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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [scsi/] [eata_pio_proc.c] - Blame information for rev 1774

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Line No. Rev Author Line
1 1275 phoenix
/*
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 * eata_set_info
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 * buffer : pointer to the data that has been written to the hostfile
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 * length : number of bytes written to the hostfile
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 * HBA_ptr: pointer to the Scsi_Host struct
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 */
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int eata_pio_set_info(char *buffer, int length, struct Scsi_Host *HBA_ptr)
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{
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    DBG(DBG_PROC_WRITE, printk("%s\n", buffer));
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    return(-ENOSYS);  /* Currently this is a no-op */
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}
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/*
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 * eata_proc_info
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 * inout : decides on the direction of the dataflow and the meaning of the
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 *         variables
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 * buffer: If inout==FALSE data is being written to it else read from it
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 * *start: If inout==FALSE start of the valid data in the buffer
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 * offset: If inout==FALSE offset from the beginning of the imaginary file
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 *         from which we start writing into the buffer
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 * length: If inout==FALSE max number of bytes to be written into the buffer
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 *         else number of bytes in the buffer
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 */
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int eata_pio_proc_info(char *buffer, char **start, off_t offset, int length,
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                       int hostno, int inout)
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{
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    Scsi_Device *scd;
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    struct Scsi_Host *HBA_ptr;
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    static u8 buff[512];
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    int i;
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    int   size, len = 0;
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    off_t begin = 0;
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    off_t pos = 0;
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    HBA_ptr = first_HBA;
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    for (i = 1; i <= registered_HBAs; i++) {
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        if (HBA_ptr->host_no == hostno)
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            break;
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        HBA_ptr = SD(HBA_ptr)->next;
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    }
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    if(inout == TRUE) /* Has data been written to the file ? */
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        return(eata_pio_set_info(buffer, length, HBA_ptr));
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    if (offset == 0)
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        memset(buff, 0, sizeof(buff));
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    size = sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: "
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                   "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB);
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    len += size; pos = begin + len;
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    size = sprintf(buffer + len, "queued commands:     %10ld\n"
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                   "processed interrupts:%10ld\n", queue_counter, int_counter);
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    len += size; pos = begin + len;
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    size = sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n",
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                   HBA_ptr->host_no, SD(HBA_ptr)->name);
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    len += size;
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    pos = begin + len;
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    size = sprintf(buffer + len, "Firmware revision: v%s\n",
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                   SD(HBA_ptr)->revision);
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    len += size;
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    pos = begin + len;
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    size = sprintf(buffer + len, "IO: PIO\n");
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    len += size;
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    pos = begin + len;
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    size = sprintf(buffer + len, "Base IO : %#.4x\n", (u32) HBA_ptr->base);
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    len += size;
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    pos = begin + len;
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    size = sprintf(buffer + len, "Host Bus: %s\n",
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                   (SD(HBA_ptr)->bustype == 'P')?"PCI ":
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                   (SD(HBA_ptr)->bustype == 'E')?"EISA":"ISA ");
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    len += size;
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    pos = begin + len;
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    if (pos < offset) {
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        len = 0;
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        begin = pos;
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    }
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    if (pos > offset + length)
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        goto stop_output;
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    size = sprintf(buffer+len,"Attached devices: %s\n",
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                   (HBA_ptr->host_queue)?"":"none");
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    len += size;
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    pos = begin + len;
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    for(scd = HBA_ptr->host_queue; scd; scd = scd->next) {
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            proc_print_scsidevice(scd, buffer, &size, len);
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            len += size;
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            pos = begin + len;
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            if (pos < offset) {
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                len = 0;
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                begin = pos;
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            }
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            if (pos > offset + length)
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                goto stop_output;
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    }
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 stop_output:
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    DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len));
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    *start=buffer+(offset-begin);   /* Start of wanted data */
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    len-=(offset-begin);            /* Start slop */
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    if(len>length)
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        len = length;               /* Ending slop */
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    DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len));
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    return (len);
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}
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/*
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 * Overrides for Emacs so that we follow Linus's tabbing style.
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 * Emacs will notice this stuff at the end of the file and automatically
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 * adjust the settings for this buffer only.  This must remain at the end
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 * of the file.
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 * ---------------------------------------------------------------------------
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 * Local variables:
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 * c-indent-level: 4
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 * c-brace-imaginary-offset: 0
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 * c-brace-offset: -4
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 * c-argdecl-indent: 4
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 * c-label-offset: -4
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 * c-continued-statement-offset: 4
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 * c-continued-brace-offset: 0
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 * tab-width: 8
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 * End:
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 */

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