Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 651 insertions, 0 deletions

diff --git a/drivers/scsi/gdth_proc.c b/drivers/scsi/gdth_proc.c
new file mode 100644
index 000000000..3a9751a80
--- /dev/null
+++ b/drivers/scsi/gdth_proc.c
@@ -0,0 +1,651 @@
+// 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;
+    u64         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);
+}
+
+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;
+    u64 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 += snprintf(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);
+
+#ifdef GDTH_DMA_STATISTICS
+    /* controller statistics */
+    seq_puts(m, "\nController Statistics:\n");
+    seq_printf(m,
+                   " 32-bit DMA buffer:\t%lu\t64-bit DMA buffer:\t%lu\n",
+                   ha->dma32_cnt, ha->dma64_cnt);
+#endif
+
+    if (ha->more_proc) {
+        /* more information: 2. about physical devices */
+        seq_puts(m, "\nPhysical Devices:");
+        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(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);
+                    }
+                }
+            }
+        }
+        gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
+
+        if (!flag)
+            seq_puts(m, "\n --\n");
+
+        /* 3. about logical drives */
+        seq_puts(m, "\nLogical Drives:");
+        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) {
+                    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);
+        }       
+        gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
+        
+        if (!flag)
+            seq_puts(m, "\n --\n");
+
+        /* 4. about array drives */
+        seq_puts(m, "\nArray Drives:");
+        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");
+                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);
+            }
+        }
+        gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
+        
+        if (!flag)
+            seq_puts(m, "\n --\n");
+
+        /* 5. about host drives */
+        seq_puts(m, "\nHost Drives:");
+        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;
+              
+            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 char *gdth_ioctl_alloc(gdth_ha_str *ha, int size, int scratch,
+                              u64 *paddr)
+{
+    unsigned long 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, u64 paddr)
+{
+    unsigned long 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, u16 size)
+{
+    unsigned long 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 == (u32)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)
+{
+    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);
+}