Viewing file:  eata_pio_proc.c (3.87 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/*
* eata_set_info
* buffer : pointer to the data that has been written to the hostfile
* length : number of bytes written to the hostfile
* HBA_ptr: pointer to the Scsi_Host struct
*/
int eata_pio_set_info(char *buffer, int length, struct Scsi_Host *HBA_ptr)
{
DBG(DBG_PROC_WRITE, printk("%s\n", buffer));
return(-ENOSYS); /* Currently this is a no-op */
}
/*
* 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);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-indent-level: 4
* c-brace-imaginary-offset: 0
* c-brace-offset: -4
* c-argdecl-indent: 4
* c-label-offset: -4
* c-continued-statement-offset: 4
* c-continued-brace-offset: 0
* tab-width: 8
* End:
*/
|