diff options
Diffstat (limited to 'linux/src/drivers/scsi/eata_pio_proc.c')
| -rw-r--r-- | linux/src/drivers/scsi/eata_pio_proc.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/linux/src/drivers/scsi/eata_pio_proc.c b/linux/src/drivers/scsi/eata_pio_proc.c new file mode 100644 index 0000000..54783f2 --- /dev/null +++ b/linux/src/drivers/scsi/eata_pio_proc.c @@ -0,0 +1,135 @@ + +/* + * 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; + + scd = scsi_devices; + + size = sprintf(buffer+len,"Attached devices: %s\n", (scd)?"":"none"); + len += size; + pos = begin + len; + + while (scd) { + if (scd->host == HBA_ptr) { + 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; + } + scd = scd->next; + } + + 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: + */ + |