Revision: linuxbios@linuxbios.org--devel/freebios--devel--2.0--patch-26

Creator:  Hamish Guthrie <hamish@prodigi.ch>

Added AMD GX1 northbridge and cs5530 Southbridge


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1942 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
arch import user (historical) 2005-07-06 17:06:46 +00:00
parent 4e83d70a43
commit d24d6993b6
11 changed files with 733 additions and 0 deletions

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config chip.h
object northbridge.o

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struct northbridge_amd_gx1_config
{
};
extern struct chip_operations northbridge_amd_gx1_ops;

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#include <console/console.h>
#include <arch/io.h>
#include <stdint.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <stdlib.h>
#include <string.h>
#include <bitops.h>
#include "chip.h"
#include "northbridge.h"
#include <cpu/amd/gx1def.h>
#define NORTHBRIDGE_FILE "northbridge.c"
/*
*/
static void optimize_xbus(device_t dev)
{
/* Optimise X-Bus performance */
pci_write_config8(dev, 0x40, 0x1e);
pci_write_config8(dev, 0x41, 0x52);
pci_write_config8(dev, 0x43, 0xc1);
pci_write_config8(dev, 0x44, 0x00);
}
static void enable_shadow(device_t dev)
{
}
static void northbridge_init(device_t dev)
{
printk_debug("northbridge: %s()\n", __FUNCTION__);
optimize_xbus(dev);
enable_shadow(dev);
}
static struct device_operations northbridge_operations = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = northbridge_init,
.enable = 0,
.ops_pci = 0,
};
static struct pci_driver northbridge_driver __pci_driver = {
.ops = &northbridge_operations,
.vendor = PCI_VENDOR_ID_CYRIX,
.device = PCI_DEVICE_ID_CYRIX_PCI_MASTER,
};
#define BRIDGE_IO_MASK (IORESOURCE_IO | IORESOURCE_MEM)
static void pci_domain_read_resources(device_t dev)
{
struct resource *resource;
printk_spew("%s:%s()\n", NORTHBRIDGE_FILE, __FUNCTION__);
/* Initialize the system wide io space constraints */
resource = new_resource(dev, IOINDEX_SUBTRACTIVE(0,0));
resource->limit = 0xffffUL;
resource->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
/* Initialize the system wide memory resources constraints */
resource = new_resource(dev, IOINDEX_SUBTRACTIVE(1,0));
resource->limit = 0xffffffffULL;
resource->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
}
static void ram_resource(device_t dev, unsigned long index,
unsigned long basek, unsigned long sizek)
{
struct resource *resource;
if (!sizek) {
return;
}
resource = new_resource(dev, index);
resource->base = ((resource_t)basek) << 10;
resource->size = ((resource_t)sizek) << 10;
resource->flags = IORESOURCE_MEM | IORESOURCE_CACHEABLE | \
IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
}
static void tolm_test(void *gp, struct device *dev, struct resource *new)
{
struct resource **best_p = gp;
struct resource *best;
best = *best_p;
if (!best || (best->base > new->base)) {
best = new;
}
*best_p = best;
}
static uint32_t find_pci_tolm(struct bus *bus)
{
struct resource *min;
uint32_t tolm;
min = 0;
search_bus_resources(bus, IORESOURCE_MEM, IORESOURCE_MEM, tolm_test, &min);
tolm = 0xffffffffUL;
if (min && tolm > min->base) {
tolm = min->base;
}
return tolm;
}
#define FRAMEBUFFERK 4096
static void pci_domain_set_resources(device_t dev)
{
device_t mc_dev;
uint32_t pci_tolm;
pci_tolm = find_pci_tolm(&dev->link[0]);
mc_dev = dev->link[0].children;
if (mc_dev) {
unsigned int tomk, tolmk;
unsigned int ramreg = 0;
int i, idx;
unsigned int *bcdramtop = (unsigned int *)(GX_BASE + BC_DRAM_TOP);
unsigned int *mcgbaseadd = (unsigned int *)(GX_BASE + MC_GBASE_ADD);
for(i=0; i<0x20; i+= 0x10) {
unsigned int *mcreg = (unsigned int *)(GX_BASE + MC_BANK_CFG);
unsigned int mem_config = *mcreg;
if (((mem_config & (DIMM_PG_SZ << i)) >> (4 + i)) == 7)
continue;
ramreg += 1 << (((mem_config & (DIMM_SZ << i)) >> (i + 8)) + 2);
}
tomk = ramreg << 10;
/* Sort out the framebuffer size */
tomk -= FRAMEBUFFERK;
*bcdramtop = ((tomk << 10) - 1);
*mcgbaseadd = (tomk >> 9);
printk_debug("BC_DRAM_TOP = 0x%08x\n", *bcdramtop);
printk_debug("MC_GBASE_ADD = 0x%08x\n", *mcgbaseadd);
printk_debug("I would set ram size to %d Mbytes\n", (tomk >> 10));
/* Compute the top of Low memory */
tolmk = pci_tolm >> 10;
if (tolmk >= tomk) {
/* The PCI hole does does not overlap the memory.
*/
tolmk = tomk;
}
/* Report the memory regions */
idx = 10;
ram_resource(dev, idx++, 0, tolmk);
}
assign_resources(&dev->link[0]);
}
static unsigned int pci_domain_scan_bus(device_t dev, unsigned int max)
{
max = pci_scan_bus(&dev->link[0], PCI_DEVFN(0, 0), 0xff, max);
return max;
}
static struct device_operations pci_domain_ops = {
.read_resources = pci_domain_read_resources,
.set_resources = pci_domain_set_resources,
.enable_resources = enable_childrens_resources,
.init = 0,
.scan_bus = pci_domain_scan_bus,
};
static void cpu_bus_init(device_t dev)
{
initialize_cpus(&dev->link[0]);
}
static void cpu_bus_noop(device_t dev)
{
}
static struct device_operations cpu_bus_ops = {
.read_resources = cpu_bus_noop,
.set_resources = cpu_bus_noop,
.enable_resources = cpu_bus_noop,
.init = cpu_bus_init,
.scan_bus = 0,
};
static void enable_dev(struct device *dev)
{
/* Set the operations if it is a special bus type */
if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) {
dev->ops = &pci_domain_ops;
pci_set_method(dev);
}
else if (dev->path.type == DEVICE_PATH_APIC_CLUSTER) {
dev->ops = &cpu_bus_ops;
}
}
struct chip_operations northbridge_amd_gx1_ops = {
CHIP_NAME("AMD GX1 Northbridge")
.enable_dev = enable_dev,
};

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#ifndef NORTHBRIDGE_INTEL_440BX_H
#define NORTHBRIDGE_INTEL_440BX_H
extern unsigned int i440bx_scan_root_bus(device_t root, unsigned int max);
#endif /* NORTHBRIDGE_INTEL_440BX_H */

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#include <cpu/amd/gx1def.h>
/*
This software and ancillary information (herein called SOFTWARE )
called LinuxBIOS is made available under the terms described
here. The SOFTWARE has been approved for release with associated
LA-CC Number 00-34 . Unless otherwise indicated, this SOFTWARE has
been authored by an employee or employees of the University of
California, operator of the Los Alamos National Laboratory under
Contract No. W-7405-ENG-36 with the U.S. Department of Energy. The
U.S. Government has rights to use, reproduce, and distribute this
SOFTWARE. The public may copy, distribute, prepare derivative works
and publicly display this SOFTWARE without charge, provided that this
Notice and any statement of authorship are reproduced on all copies.
Neither the Government nor the University makes any warranty, express
or implied, or assumes any liability or responsibility for the use of
this SOFTWARE. If SOFTWARE is modified to produce derivative works,
such modified SOFTWARE should be clearly marked, so as not to confuse
it with the version available from LANL.
*/
/* Copyright 2000, Ron Minnich, Advanced Computing Lab, LANL
* rminnich@lanl.gov
*/
/* SDRAM initialization for GX1 - translated from Christer Weinigel's
assembler version into C.
Hamish Guthrie 10/4/2005 hamish@prodigi.ch
*/
#define NUM_REFRESH 8
#define TEST_DATA1 0x05A5A5A5A
#define TEST_DATA2 0x0DEADBEEF
void setGX1Mem(unsigned int addr, unsigned int data)
{
writel(data, (volatile void *)addr);
}
unsigned int getGX1Mem(unsigned int addr)
{
return (unsigned int)readl((const volatile void *)addr);
}
void do_refresh(void)
{
unsigned int tval, i;
post_code(0x71);
tval = getGX1Mem(GX_BASE + MC_MEM_CNTRL1);
tval |= RFSHTST;
for(i=0; i>NUM_REFRESH; i++)
setGX1Mem(GX_BASE + MC_MEM_CNTRL1, tval);
post_code(0x72);
}
void enable_dimm(void)
{
unsigned int tval, i;
post_code(0x73);
/* start SDCLCK's */
tval = getGX1Mem(GX_BASE + MC_MEM_CNTRL1);
tval &= ~SDCLKSTRT;
setGX1Mem(GX_BASE + MC_MEM_CNTRL1, tval);
tval |= SDCLKSTRT;
setGX1Mem(GX_BASE + MC_MEM_CNTRL1, tval);
/* Unmask SDCLK's */
tval = getGX1Mem(GX_BASE + MC_MEM_CNTRL2);
tval &= ~(SDCLK_MASK | SDCLKOUT_MASK);
setGX1Mem(GX_BASE + MC_MEM_CNTRL2, tval);
tval = getGX1Mem(GX_BASE + MC_MEM_CNTRL2);
/* Wait for clocks to unmask */
for(i=0; i<5000; i++)
outb(0, 0xed);
/* Refresh memory */
tval = getGX1Mem(GX_BASE + MC_MEM_CNTRL1);
tval |= RFSHTST;
for(i=0; i<NUM_REFRESH; i++)
setGX1Mem(GX_BASE + MC_MEM_CNTRL1, tval);
tval &= ~RFSHTST;
/* Start the SDCLK's */
tval &= ~PROGRAM_SDRAM;
setGX1Mem(GX_BASE + MC_MEM_CNTRL1, tval);
tval |= PROGRAM_SDRAM | 0x00002000; /* Set refresh timing */
setGX1Mem(GX_BASE + MC_MEM_CNTRL1, tval);
tval &= ~PROGRAM_SDRAM;
setGX1Mem(GX_BASE + MC_MEM_CNTRL1, tval);
/* Refresh memory again */
tval = getGX1Mem(GX_BASE + MC_MEM_CNTRL1);
tval |= RFSHTST;
for(i=0; i>NUM_REFRESH; i++)
setGX1Mem(GX_BASE + MC_MEM_CNTRL1, tval);
for(i=0; i<2000; i++)
outb(0, 0xed);
post_code(0x74);
}
static unsigned int size_dimm(int dimm_shift)
{
int bank_cfg = 0x700; /* MC_BANK_CFG for 512M */
unsigned int offset = 0x10000000; /* Offset 256M */
int failed_flag = 1;
do {
setGX1Mem(0, TEST_DATA1);
setGX1Mem(offset, TEST_DATA2);
setGX1Mem(0x100, 0); /* Clear the bus */
if (getGX1Mem(0) != TEST_DATA1) {
setGX1Mem(GX_BASE + MC_BANK_CFG,
getGX1Mem(GX_BASE + MC_BANK_CFG) & ~(DIMM_SZ << dimm_shift));
bank_cfg -= 0x100;
setGX1Mem(GX_BASE + MC_BANK_CFG,
getGX1Mem(GX_BASE + MC_BANK_CFG) | (bank_cfg << dimm_shift));
do_refresh();
offset >>= 1;
} else {
failed_flag = 0;
break;
}
} while (bank_cfg >= 0);
if (failed_flag)
return (0x0070 << dimm_shift);
else
return(getGX1Mem(GX_BASE + MC_BANK_CFG) & (DIMM_SZ << dimm_shift));
}
static unsigned int module_banks(int dimm_shift)
{
int page_size = 0x800; /* Smallest page = 1K * 2 banks */
int comp_banks;
#if 0
print_debug("MC_BANK_CFG = ");
print_debug_hex32(getGX1Mem(GX_BASE + MC_BANK_CFG));
print_debug("\r\n");
#endif
/* retrieve the page size from the MC register */
page_size <<= (((getGX1Mem(GX_BASE + MC_BANK_CFG) & (DIMM_PG_SZ << dimm_shift)) >> dimm_shift) >> 4);
#if 0
print_debug(" page_size = ");
print_debug_hex32(page_size);
print_debug("\r\n");
#endif
comp_banks = (((getGX1Mem(GX_BASE + MC_BANK_CFG) & (DIMM_COMP_BNK << dimm_shift)) >> dimm_shift) >> 12);
page_size <<= comp_banks;
setGX1Mem(0, TEST_DATA1);
setGX1Mem(page_size, TEST_DATA2);
setGX1Mem(0x100, 0); /* Clear the bus */
if (getGX1Mem(page_size) != TEST_DATA2) {
setGX1Mem(GX_BASE + MC_BANK_CFG,
getGX1Mem(GX_BASE + MC_BANK_CFG) & ~(DIMM_MOD_BNK << dimm_shift));
do_refresh();
}
#if 0
print_debug("MC_BANK_CFG = ");
print_debug_hex32(getGX1Mem(GX_BASE + MC_BANK_CFG));
print_debug("\r\n");
#endif
return(getGX1Mem(GX_BASE + MC_BANK_CFG) & (DIMM_MOD_BNK << dimm_shift));
}
static unsigned int component_banks(int dimm_shift)
{
int page_size = 0x800; /* Smallest page = 1K * 2 banks */
#if 0
print_debug("MC_BANK_CFG = ");
print_debug_hex32(getGX1Mem(GX_BASE + MC_BANK_CFG));
print_debug("\r\n");
#endif
page_size = page_size << (((getGX1Mem(GX_BASE + MC_BANK_CFG) & (DIMM_PG_SZ << dimm_shift)) >> dimm_shift) >> 4);
#if 0
print_debug(" page_size = ");
print_debug_hex32(page_size);
print_debug("\r\n");
#endif
setGX1Mem(0, TEST_DATA1);
setGX1Mem(page_size, TEST_DATA2);
setGX1Mem(0x100, 0); /* Clear the bus */
if (getGX1Mem(0) != TEST_DATA1) {
setGX1Mem(GX_BASE + MC_BANK_CFG,
getGX1Mem(GX_BASE + MC_BANK_CFG) & ~(DIMM_COMP_BNK << dimm_shift));
do_refresh();
}
#if 0
print_debug("MC_BANK_CFG = ");
print_debug_hex32(getGX1Mem(GX_BASE + MC_BANK_CFG));
print_debug("\r\n");
#endif
return(getGX1Mem(GX_BASE + MC_BANK_CFG) & (DIMM_COMP_BNK << dimm_shift));
}
static unsigned int page_size(int dimm_shift)
{
unsigned int page_test_offset = 0x2000;
unsigned int temp;
int page_size_config = 0x40;
unsigned int probe_config;
do {
setGX1Mem(0, TEST_DATA1);
setGX1Mem(page_test_offset, TEST_DATA2);
setGX1Mem(0x100, 0);
temp = getGX1Mem(0);
setGX1Mem(0, 0);
if(temp == TEST_DATA1) {
#if 0
print_debug(" Page size Config = ");
print_debug_hex32(page_size_config << dimm_shift);
print_debug("\r\n");
#endif
return(page_size_config << dimm_shift);
}
temp = ~(DIMM_PG_SZ << dimm_shift);
probe_config = getGX1Mem(GX_BASE + MC_BANK_CFG);
probe_config &= temp;
page_size_config -= 0x10;
page_size_config <<= dimm_shift;
probe_config |= page_size_config;
page_size_config >>= dimm_shift;
page_test_offset >>= 1;
setGX1Mem(GX_BASE + MC_BANK_CFG, probe_config);
do_refresh();
} while (page_size_config >= 0);
return 0x70;
}
static int dimm_detect(int dimm_shift)
{
unsigned int test;
print_debug("Probing for DIMM");
print_debug_char((dimm_shift >> 4) + 0x30);
print_debug("\r\n");
setGX1Mem(0, TEST_DATA1);
setGX1Mem(0x100, 0);
test = getGX1Mem(0);
setGX1Mem(0, 0);
if (test != TEST_DATA1)
return 0;
print_debug(" Found DIMM");
print_debug_char((dimm_shift >> 4) + 0x30);
print_debug("\r\n");
return 1;
}
static int size_memory(int dimm_shift, unsigned int mem_config)
{
if (!dimm_detect(dimm_shift))
return (mem_config);
mem_config &= (~(DIMM_PG_SZ << dimm_shift));
mem_config |= (page_size(dimm_shift));
print_debug(" Page Size: ");
print_debug_hex32(0x400 << ((mem_config & (DIMM_PG_SZ << dimm_shift)) >> (dimm_shift + 4)));
print_debug("\r\n");
/* Now do component banks detection */
mem_config &= (~(DIMM_COMP_BNK << dimm_shift));
mem_config |= (component_banks(dimm_shift));
print_debug(" Component Banks: ");
print_debug_char((((mem_config & (DIMM_COMP_BNK << dimm_shift)) >> (dimm_shift + 12)) ? 4 : 2) + 0x30);
print_debug("\r\n");
/* Now do module banks */
mem_config &= (~(DIMM_MOD_BNK << dimm_shift));
mem_config |= (module_banks(dimm_shift));
print_debug(" Module Banks: ");
print_debug_char((((mem_config & (DIMM_MOD_BNK << dimm_shift)) >> (dimm_shift + 14)) ? 2 : 1) + 0x30);
print_debug("\r\n");
mem_config &= (~(DIMM_SZ << dimm_shift));
mem_config |= (size_dimm(dimm_shift));
print_debug(" DIMM size: ");
print_debug_hex32(1 <<
((mem_config & (DIMM_SZ << dimm_shift)) >> (dimm_shift + 8)) + 22);
print_debug("\r\n");
return (mem_config);
}
static void sdram_init(void)
{
unsigned int mem_config = 0x00700070;
print_debug("Setting up default parameters for memory\r\n");
post_code(0x70);
setGX1Mem(GX_BASE + MC_MEM_CNTRL2, 0x000007d8); /* Disable all CLKS, Shift = 3 */
setGX1Mem(GX_BASE + MC_MEM_CNTRL1, 0x92140000); /* MD_DS=2, MA_DS=2, CNTL_DS=2 SDCLKRATE=4 */
setGX1Mem(GX_BASE + MC_BANK_CFG, 0x00700070); /* No DIMMS installed */
setGX1Mem(GX_BASE + MC_SYNC_TIM1, 0x3a733225); /* LTMODE=3, RC=10, RAS=7, RP=3, RCD=3, RRD=2, DPL=2 */
setGX1Mem(GX_BASE + MC_BANK_CFG, 0x57405740); /* Largest DIMM size
0x4000 -- 2 module banks
0x1000 -- 4 component banks
0x0700 -- DIMM size 512MB
0x0040 -- Page Size 16kB */
enable_dimm();
print_debug("Sizing memory\r\n");
setGX1Mem(GX_BASE + MC_BANK_CFG, 0x00705740);
do_refresh();
mem_config = size_memory(0, mem_config);
setGX1Mem(GX_BASE + MC_BANK_CFG, 0x57400070);
do_refresh();
mem_config = size_memory(16, mem_config);
print_debug("MC_BANK_CFG = ");
print_debug_hex32(mem_config);
print_debug("\r\n");
setGX1Mem(GX_BASE + MC_BANK_CFG, mem_config);
enable_dimm();
post_code(0x7e);
}

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#ifndef RAMINIT_H
#define RAMINIT_H
#define DIMM_SOCKETS 4
struct mem_controller {
device_t d0;
uint16_t channel0[DIMM_SOCKETS];
};
#endif /* RAMINIT_H */

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#config chip.h
driver cs5530.o
#driver cs5530_pci.o
driver cs5530_ide.o

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#ifndef _SOUTHBRIDGE_AMD_CS5530
#define _SOUTHBRIDGE_AMD_CS5530
extern struct chip_operations southbridge_amd_cs5530_ops;
struct southbridge_amd_cs5530_config {
/* PCI function enables so the pci scan bus finds the devices */
int enable_ide;
int enable_nvram;
};
#endif /* _SOUTHBRIDGE_AMD_CS5530 */

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#include <arch/io.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <device/pci_ids.h>
#include <console/console.h>
#include "cs5530.h"
static void nvram_on(struct device *dev)
{
#if 0
volatile char *flash = (volatile unsigned char *)0xFFFc0000;
unsigned char id1, id2;
#endif
unsigned char reg;
/* Enable writes to flash at top of memory */
pci_write_config8(dev, 0x52, 0xee);
/* Set positive decode on ROM */
/* Also, there is no apparent reason to turn off the devoce on the */
/* IDE devices */
reg = pci_read_config8(dev, 0x5b);
reg |= 1 << 5; /* ROM Decode */
reg |= 1 << 3; /* Primary IDE decode */
reg |= 1 << 4; /* Secondary IDE decode */
pci_write_config8(dev, 0x5b, reg);
#if 0 // just to test if the flash is accessible!
*(flash + 0x555) = 0xaa;
*(flash + 0x2aa) = 0x55;
*(flash + 0x555) = 0x90;
id1 = *(volatile unsigned char *) flash;
id2 = *(volatile unsigned char *) (flash + 1);
*flash = 0xf0;
printk_debug("Flash device: MFGID %02x, DEVID %02x\n", id1, id2);
#endif
}
static void southbridge_init(struct device *dev)
{
printk_spew("cs5530: %s\n", __FUNCTION__);
nvram_on(dev);
}
/*
static void dump_south(struct device *dev)
{
int i, j;
for(i=0; i<256; i+=16) {
printk_debug("0x%02x: ", i);
for(j=0; j<16; j++)
printk_debug("%02x ", pci_read_config8(dev, i+j));
printk_debug("\n");
}
}
*/
static void southbridge_enable(struct device *dev)
{
printk_spew("%s: dev is %p\n", __FUNCTION__, dev);
}
static void cs5530_pci_dev_enable_resources(device_t dev)
{
printk_spew("cs5530.c: %s()\n", __FUNCTION__);
pci_dev_enable_resources(dev);
enable_childrens_resources(dev);
}
static struct device_operations southbridge_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = cs5530_pci_dev_enable_resources,
.init = southbridge_init,
.enable = southbridge_enable,
.scan_bus = scan_static_bus,
};
static struct pci_driver cs5530_pci_driver __pci_driver = {
.ops = &southbridge_ops,
.vendor = PCI_VENDOR_ID_CYRIX,
.device = PCI_DEVICE_ID_CYRIX_5530_LEGACY,
};

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#ifndef _CS5530_H
#define _CS5530_H
#endif

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#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include "cs5530.h"
static void ide_init(struct device *dev)
{
printk_spew("cs5530_ide: %s\n", __FUNCTION__);
}
static void ide_enable(struct device *dev)
{
printk_spew("cs5530_ide: %s\n", __FUNCTION__);
}
static struct device_operations ide_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = ide_init,
.enable = ide_enable,
};
static struct pci_driver ide_driver __pci_driver = {
.ops = &ide_ops,
.vendor = PCI_VENDOR_ID_CYRIX,
.device = PCI_DEVICE_ID_CYRIX_5530_IDE,
};