| // SPDX-License-Identifier: GPL-2.0 |
| /* gdth_proc.c |
| * $Id: gdth_proc.c,v 1.43 2006/01/11 16:15:00 achim Exp $ |
| */ |
| |
| #include <linux/completion.h> |
| #include <linux/slab.h> |
| |
| int gdth_set_info(struct Scsi_Host *host, char *buffer, int length) |
| { |
| gdth_ha_str *ha = shost_priv(host); |
| 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; |
| |
| 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) { |
| unsigned long flags; |
| |
| BUILD_BUG_ON(sizeof(gdth_cpar_str) > GDTH_SCRATCH); |
| |
| spin_lock_irqsave(&ha->smp_lock, flags); |
| if (ha->scratch_busy) { |
| spin_unlock_irqrestore(&ha->smp_lock, flags); |
| return -EBUSY; |
| } |
| ha->scratch_busy = TRUE; |
| spin_unlock_irqrestore(&ha->smp_lock, flags); |
| |
| 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 = ha->scratch_phys; |
| 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); |
| |
| spin_lock_irqsave(&ha->smp_lock, flags); |
| ha->scratch_busy = FALSE; |
| spin_unlock_irqrestore(&ha->smp_lock, flags); |
| |
| printk("Done.\n"); |
| return(orig_length); |
| } |
| |
| printk("GDT: Unknown command: %s Length: %d\n",buffer,length); |
| return(-EINVAL); |
| } |
| |
| int gdth_show_info(struct seq_file *m, struct Scsi_Host *host) |
| { |
| gdth_ha_str *ha = shost_priv(host); |
| int hlen; |
| int id, i, j, k, sec, flag; |
| int no_mdrv = 0, drv_no, is_mirr; |
| u32 cnt; |
| dma_addr_t paddr; |
| int rc = -ENOMEM; |
| |
| gdth_cmd_str *gdtcmd; |
| gdth_evt_str *estr; |
| char hrec[277]; |
| |
| 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 */ |
| seq_puts(m, "Driver Parameters:\n"); |
| if (reserve_list[0] == 0xff) |
| strcpy(hrec, "--"); |
| else { |
| hlen = sprintf(hrec, "%d", reserve_list[0]); |
| for (i = 1; i < MAX_RES_ARGS; i++) { |
| if (reserve_list[i] == 0xff) |
| break; |
| hlen += scnprintf(hrec + hlen, 161 - hlen, ",%d", reserve_list[i]); |
| } |
| } |
| seq_printf(m, |
| " reserve_mode: \t%d \treserve_list: \t%s\n", |
| reserve_mode, hrec); |
| seq_printf(m, |
| " max_ids: \t%-3d \thdr_channel: \t%d\n", |
| max_ids, hdr_channel); |
| |
| /* controller information */ |
| seq_puts(m, "\nDisk Array Controller Information:\n"); |
| seq_printf(m, |
| " Number: \t%d \tName: \t%s\n", |
| ha->hanum, ha->binfo.type_string); |
| |
| seq_printf(m, |
| " Driver Ver.: \t%-10s\tFirmware Ver.: \t", |
| GDTH_VERSION_STR); |
| if (ha->more_proc) |
| seq_printf(m, "%d.%02d.%02d-%c%03X\n", |
| (u8)(ha->binfo.upd_fw_ver>>24), |
| (u8)(ha->binfo.upd_fw_ver>>16), |
| (u8)(ha->binfo.upd_fw_ver), |
| ha->bfeat.raid ? 'R':'N', |
| ha->binfo.upd_revision); |
| else |
| seq_printf(m, "%d.%02d\n", (u8)(ha->cpar.version>>8), |
| (u8)(ha->cpar.version)); |
| |
| if (ha->more_proc) |
| /* more information: 1. about controller */ |
| seq_printf(m, |
| " Serial No.: \t0x%8X\tCache RAM size:\t%d KB\n", |
| ha->binfo.ser_no, ha->binfo.memsize / 1024); |
| |
| if (ha->more_proc) { |
| size_t size = max_t(size_t, GDTH_SCRATCH, sizeof(gdth_hget_str)); |
| |
| /* more information: 2. about physical devices */ |
| seq_puts(m, "\nPhysical Devices:"); |
| flag = FALSE; |
| |
| buf = dma_alloc_coherent(&ha->pdev->dev, size, &paddr, GFP_KERNEL); |
| 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(u32)) / |
| 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; |
| seq_printf(m, |
| "\n Chn/ID/LUN: \t%c/%02d/%d \tName: \t%s\n", |
| 'A'+i,pdi->target_id,pdi->lun,hrec); |
| flag = TRUE; |
| pdi->no_ldrive &= 0xffff; |
| if (pdi->no_ldrive == 0xffff) |
| strcpy(hrec,"--"); |
| else |
| sprintf(hrec,"%d",pdi->no_ldrive); |
| seq_printf(m, |
| " Capacity [MB]:\t%-6d \tTo Log. Drive: \t%s\n", |
| pdi->blkcnt/(1024*1024/pdi->blksize), |
| hrec); |
| } 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) { |
| seq_printf(m, |
| " Retries: \t%-6d \tReassigns: \t%d\n", |
| pds->list[k].retries, |
| pds->list[k].reassigns); |
| 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) { |
| seq_printf(m, |
| " Grown Defects:\t%d\n", |
| pdef->sddc_cnt); |
| } |
| } |
| } |
| } |
| |
| if (!flag) |
| seq_puts(m, "\n --\n"); |
| |
| /* 3. about logical drives */ |
| seq_puts(m, "\nLogical Drives:"); |
| flag = FALSE; |
| |
| 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) { |
| seq_printf(m, |
| "\n Number: \t%-2d \tStatus: \t%s\n", |
| drv_no, hrec); |
| 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, "???"); |
| } |
| seq_printf(m, |
| " Capacity [MB]:\t%-6d \tType: \t%s\n", |
| pcdi->ld_blkcnt/(1024*1024/pcdi->ld_blksize), |
| hrec); |
| } else { |
| seq_printf(m, |
| " Slave Number: \t%-2d \tStatus: \t%s\n", |
| drv_no & 0x7fff, hrec); |
| } |
| drv_no = pcdi->ld_slave; |
| } while (drv_no != -1); |
| |
| if (is_mirr) |
| seq_printf(m, |
| " Missing Drv.: \t%-2d \tInvalid Drv.: \t%d\n", |
| no_mdrv - j - k, k); |
| |
| if (!ha->hdr[i].is_arraydrv) |
| strcpy(hrec, "--"); |
| else |
| sprintf(hrec, "%d", ha->hdr[i].master_no); |
| seq_printf(m, |
| " To Array Drv.:\t%s\n", hrec); |
| } |
| |
| if (!flag) |
| seq_puts(m, "\n --\n"); |
| |
| /* 4. about array drives */ |
| seq_puts(m, "\nArray Drives:"); |
| flag = FALSE; |
| |
| 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"); |
| seq_printf(m, |
| "\n Number: \t%-2d \tStatus: \t%s\n", |
| i,hrec); |
| 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"); |
| seq_printf(m, |
| " Capacity [MB]:\t%-6d \tType: \t%s\n", |
| pai->ai_size/(1024*1024/pai->ai_secsize), |
| hrec); |
| } |
| } |
| |
| if (!flag) |
| seq_puts(m, "\n --\n"); |
| |
| /* 5. about host drives */ |
| seq_puts(m, "\nHost Drives:"); |
| flag = FALSE; |
| |
| 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; |
| } |
| } |
| } |
| dma_free_coherent(&ha->pdev->dev, size, buf, paddr); |
| |
| for (i = 0; i < MAX_HDRIVES; ++i) { |
| if (!(ha->hdr[i].present)) |
| continue; |
| |
| seq_printf(m, |
| "\n Number: \t%-2d \tArr/Log. Drive:\t%d\n", |
| i, ha->hdr[i].ldr_no); |
| flag = TRUE; |
| |
| seq_printf(m, |
| " Capacity [MB]:\t%-6d \tStart Sector: \t%d\n", |
| (u32)(ha->hdr[i].size/2048), ha->hdr[i].start_sec); |
| } |
| |
| if (!flag) |
| seq_puts(m, "\n --\n"); |
| } |
| |
| /* controller events */ |
| seq_puts(m, "\nController Events:\n"); |
| |
| 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); |
| |
| /* |
| * Elapsed seconds subtraction with unsigned operands is |
| * safe from wrap around in year 2106. Executes as: |
| * operand a + (2's complement operand b) + 1 |
| */ |
| |
| sec = (int)((u32)ktime_get_real_seconds() - estr->first_stamp); |
| if (sec < 0) sec = 0; |
| seq_printf(m," date- %02d:%02d:%02d\t%s\n", |
| sec/3600, sec%3600/60, sec%60, hrec); |
| } |
| if (id == -1) |
| break; |
| } |
| stop_output: |
| rc = 0; |
| free_fail: |
| kfree(gdtcmd); |
| kfree(estr); |
| return rc; |
| } |
| |
| static void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id) |
| { |
| unsigned long flags; |
| int i; |
| struct scsi_cmnd *scp; |
| struct gdth_cmndinfo *cmndinfo; |
| u8 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 == (u8)id && |
| b == (u8)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); |
| } |
