sun3_scsi: add ->show_info()

Based on Al's changes to atari_scsi.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 78 insertions, 105 deletions

diff --git a/drivers/scsi/sun3_NCR5380.c b/drivers/scsi/sun3_NCR5380.c
index 7e12a2e4e0a3..636bbe0ea84c 100644
--- a/drivers/scsi/sun3_NCR5380.c
+++ b/drivers/scsi/sun3_NCR5380.c
@@ -661,121 +661,94 @@ static void __init NCR5380_print_options (struct Scsi_Host *instance)
  * Inputs : instance, pointer to this instance.  
  */
 
-static void NCR5380_print_status (struct Scsi_Host *instance)
+static void lprint_Scsi_Cmnd(Scsi_Cmnd *cmd)
 {
-    char *pr_bfr;
-    char *start;
-    int len;
-
-    NCR_PRINT(NDEBUG_ANY);
-    NCR_PRINT_PHASE(NDEBUG_ANY);
-
-    pr_bfr = (char *) __get_free_page(GFP_ATOMIC);
-    if (!pr_bfr) {
-        printk("NCR5380_print_status: no memory for print buffer\n");
-        return;
-    }
-    len = NCR5380_proc_info(instance, pr_bfr, &start, 0, PAGE_SIZE, 0);
-    pr_bfr[len] = 0;
-    printk("\n%s\n", pr_bfr);
-    free_page((unsigned long) pr_bfr);
+        int i, s;
+        unsigned char *command;
+        printk("scsi%d: destination target %d, lun %d\n",
+                H_NO(cmd), cmd->device->id, cmd->device->lun);
+        printk(KERN_CONT "        command = ");
+        command = cmd->cmnd;
+        printk(KERN_CONT "%2d (0x%02x)", command[0], command[0]);
+        for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
+                printk(KERN_CONT " %02x", command[i]);
+        printk("\n");
 }
 
-
-/******************************************/
-/*
- * /proc/scsi/[dtc pas16 t128 generic]/[0-ASC_NUM_BOARD_SUPPORTED]
- *
- * *buffer: I/O buffer
- * **start: if inout == FALSE pointer into buffer where user read should start
- * offset: current offset
- * length: length of buffer
- * hostno: Scsi_Host host_no
- * inout: TRUE - user is writing; FALSE - user is reading
- *
- * Return the number of bytes read from or written
-*/
-
-#undef SPRINTF
-#define SPRINTF(fmt,args...) \
-  do { if (pos + strlen(fmt) + 20 /* slop */ < buffer + length) \
-         pos += sprintf(pos, fmt , ## args); } while(0)
-static
-char *lprint_Scsi_Cmnd(struct scsi_cmnd *cmd, char *pos, char *buffer,
-                       int length);
-
-static int NCR5380_proc_info(struct Scsi_Host *instance, char *buffer,
-                             char **start, off_t offset, int length, int inout)
+static void NCR5380_print_status(struct Scsi_Host *instance)
 {
-    char *pos = buffer;
-    struct NCR5380_hostdata *hostdata;
-    struct scsi_cmnd *ptr;
-    unsigned long flags;
-    off_t begin = 0;
-#define check_offset()                          \
-    do {                                        \
-        if (pos - buffer < offset - begin) {    \
-            begin += pos - buffer;              \
-            pos = buffer;                       \
-        }                                       \
-    } while (0)
-
-    hostdata = (struct NCR5380_hostdata *)instance->hostdata;
-
-    if (inout) { /* Has data been written to the file ? */
-        return(-ENOSYS);  /* Currently this is a no-op */
-    }
-    SPRINTF("NCR5380 core release=%d.\n", NCR5380_PUBLIC_RELEASE);
-    check_offset();
-    local_irq_save(flags);
-    SPRINTF("NCR5380: coroutine is%s running.\n", main_running ? "" : "n't");
-    check_offset();
-    if (!hostdata->connected)
-        SPRINTF("scsi%d: no currently connected command\n", HOSTNO);
-    else
-        pos = lprint_Scsi_Cmnd ((struct scsi_cmnd *) hostdata->connected,
-                                pos, buffer, length);
-    SPRINTF("scsi%d: issue_queue\n", HOSTNO);
-    check_offset();
-    for (ptr = (struct scsi_cmnd *) hostdata->issue_queue; ptr; ptr = NEXT(ptr))
-    {
-        pos = lprint_Scsi_Cmnd (ptr, pos, buffer, length);
-        check_offset();
-    }
-
-    SPRINTF("scsi%d: disconnected_queue\n", HOSTNO);
-    check_offset();
-    for (ptr = (struct scsi_cmnd *) hostdata->disconnected_queue; ptr;
-         ptr = NEXT(ptr)) {
-        pos = lprint_Scsi_Cmnd (ptr, pos, buffer, length);
-        check_offset();
-    }
+        struct NCR5380_hostdata *hostdata;
+        Scsi_Cmnd *ptr;
+        unsigned long flags;
+
+        NCR_PRINT(NDEBUG_ANY);
+        NCR_PRINT_PHASE(NDEBUG_ANY);
+
+        hostdata = (struct NCR5380_hostdata *)instance->hostdata;
+
+        printk("\nNCR5380 core release=%d.\n", NCR5380_PUBLIC_RELEASE);
+        local_irq_save(flags);
+        printk("NCR5380: coroutine is%s running.\n",
+                main_running ? "" : "n't");
+        if (!hostdata->connected)
+                printk("scsi%d: no currently connected command\n", HOSTNO);
+        else
+                lprint_Scsi_Cmnd((Scsi_Cmnd *) hostdata->connected);
+        printk("scsi%d: issue_queue\n", HOSTNO);
+        for (ptr = (Scsi_Cmnd *)hostdata->issue_queue; ptr; ptr = NEXT(ptr))
+                lprint_Scsi_Cmnd(ptr);
+
+        printk("scsi%d: disconnected_queue\n", HOSTNO);
+        for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr;
+             ptr = NEXT(ptr))
+                lprint_Scsi_Cmnd(ptr);
 
-    local_irq_restore(flags);
-    *start = buffer + (offset - begin);
-    if (pos - buffer < offset - begin)
-        return 0;
-    else if (pos - buffer - (offset - begin) < length)
-        return pos - buffer - (offset - begin);
-    return length;
+        local_irq_restore(flags);
+        printk("\n");
 }
 
-static char *lprint_Scsi_Cmnd(struct scsi_cmnd *cmd, char *pos, char *buffer,
-                              int length)
+static void show_Scsi_Cmnd(Scsi_Cmnd *cmd, struct seq_file *m)
 {
-    int i, s;
-    unsigned char *command;
-    SPRINTF("scsi%d: destination target %d, lun %d\n",
-            H_NO(cmd), cmd->device->id, cmd->device->lun);
-    SPRINTF("        command = ");
-    command = cmd->cmnd;
-    SPRINTF("%2d (0x%02x)", command[0], command[0]);
-    for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
-        SPRINTF(" %02x", command[i]);
-    SPRINTF("\n");
-    return pos;
+        int i, s;
+        unsigned char *command;
+        seq_printf(m, "scsi%d: destination target %d, lun %d\n",
+                H_NO(cmd), cmd->device->id, cmd->device->lun);
+        seq_printf(m, "        command = ");
+        command = cmd->cmnd;
+        seq_printf(m, "%2d (0x%02x)", command[0], command[0]);
+        for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
+                seq_printf(m, " %02x", command[i]);
+        seq_printf(m, "\n");
 }
 
+static int NCR5380_show_info(struct seq_file *m, struct Scsi_Host *instance)
+{
+        struct NCR5380_hostdata *hostdata;
+        Scsi_Cmnd *ptr;
+        unsigned long flags;
+
+        hostdata = (struct NCR5380_hostdata *)instance->hostdata;
+
+        seq_printf(m, "NCR5380 core release=%d.\n", NCR5380_PUBLIC_RELEASE);
+        local_irq_save(flags);
+        seq_printf(m, "NCR5380: coroutine is%s running.\n",
+                main_running ? "" : "n't");
+        if (!hostdata->connected)
+                seq_printf(m, "scsi%d: no currently connected command\n", HOSTNO);
+        else
+                show_Scsi_Cmnd((Scsi_Cmnd *) hostdata->connected, m);
+        seq_printf(m, "scsi%d: issue_queue\n", HOSTNO);
+        for (ptr = (Scsi_Cmnd *)hostdata->issue_queue; ptr; ptr = NEXT(ptr))
+                show_Scsi_Cmnd(ptr, m);
+
+        seq_printf(m, "scsi%d: disconnected_queue\n", HOSTNO);
+        for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr;
+             ptr = NEXT(ptr))
+                show_Scsi_Cmnd(ptr, m);
+
+        local_irq_restore(flags);
+        return 0;
+}
 
 /* 
  * Function : void NCR5380_init (struct Scsi_Host *instance)