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[PATCH] IPMI: use dmi_find_device()

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This patch replaces homebrew DMI scanning code in IPMI System Interface driver
with dmi_find_device() call.

Signed-off-by: Andrey Panin <pazke@donpac.ru>
Cc: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andrey Panin 2005-09-06 15:18:37 -07:00 committed by Linus Torvalds
parent 8db08ea7e6
commit b224cd3a0c
1 changed files with 17 additions and 88 deletions
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105
drivers/char/ipmi/ipmi_si_intf.c
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@ -75,6 +75,7 @@ static inline void add_usec_to_timer(struct timer_list *t, long v)
#include <asm/io.h> #include <asm/io.h>
#include "ipmi_si_sm.h" #include "ipmi_si_sm.h"
#include <linux/init.h> #include <linux/init.h>
#include <linux/dmi.h>
#define IPMI_SI_VERSION "v33" #define IPMI_SI_VERSION "v33"
@ -1610,22 +1611,15 @@ typedef struct dmi_ipmi_data
static dmi_ipmi_data_t dmi_data[SI_MAX_DRIVERS]; static dmi_ipmi_data_t dmi_data[SI_MAX_DRIVERS];
static int dmi_data_entries; static int dmi_data_entries;
typedef struct dmi_header static int __init decode_dmi(struct dmi_header *dm, int intf_num)
{ {
u8 type; u8 *data = (u8 *)dm;
u8 length;
u16 handle;
} dmi_header_t;
static int decode_dmi(dmi_header_t __iomem *dm, int intf_num)
{
u8 __iomem *data = (u8 __iomem *)dm;
unsigned long base_addr; unsigned long base_addr;
u8 reg_spacing; u8 reg_spacing;
u8 len = readb(&dm->length); u8 len = dm->length;
dmi_ipmi_data_t *ipmi_data = dmi_data+intf_num; dmi_ipmi_data_t *ipmi_data = dmi_data+intf_num;
ipmi_data->type = readb(&data[4]); ipmi_data->type = data[4];
memcpy(&base_addr, data+8, sizeof(unsigned long)); memcpy(&base_addr, data+8, sizeof(unsigned long));
if (len >= 0x11) { if (len >= 0x11) {
@ -1640,12 +1634,12 @@ static int decode_dmi(dmi_header_t __iomem *dm, int intf_num)
} }
/* If bit 4 of byte 0x10 is set, then the lsb for the address /* If bit 4 of byte 0x10 is set, then the lsb for the address
is odd. */ is odd. */
ipmi_data->base_addr = base_addr | ((readb(&data[0x10]) & 0x10) >> 4); ipmi_data->base_addr = base_addr | ((data[0x10] & 0x10) >> 4);
ipmi_data->irq = readb(&data[0x11]); ipmi_data->irq = data[0x11];
/* The top two bits of byte 0x10 hold the register spacing. */ /* The top two bits of byte 0x10 hold the register spacing. */
reg_spacing = (readb(&data[0x10]) & 0xC0) >> 6; reg_spacing = (data[0x10] & 0xC0) >> 6;
switch(reg_spacing){ switch(reg_spacing){
case 0x00: /* Byte boundaries */ case 0x00: /* Byte boundaries */
ipmi_data->offset = 1; ipmi_data->offset = 1;
@ -1673,7 +1667,7 @@ static int decode_dmi(dmi_header_t __iomem *dm, int intf_num)
ipmi_data->offset = 1; ipmi_data->offset = 1;
} }
ipmi_data->slave_addr = readb(&data[6]); ipmi_data->slave_addr = data[6];
if (is_new_interface(-1, ipmi_data->addr_space,ipmi_data->base_addr)) { if (is_new_interface(-1, ipmi_data->addr_space,ipmi_data->base_addr)) {
dmi_data_entries++; dmi_data_entries++;
@ -1685,82 +1679,17 @@ static int decode_dmi(dmi_header_t __iomem *dm, int intf_num)
return -1; return -1;
} }
static int dmi_table(u32 base, int len, int num) static void __init dmi_find_bmc(void)
{ {
u8 __iomem *buf; struct dmi_device *dev = NULL;
struct dmi_header __iomem *dm; int intf_num = 0;
u8 __iomem *data;
int i=1;
int status=-1;
int intf_num = 0;
buf = ioremap(base, len); while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) {
if(buf==NULL) if (intf_num >= SI_MAX_DRIVERS)
return -1; break;
data = buf; decode_dmi((struct dmi_header *) dev->device_data, intf_num++);
while(i<num && (data - buf) < len)
{
dm=(dmi_header_t __iomem *)data;
if((data-buf+readb(&dm->length)) >= len)
break;
if (readb(&dm->type) == 38) {
if (decode_dmi(dm, intf_num) == 0) {
intf_num++;
if (intf_num >= SI_MAX_DRIVERS)
break;
}
}
data+=readb(&dm->length);
while((data-buf) < len && (readb(data)||readb(data+1)))
data++;
data+=2;
i++;
} }
iounmap(buf);
return status;
}
static inline int dmi_checksum(u8 *buf)
{
u8 sum=0;
int a;
for(a=0; a<15; a++)
sum+=buf[a];
return (sum==0);
}
static int dmi_decode(void)
{
u8 buf[15];
u32 fp=0xF0000;
#ifdef CONFIG_SIMNOW
return -1;
#endif
while(fp < 0xFFFFF)
{
isa_memcpy_fromio(buf, fp, 15);
if(memcmp(buf, "_DMI_", 5)==0 && dmi_checksum(buf))
{
u16 num=buf[13]<<8|buf[12];
u16 len=buf[7]<<8|buf[6];
u32 base=buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8];
if(dmi_table(base, len, num) == 0)
return 0;
}
fp+=16;
}
return -1;
} }
static int try_init_smbios(int intf_num, struct smi_info **new_info) static int try_init_smbios(int intf_num, struct smi_info **new_info)
@ -2293,7 +2222,7 @@ static __init int init_ipmi_si(void)
printk("\n"); printk("\n");
#ifdef CONFIG_X86 #ifdef CONFIG_X86
dmi_decode(); dmi_find_bmc();
#endif #endif
rv = init_one_smi(0, &(smi_infos[pos])); rv = init_one_smi(0, &(smi_infos[pos]));