android_kernel_xiaomi_sm8350/drivers/scsi/gdth_proc.c
James Bottomley ff83efacf2 [SCSI] gdth: don't call pci_free_consistent under spinlock
The spinlock is held over too large a region: pscratch is a permanent
address (it's allocated at boot time and never changes).  All you need
the smp lock for is mediating the scratch in use flag, so fix this by
moving the spinlock into the case where we set the pscratch_busy flag
to false.

Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-02-18 09:02:25 -06:00

817 lines
28 KiB
C

/* gdth_proc.c
* $Id: gdth_proc.c,v 1.43 2006/01/11 16:15:00 achim Exp $
*/
#include <linux/completion.h>
int gdth_proc_info(struct Scsi_Host *host, char *buffer,char **start,off_t offset,int length,
int inout)
{
gdth_ha_str *ha = shost_priv(host);
TRACE2(("gdth_proc_info() length %d offs %d inout %d\n",
length,(int)offset,inout));
if (inout)
return(gdth_set_info(buffer,length,host,ha));
else
return(gdth_get_info(buffer,start,offset,length,host,ha));
}
static int gdth_set_info(char *buffer,int length,struct Scsi_Host *host,
gdth_ha_str *ha)
{
int ret_val = -EINVAL;
TRACE2(("gdth_set_info() ha %d\n",ha->hanum,));
if (length >= 4) {
if (strncmp(buffer,"gdth",4) == 0) {
buffer += 5;
length -= 5;
ret_val = gdth_set_asc_info(host, buffer, length, ha);
}
}
return ret_val;
}
static int gdth_set_asc_info(struct Scsi_Host *host, char *buffer,
int length, gdth_ha_str *ha)
{
int orig_length, drive, wb_mode;
int i, found;
gdth_cmd_str gdtcmd;
gdth_cpar_str *pcpar;
ulong64 paddr;
char cmnd[MAX_COMMAND_SIZE];
memset(cmnd, 0xff, 12);
memset(&gdtcmd, 0, sizeof(gdth_cmd_str));
TRACE2(("gdth_set_asc_info() ha %d\n",ha->hanum));
orig_length = length + 5;
drive = -1;
wb_mode = 0;
found = FALSE;
if (length >= 5 && strncmp(buffer,"flush",5)==0) {
buffer += 6;
length -= 6;
if (length && *buffer>='0' && *buffer<='9') {
drive = (int)(*buffer-'0');
++buffer; --length;
if (length && *buffer>='0' && *buffer<='9') {
drive = drive*10 + (int)(*buffer-'0');
++buffer; --length;
}
printk("GDT: Flushing host drive %d .. ",drive);
} else {
printk("GDT: Flushing all host drives .. ");
}
for (i = 0; i < MAX_HDRIVES; ++i) {
if (ha->hdr[i].present) {
if (drive != -1 && i != drive)
continue;
found = TRUE;
gdtcmd.Service = CACHESERVICE;
gdtcmd.OpCode = GDT_FLUSH;
if (ha->cache_feat & GDT_64BIT) {
gdtcmd.u.cache64.DeviceNo = i;
gdtcmd.u.cache64.BlockNo = 1;
} else {
gdtcmd.u.cache.DeviceNo = i;
gdtcmd.u.cache.BlockNo = 1;
}
gdth_execute(host, &gdtcmd, cmnd, 30, NULL);
}
}
if (!found)
printk("\nNo host drive found !\n");
else
printk("Done.\n");
return(orig_length);
}
if (length >= 7 && strncmp(buffer,"wbp_off",7)==0) {
buffer += 8;
length -= 8;
printk("GDT: Disabling write back permanently .. ");
wb_mode = 1;
} else if (length >= 6 && strncmp(buffer,"wbp_on",6)==0) {
buffer += 7;
length -= 7;
printk("GDT: Enabling write back permanently .. ");
wb_mode = 2;
} else if (length >= 6 && strncmp(buffer,"wb_off",6)==0) {
buffer += 7;
length -= 7;
printk("GDT: Disabling write back commands .. ");
if (ha->cache_feat & GDT_WR_THROUGH) {
gdth_write_through = TRUE;
printk("Done.\n");
} else {
printk("Not supported !\n");
}
return(orig_length);
} else if (length >= 5 && strncmp(buffer,"wb_on",5)==0) {
buffer += 6;
length -= 6;
printk("GDT: Enabling write back commands .. ");
gdth_write_through = FALSE;
printk("Done.\n");
return(orig_length);
}
if (wb_mode) {
if (!gdth_ioctl_alloc(ha, sizeof(gdth_cpar_str), TRUE, &paddr))
return(-EBUSY);
pcpar = (gdth_cpar_str *)ha->pscratch;
memcpy( pcpar, &ha->cpar, sizeof(gdth_cpar_str) );
gdtcmd.Service = CACHESERVICE;
gdtcmd.OpCode = GDT_IOCTL;
gdtcmd.u.ioctl.p_param = paddr;
gdtcmd.u.ioctl.param_size = sizeof(gdth_cpar_str);
gdtcmd.u.ioctl.subfunc = CACHE_CONFIG;
gdtcmd.u.ioctl.channel = INVALID_CHANNEL;
pcpar->write_back = wb_mode==1 ? 0:1;
gdth_execute(host, &gdtcmd, cmnd, 30, NULL);
gdth_ioctl_free(ha, GDTH_SCRATCH, ha->pscratch, paddr);
printk("Done.\n");
return(orig_length);
}
printk("GDT: Unknown command: %s Length: %d\n",buffer,length);
return(-EINVAL);
}
static int gdth_get_info(char *buffer,char **start,off_t offset,int length,
struct Scsi_Host *host, gdth_ha_str *ha)
{
int size = 0,len = 0;
off_t begin = 0,pos = 0;
int id, i, j, k, sec, flag;
int no_mdrv = 0, drv_no, is_mirr;
ulong32 cnt;
ulong64 paddr;
int rc = -ENOMEM;
gdth_cmd_str *gdtcmd;
gdth_evt_str *estr;
char hrec[161];
struct timeval tv;
char *buf;
gdth_dskstat_str *pds;
gdth_diskinfo_str *pdi;
gdth_arrayinf_str *pai;
gdth_defcnt_str *pdef;
gdth_cdrinfo_str *pcdi;
gdth_hget_str *phg;
char cmnd[MAX_COMMAND_SIZE];
gdtcmd = kmalloc(sizeof(*gdtcmd), GFP_KERNEL);
estr = kmalloc(sizeof(*estr), GFP_KERNEL);
if (!gdtcmd || !estr)
goto free_fail;
memset(cmnd, 0xff, 12);
memset(gdtcmd, 0, sizeof(gdth_cmd_str));
TRACE2(("gdth_get_info() ha %d\n",ha->hanum));
/* request is i.e. "cat /proc/scsi/gdth/0" */
/* format: %-15s\t%-10s\t%-15s\t%s */
/* driver parameters */
size = sprintf(buffer+len,"Driver Parameters:\n");
len += size; pos = begin + len;
if (reserve_list[0] == 0xff)
strcpy(hrec, "--");
else {
sprintf(hrec, "%d", reserve_list[0]);
for (i = 1; i < MAX_RES_ARGS; i++) {
if (reserve_list[i] == 0xff)
break;
sprintf(hrec,"%s,%d", hrec, reserve_list[i]);
}
}
size = sprintf(buffer+len,
" reserve_mode: \t%d \treserve_list: \t%s\n",
reserve_mode, hrec);
len += size; pos = begin + len;
size = sprintf(buffer+len,
" max_ids: \t%-3d \thdr_channel: \t%d\n",
max_ids, hdr_channel);
len += size; pos = begin + len;
/* controller information */
size = sprintf(buffer+len,"\nDisk Array Controller Information:\n");
len += size; pos = begin + len;
strcpy(hrec, ha->binfo.type_string);
size = sprintf(buffer+len,
" Number: \t%d \tName: \t%s\n",
ha->hanum, hrec);
len += size; pos = begin + len;
if (ha->more_proc)
sprintf(hrec, "%d.%02d.%02d-%c%03X",
(unchar)(ha->binfo.upd_fw_ver>>24),
(unchar)(ha->binfo.upd_fw_ver>>16),
(unchar)(ha->binfo.upd_fw_ver),
ha->bfeat.raid ? 'R':'N',
ha->binfo.upd_revision);
else
sprintf(hrec, "%d.%02d", (unchar)(ha->cpar.version>>8),
(unchar)(ha->cpar.version));
size = sprintf(buffer+len,
" Driver Ver.: \t%-10s\tFirmware Ver.: \t%s\n",
GDTH_VERSION_STR, hrec);
len += size; pos = begin + len;
if (ha->more_proc) {
/* more information: 1. about controller */
size = sprintf(buffer+len,
" Serial No.: \t0x%8X\tCache RAM size:\t%d KB\n",
ha->binfo.ser_no, ha->binfo.memsize / 1024);
len += size; pos = begin + len;
}
#ifdef GDTH_DMA_STATISTICS
/* controller statistics */
size = sprintf(buffer+len,"\nController Statistics:\n");
len += size; pos = begin + len;
size = sprintf(buffer+len,
" 32-bit DMA buffer:\t%lu\t64-bit DMA buffer:\t%lu\n",
ha->dma32_cnt, ha->dma64_cnt);
len += size; pos = begin + len;
#endif
if (pos < offset) {
len = 0;
begin = pos;
}
if (pos > offset + length)
goto stop_output;
if (ha->more_proc) {
/* more information: 2. about physical devices */
size = sprintf(buffer+len,"\nPhysical Devices:");
len += size; pos = begin + len;
flag = FALSE;
buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
if (!buf)
goto stop_output;
for (i = 0; i < ha->bus_cnt; ++i) {
/* 2.a statistics (and retries/reassigns) */
TRACE2(("pdr_statistics() chn %d\n",i));
pds = (gdth_dskstat_str *)(buf + GDTH_SCRATCH/4);
gdtcmd->Service = CACHESERVICE;
gdtcmd->OpCode = GDT_IOCTL;
gdtcmd->u.ioctl.p_param = paddr + GDTH_SCRATCH/4;
gdtcmd->u.ioctl.param_size = 3*GDTH_SCRATCH/4;
gdtcmd->u.ioctl.subfunc = DSK_STATISTICS | L_CTRL_PATTERN;
gdtcmd->u.ioctl.channel = ha->raw[i].address | INVALID_CHANNEL;
pds->bid = ha->raw[i].local_no;
pds->first = 0;
pds->entries = ha->raw[i].pdev_cnt;
cnt = (3*GDTH_SCRATCH/4 - 5 * sizeof(ulong32)) /
sizeof(pds->list[0]);
if (pds->entries > cnt)
pds->entries = cnt;
if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
pds->count = 0;
/* other IOCTLs must fit into area GDTH_SCRATCH/4 */
for (j = 0; j < ha->raw[i].pdev_cnt; ++j) {
/* 2.b drive info */
TRACE2(("scsi_drv_info() chn %d dev %d\n",
i, ha->raw[i].id_list[j]));
pdi = (gdth_diskinfo_str *)buf;
gdtcmd->Service = CACHESERVICE;
gdtcmd->OpCode = GDT_IOCTL;
gdtcmd->u.ioctl.p_param = paddr;
gdtcmd->u.ioctl.param_size = sizeof(gdth_diskinfo_str);
gdtcmd->u.ioctl.subfunc = SCSI_DR_INFO | L_CTRL_PATTERN;
gdtcmd->u.ioctl.channel =
ha->raw[i].address | ha->raw[i].id_list[j];
if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
strncpy(hrec,pdi->vendor,8);
strncpy(hrec+8,pdi->product,16);
strncpy(hrec+24,pdi->revision,4);
hrec[28] = 0;
size = sprintf(buffer+len,
"\n Chn/ID/LUN: \t%c/%02d/%d \tName: \t%s\n",
'A'+i,pdi->target_id,pdi->lun,hrec);
len += size; pos = begin + len;
flag = TRUE;
pdi->no_ldrive &= 0xffff;
if (pdi->no_ldrive == 0xffff)
strcpy(hrec,"--");
else
sprintf(hrec,"%d",pdi->no_ldrive);
size = sprintf(buffer+len,
" Capacity [MB]:\t%-6d \tTo Log. Drive: \t%s\n",
pdi->blkcnt/(1024*1024/pdi->blksize),
hrec);
len += size; pos = begin + len;
} else {
pdi->devtype = 0xff;
}
if (pdi->devtype == 0) {
/* search retries/reassigns */
for (k = 0; k < pds->count; ++k) {
if (pds->list[k].tid == pdi->target_id &&
pds->list[k].lun == pdi->lun) {
size = sprintf(buffer+len,
" Retries: \t%-6d \tReassigns: \t%d\n",
pds->list[k].retries,
pds->list[k].reassigns);
len += size; pos = begin + len;
break;
}
}
/* 2.c grown defects */
TRACE2(("scsi_drv_defcnt() chn %d dev %d\n",
i, ha->raw[i].id_list[j]));
pdef = (gdth_defcnt_str *)buf;
gdtcmd->Service = CACHESERVICE;
gdtcmd->OpCode = GDT_IOCTL;
gdtcmd->u.ioctl.p_param = paddr;
gdtcmd->u.ioctl.param_size = sizeof(gdth_defcnt_str);
gdtcmd->u.ioctl.subfunc = SCSI_DEF_CNT | L_CTRL_PATTERN;
gdtcmd->u.ioctl.channel =
ha->raw[i].address | ha->raw[i].id_list[j];
pdef->sddc_type = 0x08;
if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
size = sprintf(buffer+len,
" Grown Defects:\t%d\n",
pdef->sddc_cnt);
len += size; pos = begin + len;
}
}
if (pos < offset) {
len = 0;
begin = pos;
}
if (pos > offset + length)
goto stop_output;
}
}
gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
if (!flag) {
size = sprintf(buffer+len, "\n --\n");
len += size; pos = begin + len;
}
/* 3. about logical drives */
size = sprintf(buffer+len,"\nLogical Drives:");
len += size; pos = begin + len;
flag = FALSE;
buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
if (!buf)
goto stop_output;
for (i = 0; i < MAX_LDRIVES; ++i) {
if (!ha->hdr[i].is_logdrv)
continue;
drv_no = i;
j = k = 0;
is_mirr = FALSE;
do {
/* 3.a log. drive info */
TRACE2(("cache_drv_info() drive no %d\n",drv_no));
pcdi = (gdth_cdrinfo_str *)buf;
gdtcmd->Service = CACHESERVICE;
gdtcmd->OpCode = GDT_IOCTL;
gdtcmd->u.ioctl.p_param = paddr;
gdtcmd->u.ioctl.param_size = sizeof(gdth_cdrinfo_str);
gdtcmd->u.ioctl.subfunc = CACHE_DRV_INFO;
gdtcmd->u.ioctl.channel = drv_no;
if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
break;
pcdi->ld_dtype >>= 16;
j++;
if (pcdi->ld_dtype > 2) {
strcpy(hrec, "missing");
} else if (pcdi->ld_error & 1) {
strcpy(hrec, "fault");
} else if (pcdi->ld_error & 2) {
strcpy(hrec, "invalid");
k++; j--;
} else {
strcpy(hrec, "ok");
}
if (drv_no == i) {
size = sprintf(buffer+len,
"\n Number: \t%-2d \tStatus: \t%s\n",
drv_no, hrec);
len += size; pos = begin + len;
flag = TRUE;
no_mdrv = pcdi->cd_ldcnt;
if (no_mdrv > 1 || pcdi->ld_slave != -1) {
is_mirr = TRUE;
strcpy(hrec, "RAID-1");
} else if (pcdi->ld_dtype == 0) {
strcpy(hrec, "Disk");
} else if (pcdi->ld_dtype == 1) {
strcpy(hrec, "RAID-0");
} else if (pcdi->ld_dtype == 2) {
strcpy(hrec, "Chain");
} else {
strcpy(hrec, "???");
}
size = sprintf(buffer+len,
" Capacity [MB]:\t%-6d \tType: \t%s\n",
pcdi->ld_blkcnt/(1024*1024/pcdi->ld_blksize),
hrec);
len += size; pos = begin + len;
} else {
size = sprintf(buffer+len,
" Slave Number: \t%-2d \tStatus: \t%s\n",
drv_no & 0x7fff, hrec);
len += size; pos = begin + len;
}
drv_no = pcdi->ld_slave;
if (pos < offset) {
len = 0;
begin = pos;
}
if (pos > offset + length)
goto stop_output;
} while (drv_no != -1);
if (is_mirr) {
size = sprintf(buffer+len,
" Missing Drv.: \t%-2d \tInvalid Drv.: \t%d\n",
no_mdrv - j - k, k);
len += size; pos = begin + len;
}
if (!ha->hdr[i].is_arraydrv)
strcpy(hrec, "--");
else
sprintf(hrec, "%d", ha->hdr[i].master_no);
size = sprintf(buffer+len,
" To Array Drv.:\t%s\n", hrec);
len += size; pos = begin + len;
if (pos < offset) {
len = 0;
begin = pos;
}
if (pos > offset + length)
goto stop_output;
}
gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
if (!flag) {
size = sprintf(buffer+len, "\n --\n");
len += size; pos = begin + len;
}
/* 4. about array drives */
size = sprintf(buffer+len,"\nArray Drives:");
len += size; pos = begin + len;
flag = FALSE;
buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
if (!buf)
goto stop_output;
for (i = 0; i < MAX_LDRIVES; ++i) {
if (!(ha->hdr[i].is_arraydrv && ha->hdr[i].is_master))
continue;
/* 4.a array drive info */
TRACE2(("array_info() drive no %d\n",i));
pai = (gdth_arrayinf_str *)buf;
gdtcmd->Service = CACHESERVICE;
gdtcmd->OpCode = GDT_IOCTL;
gdtcmd->u.ioctl.p_param = paddr;
gdtcmd->u.ioctl.param_size = sizeof(gdth_arrayinf_str);
gdtcmd->u.ioctl.subfunc = ARRAY_INFO | LA_CTRL_PATTERN;
gdtcmd->u.ioctl.channel = i;
if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
if (pai->ai_state == 0)
strcpy(hrec, "idle");
else if (pai->ai_state == 2)
strcpy(hrec, "build");
else if (pai->ai_state == 4)
strcpy(hrec, "ready");
else if (pai->ai_state == 6)
strcpy(hrec, "fail");
else if (pai->ai_state == 8 || pai->ai_state == 10)
strcpy(hrec, "rebuild");
else
strcpy(hrec, "error");
if (pai->ai_ext_state & 0x10)
strcat(hrec, "/expand");
else if (pai->ai_ext_state & 0x1)
strcat(hrec, "/patch");
size = sprintf(buffer+len,
"\n Number: \t%-2d \tStatus: \t%s\n",
i,hrec);
len += size; pos = begin + len;
flag = TRUE;
if (pai->ai_type == 0)
strcpy(hrec, "RAID-0");
else if (pai->ai_type == 4)
strcpy(hrec, "RAID-4");
else if (pai->ai_type == 5)
strcpy(hrec, "RAID-5");
else
strcpy(hrec, "RAID-10");
size = sprintf(buffer+len,
" Capacity [MB]:\t%-6d \tType: \t%s\n",
pai->ai_size/(1024*1024/pai->ai_secsize),
hrec);
len += size; pos = begin + len;
if (pos < offset) {
len = 0;
begin = pos;
}
if (pos > offset + length)
goto stop_output;
}
}
gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
if (!flag) {
size = sprintf(buffer+len, "\n --\n");
len += size; pos = begin + len;
}
/* 5. about host drives */
size = sprintf(buffer+len,"\nHost Drives:");
len += size; pos = begin + len;
flag = FALSE;
buf = gdth_ioctl_alloc(ha, sizeof(gdth_hget_str), FALSE, &paddr);
if (!buf)
goto stop_output;
for (i = 0; i < MAX_LDRIVES; ++i) {
if (!ha->hdr[i].is_logdrv ||
(ha->hdr[i].is_arraydrv && !ha->hdr[i].is_master))
continue;
/* 5.a get host drive list */
TRACE2(("host_get() drv_no %d\n",i));
phg = (gdth_hget_str *)buf;
gdtcmd->Service = CACHESERVICE;
gdtcmd->OpCode = GDT_IOCTL;
gdtcmd->u.ioctl.p_param = paddr;
gdtcmd->u.ioctl.param_size = sizeof(gdth_hget_str);
gdtcmd->u.ioctl.subfunc = HOST_GET | LA_CTRL_PATTERN;
gdtcmd->u.ioctl.channel = i;
phg->entries = MAX_HDRIVES;
phg->offset = GDTOFFSOF(gdth_hget_str, entry[0]);
if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
ha->hdr[i].ldr_no = i;
ha->hdr[i].rw_attribs = 0;
ha->hdr[i].start_sec = 0;
} else {
for (j = 0; j < phg->entries; ++j) {
k = phg->entry[j].host_drive;
if (k >= MAX_LDRIVES)
continue;
ha->hdr[k].ldr_no = phg->entry[j].log_drive;
ha->hdr[k].rw_attribs = phg->entry[j].rw_attribs;
ha->hdr[k].start_sec = phg->entry[j].start_sec;
}
}
}
gdth_ioctl_free(ha, sizeof(gdth_hget_str), buf, paddr);
for (i = 0; i < MAX_HDRIVES; ++i) {
if (!(ha->hdr[i].present))
continue;
size = sprintf(buffer+len,
"\n Number: \t%-2d \tArr/Log. Drive:\t%d\n",
i, ha->hdr[i].ldr_no);
len += size; pos = begin + len;
flag = TRUE;
size = sprintf(buffer+len,
" Capacity [MB]:\t%-6d \tStart Sector: \t%d\n",
(ulong32)(ha->hdr[i].size/2048), ha->hdr[i].start_sec);
len += size; pos = begin + len;
if (pos < offset) {
len = 0;
begin = pos;
}
if (pos > offset + length)
goto stop_output;
}
if (!flag) {
size = sprintf(buffer+len, "\n --\n");
len += size; pos = begin + len;
}
}
/* controller events */
size = sprintf(buffer+len,"\nController Events:\n");
len += size; pos = begin + len;
for (id = -1;;) {
id = gdth_read_event(ha, id, estr);
if (estr->event_source == 0)
break;
if (estr->event_data.eu.driver.ionode == ha->hanum &&
estr->event_source == ES_ASYNC) {
gdth_log_event(&estr->event_data, hrec);
do_gettimeofday(&tv);
sec = (int)(tv.tv_sec - estr->first_stamp);
if (sec < 0) sec = 0;
size = sprintf(buffer+len," date- %02d:%02d:%02d\t%s\n",
sec/3600, sec%3600/60, sec%60, hrec);
len += size; pos = begin + len;
if (pos < offset) {
len = 0;
begin = pos;
}
if (pos > offset + length)
goto stop_output;
}
if (id == -1)
break;
}
stop_output:
*start = buffer +(offset-begin);
len -= (offset-begin);
if (len > length)
len = length;
TRACE2(("get_info() len %d pos %d begin %d offset %d length %d size %d\n",
len,(int)pos,(int)begin,(int)offset,length,size));
rc = len;
free_fail:
kfree(gdtcmd);
kfree(estr);
return rc;
}
static char *gdth_ioctl_alloc(gdth_ha_str *ha, int size, int scratch,
ulong64 *paddr)
{
ulong flags;
char *ret_val;
if (size == 0)
return NULL;
spin_lock_irqsave(&ha->smp_lock, flags);
if (!ha->scratch_busy && size <= GDTH_SCRATCH) {
ha->scratch_busy = TRUE;
ret_val = ha->pscratch;
*paddr = ha->scratch_phys;
} else if (scratch) {
ret_val = NULL;
} else {
dma_addr_t dma_addr;
ret_val = pci_alloc_consistent(ha->pdev, size, &dma_addr);
*paddr = dma_addr;
}
spin_unlock_irqrestore(&ha->smp_lock, flags);
return ret_val;
}
static void gdth_ioctl_free(gdth_ha_str *ha, int size, char *buf, ulong64 paddr)
{
ulong flags;
if (buf == ha->pscratch) {
spin_lock_irqsave(&ha->smp_lock, flags);
ha->scratch_busy = FALSE;
spin_unlock_irqrestore(&ha->smp_lock, flags);
} else {
pci_free_consistent(ha->pdev, size, buf, paddr);
}
}
#ifdef GDTH_IOCTL_PROC
static int gdth_ioctl_check_bin(gdth_ha_str *ha, ushort size)
{
ulong flags;
int ret_val;
spin_lock_irqsave(&ha->smp_lock, flags);
ret_val = FALSE;
if (ha->scratch_busy) {
if (((gdth_iord_str *)ha->pscratch)->size == (ulong32)size)
ret_val = TRUE;
}
spin_unlock_irqrestore(&ha->smp_lock, flags);
return ret_val;
}
#endif
static void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id)
{
ulong flags;
int i;
Scsi_Cmnd *scp;
struct gdth_cmndinfo *cmndinfo;
unchar b, t;
spin_lock_irqsave(&ha->smp_lock, flags);
for (i = 0; i < GDTH_MAXCMDS; ++i) {
scp = ha->cmd_tab[i].cmnd;
cmndinfo = gdth_cmnd_priv(scp);
b = scp->device->channel;
t = scp->device->id;
if (!SPECIAL_SCP(scp) && t == (unchar)id &&
b == (unchar)busnum) {
cmndinfo->wait_for_completion = 0;
spin_unlock_irqrestore(&ha->smp_lock, flags);
while (!cmndinfo->wait_for_completion)
barrier();
spin_lock_irqsave(&ha->smp_lock, flags);
}
}
spin_unlock_irqrestore(&ha->smp_lock, flags);
}
static void gdth_stop_timeout(gdth_ha_str *ha, int busnum, int id)
{
ulong flags;
Scsi_Cmnd *scp;
unchar b, t;
spin_lock_irqsave(&ha->smp_lock, flags);
for (scp = ha->req_first; scp; scp = (Scsi_Cmnd *)scp->SCp.ptr) {
struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
if (!cmndinfo->internal_command) {
b = scp->device->channel;
t = scp->device->id;
if (t == (unchar)id && b == (unchar)busnum) {
TRACE2(("gdth_stop_timeout(): update_timeout()\n"));
cmndinfo->timeout = gdth_update_timeout(scp, 0);
}
}
}
spin_unlock_irqrestore(&ha->smp_lock, flags);
}
static void gdth_start_timeout(gdth_ha_str *ha, int busnum, int id)
{
ulong flags;
Scsi_Cmnd *scp;
unchar b, t;
spin_lock_irqsave(&ha->smp_lock, flags);
for (scp = ha->req_first; scp; scp = (Scsi_Cmnd *)scp->SCp.ptr) {
struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
if (!cmndinfo->internal_command) {
b = scp->device->channel;
t = scp->device->id;
if (t == (unchar)id && b == (unchar)busnum) {
TRACE2(("gdth_start_timeout(): update_timeout()\n"));
gdth_update_timeout(scp, cmndinfo->timeout);
}
}
}
spin_unlock_irqrestore(&ha->smp_lock, flags);
}
static int gdth_update_timeout(Scsi_Cmnd *scp, int timeout)
{
int oldto;
oldto = scp->timeout_per_command;
scp->timeout_per_command = timeout;
if (timeout == 0) {
del_timer(&scp->eh_timeout);
scp->eh_timeout.data = (unsigned long) NULL;
scp->eh_timeout.expires = 0;
} else {
if (scp->eh_timeout.data != (unsigned long) NULL)
del_timer(&scp->eh_timeout);
scp->eh_timeout.data = (unsigned long) scp;
scp->eh_timeout.expires = jiffies + timeout;
add_timer(&scp->eh_timeout);
}
return oldto;
}