. - */ - - switch (rem) - { - case 0: - while (dma_cnt > 0) - { - dma_cnt -= TRANSFER_SIZE; - - *psdm_reg = *start_addr++; - case 15: - *psdm_reg = *start_addr++; - case 14: - *psdm_reg = *start_addr++; - case 13: - *psdm_reg = *start_addr++; - case 12: - *psdm_reg = *start_addr++; - case 11: - *psdm_reg = *start_addr++; - case 10: - *psdm_reg = *start_addr++; - case 9: - *psdm_reg = *start_addr++; - case 8: - *psdm_reg = *start_addr++; - case 7: - *psdm_reg = *start_addr++; - case 6: - *psdm_reg = *start_addr++; - case 5: - *psdm_reg = *start_addr++; - case 4: - *psdm_reg = *start_addr++; - case 3: - *psdm_reg = *start_addr++; - case 2: - *psdm_reg = *start_addr++; - case 1: - *psdm_reg = *start_addr++; - } - } - - hades_dma_ctrl |= 1; /* Set EOP. */ - udelay(10); - *psdm_reg = *start_addr++; /* Dummy byte. */ - tt_scsi_dma.dma_ctrl &= 0xfd; /* DMA ready. */ - } - else - { - /* - * SCSI read. Abort when count is zero. - */ - - switch (rem) - { - case 0: - while (dma_cnt > 0) - { - dma_cnt -= TRANSFER_SIZE; - - *start_addr++ = *psdm_reg; - case 15: - *start_addr++ = *psdm_reg; - case 14: - *start_addr++ = *psdm_reg; - case 13: - *start_addr++ = *psdm_reg; - case 12: - *start_addr++ = *psdm_reg; - case 11: - *start_addr++ = *psdm_reg; - case 10: - *start_addr++ = *psdm_reg; - case 9: - *start_addr++ = *psdm_reg; - case 8: - *start_addr++ = *psdm_reg; - case 7: - *start_addr++ = *psdm_reg; - case 6: - *start_addr++ = *psdm_reg; - case 5: - *start_addr++ = *psdm_reg; - case 4: - *start_addr++ = *psdm_reg; - case 3: - *start_addr++ = *psdm_reg; - case 2: - *start_addr++ = *psdm_reg; - case 1: - *start_addr++ = *psdm_reg; - } - } - - hades_dma_ctrl |= 1; /* Set EOP. */ - udelay(10); - *start_addr++ = *psdm_reg; - tt_scsi_dma.dma_ctrl &= 0xfd; /* DMA ready. */ - - set_restdata_reg(start_addr); - } - - if (start_addr != end_addr) - printk(KERN_CRIT "DMA emulation: FATAL: Count is not zero at end of transfer.\n"); - - dma_cnt = end_addr - start_addr; - -scsi_end: - dma_base = (dma_cnt == 0) ? virt_to_phys(start_addr - 1) + 1 : - virt_to_phys(start_addr); - - SCSI_DMA_WRITE_P(dma_addr, dma_base); - SCSI_DMA_WRITE_P(dma_cnt, dma_cnt); - - /* - * Restore old bus error routine. - */ - - __asm__ __volatile__ ("movec.l %%vbr,%%a0\n\t" - "move.l %0,8(%%a0)\n\t" - : - : "r" (save_buserr) - : "a0" ); - - atari_enable_irq(IRQ_TT_MFP_SCSI); - - return IRQ_HANDLED; - -scsi_bus_error: - /* - * First check if the bus error is caused by our code. - * If not, call the original handler. - */ - - __asm__ __volatile__ ("cmp.l %0,2(%%sp)\n\t" - "bcs.s .old_vector\n\t" - "cmp.l %1,2(%%sp)\n\t" - "bls.s .scsi_buserr\n" - ".old_vector:\n\t" - "move.l %2,-(%%sp)\n\t" - "rts\n" - ".scsi_buserr:\n\t" - : - : "i" (&&scsi_loop), "i" (&&scsi_end), - "m" (save_buserr) ); - - if (CPU_IS_060) - { - /* - * Get effective address and restore the stack. - */ - - __asm__ __volatile__ ("move.l 8(%%sp),%0\n\t" - "move.l %1,%%sp\n\t" - : "=a&" (eff_addr) - : "r" (save_sp) ); - } - else - { - register struct m68040_frame *frame; - - __asm__ __volatile__ ("lea 8(%%sp),%0\n\t" - : "=a&" (frame) ); - - if (tt_scsi_dma.dma_ctrl & 1) - { - /* - * Bus error while writing. - */ - - if (frame->wb3s & WBV_040) - { - if (frame->wb3a == (long) &hades_psdm_reg) - start_addr--; - else - writeback(frame->wb3s, frame->wb3a, - frame->wb3d, &&scsi_bus_error); - } - - if (frame->wb2s & WBV_040) - { - if (frame->wb2a == (long) &hades_psdm_reg) - start_addr--; - else - writeback(frame->wb2s, frame->wb2a, - frame->wb2d, &&scsi_bus_error); - } - - if (frame->wb1s & WBV_040) - { - if (frame->wb1a == (long) &hades_psdm_reg) - start_addr--; - } - } - else - { - /* - * Bus error while reading. - */ - - if (frame->wb3s & WBV_040) - writeback(frame->wb3s, frame->wb3a, - frame->wb3d, &&scsi_bus_error); - } - - eff_addr = (unsigned char *) frame->faddr; - - __asm__ __volatile__ ("move.l %0,%%sp\n\t" - : - : "r" (save_sp) ); - } - - dma_cnt = end_addr - start_addr; - - if (eff_addr == &hades_psdm_reg) - { - /* - * Bus error occurred while reading the pseudo - * DMA register. Time out. - */ - - tries--; - - if (tries <= 0) - { - if ((tt_scsi_dma.dma_ctrl & 1) == 0) /* Read or write? */ - set_restdata_reg(start_addr); - - if (dma_cnt <= 1) - printk(KERN_CRIT "DMA emulation: Fatal " - "error while %s the last byte.\n", - (tt_scsi_dma.dma_ctrl & 1) - ? "writing" : "reading"); - - goto scsi_end; - } - else - goto scsi_loop; - } - else - { - /* - * Bus error during pseudo DMA transfer. - * Terminate the DMA transfer. - */ - - hades_dma_ctrl |= 3; /* Set EOP and bus error. */ - if ((tt_scsi_dma.dma_ctrl & 1) == 0) /* Read or write? */ - set_restdata_reg(start_addr); - goto scsi_end; - } -} diff --git a/drivers/scsi/atari_scsi.c b/drivers/scsi/atari_scsi.c index f5732d8..21fe07f 100644 --- a/drivers/scsi/atari_scsi.c +++ b/drivers/scsi/atari_scsi.c @@ -249,10 +249,6 @@ static int setup_hostid = -1; module_param(setup_hostid, int, 0); -#if defined(CONFIG_TT_DMA_EMUL) -#include "atari_dma_emul.c" -#endif - #if defined(REAL_DMA) static int scsi_dma_is_ignored_buserr(unsigned char dma_stat) @@ -695,21 +691,8 @@ int atari_scsi_detect(struct scsi_host_template *host) #ifdef REAL_DMA tt_scsi_dma.dma_ctrl = 0; atari_dma_residual = 0; -#ifdef CONFIG_TT_DMA_EMUL - if (MACH_IS_HADES) { - if (request_irq(IRQ_AUTO_2, hades_dma_emulator, - IRQ_TYPE_PRIO, "Hades DMA emulator", - hades_dma_emulator)) { - printk(KERN_ERR "atari_scsi_detect: cannot allocate irq %d, aborting (MACH_IS_HADES)",IRQ_AUTO_2); - free_irq(IRQ_TT_MFP_SCSI, instance); - scsi_unregister(atari_scsi_host); - atari_stram_free(atari_dma_buffer); - atari_dma_buffer = 0; - return 0; - } - } -#endif - if (MACH_IS_MEDUSA || MACH_IS_HADES) { + + if (MACH_IS_MEDUSA) { /* While the read overruns (described by Drew Eckhardt in * NCR5380.c) never happened on TTs, they do in fact on the Medusa * (This was the cause why SCSI didn't work right for so long @@ -1007,11 +990,7 @@ static unsigned long atari_dma_xfer_len(unsigned long wanted_len, Scsi_Cmnd *cmd, int write_flag) { unsigned long possible_len, limit; -#ifndef CONFIG_TT_DMA_EMUL - if (MACH_IS_HADES) - /* Hades has no SCSI DMA at all :-( Always force use of PIO */ - return 0; -#endif + if (IS_A_TT()) /* TT SCSI DMA can transfer arbitrary #bytes */ return wanted_len; diff --git a/include/asm-m68k/atarihw.h b/include/asm-m68k/atarihw.h index ecf007d..1412b4a 100644 --- a/include/asm-m68k/atarihw.h +++ b/include/asm-m68k/atarihw.h @@ -39,7 +39,6 @@ extern int atari_dont_touch_floppy_select; #define MACH_IS_TT ((atari_mch_cookie >> 16) == ATARI_MCH_TT) #define MACH_IS_FALCON ((atari_mch_cookie >> 16) == ATARI_MCH_FALCON) #define MACH_IS_MEDUSA (atari_mch_type == ATARI_MACH_MEDUSA) -#define MACH_IS_HADES (atari_mch_type == ATARI_MACH_HADES) #define MACH_IS_AB40 (atari_mch_type == ATARI_MACH_AB40) /* values for atari_switches */ diff --git a/include/asm-m68k/entry.h b/include/asm-m68k/entry.h index f8f6b18..5202f5a 100644 --- a/include/asm-m68k/entry.h +++ b/include/asm-m68k/entry.h @@ -31,7 +31,7 @@ */ /* the following macro is used when enabling interrupts */ -#if defined(MACH_ATARI_ONLY) && !defined(CONFIG_HADES) +#if defined(MACH_ATARI_ONLY) /* block out HSYNC on the atari */ #define ALLOWINT (~0x400) #define MAX_NOINT_IPL 3 diff --git a/include/asm-m68k/virtconvert.h b/include/asm-m68k/virtconvert.h index dea32fb..22ab05c 100644 --- a/include/asm-m68k/virtconvert.h +++ b/include/asm-m68k/virtconvert.h @@ -40,15 +40,9 @@ static inline void *phys_to_virt(unsigned long address) /* * IO bus memory addresses are 1:1 with the physical address, - * except on the PCI bus of the Hades. */ -#ifdef CONFIG_HADES -#define virt_to_bus(a) (virt_to_phys(a) + (MACH_IS_HADES ? 0x80000000 : 0)) -#define bus_to_virt(a) (phys_to_virt((a) - (MACH_IS_HADES ? 0x80000000 : 0))) -#else #define virt_to_bus virt_to_phys #define bus_to_virt phys_to_virt -#endif #endif #endif |