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[MIPS] Support for several more SNI RM models.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Thomas Bogendoerfer
2006-12-28 18:22:32 +01:00
committed by Ralf Baechle
parent 5759906ca9
commit c066a32a89
17 changed files with 1875 additions and 396 deletions
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2
arch/mips/sni/Makefile
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@@ -2,7 +2,7 @@
# Makefile for the SNI specific part of the kernel
#
obj-y += irq.o pcimt_scache.o reset.o setup.o
obj-y += irq.o reset.o setup.o ds1216.o a20r.o rm200.o pcimt.o pcit.o time.o
obj-$(CONFIG_CPU_BIG_ENDIAN) += sniprom.o
EXTRA_AFLAGS := $(CFLAGS)

227
arch/mips/sni/a20r.c Normal file
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@@ -0,0 +1,227 @@
/*
* A20R specific code
*
* 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) 2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
*/
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <asm/sni.h>
#include <asm/time.h>
#include <asm/ds1216.h>
#define PORT(_base,_irq) \
{ \
.iobase = _base, \
.irq = _irq, \
.uartclk = 1843200, \
.iotype = UPIO_PORT, \
.flags = UPF_BOOT_AUTOCONF, \
}
static struct plat_serial8250_port a20r_data[] = {
PORT(0x3f8, 4),
PORT(0x2f8, 3),
{ },
};
static struct platform_device a20r_serial8250_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = a20r_data,
},
};
static struct resource snirm_82596_rsrc[] = {
{
.start = 0xb8000000,
.end = 0xb8000004,
.flags = IORESOURCE_MEM
},
{
.start = 0xb8010000,
.end = 0xb8010004,
.flags = IORESOURCE_MEM
},
{
.start = 0xbff00000,
.end = 0xbff00020,
.flags = IORESOURCE_MEM
},
{
.start = 22,
.end = 22,
.flags = IORESOURCE_IRQ
},
{
.flags = 0x01 /* 16bit mpu port access */
}
};
static struct platform_device snirm_82596_pdev = {
.name = "snirm_82596",
.num_resources = ARRAY_SIZE(snirm_82596_rsrc),
.resource = snirm_82596_rsrc
};
static struct resource snirm_53c710_rsrc[] = {
{
.start = 0xb9000000,
.end = 0xb90fffff,
.flags = IORESOURCE_MEM
},
{
.start = 19,
.end = 19,
.flags = IORESOURCE_IRQ
}
};
static struct platform_device snirm_53c710_pdev = {
.name = "snirm_53c710",
.num_resources = ARRAY_SIZE(snirm_53c710_rsrc),
.resource = snirm_53c710_rsrc
};
static struct resource sc26xx_rsrc[] = {
{
.start = 0xbc070000,
.end = 0xbc0700ff,
.flags = IORESOURCE_MEM
},
{
.start = 20,
.end = 20,
.flags = IORESOURCE_IRQ
}
};
static struct platform_device sc26xx_pdev = {
.name = "SC26xx",
.num_resources = ARRAY_SIZE(sc26xx_rsrc),
.resource = sc26xx_rsrc
};
static u32 a20r_ack_hwint(void)
{
u32 status = read_c0_status();
write_c0_status (status | 0x00010000);
asm volatile(
" .set push \n"
" .set noat \n"
" .set noreorder \n"
" lw $1, 0(%0) \n"
" sb $0, 0(%1) \n"
" sync \n"
" lb %1, 0(%1) \n"
" b 1f \n"
" ori %1, $1, 2 \n"
" .align 8 \n"
"1: \n"
" nop \n"
" sw %1, 0(%0) \n"
" sync \n"
" li %1, 0x20 \n"
"2: \n"
" nop \n"
" bnez %1,2b \n"
" addiu %1, -1 \n"
" sw $1, 0(%0) \n"
" sync \n"
".set pop \n"
:
: "Jr" (PCIMT_UCONF), "Jr" (0xbc000000));
write_c0_status(status);
return status;
}
static inline void unmask_a20r_irq(unsigned int irq)
{
set_c0_status(0x100 << (irq - SNI_A20R_IRQ_BASE));
irq_enable_hazard();
}
static inline void mask_a20r_irq(unsigned int irq)
{
clear_c0_status(0x100 << (irq - SNI_A20R_IRQ_BASE));
irq_disable_hazard();
}
static void end_a20r_irq(unsigned int irq)
{
if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
a20r_ack_hwint();
unmask_a20r_irq(irq);
}
}
static struct irq_chip a20r_irq_type = {
.typename = "A20R",
.ack = mask_a20r_irq,
.mask = mask_a20r_irq,
.mask_ack = mask_a20r_irq,
.unmask = unmask_a20r_irq,
.end = end_a20r_irq,
};
/*
* hwint 0 receive all interrupts
*/
static void a20r_hwint(void)
{
u32 cause, status;
int irq;
clear_c0_status (IE_IRQ0);
status = a20r_ack_hwint();
cause = read_c0_cause();
irq = ffs(((cause & status) >> 8) & 0xf8);
if (likely(irq > 0))
do_IRQ(SNI_A20R_IRQ_BASE + irq - 1);
set_c0_status(IE_IRQ0);
}
void __init sni_a20r_irq_init(void)
{
int i;
for (i = SNI_A20R_IRQ_BASE + 2 ; i < SNI_A20R_IRQ_BASE + 8; i++)
set_irq_chip(i, &a20r_irq_type);
sni_hwint = a20r_hwint;
change_c0_status(ST0_IM, IE_IRQ0);
setup_irq (SNI_A20R_IRQ_BASE + 3, &sni_isa_irq);
}
void sni_a20r_init(void)
{
ds1216_base = (volatile unsigned char *) SNI_DS1216_A20R_BASE;
rtc_mips_get_time = ds1216_get_cmos_time;
}
static int __init snirm_a20r_setup_devinit(void)
{
switch (sni_brd_type) {
case SNI_BRD_TOWER_OASIC:
case SNI_BRD_MINITOWER:
platform_device_register(&snirm_82596_pdev);
platform_device_register(&snirm_53c710_pdev);
platform_device_register(&sc26xx_pdev);
platform_device_register(&a20r_serial8250_device);
break;
}
return 0;
}
device_initcall(snirm_a20r_setup_devinit);

81
arch/mips/sni/ds1216.c Normal file
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@@ -0,0 +1,81 @@
#include <linux/bcd.h>
#include <linux/time.h>
#include <asm/ds1216.h>
volatile unsigned char *ds1216_base;
/*
* Read the 64 bit we'd like to have - It a series
* of 64 bits showing up in the LSB of the base register.
*
*/
static unsigned char *ds1216_read(void)
{
static unsigned char rdbuf[8];
unsigned char c;
int i, j;
for (i = 0; i < 8; i++) {
c = 0x0;
for (j = 0; j < 8; j++) {
c |= (*ds1216_base & 0x1) << j;
}
rdbuf[i] = c;
}
return rdbuf;
}
static void ds1216_switch_ds_to_clock(void)
{
unsigned char magic[] = {
0xc5, 0x3a, 0xa3, 0x5c, 0xc5, 0x3a, 0xa3, 0x5c
};
int i,j,c;
/* Reset magic pointer */
c = *ds1216_base;
/* Write 64 bit magic to DS1216 */
for (i = 0; i < 8; i++) {
c = magic[i];
for (j = 0; j < 8; j++) {
*ds1216_base = c;
c = c >> 1;
}
}
}
unsigned long ds1216_get_cmos_time(void)
{
unsigned char *rdbuf;
unsigned int year, month, date, hour, min, sec;
ds1216_switch_ds_to_clock();
rdbuf = ds1216_read();
sec = BCD2BIN(DS1216_SEC(rdbuf));
min = BCD2BIN(DS1216_MIN(rdbuf));
hour = BCD2BIN(DS1216_HOUR(rdbuf));
date = BCD2BIN(DS1216_DATE(rdbuf));
month = BCD2BIN(DS1216_MONTH(rdbuf));
year = BCD2BIN(DS1216_YEAR(rdbuf));
if (DS1216_1224(rdbuf) && DS1216_AMPM(rdbuf))
hour+=12;
if (year < 70)
year += 2000;
else
year += 1900;
return mktime(year, month, date, hour, min, sec);
}
int ds1216_set_rtc_mmss(unsigned long nowtime)
{
printk("ds1216_set_rtc_mmss called but not implemented\n");
return -1;
}

190
arch/mips/sni/irq.c
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@@ -5,6 +5,7 @@
*
* Copyright (C) 1992 Linus Torvalds
* Copyright (C) 1994 - 2000 Ralf Baechle
* Copyright (C) 2006 Thomas Bogendoerfer
*/
#include <linux/delay.h>
#include <linux/init.h>
@@ -15,153 +16,35 @@
#include <asm/i8259.h>
#include <asm/io.h>
#include <asm/sni.h>
#include <asm/irq.h>
#include <asm/irq_cpu.h>
static void enable_pciasic_irq(unsigned int irq)
{
unsigned int mask = 1 << (irq - PCIMT_IRQ_INT2);
*(volatile u8 *) PCIMT_IRQSEL |= mask;
}
void disable_pciasic_irq(unsigned int irq)
{
unsigned int mask = ~(1 << (irq - PCIMT_IRQ_INT2));
*(volatile u8 *) PCIMT_IRQSEL &= mask;
}
static void end_pciasic_irq(unsigned int irq)
{
if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
enable_pciasic_irq(irq);
}
static struct irq_chip pciasic_irq_type = {
.name = "ASIC-PCI",
.ack = disable_pciasic_irq,
.mask = disable_pciasic_irq,
.mask_ack = disable_pciasic_irq,
.unmask = enable_pciasic_irq,
.end = end_pciasic_irq,
};
/*
* hwint0 should deal with MP agent, ASIC PCI, EISA NMI and debug
* button interrupts. Later ...
*/
static void pciasic_hwint0(void)
{
panic("Received int0 but no handler yet ...");
}
/* This interrupt was used for the com1 console on the first prototypes. */
static void pciasic_hwint2(void)
{
/* I think this shouldn't happen on production machines. */
panic("hwint2 and no handler yet");
}
/* hwint5 is the r4k count / compare interrupt */
static void pciasic_hwint5(void)
{
panic("hwint5 and no handler yet");
}
static unsigned int ls1bit8(unsigned int x)
{
int b = 7, s;
s = 4; if ((x & 0x0f) == 0) s = 0; b -= s; x <<= s;
s = 2; if ((x & 0x30) == 0) s = 0; b -= s; x <<= s;
s = 1; if ((x & 0x40) == 0) s = 0; b -= s;
return b;
}
/*
* hwint 1 deals with EISA and SCSI interrupts,
*
* The EISA_INT bit in CSITPEND is high active, all others are low active.
*/
static void pciasic_hwint1(void)
{
u8 pend = *(volatile char *)PCIMT_CSITPEND;
unsigned long flags;
if (pend & IT_EISA) {
int irq;
/*
* Note: ASIC PCI's builtin interrupt achknowledge feature is
* broken. Using it may result in loss of some or all i8259
* interupts, so don't use PCIMT_INT_ACKNOWLEDGE ...
*/
irq = i8259_irq();
if (unlikely(irq < 0))
return;
do_IRQ(irq);
}
if (!(pend & IT_SCSI)) {
flags = read_c0_status();
clear_c0_status(ST0_IM);
do_IRQ(PCIMT_IRQ_SCSI);
write_c0_status(flags);
}
}
/*
* hwint 3 should deal with the PCI A - D interrupts,
*/
static void pciasic_hwint3(void)
{
u8 pend = *(volatile char *)PCIMT_CSITPEND;
int irq;
pend &= (IT_INTA | IT_INTB | IT_INTC | IT_INTD);
clear_c0_status(IE_IRQ3);
irq = PCIMT_IRQ_INT2 + ls1bit8(pend);
do_IRQ(irq);
set_c0_status(IE_IRQ3);
}
/*
* hwint 4 is used for only the onboard PCnet 32.
*/
static void pciasic_hwint4(void)
{
clear_c0_status(IE_IRQ4);
do_IRQ(PCIMT_IRQ_ETHERNET);
set_c0_status(IE_IRQ4);
}
void (*sni_hwint)(void);
asmlinkage void plat_irq_dispatch(void)
{
unsigned int pending = read_c0_status() & read_c0_cause();
static unsigned char led_cache;
*(volatile unsigned char *) PCIMT_CSLED = ++led_cache;
if (pending & 0x0800)
pciasic_hwint1();
else if (pending & 0x4000)
pciasic_hwint4();
else if (pending & 0x2000)
pciasic_hwint3();
else if (pending & 0x1000)
pciasic_hwint2();
else if (pending & 0x8000)
pciasic_hwint5();
else if (pending & 0x0400)
pciasic_hwint0();
sni_hwint();
}
void __init init_pciasic(void)
/* ISA irq handler */
static irqreturn_t sni_isa_irq_handler(int dummy, void *p)
{
* (volatile u8 *) PCIMT_IRQSEL =
IT_EISA | IT_INTA | IT_INTB | IT_INTC | IT_INTD;
int irq;
irq = i8259_irq();
if (unlikely(irq < 0))
return IRQ_NONE;
do_IRQ(irq);
return IRQ_HANDLED;
}
struct irqaction sni_isa_irq = {
.handler = sni_isa_irq_handler,
.name = "ISA",
.flags = SA_SHIRQ
};
/*
* On systems with i8259-style interrupt controllers we assume for
* driver compatibility reasons interrupts 0 - 15 to be the i8295
@@ -169,14 +52,31 @@ void __init init_pciasic(void)
*/
void __init arch_init_irq(void)
{
int i;
init_i8259_irqs(); /* Integrated i8259 */
init_pciasic();
switch (sni_brd_type) {
case SNI_BRD_10:
case SNI_BRD_10NEW:
case SNI_BRD_TOWER_OASIC:
case SNI_BRD_MINITOWER:
sni_a20r_irq_init();
break;
/* Actually we've got more interrupts to handle ... */
for (i = PCIMT_IRQ_INT2; i <= PCIMT_IRQ_ETHERNET; i++)
set_irq_chip(i, &pciasic_irq_type);
case SNI_BRD_PCI_TOWER:
sni_pcit_irq_init();
break;
change_c0_status(ST0_IM, IE_IRQ1|IE_IRQ2|IE_IRQ3|IE_IRQ4);
case SNI_BRD_PCI_TOWER_CPLUS:
sni_pcit_cplus_irq_init();
break;
case SNI_BRD_RM200:
sni_rm200_irq_init();
break;
case SNI_BRD_PCI_MTOWER:
case SNI_BRD_PCI_DESKTOP:
case SNI_BRD_PCI_MTOWER_CPLUS:
sni_pcimt_irq_init();
break;
}
}

390
arch/mips/sni/pcimt.c Normal file
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@@ -0,0 +1,390 @@
/*
* PCIMT specific code
*
* 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) 1996, 97, 98, 2000, 03, 04, 06 Ralf Baechle (ralf@linux-mips.org)
* Copyright (C) 2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
*/
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/serial_8250.h>
#include <asm/mc146818-time.h>
#include <asm/sni.h>
#include <asm/time.h>
#include <asm/i8259.h>
#include <asm/irq_cpu.h>
#define cacheconf (*(volatile unsigned int *)PCIMT_CACHECONF)
#define invspace (*(volatile unsigned int *)PCIMT_INVSPACE)
static void __init sni_pcimt_sc_init(void)
{
unsigned int scsiz, sc_size;
scsiz = cacheconf & 7;
if (scsiz == 0) {
printk("Second level cache is deactived.\n");
return;
}
if (scsiz >= 6) {
printk("Invalid second level cache size configured, "
"deactivating second level cache.\n");
cacheconf = 0;
return;
}
sc_size = 128 << scsiz;
printk("%dkb second level cache detected, deactivating.\n", sc_size);
cacheconf = 0;
}
/*
* A bit more gossip about the iron we're running on ...
*/
static inline void sni_pcimt_detect(void)
{
char boardtype[80];
unsigned char csmsr;
char *p = boardtype;
unsigned int asic;
csmsr = *(volatile unsigned char *)PCIMT_CSMSR;
p += sprintf(p, "%s PCI", (csmsr & 0x80) ? "RM200" : "RM300");
if ((csmsr & 0x80) == 0)
p += sprintf(p, ", board revision %s",
(csmsr & 0x20) ? "D" : "C");
asic = csmsr & 0x80;
asic = (csmsr & 0x08) ? asic : !asic;
p += sprintf(p, ", ASIC PCI Rev %s", asic ? "1.0" : "1.1");
printk("%s.\n", boardtype);
}
#define PORT(_base,_irq) \
{ \
.iobase = _base, \
.irq = _irq, \
.uartclk = 1843200, \
.iotype = UPIO_PORT, \
.flags = UPF_BOOT_AUTOCONF, \
}
static struct plat_serial8250_port pcimt_data[] = {
PORT(0x3f8, 4),
PORT(0x2f8, 3),
{ },
};
static struct platform_device pcimt_serial8250_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = pcimt_data,
},
};
static struct resource sni_io_resource = {
.start = 0x00001000UL,
.end = 0x03bfffffUL,
.name = "PCIMT IO MEM",
.flags = IORESOURCE_IO,
};
static struct resource pcimt_io_resources[] = {
{
.start = 0x00,
.end = 0x1f,
.name = "dma1",
.flags = IORESOURCE_BUSY
}, {
.start = 0x40,
.end = 0x5f,
.name = "timer",
.flags = IORESOURCE_BUSY
}, {
.start = 0x60,
.end = 0x6f,
.name = "keyboard",
.flags = IORESOURCE_BUSY
}, {
.start = 0x80,
.end = 0x8f,
.name = "dma page reg",
.flags = IORESOURCE_BUSY
}, {
.start = 0xc0,
.end = 0xdf,
.name = "dma2",
.flags = IORESOURCE_BUSY
}, {
.start = 0xcfc,
.end = 0xcff,
.name = "PCI config data",
.flags = IORESOURCE_BUSY
}
};
static struct resource sni_mem_resource = {
.start = 0x10000000UL,
.end = 0xffffffffUL,
.name = "PCIMT PCI MEM",
.flags = IORESOURCE_MEM
};
/*
* The RM200/RM300 has a few holes in it's PCI/EISA memory address space used
* for other purposes. Be paranoid and allocate all of the before the PCI
* code gets a chance to to map anything else there ...
*
* This leaves the following areas available:
*
* 0x10000000 - 0x1009ffff (640kB) PCI/EISA/ISA Bus Memory
* 0x10100000 - 0x13ffffff ( 15MB) PCI/EISA/ISA Bus Memory
* 0x18000000 - 0x1fbfffff (124MB) PCI/EISA Bus Memory
* 0x1ff08000 - 0x1ffeffff (816kB) PCI/EISA Bus Memory
* 0xa0000000 - 0xffffffff (1.5GB) PCI/EISA Bus Memory
*/
static struct resource pcimt_mem_resources[] = {
{
.start = 0x100a0000,
.end = 0x100bffff,
.name = "Video RAM area",
.flags = IORESOURCE_BUSY
}, {
.start = 0x100c0000,
.end = 0x100fffff,
.name = "ISA Reserved",
.flags = IORESOURCE_BUSY
}, {
.start = 0x14000000,
.end = 0x17bfffff,
.name = "PCI IO",
.flags = IORESOURCE_BUSY
}, {
.start = 0x17c00000,
.end = 0x17ffffff,
.name = "Cache Replacement Area",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1a000000,
.end = 0x1a000003,
.name = "PCI INT Acknowledge",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fc00000,
.end = 0x1fc7ffff,
.name = "Boot PROM",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fc80000,
.end = 0x1fcfffff,
.name = "Diag PROM",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fd00000,
.end = 0x1fdfffff,
.name = "X-Bus",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fe00000,
.end = 0x1fefffff,
.name = "BIOS map",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1ff00000,
.end = 0x1ff7ffff,
.name = "NVRAM / EEPROM",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fff0000,
.end = 0x1fffefff,
.name = "ASIC PCI",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1ffff000,
.end = 0x1fffffff,
.name = "MP Agent",
.flags = IORESOURCE_BUSY
}, {
.start = 0x20000000,
.end = 0x9fffffff,
.name = "Main Memory",
.flags = IORESOURCE_BUSY
}
};
static void __init sni_pcimt_resource_init(void)
{
int i;
/* request I/O space for devices used on all i[345]86 PCs */
for (i = 0; i < ARRAY_SIZE(pcimt_io_resources); i++)
request_resource(&ioport_resource, pcimt_io_resources + i);
/* request mem space for pcimt-specific devices */
for (i = 0; i < ARRAY_SIZE(pcimt_mem_resources); i++)
request_resource(&sni_mem_resource, pcimt_mem_resources + i);
ioport_resource.end = sni_io_resource.end;
}
extern struct pci_ops sni_pcimt_ops;
static struct pci_controller sni_controller = {
.pci_ops = &sni_pcimt_ops,
.mem_resource = &sni_mem_resource,
.mem_offset = 0x10000000UL,
.io_resource = &sni_io_resource,
.io_offset = 0x00000000UL
};
static void enable_pcimt_irq(unsigned int irq)
{
unsigned int mask = 1 << (irq - PCIMT_IRQ_INT2);
*(volatile u8 *) PCIMT_IRQSEL |= mask;
}
void disable_pcimt_irq(unsigned int irq)
{
unsigned int mask = ~(1 << (irq - PCIMT_IRQ_INT2));
*(volatile u8 *) PCIMT_IRQSEL &= mask;
}
static void end_pcimt_irq(unsigned int irq)
{
if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
enable_pcimt_irq(irq);
}
static struct irq_chip pcimt_irq_type = {
.typename = "PCIMT",
.ack = disable_pcimt_irq,
.mask = disable_pcimt_irq,
.mask_ack = disable_pcimt_irq,
.unmask = enable_pcimt_irq,
.end = end_pcimt_irq,
};
/*
* hwint0 should deal with MP agent, ASIC PCI, EISA NMI and debug
* button interrupts. Later ...
*/
static void pcimt_hwint0(void)
{
panic("Received int0 but no handler yet ...");
}
/*
* hwint 1 deals with EISA and SCSI interrupts,
*
* The EISA_INT bit in CSITPEND is high active, all others are low active.
*/
static void pcimt_hwint1(void)
{
u8 pend = *(volatile char *)PCIMT_CSITPEND;
unsigned long flags;
if (pend & IT_EISA) {
int irq;
/*
* Note: ASIC PCI's builtin interrupt achknowledge feature is
* broken. Using it may result in loss of some or all i8259
* interupts, so don't use PCIMT_INT_ACKNOWLEDGE ...
*/
irq = i8259_irq();
if (unlikely(irq < 0))
return;
do_IRQ(irq);
}
if (!(pend & IT_SCSI)) {
flags = read_c0_status();
clear_c0_status(ST0_IM);
do_IRQ(PCIMT_IRQ_SCSI);
write_c0_status(flags);
}
}
/*
* hwint 3 should deal with the PCI A - D interrupts,
*/
static void pcimt_hwint3(void)
{
u8 pend = *(volatile char *)PCIMT_CSITPEND;
int irq;
pend &= (IT_INTA | IT_INTB | IT_INTC | IT_INTD);
pend ^= (IT_INTA | IT_INTB | IT_INTC | IT_INTD);
clear_c0_status(IE_IRQ3);
irq = PCIMT_IRQ_INT2 + ffs(pend) - 1;
do_IRQ(irq);
set_c0_status(IE_IRQ3);
}
static void sni_pcimt_hwint(void)
{
u32 pending = (read_c0_cause() & read_c0_status());
if (pending & C_IRQ5)
do_IRQ (SNI_MIPS_IRQ_CPU_BASE + 7);
else if (pending & C_IRQ4)
do_IRQ (SNI_MIPS_IRQ_CPU_BASE + 6);
else if (pending & C_IRQ3)
pcimt_hwint3();
else if (pending & C_IRQ1)
pcimt_hwint1();
else if (pending & C_IRQ0) {
pcimt_hwint0();
}
}
void __init sni_pcimt_irq_init(void)
{
int i;
*(volatile u8 *) PCIMT_IRQSEL = IT_ETH | IT_EISA;
mips_cpu_irq_init();
/* Actually we've got more interrupts to handle ... */
for (i = PCIMT_IRQ_INT2; i <= PCIMT_IRQ_SCSI; i++)
set_irq_chip(i, &pcimt_irq_type);
sni_hwint = sni_pcimt_hwint;
change_c0_status(ST0_IM, IE_IRQ1|IE_IRQ3);
}
void sni_pcimt_init(void)
{
sni_pcimt_resource_init();
sni_pcimt_detect();
sni_pcimt_sc_init();
rtc_mips_get_time = mc146818_get_cmos_time;
rtc_mips_set_time = mc146818_set_rtc_mmss;
board_time_init = sni_cpu_time_init;
#ifdef CONFIG_PCI
register_pci_controller(&sni_controller);
#endif
}
static int __init snirm_pcimt_setup_devinit(void)
{
switch (sni_brd_type) {
case SNI_BRD_PCI_MTOWER:
case SNI_BRD_PCI_DESKTOP:
case SNI_BRD_PCI_MTOWER_CPLUS:
platform_device_register(&pcimt_serial8250_device);
break;
}
return 0;
}
device_initcall(snirm_pcimt_setup_devinit);

351
arch/mips/sni/pcit.c Normal file
View File

@@ -0,0 +1,351 @@
/*
* PCI Tower specific code
*
* 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) 2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
*/
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/serial_8250.h>
#include <asm/mc146818-time.h>
#include <asm/sni.h>
#include <asm/time.h>
#include <asm/irq_cpu.h>
#define PORT(_base,_irq) \
{ \
.iobase = _base, \
.irq = _irq, \
.uartclk = 1843200, \
.iotype = UPIO_PORT, \
.flags = UPF_BOOT_AUTOCONF, \
}
static struct plat_serial8250_port pcit_data[] = {
PORT(0x3f8, 0),
PORT(0x2f8, 3),
{ },
};
static struct platform_device pcit_serial8250_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = pcit_data,
},
};
static struct plat_serial8250_port pcit_cplus_data[] = {
PORT(0x3f8, 4),
PORT(0x2f8, 3),
PORT(0x3e8, 4),
PORT(0x2e8, 3),
{ },
};
static struct platform_device pcit_cplus_serial8250_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = pcit_cplus_data,
},
};
static struct resource sni_io_resource = {
.start = 0x00001000UL,
.end = 0x03bfffffUL,
.name = "PCIT IO MEM",
.flags = IORESOURCE_IO,
};
static struct resource pcit_io_resources[] = {
{
.start = 0x00,
.end = 0x1f,
.name = "dma1",
.flags = IORESOURCE_BUSY
}, {
.start = 0x40,
.end = 0x5f,
.name = "timer",
.flags = IORESOURCE_BUSY
}, {
.start = 0x60,
.end = 0x6f,
.name = "keyboard",
.flags = IORESOURCE_BUSY
}, {
.start = 0x80,
.end = 0x8f,
.name = "dma page reg",
.flags = IORESOURCE_BUSY
}, {
.start = 0xc0,
.end = 0xdf,
.name = "dma2",
.flags = IORESOURCE_BUSY
}, {
.start = 0xcfc,
.end = 0xcff,
.name = "PCI config data",
.flags = IORESOURCE_BUSY
}
};
static struct resource sni_mem_resource = {
.start = 0x10000000UL,
.end = 0xffffffffUL,
.name = "PCIT PCI MEM",
.flags = IORESOURCE_MEM
};
/*
* The RM200/RM300 has a few holes in it's PCI/EISA memory address space used
* for other purposes. Be paranoid and allocate all of the before the PCI
* code gets a chance to to map anything else there ...
*
* This leaves the following areas available:
*
* 0x10000000 - 0x1009ffff (640kB) PCI/EISA/ISA Bus Memory
* 0x10100000 - 0x13ffffff ( 15MB) PCI/EISA/ISA Bus Memory
* 0x18000000 - 0x1fbfffff (124MB) PCI/EISA Bus Memory
* 0x1ff08000 - 0x1ffeffff (816kB) PCI/EISA Bus Memory
* 0xa0000000 - 0xffffffff (1.5GB) PCI/EISA Bus Memory
*/
static struct resource pcit_mem_resources[] = {
{
.start = 0x14000000,
.end = 0x17bfffff,
.name = "PCI IO",
.flags = IORESOURCE_BUSY
}, {
.start = 0x17c00000,
.end = 0x17ffffff,
.name = "Cache Replacement Area",
.flags = IORESOURCE_BUSY
}, {
.start = 0x180a0000,
.end = 0x180bffff,
.name = "Video RAM area",
.flags = IORESOURCE_BUSY
}, {
.start = 0x180c0000,
.end = 0x180fffff,
.name = "ISA Reserved",
.flags = IORESOURCE_BUSY
}, {
.start = 0x19000000,
.end = 0x1fbfffff,
.name = "PCI MEM",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fc00000,
.end = 0x1fc7ffff,
.name = "Boot PROM",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fc80000,
.end = 0x1fcfffff,
.name = "Diag PROM",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fd00000,
.end = 0x1fdfffff,
.name = "X-Bus",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fe00000,
.end = 0x1fefffff,
.name = "BIOS map",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1ff00000,
.end = 0x1ff7ffff,
.name = "NVRAM / EEPROM",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fff0000,
.end = 0x1fffefff,
.name = "MAUI ASIC",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1ffff000,
.end = 0x1fffffff,
.name = "MP Agent",
.flags = IORESOURCE_BUSY
}, {
.start = 0x20000000,
.end = 0x9fffffff,
.name = "Main Memory",
.flags = IORESOURCE_BUSY
}
};
static void __init sni_pcit_resource_init(void)
{
int i;
/* request I/O space for devices used on all i[345]86 PCs */
for (i = 0; i < ARRAY_SIZE(pcit_io_resources); i++)
request_resource(&ioport_resource, pcit_io_resources + i);
/* request mem space for pcimt-specific devices */
for (i = 0; i < ARRAY_SIZE(pcit_mem_resources); i++)
request_resource(&sni_mem_resource, pcit_mem_resources + i);
ioport_resource.end = sni_io_resource.end;
}
extern struct pci_ops sni_pcit_ops;
static struct pci_controller sni_pcit_controller = {
.pci_ops = &sni_pcit_ops,
.mem_resource = &sni_mem_resource,
.mem_offset = 0x10000000UL,
.io_resource = &sni_io_resource,
.io_offset = 0x00000000UL
};
static void enable_pcit_irq(unsigned int irq)
{
u32 mask = 1 << (irq - SNI_PCIT_INT_START + 24);
*(volatile u32 *)SNI_PCIT_INT_REG |= mask;
}
void disable_pcit_irq(unsigned int irq)
{
u32 mask = 1 << (irq - SNI_PCIT_INT_START + 24);
*(volatile u32 *)SNI_PCIT_INT_REG &= ~mask;
}
void end_pcit_irq(unsigned int irq)
{
if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
enable_pcit_irq(irq);
}
static struct irq_chip pcit_irq_type = {
.typename = "PCIT",
.ack = disable_pcit_irq,
.mask = disable_pcit_irq,
.mask_ack = disable_pcit_irq,
.unmask = enable_pcit_irq,
.end = end_pcit_irq,
};
static void pcit_hwint1(void)
{
u32 pending = *(volatile u32 *)SNI_PCIT_INT_REG;
int irq;
clear_c0_status(IE_IRQ1);
irq = ffs((pending >> 16) & 0x7f);
if (likely(irq > 0))
do_IRQ (irq + SNI_PCIT_INT_START - 1);
set_c0_status (IE_IRQ1);
}
static void pcit_hwint0(void)
{
u32 pending = *(volatile u32 *)SNI_PCIT_INT_REG;
int irq;
clear_c0_status(IE_IRQ0);
irq = ffs((pending >> 16) & 0x7f);
if (likely(irq > 0))
do_IRQ (irq + SNI_PCIT_INT_START - 1);
set_c0_status (IE_IRQ0);
}
static void sni_pcit_hwint(void)
{
u32 pending = (read_c0_cause() & read_c0_status());
if (pending & C_IRQ1)
pcit_hwint1();
else if (pending & C_IRQ2)
do_IRQ (SNI_MIPS_IRQ_CPU_BASE + 4);
else if (pending & C_IRQ3)
do_IRQ (SNI_MIPS_IRQ_CPU_BASE + 5);
else if (pending & C_IRQ5)
do_IRQ (SNI_MIPS_IRQ_CPU_BASE + 7);
}
static void sni_pcit_hwint_cplus(void)
{
u32 pending = (read_c0_cause() & read_c0_status());
if (pending & C_IRQ0)
pcit_hwint0();
else if (pending & C_IRQ2)
do_IRQ (SNI_MIPS_IRQ_CPU_BASE + 4);
else if (pending & C_IRQ3)
do_IRQ (SNI_MIPS_IRQ_CPU_BASE + 5);
else if (pending & C_IRQ5)
do_IRQ (SNI_MIPS_IRQ_CPU_BASE + 7);
}
void __init sni_pcit_irq_init(void)
{
int i;
mips_cpu_irq_init();
for (i = SNI_PCIT_INT_START; i <= SNI_PCIT_INT_END; i++)
set_irq_chip(i, &pcit_irq_type);
*(volatile u32 *)SNI_PCIT_INT_REG = 0;
sni_hwint = sni_pcit_hwint;
change_c0_status(ST0_IM, IE_IRQ1);
setup_irq (SNI_PCIT_INT_START + 6, &sni_isa_irq);
}
void __init sni_pcit_cplus_irq_init(void)
{
int i;
mips_cpu_irq_init();
for (i = SNI_PCIT_INT_START; i <= SNI_PCIT_INT_END; i++)
set_irq_chip(i, &pcit_irq_type);
*(volatile u32 *)SNI_PCIT_INT_REG = 0;
sni_hwint = sni_pcit_hwint_cplus;
change_c0_status(ST0_IM, IE_IRQ0);
setup_irq (SNI_PCIT_INT_START + 6, &sni_isa_irq);
}
void sni_pcit_init(void)
{
sni_pcit_resource_init();
rtc_mips_get_time = mc146818_get_cmos_time;
rtc_mips_set_time = mc146818_set_rtc_mmss;
board_time_init = sni_cpu_time_init;
#ifdef CONFIG_PCI
register_pci_controller(&sni_pcit_controller);
#endif
}
static int __init snirm_pcit_setup_devinit(void)
{
switch (sni_brd_type) {
case SNI_BRD_PCI_TOWER:
platform_device_register(&pcit_serial8250_device);
break;
case SNI_BRD_PCI_TOWER_CPLUS:
platform_device_register(&pcit_cplus_serial8250_device);
break;
}
return 0;
}
device_initcall(snirm_pcit_setup_devinit);

9
arch/mips/sni/reset.c
View File

@@ -13,12 +13,11 @@
* controller to pulse the reset-line low. We try that for a while,
* and if it doesn't work, we do some other stupid things.
*/
static inline void
kb_wait(void)
static inline void kb_wait(void)
{
int i;
for (i=0; i<0x10000; i++)
for (i = 0; i < 0x10000; i++)
if ((inb_p(0x64) & 0x02) == 0)
break;
}
@@ -32,9 +31,9 @@ void sni_machine_restart(char *command)
We can do that easier ... */
local_irq_disable();
for (;;) {
for (i=0; i<100; i++) {
for (i = 0; i < 100; i++) {
kb_wait();
for(j = 0; j < 100000 ; j++)
for (j = 0; j < 100000 ; j++)
/* nothing */;
outb_p(0xfe,0x64); /* pulse reset low */
}

186
arch/mips/sni/rm200.c Normal file
View File

@@ -0,0 +1,186 @@
/*
* RM200 specific code
*
* 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) 2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
*/
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <asm/sni.h>
#include <asm/time.h>
#include <asm/ds1216.h>
#include <asm/irq_cpu.h>
#define PORT(_base,_irq) \
{ \
.iobase = _base, \
.irq = _irq, \
.uartclk = 1843200, \
.iotype = UPIO_PORT, \
.flags = UPF_BOOT_AUTOCONF, \
}
static struct plat_serial8250_port rm200_data[] = {
PORT(0x3f8, 4),
PORT(0x2f8, 3),
{ },
};
static struct platform_device rm200_serial8250_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = rm200_data,
},
};
static struct resource snirm_82596_rm200_rsrc[] = {
{
.start = 0xb8000000,
.end = 0xb80fffff,
.flags = IORESOURCE_MEM
},
{
.start = 0xbb000000,
.end = 0xbb000004,
.flags = IORESOURCE_MEM
},
{
.start = 0xbff00000,
.end = 0xbff00020,
.flags = IORESOURCE_MEM
},
{
.start = 27,
.end = 27,
.flags = IORESOURCE_IRQ
},
{
.flags = 0x00
}
};
static struct platform_device snirm_82596_rm200_pdev = {
.name = "snirm_82596",
.num_resources = ARRAY_SIZE(snirm_82596_rm200_rsrc),
.resource = snirm_82596_rm200_rsrc
};
static struct resource snirm_53c710_rm200_rsrc[] = {
{
.start = 0xb9000000,
.end = 0xb90fffff,
.flags = IORESOURCE_MEM
},
{
.start = 26,
.end = 26,
.flags = IORESOURCE_IRQ
}
};
static struct platform_device snirm_53c710_rm200_pdev = {
.name = "snirm_53c710",
.num_resources = ARRAY_SIZE(snirm_53c710_rm200_rsrc),
.resource = snirm_53c710_rm200_rsrc
};
static int __init snirm_setup_devinit(void)
{
if (sni_brd_type == SNI_BRD_RM200) {
platform_device_register(&rm200_serial8250_device);
platform_device_register(&snirm_82596_rm200_pdev);
platform_device_register(&snirm_53c710_rm200_pdev);
}
return 0;
}
device_initcall(snirm_setup_devinit);
#define SNI_RM200_INT_STAT_REG 0xbc000000
#define SNI_RM200_INT_ENA_REG 0xbc080000
#define SNI_RM200_INT_START 24
#define SNI_RM200_INT_END 28
static void enable_rm200_irq(unsigned int irq)
{
unsigned int mask = 1 << (irq - SNI_RM200_INT_START);
*(volatile u8 *)SNI_RM200_INT_ENA_REG &= ~mask;
}
void disable_rm200_irq(unsigned int irq)
{
unsigned int mask = 1 << (irq - SNI_RM200_INT_START);
*(volatile u8 *)SNI_RM200_INT_ENA_REG |= mask;
}
void end_rm200_irq(unsigned int irq)
{
if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
enable_rm200_irq(irq);
}
static struct irq_chip rm200_irq_type = {
.typename = "RM200",
.ack = disable_rm200_irq,
.mask = disable_rm200_irq,
.mask_ack = disable_rm200_irq,
.unmask = enable_rm200_irq,
.end = end_rm200_irq,
};
static void sni_rm200_hwint(void)
{
u32 pending = read_c0_cause() & read_c0_status();
u8 mask;
u8 stat;
int irq;
if (pending & C_IRQ5)
do_IRQ (SNI_MIPS_IRQ_CPU_BASE + 7);
else if (pending & C_IRQ0) {
clear_c0_status (IE_IRQ0);
mask = *(volatile u8 *)SNI_RM200_INT_ENA_REG ^ 0x1f;
stat = *(volatile u8 *)SNI_RM200_INT_STAT_REG ^ 0x14;
irq = ffs(stat & mask & 0x1f);
if (likely(irq > 0))
do_IRQ (irq + SNI_RM200_INT_START - 1);
set_c0_status (IE_IRQ0);
}
}
void __init sni_rm200_irq_init(void)
{
int i;
* (volatile u8 *)SNI_RM200_INT_ENA_REG = 0x1f;
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);
}
void sni_rm200_init(void)
{
set_io_port_base(SNI_PORT_BASE + 0x02000000);
ioport_resource.end += 0x02000000;
ds1216_base = (volatile unsigned char *) SNI_DS1216_RM200_BASE;
rtc_mips_get_time = ds1216_get_cmos_time;
board_time_init = sni_cpu_time_init;
}

242
arch/mips/sni/setup.c
View File

@@ -6,16 +6,10 @@
* for more details.
*
* Copyright (C) 1996, 97, 98, 2000, 03, 04, 06 Ralf Baechle (ralf@linux-mips.org)
* Copyright (C) 2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
*/
#include <linux/eisa.h>
#include <linux/hdreg.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/mc146818rtc.h>
#include <linux/pm.h>
#include <linux/pci.h>
#include <linux/console.h>
#include <linux/fb.h>
#include <linux/screen_info.h>
@@ -25,52 +19,16 @@
#include <asm/sgialib.h>
#endif
#include <asm/bcache.h>
#include <asm/bootinfo.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mc146818-time.h>
#include <asm/processor.h>
#include <asm/reboot.h>
#include <asm/sni.h>
#include <asm/time.h>
#include <asm/traps.h>
unsigned int sni_brd_type;
extern void sni_machine_restart(char *command);
extern void sni_machine_halt(void);
extern void sni_machine_power_off(void);
void __init plat_timer_setup(struct irqaction *irq)
{
/* set the clock to 100 Hz */
outb_p(0x34,0x43); /* binary, mode 2, LSB/MSB, ch 0 */
outb_p(LATCH & 0xff , 0x40); /* LSB */
outb(LATCH >> 8 , 0x40); /* MSB */
setup_irq(0, irq);
}
/*
* A bit more gossip about the iron we're running on ...
*/
static inline void sni_pcimt_detect(void)
{
char boardtype[80];
unsigned char csmsr;
char *p = boardtype;
unsigned int asic;
csmsr = *(volatile unsigned char *)PCIMT_CSMSR;
p += sprintf(p, "%s PCI", (csmsr & 0x80) ? "RM200" : "RM300");
if ((csmsr & 0x80) == 0)
p += sprintf(p, ", board revision %s",
(csmsr & 0x20) ? "D" : "C");
asic = csmsr & 0x80;
asic = (csmsr & 0x08) ? asic : !asic;
p += sprintf(p, ", ASIC PCI Rev %s", asic ? "1.0" : "1.1");
printk("%s.\n", boardtype);
}
static void __init sni_display_setup(void)
{
#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_ARC)
@@ -90,175 +48,11 @@ static void __init sni_display_setup(void)
#endif
}
static struct resource sni_io_resource = {
.start = 0x00001000UL,
.end = 0x03bfffffUL,
.name = "PCIMT IO MEM",
.flags = IORESOURCE_IO,
};
static struct resource pcimt_io_resources[] = {
{
.start = 0x00,
.end = 0x1f,
.name = "dma1",
.flags = IORESOURCE_BUSY
}, {
.start = 0x40,
.end = 0x5f,
.name = "timer",
.flags = IORESOURCE_BUSY
}, {
.start = 0x60,
.end = 0x6f,
.name = "keyboard",
.flags = IORESOURCE_BUSY
}, {
.start = 0x80,
.end = 0x8f,
.name = "dma page reg",
.flags = IORESOURCE_BUSY
}, {
.start = 0xc0,
.end = 0xdf,
.name = "dma2",
.flags = IORESOURCE_BUSY
}, {
.start = 0xcfc,
.end = 0xcff,
.name = "PCI config data",
.flags = IORESOURCE_BUSY
}
};
static struct resource sni_mem_resource = {
.start = 0x10000000UL,
.end = 0xffffffffUL,
.name = "PCIMT PCI MEM",
.flags = IORESOURCE_MEM
};
/*
* The RM200/RM300 has a few holes in it's PCI/EISA memory address space used
* for other purposes. Be paranoid and allocate all of the before the PCI
* code gets a chance to to map anything else there ...
*
* This leaves the following areas available:
*
* 0x10000000 - 0x1009ffff (640kB) PCI/EISA/ISA Bus Memory
* 0x10100000 - 0x13ffffff ( 15MB) PCI/EISA/ISA Bus Memory
* 0x18000000 - 0x1fbfffff (124MB) PCI/EISA Bus Memory
* 0x1ff08000 - 0x1ffeffff (816kB) PCI/EISA Bus Memory
* 0xa0000000 - 0xffffffff (1.5GB) PCI/EISA Bus Memory
*/
static struct resource pcimt_mem_resources[] = {
{
.start = 0x100a0000,
.end = 0x100bffff,
.name = "Video RAM area",
.flags = IORESOURCE_BUSY
}, {
.start = 0x100c0000,
.end = 0x100fffff,
.name = "ISA Reserved",
.flags = IORESOURCE_BUSY
}, {
.start = 0x14000000,
.end = 0x17bfffff,
.name = "PCI IO",
.flags = IORESOURCE_BUSY
}, {
.start = 0x17c00000,
.end = 0x17ffffff,
.name = "Cache Replacement Area",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1a000000,
.end = 0x1a000003,
.name = "PCI INT Acknowledge",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fc00000,
.end = 0x1fc7ffff,
.name = "Boot PROM",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fc80000,
.end = 0x1fcfffff,
.name = "Diag PROM",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fd00000,
.end = 0x1fdfffff,
.name = "X-Bus",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fe00000,
.end = 0x1fefffff,
.name = "BIOS map",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1ff00000,
.end = 0x1ff7ffff,
.name = "NVRAM / EEPROM",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1fff0000,
.end = 0x1fffefff,
.name = "ASIC PCI",
.flags = IORESOURCE_BUSY
}, {
.start = 0x1ffff000,
.end = 0x1fffffff,
.name = "MP Agent",
.flags = IORESOURCE_BUSY
}, {
.start = 0x20000000,
.end = 0x9fffffff,
.name = "Main Memory",
.flags = IORESOURCE_BUSY
}
};
static void __init sni_resource_init(void)
{
int i;
/* request I/O space for devices used on all i[345]86 PCs */
for (i = 0; i < ARRAY_SIZE(pcimt_io_resources); i++)
request_resource(&ioport_resource, pcimt_io_resources + i);
/* request mem space for pcimt-specific devices */
for (i = 0; i < ARRAY_SIZE(pcimt_mem_resources); i++)
request_resource(&sni_mem_resource, pcimt_mem_resources + i);
ioport_resource.end = sni_io_resource.end;
}
extern struct pci_ops sni_pci_ops;
static struct pci_controller sni_controller = {
.pci_ops = &sni_pci_ops,
.mem_resource = &sni_mem_resource,
.mem_offset = 0x10000000UL,
.io_resource = &sni_io_resource,
.io_offset = 0x00000000UL
};
static inline void sni_pcimt_time_init(void)
{
rtc_mips_get_time = mc146818_get_cmos_time;
rtc_mips_set_time = mc146818_set_rtc_mmss;
}
void __init plat_mem_setup(void)
{
sni_pcimt_detect();
sni_pcimt_sc_init();
sni_pcimt_time_init();
set_io_port_base(SNI_PORT_BASE);
ioport_resource.end = sni_io_resource.end;
// ioport_resource.end = sni_io_resource.end;
/*
* Setup (E)ISA I/O memory access stuff
@@ -268,15 +62,33 @@ void __init plat_mem_setup(void)
EISA_bus = 1;
#endif
sni_resource_init();
switch (sni_brd_type) {
case SNI_BRD_10:
case SNI_BRD_10NEW:
case SNI_BRD_TOWER_OASIC:
case SNI_BRD_MINITOWER:
sni_a20r_init();
break;
case SNI_BRD_PCI_TOWER:
case SNI_BRD_PCI_TOWER_CPLUS:
sni_pcit_init();
break;
case SNI_BRD_RM200:
sni_rm200_init();
break;
case SNI_BRD_PCI_MTOWER:
case SNI_BRD_PCI_DESKTOP:
case SNI_BRD_PCI_MTOWER_CPLUS:
sni_pcimt_init();
break;
}
_machine_restart = sni_machine_restart;
_machine_halt = sni_machine_halt;
pm_power_off = sni_machine_power_off;
sni_display_setup();
#ifdef CONFIG_PCI
register_pci_controller(&sni_controller);
#endif
}

129
arch/mips/sni/sniprom.c
View File

@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/console.h>
#include <asm/addrspace.h>
#include <asm/sni.h>
@@ -31,7 +32,7 @@
#define PROM_ENTRY(x) (PROM_VEC + (x))
#undef DEBUG
#define DEBUG
#ifdef DEBUG
#define DBG_PRINTF(x...) prom_printf(x)
#else
@@ -93,14 +94,14 @@ static void sni_idprom_dump(void)
{
int i;
prom_printf("SNI IDProm dump (first 128byte):\n");
for(i=0;i<128;i++) {
prom_printf("SNI IDProm dump:\n");
for (i = 0; i < 256; i++) {
if (i%16 == 0)
prom_printf("%04x ", i);
prom_printf("%02x ", *(unsigned char *) (SNI_IDPROM_BASE+i));
prom_printf("%02x ", *(unsigned char *) (SNI_IDPROM_BASE + i));
if (i%16 == 15)
if (i % 16 == 15)
prom_printf("\n");
}
}
@@ -118,7 +119,7 @@ static void sni_mem_init(void )
} memconf[8];
/* MemSIZE from prom in 16MByte chunks */
memsize=*((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
DBG_PRINTF("IDProm memsize: %lu MByte\n", memsize);
@@ -126,26 +127,134 @@ static void sni_mem_init(void )
__prom_get_memconf(&memconf);
DBG_PRINTF("prom_get_mem_conf memory configuration:\n");
for(i=0;i<8 && memconf[i].size;i++) {
prom_printf("Bank%d: %08x @ %08x\n", i,
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;
}
}
DBG_PRINTF("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);
add_preferred_console("ttyS", port, baud ? options : NULL);
}
}
void __init prom_init(void)
{
int argc = fw_arg0;
char **argv = (void *)fw_arg1;
unsigned int sni_brd_type = *(unsigned char *) SNI_IDPROM_BRDTYPE;
int i;
int cputype;
DBG_PRINTF("Found SNI brdtype %02x\n", sni_brd_type);
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;
}
DBG_PRINTF("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++) {

148
arch/mips/sni/time.c Normal file
View File

@@ -0,0 +1,148 @@
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/time.h>
#include <asm/sni.h>
#include <asm/time.h>
#define SNI_CLOCK_TICK_RATE 3686400
#define SNI_COUNTER2_DIV 64
#define SNI_COUNTER0_DIV ((SNI_CLOCK_TICK_RATE / SNI_COUNTER2_DIV) / HZ)
static void sni_a20r_timer_ack(void)
{
*(volatile u8 *)A20R_PT_TIM0_ACK = 0x0; wmb();
}
/*
* a20r platform uses 2 counters to divide the input frequency.
* Counter 2 output is connected to Counter 0 & 1 input.
*/
static void __init sni_a20r_timer_setup(struct irqaction *irq)
{
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 12) = 0x34; wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 0) = (SNI_COUNTER0_DIV) & 0xff; wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 0) = (SNI_COUNTER0_DIV >> 8) & 0xff; wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 12) = 0xb4; wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 8) = (SNI_COUNTER2_DIV) & 0xff; wmb();
*(volatile u8 *)(A20R_PT_CLOCK_BASE + 8) = (SNI_COUNTER2_DIV >> 8) & 0xff; wmb();
setup_irq(SNI_A20R_IRQ_TIMER, irq);
mips_timer_ack = sni_a20r_timer_ack;
}
#define SNI_8254_TICK_RATE 1193182UL
#define SNI_8254_TCSAMP_COUNTER ((SNI_8254_TICK_RATE / HZ) + 255)
static __init unsigned long dosample(void)
{
u32 ct0, ct1;
volatile u8 msb, lsb;
/* Start the counter. */
outb_p (0x34, 0x43);
outb_p(SNI_8254_TCSAMP_COUNTER & 0xff, 0x40);
outb (SNI_8254_TCSAMP_COUNTER >> 8, 0x40);
/* Get initial counter invariant */
ct0 = read_c0_count();
/* Latch and spin until top byte of counter0 is zero */
do {
outb (0x00, 0x43);
lsb = inb (0x40);
msb = inb (0x40);
ct1 = read_c0_count();
} while (msb);
/* Stop the counter. */
outb (0x38, 0x43);
/*
* Return the difference, this is how far the r4k counter increments
* for every 1/HZ seconds. We round off the nearest 1 MHz of master
* clock (= 1000000 / HZ / 2).
*/
/*return (ct1 - ct0 + (500000/HZ/2)) / (500000/HZ) * (500000/HZ);*/
return (ct1 - ct0) / (500000/HZ) * (500000/HZ);
}
/*
* Here we need to calibrate the cycle counter to at least be close.
*/
__init void sni_cpu_time_init(void)
{
unsigned long r4k_ticks[3];
unsigned long r4k_tick;
/*
* Figure out the r4k offset, the algorithm is very simple and works in
* _all_ cases as long as the 8254 counter register itself works ok (as
* an interrupt driving timer it does not because of bug, this is why
* we are using the onchip r4k counter/compare register to serve this
* purpose, but for r4k_offset calculation it will work ok for us).
* There are other very complicated ways of performing this calculation
* but this one works just fine so I am not going to futz around. ;-)
*/
printk(KERN_INFO "Calibrating system timer... ");
dosample(); /* Prime cache. */
dosample(); /* Prime cache. */
/* Zero is NOT an option. */
do {
r4k_ticks[0] = dosample();
} while (!r4k_ticks[0]);
do {
r4k_ticks[1] = dosample();
} while (!r4k_ticks[1]);
if (r4k_ticks[0] != r4k_ticks[1]) {
printk("warning: timer counts differ, retrying... ");
r4k_ticks[2] = dosample();
if (r4k_ticks[2] == r4k_ticks[0]
|| r4k_ticks[2] == r4k_ticks[1])
r4k_tick = r4k_ticks[2];
else {
printk("disagreement, using average... ");
r4k_tick = (r4k_ticks[0] + r4k_ticks[1]
+ r4k_ticks[2]) / 3;
}
} else
r4k_tick = r4k_ticks[0];
printk("%d [%d.%04d MHz CPU]\n", (int) r4k_tick,
(int) (r4k_tick / (500000 / HZ)),
(int) (r4k_tick % (500000 / HZ)));
mips_hpt_frequency = r4k_tick * HZ;
}
/*
* R4k counter based timer interrupt. Works on RM200-225 and possibly
* others but not on RM400
*/
static void __init sni_cpu_timer_setup(struct irqaction *irq)
{
setup_irq(SNI_MIPS_IRQ_CPU_TIMER, irq);
}
void __init plat_timer_setup(struct irqaction *irq)
{
switch (sni_brd_type) {
case SNI_BRD_10:
case SNI_BRD_10NEW:
case SNI_BRD_TOWER_OASIC:
case SNI_BRD_MINITOWER:
sni_a20r_timer_setup (irq);
break;
case SNI_BRD_PCI_TOWER:
case SNI_BRD_RM200:
case SNI_BRD_PCI_MTOWER:
case SNI_BRD_PCI_DESKTOP:
case SNI_BRD_PCI_TOWER_CPLUS:
case SNI_BRD_PCI_MTOWER_CPLUS:
sni_cpu_timer_setup (irq);
break;
}
}