diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/Kconfig | 4 | ||||
| -rw-r--r-- | arch/mips/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/fw/lib/Makefile | 5 | ||||
| -rw-r--r-- | arch/mips/fw/lib/call_o32.S | 97 | ||||
| -rw-r--r-- | arch/mips/fw/sni/Makefile | 5 | ||||
| -rw-r--r-- | arch/mips/fw/sni/sniprom.c | 151 | ||||
| -rw-r--r-- | arch/mips/sni/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/sni/a20r.c | 13 | ||||
| -rw-r--r-- | arch/mips/sni/eisa.c | 50 | ||||
| -rw-r--r-- | arch/mips/sni/irq.c | 4 | ||||
| -rw-r--r-- | arch/mips/sni/rm200.c | 326 | ||||
| -rw-r--r-- | arch/mips/sni/setup.c | 143 | ||||
| -rw-r--r-- | arch/mips/sni/sniprom.c | 251 | ||||
| -rw-r--r-- | arch/mips/sni/time.c | 1 |
14 files changed, 784 insertions, 270 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 01740ef..d2d9cd8 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -602,6 +602,7 @@ config SNI_RM bool "SNI RM200/300/400" select ARC if CPU_LITTLE_ENDIAN select ARC32 if CPU_LITTLE_ENDIAN + select SNIPROM if CPU_BIG_ENDIAN select ARCH_MAY_HAVE_PC_FDC select BOOT_ELF32 select CEVT_R4K @@ -1003,6 +1004,9 @@ config DEFAULT_SGI_PARTITION config ARC32 bool +config SNIPROM + bool + config BOOT_ELF32 bool diff --git a/arch/mips/Makefile b/arch/mips/Makefile index dd668f3..2df68cd 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -156,6 +156,8 @@ endif # libs-$(CONFIG_ARC) += arch/mips/fw/arc/ libs-$(CONFIG_CFE) += arch/mips/fw/cfe/ +libs-$(CONFIG_SNIPROM) += arch/mips/fw/sni/ +libs-y += arch/mips/fw/lib/ libs-$(CONFIG_SIBYTE_CFE) += arch/mips/sibyte/cfe/ # diff --git a/arch/mips/fw/lib/Makefile b/arch/mips/fw/lib/Makefile new file mode 100644 index 0000000..84befc9 --- /dev/null +++ b/arch/mips/fw/lib/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for generic prom monitor library routines under Linux. +# + +lib-$(CONFIG_64BIT) += call_o32.o diff --git a/arch/mips/fw/lib/call_o32.S b/arch/mips/fw/lib/call_o32.S new file mode 100644 index 0000000..bdf7d1d --- /dev/null +++ b/arch/mips/fw/lib/call_o32.S @@ -0,0 +1,97 @@ +/* + * arch/mips/dec/prom/call_o32.S + * + * O32 interface for the 64 (or N32) ABI. + * + * Copyright (C) 2002 Maciej W. Rozycki + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <asm/asm.h> +#include <asm/regdef.h> + +/* Maximum number of arguments supported. Must be even! */ +#define O32_ARGC 32 +/* Number of static registers we save. */ +#define O32_STATC 11 +/* Frame size for static register */ +#define O32_FRAMESZ (SZREG * O32_STATC) +/* Frame size on new stack */ +#define O32_FRAMESZ_NEW (SZREG + 4 * O32_ARGC) + + .text + +/* + * O32 function call dispatcher, for interfacing 32-bit ROM routines. + * + * The standard 64 (N32) calling sequence is supported, with a0 + * holding a function pointer, a1 a new stack pointer, a2-a7 -- its + * first six arguments and the stack -- remaining ones (up to O32_ARGC, + * including a2-a7). Static registers, gp and fp are preserved, v0 holds + * a result. This code relies on the called o32 function for sp and ra + * restoration and this dispatcher has to be placed in a KSEGx (or KUSEG) + * address space. Any pointers passed have to point to addresses within + * one of these spaces as well. + */ +NESTED(call_o32, O32_FRAMESZ, ra) + REG_SUBU sp,O32_FRAMESZ + + REG_S ra,O32_FRAMESZ-1*SZREG(sp) + REG_S fp,O32_FRAMESZ-2*SZREG(sp) + REG_S gp,O32_FRAMESZ-3*SZREG(sp) + REG_S s7,O32_FRAMESZ-4*SZREG(sp) + REG_S s6,O32_FRAMESZ-5*SZREG(sp) + REG_S s5,O32_FRAMESZ-6*SZREG(sp) + REG_S s4,O32_FRAMESZ-7*SZREG(sp) + REG_S s3,O32_FRAMESZ-8*SZREG(sp) + REG_S s2,O32_FRAMESZ-9*SZREG(sp) + REG_S s1,O32_FRAMESZ-10*SZREG(sp) + REG_S s0,O32_FRAMESZ-11*SZREG(sp) + + move jp,a0 + REG_SUBU s0,a1,O32_FRAMESZ_NEW + REG_S sp,O32_FRAMESZ_NEW-1*SZREG(s0) + + sll a0,a2,zero + sll a1,a3,zero + sll a2,a4,zero + sll a3,a5,zero + sw a6,0x10(s0) + sw a7,0x14(s0) + + PTR_LA t0,O32_FRAMESZ(sp) + PTR_LA t1,0x18(s0) + li t2,O32_ARGC-6 +1: + lw t3,(t0) + REG_ADDU t0,SZREG + sw t3,(t1) + REG_SUBU t2,1 + REG_ADDU t1,4 + bnez t2,1b + + move sp,s0 + + jalr jp + + REG_L sp,O32_FRAMESZ_NEW-1*SZREG(sp) + + REG_L s0,O32_FRAMESZ-11*SZREG(sp) + REG_L s1,O32_FRAMESZ-10*SZREG(sp) + REG_L s2,O32_FRAMESZ-9*SZREG(sp) + REG_L s3,O32_FRAMESZ-8*SZREG(sp) + REG_L s4,O32_FRAMESZ-7*SZREG(sp) + REG_L s5,O32_FRAMESZ-6*SZREG(sp) + REG_L s6,O32_FRAMESZ-5*SZREG(sp) + REG_L s7,O32_FRAMESZ-4*SZREG(sp) + REG_L gp,O32_FRAMESZ-3*SZREG(sp) + REG_L fp,O32_FRAMESZ-2*SZREG(sp) + REG_L ra,O32_FRAMESZ-1*SZREG(sp) + + REG_ADDU sp,O32_FRAMESZ + jr ra +END(call_o32) diff --git a/arch/mips/fw/sni/Makefile b/arch/mips/fw/sni/Makefile new file mode 100644 index 0000000..d9740a3 --- /dev/null +++ b/arch/mips/fw/sni/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the SNI prom monitor routines under Linux. +# + +lib-$(CONFIG_SNIPROM) += sniprom.o diff --git a/arch/mips/fw/sni/sniprom.c b/arch/mips/fw/sni/sniprom.c new file mode 100644 index 0000000..96ba992 --- /dev/null +++ b/arch/mips/fw/sni/sniprom.c @@ -0,0 +1,151 @@ +/* + * Big Endian PROM code for SNI RM machines + * + * 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. + * + * Copyright (C) 2005-2006 Florian Lohoff (flo@rfc822.org) + * Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de) + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/string.h> +#include <linux/console.h> + +#include <asm/addrspace.h> +#include <asm/sni.h> +#include <asm/mipsprom.h> +#include <asm/mipsregs.h> +#include <asm/bootinfo.h> + +/* special SNI prom calls */ +/* + * This does not exist in all proms - SINIX compares + * the prom env variable "version" against "2.0008" + * or greater. If lesser it tries to probe interesting + * registers + */ +#define PROM_GET_MEMCONF 58 +#define PROM_GET_HWCONF 61 + +#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000) +#define PROM_ENTRY(x) (PROM_VEC + (x)) + +#define ___prom_putchar ((int *(*)(int))PROM_ENTRY(PROM_PUTCHAR)) +#define ___prom_getenv ((char *(*)(char *))PROM_ENTRY(PROM_GETENV)) +#define ___prom_get_memconf ((void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF)) +#define ___prom_get_hwconf ((u32 (*)(void))PROM_ENTRY(PROM_GET_HWCONF)) + +#ifdef CONFIG_64BIT + +static u8 o32_stk[16384]; +#define O32_STK &o32_stk[sizeof(o32_stk)] + +#define __PROM_O32(fun, arg) fun arg __asm__(#fun); \ + __asm__(#fun " = call_o32") + +int __PROM_O32(__prom_putchar, (int *(*)(int), void *, int)); +char *__PROM_O32(__prom_getenv, (char *(*)(char *), void *, char *)); +void __PROM_O32(__prom_get_memconf, (void (*)(void *), void *, void *)); +u32 __PROM_O32(__prom_get_hwconf, (u32 (*)(void), void *)); + +#define _prom_putchar(x) __prom_putchar(___prom_putchar, O32_STK, x) +#define _prom_getenv(x) __prom_getenv(___prom_getenv, O32_STK, x) +#define _prom_get_memconf(x) __prom_get_memconf(___prom_get_memconf, O32_STK, x) +#define _prom_get_hwconf() __prom_get_hwconf(___prom_get_hwconf, O32_STK) + +#else +#define _prom_putchar(x) ___prom_putchar(x) +#define _prom_getenv(x) ___prom_getenv(x) +#define _prom_get_memconf(x) ___prom_get_memconf(x) +#define _prom_get_hwconf(x) ___prom_get_hwconf(x) +#endif + +void prom_putchar(char c) +{ + _prom_putchar(c); +} + + +char *prom_getenv(char *s) +{ + return _prom_getenv(s); +} + +void *prom_get_hwconf(void) +{ + u32 hwconf = _prom_get_hwconf(); + + if (hwconf == 0xffffffff) + return NULL; + + return (void *)CKSEG1ADDR(hwconf); +} + +void __init prom_free_prom_memory(void) +{ +} + +/* + * /proc/cpuinfo system type + * + */ +char *system_type = "Unknown"; +const char *get_system_type(void) +{ + return system_type; +} + +static void __init sni_mem_init(void) +{ + int i, memsize; + struct membank { + u32 size; + u32 base; + u32 size2; + u32 pad1; + u32 pad2; + } memconf[8]; + int brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE; + + + /* MemSIZE from prom in 16MByte chunks */ + memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16; + + pr_debug("IDProm memsize: %u MByte\n", memsize); + + /* get memory bank layout from prom */ + _prom_get_memconf(&memconf); + + pr_debug("prom_get_mem_conf memory configuration:\n"); + for (i = 0; i < 8 && memconf[i].size; i++) { + if (brd_type == SNI_BRD_PCI_TOWER || + brd_type == SNI_BRD_PCI_TOWER_CPLUS) { + if (memconf[i].base >= 0x20000000 && + memconf[i].base < 0x30000000) + memconf[i].base -= 0x20000000; + } + pr_debug("Bank%d: %08x @ %08x\n", i, + memconf[i].size, memconf[i].base); + add_memory_region(memconf[i].base, memconf[i].size, + BOOT_MEM_RAM); + } +} + +void __init prom_init(void) +{ + int argc = fw_arg0; + u32 *argv = (u32 *)CKSEG0ADDR(fw_arg1); + int i; + + sni_mem_init(); + + /* copy prom cmdline parameters to kernel cmdline */ + for (i = 1; i < argc; i++) { + strcat(arcs_cmdline, (char *)CKSEG0ADDR(argv[i])); + if (i < (argc - 1)) + strcat(arcs_cmdline, " "); + } +} diff --git a/arch/mips/sni/Makefile b/arch/mips/sni/Makefile index 3a99cd6..a7dbeeb 100644 --- a/arch/mips/sni/Makefile +++ b/arch/mips/sni/Makefile @@ -3,6 +3,6 @@ # obj-y += irq.o reset.o setup.o a20r.o rm200.o pcimt.o pcit.o time.o -obj-$(CONFIG_CPU_BIG_ENDIAN) += sniprom.o +obj-$(CONFIG_EISA) += eisa.o EXTRA_CFLAGS += -Werror diff --git a/arch/mips/sni/a20r.c b/arch/mips/sni/a20r.c index b746075..3f8cf5e 100644 --- a/arch/mips/sni/a20r.c +++ b/arch/mips/sni/a20r.c @@ -117,10 +117,19 @@ static struct resource sc26xx_rsrc[] = { } }; +static unsigned int sc26xx_data[2] = { + /* DTR | RTS | DSR | CTS | DCD | RI */ + (8 << 0) | (4 << 4) | (6 << 8) | (0 << 12) | (6 << 16) | (0 << 20), + (3 << 0) | (2 << 4) | (1 << 8) | (2 << 12) | (3 << 16) | (4 << 20) +}; + static struct platform_device sc26xx_pdev = { .name = "SC26xx", .num_resources = ARRAY_SIZE(sc26xx_rsrc), - .resource = sc26xx_rsrc + .resource = sc26xx_rsrc, + .dev = { + .platform_data = sc26xx_data, + } }; static u32 a20r_ack_hwint(void) @@ -231,9 +240,9 @@ static int __init snirm_a20r_setup_devinit(void) platform_device_register(&sc26xx_pdev); platform_device_register(&a20r_serial8250_device); platform_device_register(&a20r_ds1216_device); + sni_eisa_root_init(); break; } - return 0; } diff --git a/arch/mips/sni/eisa.c b/arch/mips/sni/eisa.c new file mode 100644 index 0000000..7396cd7 --- /dev/null +++ b/arch/mips/sni/eisa.c @@ -0,0 +1,50 @@ +/* + * Virtual EISA root driver. + * Acts as a placeholder if we don't have a proper EISA bridge. + * + * (C) 2003 Marc Zyngier <maz@wild-wind.fr.eu.org> + * modified for SNI usage by Thomas Bogendoerfer + * + * This code is released under the GPL version 2. + */ + +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/eisa.h> +#include <linux/init.h> + +/* The default EISA device parent (virtual root device). + * Now use a platform device, since that's the obvious choice. */ + +static struct platform_device eisa_root_dev = { + .name = "eisa", + .id = 0, +}; + +static struct eisa_root_device eisa_bus_root = { + .dev = &eisa_root_dev.dev, + .bus_base_addr = 0, + .res = &ioport_resource, + .slots = EISA_MAX_SLOTS, + .dma_mask = 0xffffffff, + .force_probe = 1, +}; + +int __init sni_eisa_root_init(void) +{ + int r; + + r = platform_device_register(&eisa_root_dev); + if (!r) + return r; + + eisa_root_dev.dev.driver_data = &eisa_bus_root; + + if (eisa_root_register(&eisa_bus_root)) { + /* A real bridge may have been registered before + * us. So quietly unregister. */ + platform_device_unregister(&eisa_root_dev); + return -1; + } + return 0; +} diff --git a/arch/mips/sni/irq.c b/arch/mips/sni/irq.c index 9ccffdf..e8e72bb 100644 --- a/arch/mips/sni/irq.c +++ b/arch/mips/sni/irq.c @@ -35,14 +35,14 @@ static irqreturn_t sni_isa_irq_handler(int dummy, void *p) if (unlikely(irq < 0)) return IRQ_NONE; - do_IRQ(irq); + generic_handle_irq(irq); return IRQ_HANDLED; } struct irqaction sni_isa_irq = { .handler = sni_isa_irq_handler, .name = "ISA", - .flags = IRQF_SHARED + .flags = IRQF_SHARED | IRQF_DISABLED }; /* diff --git a/arch/mips/sni/rm200.c b/arch/mips/sni/rm200.c index 67b061e..5310aa7 100644 --- a/arch/mips/sni/rm200.c +++ b/arch/mips/sni/rm200.c @@ -5,30 +5,36 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de) + * Copyright (C) 2006,2007 Thomas Bogendoerfer (tsbogend@alpha.franken.de) + * + * i8259 parts ripped out of arch/mips/kernel/i8259.c */ +#include <linux/delay.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/platform_device.h> #include <linux/serial_8250.h> +#include <linux/io.h> #include <asm/sni.h> #include <asm/time.h> #include <asm/irq_cpu.h> -#define PORT(_base,_irq) \ +#define RM200_I8259A_IRQ_BASE 32 + +#define MEMPORT(_base,_irq) \ { \ - .iobase = _base, \ + .mapbase = _base, \ .irq = _irq, \ .uartclk = 1843200, \ - .iotype = UPIO_PORT, \ - .flags = UPF_BOOT_AUTOCONF, \ + .iotype = UPIO_MEM, \ + .flags = UPF_BOOT_AUTOCONF|UPF_IOREMAP, \ } static struct plat_serial8250_port rm200_data[] = { - PORT(0x3f8, 4), - PORT(0x2f8, 3), + MEMPORT(0x160003f8, RM200_I8259A_IRQ_BASE + 4), + MEMPORT(0x160002f8, RM200_I8259A_IRQ_BASE + 3), { }, }; @@ -112,15 +118,311 @@ static int __init snirm_setup_devinit(void) platform_device_register(&rm200_ds1216_device); platform_device_register(&snirm_82596_rm200_pdev); platform_device_register(&snirm_53c710_rm200_pdev); + sni_eisa_root_init(); } return 0; } device_initcall(snirm_setup_devinit); +/* + * RM200 has an ISA and an EISA bus. The iSA bus is only used + * for onboard devices and also has twi i8259 PICs. Since these + * PICs are no accessible via inb/outb the following code uses + * readb/writeb to access them + */ + +DEFINE_SPINLOCK(sni_rm200_i8259A_lock); +#define PIC_CMD 0x00 +#define PIC_IMR 0x01 +#define PIC_ISR PIC_CMD +#define PIC_POLL PIC_ISR +#define PIC_OCW3 PIC_ISR + +/* i8259A PIC related value */ +#define PIC_CASCADE_IR 2 +#define MASTER_ICW4_DEFAULT 0x01 +#define SLAVE_ICW4_DEFAULT 0x01 + +/* + * This contains the irq mask for both 8259A irq controllers, + */ +static unsigned int rm200_cached_irq_mask = 0xffff; +static __iomem u8 *rm200_pic_master; +static __iomem u8 *rm200_pic_slave; + +#define cached_master_mask (rm200_cached_irq_mask) +#define cached_slave_mask (rm200_cached_irq_mask >> 8) + +static void sni_rm200_disable_8259A_irq(unsigned int irq) +{ + unsigned int mask; + unsigned long flags; + + irq -= RM200_I8259A_IRQ_BASE; + mask = 1 << irq; + spin_lock_irqsave(&sni_rm200_i8259A_lock, flags); + rm200_cached_irq_mask |= mask; + if (irq & 8) + writeb(cached_slave_mask, rm200_pic_slave + PIC_IMR); + else + writeb(cached_master_mask, rm200_pic_master + PIC_IMR); + spin_unlock_irqrestore(&sni_rm200_i8259A_lock, flags); +} + +static void sni_rm200_enable_8259A_irq(unsigned int irq) +{ + unsigned int mask; + unsigned long flags; + + irq -= RM200_I8259A_IRQ_BASE; + mask = ~(1 << irq); + spin_lock_irqsave(&sni_rm200_i8259A_lock, flags); + rm200_cached_irq_mask &= mask; + if (irq & 8) + writeb(cached_slave_mask, rm200_pic_slave + PIC_IMR); + else + writeb(cached_master_mask, rm200_pic_master + PIC_IMR); + spin_unlock_irqrestore(&sni_rm200_i8259A_lock, flags); +} + +static inline int sni_rm200_i8259A_irq_real(unsigned int irq) +{ + int value; + int irqmask = 1 << irq; + + if (irq < 8) { + writeb(0x0B, rm200_pic_master + PIC_CMD); + value = readb(rm200_pic_master + PIC_CMD) & irqmask; + writeb(0x0A, rm200_pic_master + PIC_CMD); + return value; + } + writeb(0x0B, rm200_pic_slave + PIC_CMD); /* ISR register */ + value = readb(rm200_pic_slave + PIC_CMD) & (irqmask >> 8); + writeb(0x0A, rm200_pic_slave + PIC_CMD); + return value; +} + +/* + * Careful! The 8259A is a fragile beast, it pretty + * much _has_ to be done exactly like this (mask it + * first, _then_ send the EOI, and the order of EOI + * to the two 8259s is important! + */ +void sni_rm200_mask_and_ack_8259A(unsigned int irq) +{ + unsigned int irqmask; + unsigned long flags; + + irq -= RM200_I8259A_IRQ_BASE; + irqmask = 1 << irq; + spin_lock_irqsave(&sni_rm200_i8259A_lock, flags); + /* + * Lightweight spurious IRQ detection. We do not want + * to overdo spurious IRQ handling - it's usually a sign + * of hardware problems, so we only do the checks we can + * do without slowing down good hardware unnecessarily. + * + * Note that IRQ7 and IRQ15 (the two spurious IRQs + * usually resulting from the 8259A-1|2 PICs) occur + * even if the IRQ is masked in the 8259A. Thus we + * can check spurious 8259A IRQs without doing the + * quite slow i8259A_irq_real() call for every IRQ. + * This does not cover 100% of spurious interrupts, + * but should be enough to warn the user that there + * is something bad going on ... + */ + if (rm200_cached_irq_mask & irqmask) + goto spurious_8259A_irq; + rm200_cached_irq_mask |= irqmask; + +handle_real_irq: + if (irq & 8) { + readb(rm200_pic_slave + PIC_IMR); + writeb(cached_slave_mask, rm200_pic_slave + PIC_IMR); + writeb(0x60+(irq & 7), rm200_pic_slave + PIC_CMD); + writeb(0x60+PIC_CASCADE_IR, rm200_pic_master + PIC_CMD); + } else { + readb(rm200_pic_master + PIC_IMR); + writeb(cached_master_mask, rm200_pic_master + PIC_IMR); + writeb(0x60+irq, rm200_pic_master + PIC_CMD); + } + spin_unlock_irqrestore(&sni_rm200_i8259A_lock, flags); + return; + +spurious_8259A_irq: + /* + * this is the slow path - should happen rarely. + */ + if (sni_rm200_i8259A_irq_real(irq)) + /* + * oops, the IRQ _is_ in service according to the + * 8259A - not spurious, go handle it. + */ + goto handle_real_irq; + + { + static int spurious_irq_mask; + /* + * At this point we can be sure the IRQ is spurious, + * lets ACK and report it. [once per IRQ] + */ + if (!(spurious_irq_mask & irqmask)) { + printk(KERN_DEBUG + "spurious RM200 8259A interrupt: IRQ%d.\n", irq); + spurious_irq_mask |= irqmask; + } + atomic_inc(&irq_err_count); + /* + * Theoretically we do not have to handle this IRQ, + * but in Linux this does not cause problems and is + * simpler for us. + */ + goto handle_real_irq; + } +} + +static struct irq_chip sni_rm200_i8259A_chip = { + .name = "RM200-XT-PIC", + .mask = sni_rm200_disable_8259A_irq, + .unmask = sni_rm200_enable_8259A_irq, + .mask_ack = sni_rm200_mask_and_ack_8259A, +}; + +/* + * Do the traditional i8259 interrupt polling thing. This is for the few + * cases where no better interrupt acknowledge method is available and we + * absolutely must touch the i8259. + */ +static inline int sni_rm200_i8259_irq(void) +{ + int irq; + + spin_lock(&sni_rm200_i8259A_lock); + + /* Perform an interrupt acknowledge cycle on controller 1. */ + writeb(0x0C, rm200_pic_master + PIC_CMD); /* prepare for poll */ + irq = readb(rm200_pic_master + PIC_CMD) & 7; + if (irq == PIC_CASCADE_IR) { + /* + * Interrupt is cascaded so perform interrupt + * acknowledge on controller 2. + */ + writeb(0x0C, rm200_pic_slave + PIC_CMD); /* prepare for poll */ + irq = (readb(rm200_pic_slave + PIC_CMD) & 7) + 8; + } + + if (unlikely(irq == 7)) { + /* + * This may be a spurious interrupt. + * + * Read the interrupt status register (ISR). If the most + * significant bit is not set then there is no valid + * interrupt. + */ + writeb(0x0B, rm200_pic_master + PIC_ISR); /* ISR register */ + if (~readb(rm200_pic_master + PIC_ISR) & 0x80) + irq = -1; + } + + spin_unlock(&sni_rm200_i8259A_lock); + + return likely(irq >= 0) ? irq + RM200_I8259A_IRQ_BASE : irq; +} + +void sni_rm200_init_8259A(void) +{ + unsigned long flags; + + spin_lock_irqsave(&sni_rm200_i8259A_lock, flags); + + writeb(0xff, rm200_pic_master + PIC_IMR); + writeb(0xff, rm200_pic_slave + PIC_IMR); + + writeb(0x11, rm200_pic_master + PIC_CMD); + writeb(0, rm200_pic_master + PIC_IMR); + writeb(1U << PIC_CASCADE_IR, rm200_pic_master + PIC_IMR); + writeb(MASTER_ICW4_DEFAULT, rm200_pic_master + PIC_IMR); + writeb(0x11, rm200_pic_slave + PIC_CMD); + writeb(8, rm200_pic_slave + PIC_IMR); + writeb(PIC_CASCADE_IR, rm200_pic_slave + PIC_IMR); + writeb(SLAVE_ICW4_DEFAULT, rm200_pic_slave + PIC_IMR); + udelay(100); /* wait for 8259A to initialize */ + + writeb(cached_master_mask, rm200_pic_master + PIC_IMR); + writeb(cached_slave_mask, rm200_pic_slave + PIC_IMR); + + spin_unlock_irqrestore(&sni_rm200_i8259A_lock, flags); +} + +/* + * IRQ2 is cascade interrupt to second interrupt controller + */ +static struct irqaction sni_rm200_irq2 = { + no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL +}; + +static struct resource sni_rm200_pic1_resource = { + .name = "onboard ISA pic1", + .start = 0x16000020, + .end = 0x16000023, + .flags = IORESOURCE_BUSY +}; + +static struct resource sni_rm200_pic2_resource = { + .name = "onboard ISA pic2", + .start = 0x160000a0, + .end = 0x160000a3, + .flags = IORESOURCE_BUSY +}; + +/* ISA irq handler */ +static irqreturn_t sni_rm200_i8259A_irq_handler(int dummy, void *p) +{ + int irq; + + irq = sni_rm200_i8259_irq(); + if (unlikely(irq < 0)) + return IRQ_NONE; + + do_IRQ(irq); + return IRQ_HANDLED; +} + +struct irqaction sni_rm200_i8259A_irq = { + .handler = sni_rm200_i8259A_irq_handler, + .name = "onboard ISA", + .flags = IRQF_SHARED +}; + +void __init sni_rm200_i8259_irqs(void) +{ + int i; + + rm200_pic_master = ioremap_nocache(0x16000020, 4); + if (!rm200_pic_master) + return; + rm200_pic_slave = ioremap_nocache(0x160000a0, 4); + if (!rm200_pic_master) { + iounmap(rm200_pic_master); + return; + } + + insert_resource(&iomem_resource, &sni_rm200_pic1_resource); + insert_resource(&iomem_resource, &sni_rm200_pic2_resource); + + sni_rm200_init_8259A(); + + for (i = RM200_I8259A_IRQ_BASE; i < RM200_I8259A_IRQ_BASE + 16; i++) + set_irq_chip_and_handler(i, &sni_rm200_i8259A_chip, + handle_level_irq); + + setup_irq(RM200_I8259A_IRQ_BASE + PIC_CASCADE_IR, &sni_rm200_irq2); +} + -#define SNI_RM200_INT_STAT_REG 0xbc000000 -#define SNI_RM200_INT_ENA_REG 0xbc080000 +#define SNI_RM200_INT_STAT_REG CKSEG1ADDR(0xbc000000) +#define SNI_RM200_INT_ENA_REG CKSEG1ADDR(0xbc080000) #define SNI_RM200_INT_START 24 #define SNI_RM200_INT_END 28 @@ -181,17 +483,17 @@ void __init sni_rm200_irq_init(void) * (volatile u8 *)SNI_RM200_INT_ENA_REG = 0x1f; + sni_rm200_i8259_irqs(); mips_cpu_irq_init(); /* Actually we've got more interrupts to handle ... */ for (i = SNI_RM200_INT_START; i <= SNI_RM200_INT_END; i++) set_irq_chip(i, &rm200_irq_type); sni_hwint = sni_rm200_hwint; change_c0_status(ST0_IM, IE_IRQ0); - setup_irq(SNI_RM200_INT_START + 0, &sni_isa_irq); + setup_irq(SNI_RM200_INT_START + 0, &sni_rm200_i8259A_irq); + setup_irq(SNI_RM200_INT_START + 1, &sni_isa_irq); } void __init sni_rm200_init(void) { - set_io_port_base(SNI_PORT_BASE + 0x02000000); - ioport_resource.end += 0x02000000; } diff --git a/arch/mips/sni/setup.c b/arch/mips/sni/setup.c index e8b26bd..5484e1c 100644 --- a/arch/mips/sni/setup.c +++ b/arch/mips/sni/setup.c @@ -19,11 +19,17 @@ #include <asm/sgialib.h> #endif +#ifdef CONFIG_SNIPROM +#include <asm/mipsprom.h> +#endif + +#include <asm/bootinfo.h> #include <asm/io.h> #include <asm/reboot.h> #include <asm/sni.h> unsigned int sni_brd_type; +EXPORT_SYMBOL(sni_brd_type); extern void sni_machine_restart(char *command); extern void sni_machine_power_off(void); @@ -47,20 +53,152 @@ static void __init sni_display_setup(void) #endif } +static void __init sni_console_setup(void) +{ +#ifndef CONFIG_ARC + char *ctype; + char *cdev; + char *baud; + int port; + static char options[8]; + + cdev = prom_getenv("console_dev"); + if (strncmp(cdev, "tty", 3) == 0) { + ctype = prom_getenv("console"); + switch (*ctype) { + default: + case 'l': + port = 0; + baud = prom_getenv("lbaud"); + break; + case 'r': + port = 1; + baud = prom_getenv("rbaud"); + break; + } + if (baud) + strcpy(options, baud); + if (strncmp(cdev, "tty552", 6) == 0) + add_preferred_console("ttyS", port, + baud ? options : NULL); + else + add_preferred_console("ttySC", port, + baud ? options : NULL); + } +#endif +} + +#ifdef DEBUG +static void __init sni_idprom_dump(void) +{ + int i; + + pr_debug("SNI IDProm dump:\n"); + for (i = 0; i < 256; i++) { + if (i%16 == 0) + pr_debug("%04x ", i); + + printk("%02x ", *(unsigned char *) (SNI_IDPROM_BASE + i)); + + if (i % 16 == 15) + printk("\n"); + } +} +#endif void __init plat_mem_setup(void) { + int cputype; + set_io_port_base(SNI_PORT_BASE); // ioport_resource.end = sni_io_resource.end; /* * Setup (E)ISA I/O memory access stuff */ - isa_slot_offset = 0xb0000000; + isa_slot_offset = CKSEG1ADDR(0xb0000000); #ifdef CONFIG_EISA EISA_bus = 1; #endif + sni_brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE; + cputype = *(unsigned char *)SNI_IDPROM_CPUTYPE; + switch (sni_brd_type) { + case SNI_BRD_TOWER_OASIC: + switch (cputype) { + case SNI_CPU_M8030: + system_type = "RM400-330"; + break; + case SNI_CPU_M8031: + system_type = "RM400-430"; + break; + case SNI_CPU_M8037: + system_type = "RM400-530"; + break; + case SNI_CPU_M8034: + system_type = "RM400-730"; + break; + default: + system_type = "RM400-xxx"; + break; + } + break; + case SNI_BRD_MINITOWER: + switch (cputype) { + case SNI_CPU_M8021: + case SNI_CPU_M8043: + system_type = "RM400-120"; + break; + case SNI_CPU_M8040: + system_type = "RM400-220"; + break; + case SNI_CPU_M8053: + system_type = "RM400-225"; + break; + case SNI_CPU_M8050: + system_type = "RM400-420"; + break; + default: + system_type = "RM400-xxx"; + break; + } + break; + case SNI_BRD_PCI_TOWER: + system_type = "RM400-Cxx"; + break; + case SNI_BRD_RM200: + system_type = "RM200-xxx"; + break; + case SNI_BRD_PCI_MTOWER: + system_type = "RM300-Cxx"; + break; + case SNI_BRD_PCI_DESKTOP: + switch (read_c0_prid() & 0xff00) { + case PRID_IMP_R4600: + case PRID_IMP_R4700: + system_type = "RM200-C20"; + break; + case PRID_IMP_R5000: + system_type = "RM200-C40"; + break; + default: + system_type = "RM200-Cxx"; + break; + } + break; + case SNI_BRD_PCI_TOWER_CPLUS: + system_type = "RM400-Exx"; + break; + case SNI_BRD_PCI_MTOWER_CPLUS: + system_type = "RM300-Exx"; + break; + } + pr_debug("Found SNI brdtype %02x name %s\n", sni_brd_type, system_type); + +#ifdef DEBUG + sni_idprom_dump(); +#endif + switch (sni_brd_type) { case SNI_BRD_10: case SNI_BRD_10NEW: @@ -89,9 +227,10 @@ void __init plat_mem_setup(void) pm_power_off = sni_machine_power_off; sni_display_setup(); + sni_console_setup(); } -#if CONFIG_PCI +#ifdef CONFIG_PCI #include <linux/pci.h> #include <video/vga.h> diff --git a/arch/mips/sni/sniprom.c b/arch/mips/sni/sniprom.c deleted file mode 100644 index eff4b89..0000000 --- a/arch/mips/sni/sniprom.c +++ /dev/null @@ -1,251 +0,0 @@ -/* - * Big Endian PROM code for SNI RM machines - * - * 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. - * - * Copyright (C) 2005-2006 Florian Lohoff (flo@rfc822.org) - * Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de) - */ - -#define DEBUG - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/string.h> -#include <linux/console.h> - -#include <asm/addrspace.h> -#include <asm/sni.h> -#include <asm/mipsprom.h> -#include <asm/mipsregs.h> -#include <asm/bootinfo.h> - -/* special SNI prom calls */ -/* - * This does not exist in all proms - SINIX compares - * the prom env variable "version" against "2.0008" - * or greater. If lesser it tries to probe interesting - * registers - */ -#define PROM_GET_MEMCONF 58 - -#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000) -#define PROM_ENTRY(x) (PROM_VEC + (x)) - - -static int *(*__prom_putchar)(int) = (int *(*)(int))PROM_ENTRY(PROM_PUTCHAR); - -void prom_putchar(char c) -{ - __prom_putchar(c); -} - -static char *(*__prom_getenv)(char *) = (char *(*)(char *))PROM_ENTRY(PROM_GETENV); -static void (*__prom_get_memconf)(void *) = (void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF); - -char *prom_getenv(char *s) -{ - return __prom_getenv(s); -} - -void __init prom_free_prom_memory(void) -{ -} - -/* - * /proc/cpuinfo system type - * - */ -static const char *systype = "Unknown"; -const char *get_system_type(void) -{ - return systype; -} - -#define SNI_IDPROM_BASE 0xbff00000 -#define SNI_IDPROM_MEMSIZE (SNI_IDPROM_BASE+0x28) /* Memsize in 16MB quantities */ -#define SNI_IDPROM_BRDTYPE (SNI_IDPROM_BASE+0x29) /* Board Type */ -#define SNI_IDPROM_CPUTYPE (SNI_IDPROM_BASE+0x30) /* CPU Type */ - -#define SNI_IDPROM_SIZE 0x1000 - -#ifdef DEBUG -static void __init sni_idprom_dump(void) -{ - int i; - - pr_debug("SNI IDProm dump:\n"); - for (i = 0; i < 256; i++) { - if (i%16 == 0) - pr_debug("%04x ", i); - - printk("%02x ", *(unsigned char *) (SNI_IDPROM_BASE + i)); - - if (i % 16 == 15) - printk("\n"); - } -} -#endif - -static void __init sni_mem_init(void ) -{ - int i, memsize; - struct membank { - u32 size; - u32 base; - u32 size2; - u32 pad1; - u32 pad2; - } memconf[8]; - - /* MemSIZE from prom in 16MByte chunks */ - memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16; - - pr_debug("IDProm memsize: %lu MByte\n", memsize); - - /* get memory bank layout from prom */ - __prom_get_memconf(&memconf); - - pr_debug("prom_get_mem_conf memory configuration:\n"); - for (i = 0;i < 8 && memconf[i].size; i++) { - if (sni_brd_type == SNI_BRD_PCI_TOWER || - sni_brd_type == SNI_BRD_PCI_TOWER_CPLUS) { - if (memconf[i].base >= 0x20000000 && - memconf[i].base < 0x30000000) { - memconf[i].base -= 0x20000000; - } - } - pr_debug("Bank%d: %08x @ %08x\n", i, - memconf[i].size, memconf[i].base); - add_memory_region(memconf[i].base, memconf[i].size, BOOT_MEM_RAM); - } -} - -static void __init sni_console_setup(void) -{ - char *ctype; - char *cdev; - char *baud; - int port; - static char options[8]; - - cdev = prom_getenv("console_dev"); - if (strncmp (cdev, "tty", 3) == 0) { - ctype = prom_getenv("console"); - switch (*ctype) { - default: - case 'l': - port = 0; - baud = prom_getenv("lbaud"); - break; - case 'r': - port = 1; - baud = prom_getenv("rbaud"); - break; - } - if (baud) - strcpy(options, baud); - if (strncmp (cdev, "tty552", 6) == 0) - add_preferred_console("ttyS", port, baud ? options : NULL); - else - add_preferred_console("ttySC", port, baud ? options : NULL); - } -} - -void __init prom_init(void) -{ - int argc = fw_arg0; - char **argv = (void *)fw_arg1; - int i; - int cputype; - - sni_brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE; - cputype = *(unsigned char *)SNI_IDPROM_CPUTYPE; - switch (sni_brd_type) { - case SNI_BRD_TOWER_OASIC: - switch (cputype) { - case SNI_CPU_M8030: - systype = "RM400-330"; - break; - case SNI_CPU_M8031: - systype = "RM400-430"; - break; - case SNI_CPU_M8037: - systype = "RM400-530"; - break; - case SNI_CPU_M8034: - systype = "RM400-730"; - break; - default: - systype = "RM400-xxx"; - break; - } - break; - case SNI_BRD_MINITOWER: - switch (cputype) { - case SNI_CPU_M8021: - case SNI_CPU_M8043: - systype = "RM400-120"; - break; - case SNI_CPU_M8040: - systype = "RM400-220"; - break; - case SNI_CPU_M8053: - systype = "RM400-225"; - break; - case SNI_CPU_M8050: - systype = "RM400-420"; - break; - default: - systype = "RM400-xxx"; - break; - } - break; - case SNI_BRD_PCI_TOWER: - systype = "RM400-Cxx"; - break; - case SNI_BRD_RM200: - systype = "RM200-xxx"; - break; - case SNI_BRD_PCI_MTOWER: - systype = "RM300-Cxx"; - break; - case SNI_BRD_PCI_DESKTOP: - switch (read_c0_prid() & 0xff00) { - case PRID_IMP_R4600: - case PRID_IMP_R4700: - systype = "RM200-C20"; - break; - case PRID_IMP_R5000: - systype = "RM200-C40"; - break; - default: - systype = "RM200-Cxx"; - break; - } - break; - case SNI_BRD_PCI_TOWER_CPLUS: - systype = "RM400-Exx"; - break; - case SNI_BRD_PCI_MTOWER_CPLUS: - systype = "RM300-Exx"; - break; - } - pr_debug("Found SNI brdtype %02x name %s\n", sni_brd_type, systype); - -#ifdef DEBUG - sni_idprom_dump(); -#endif - sni_mem_init(); - sni_console_setup(); - - /* copy prom cmdline parameters to kernel cmdline */ - for (i = 1; i < argc; i++) { - strcat(arcs_cmdline, argv[i]); - if (i < (argc - 1)) - strcat(arcs_cmdline, " "); - } -} - diff --git a/arch/mips/sni/time.c b/arch/mips/sni/time.c index 6f339af..796e3ce 100644 --- a/arch/mips/sni/time.c +++ b/arch/mips/sni/time.c @@ -178,6 +178,7 @@ void __init plat_time_init(void) sni_a20r_timer_setup(); break; } + setup_pit_timer(); } unsigned long read_persistent_clock(void) |