/* Prototype: int powertecscsi_proc_info(char *buffer, char **start, off_t offset,
* int length, int host_no, int inout)
* Purpose : Return information about the driver to a user process accessing
* the /proc filesystem.
* Params : buffer - a buffer to write information to
* start - a pointer into this buffer set by this routine to the start
* of the required information.
* offset - offset into information that we have read upto.
* length - length of buffer
* host_no - host number to return information for
* inout - 0 for reading, 1 for writing.
* Returns : length of data written to buffer.
*/
int powertecscsi_proc_info(char *buffer, char **start, off_t offset,
int length, int host_no, int inout)
{
int pos, begin;
struct Scsi_Host *host = scsi_hostlist;
PowerTecScsi_Info *info;
Scsi_Device *scd;
while (host) {
if (host->host_no == host_no)
break;
host = host->next;
}
if (!host)
return 0;
if (inout == 1)
return powertecscsi_set_proc_info(host, buffer, length);
info = (PowerTecScsi_Info *)host->hostdata;
begin = 0;
pos = sprintf(buffer,
"PowerTec SCSI driver version %d.%d.%d\n",
VER_MAJOR, VER_MINOR, VER_PATCH);
pos += sprintf(buffer + pos,
"Address: %08lX IRQ : %d DMA : %d\n"
"FAS : %-10s TERM: %-3s\n\n"
"Statistics:\n",
host->io_port, host->irq, host->dma_channel,
info->info.scsi.type, info->control.terms ? "on" : "off");
pos += sprintf(buffer+pos,
"Queued commands: %-10u Issued commands: %-10u\n"
"Done commands : %-10u Reads : %-10u\n"
"Writes : %-10u Others : %-10u\n"
"Disconnects : %-10u Aborts : %-10u\n"
"Resets : %-10u\n",
info->info.stats.queues, info->info.stats.removes,
info->info.stats.fins, info->info.stats.reads,
info->info.stats.writes, info->info.stats.miscs,
info->info.stats.disconnects, info->info.stats.aborts,
info->info.stats.resets);
pos += sprintf (buffer+pos, "\nAttached devices:%s\n", host->host_queue ? "" : " none");
for (scd = host->host_queue; scd; scd = scd->next) {
int len;
proc_print_scsidevice (scd, buffer, &len, pos);
pos += len;
pos += sprintf (buffer+pos, "Extensions: ");
if (scd->tagged_supported)
pos += sprintf (buffer+pos, "TAG %sabled [%d] ",
scd->tagged_queue ? "en" : "dis",
scd->current_tag);
pos += sprintf (buffer+pos, "\n");
if (pos + begin < offset) {
begin += pos;
pos = 0;
}
if (pos + begin > offset + length)
break;
}
*start = buffer + (offset - begin);
pos -= offset - begin;
if (pos > length)
pos = length;
return pos;
}
/*
* eata_proc_info
* inout : decides on the direction of the dataflow and the meaning of the
* variables
* buffer: If inout==FALSE data is being written to it else read from it
* *start: If inout==FALSE start of the valid data in the buffer
* offset: If inout==FALSE offset from the beginning of the imaginary file
* from which we start writing into the buffer
* length: If inout==FALSE max number of bytes to be written into the buffer
* else number of bytes in the buffer
*/
int eata_pio_proc_info(char *buffer, char **start, off_t offset, int length,
int hostno, int inout)
{
Scsi_Device *scd;
struct Scsi_Host *HBA_ptr;
static u8 buff[512];
int i;
int size, len = 0;
off_t begin = 0;
off_t pos = 0;
HBA_ptr = first_HBA;
for (i = 1; i <= registered_HBAs; i++) {
if (HBA_ptr->host_no == hostno)
break;
HBA_ptr = SD(HBA_ptr)->next;
}
if(inout == TRUE) /* Has data been written to the file ? */
return(eata_pio_set_info(buffer, length, HBA_ptr));
if (offset == 0)
memset(buff, 0, sizeof(buff));
size = sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: "
"%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB);
len += size; pos = begin + len;
size = sprintf(buffer + len, "queued commands: %10ld\n"
"processed interrupts:%10ld\n", queue_counter, int_counter);
len += size; pos = begin + len;
size = sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n",
HBA_ptr->host_no, SD(HBA_ptr)->name);
len += size;
pos = begin + len;
size = sprintf(buffer + len, "Firmware revision: v%s\n",
SD(HBA_ptr)->revision);
len += size;
pos = begin + len;
size = sprintf(buffer + len, "IO: PIO\n");
len += size;
pos = begin + len;
size = sprintf(buffer + len, "Base IO : %#.4x\n", (u32) HBA_ptr->base);
len += size;
pos = begin + len;
size = sprintf(buffer + len, "Host Bus: %s\n",
(SD(HBA_ptr)->bustype == 'P')?"PCI ":
(SD(HBA_ptr)->bustype == 'E')?"EISA":"ISA ");
len += size;
pos = begin + len;
if (pos < offset) {
len = 0;
begin = pos;
}
if (pos > offset + length)
goto stop_output;
size = sprintf(buffer+len,"Attached devices: %s\n",
(HBA_ptr->host_queue)?"":"none");
len += size;
pos = begin + len;
for(scd = HBA_ptr->host_queue; scd; scd = scd->next) {
proc_print_scsidevice(scd, buffer, &size, len);
len += size;
pos = begin + len;
if (pos < offset) {
len = 0;
begin = pos;
}
if (pos > offset + length)
goto stop_output;
}
stop_output:
DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len));
*start=buffer+(offset-begin); /* Start of wanted data */
len-=(offset-begin); /* Start slop */
if(len>length)
len = length; /* Ending slop */
DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len));
return (len);
}
