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| author | Matthew Wilcox <matthew@wil.cx> | 2006-02-07 07:54:46 -0700 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-02-27 22:55:09 -0600 |
| commit | 6ea3c0b2dac0d6a857d6bc010e544f4c901fff78 (patch) | |
| tree | 0650d6e8b5be747eb192e558dd90e875ca7a13fb /drivers/scsi/53c700.c | |
| parent | b0dc1db15225d5801bf3105966c9ce12c5142013 (diff) | |
| download | lwn-6ea3c0b2dac0d6a857d6bc010e544f4c901fff78.tar.gz lwn-6ea3c0b2dac0d6a857d6bc010e544f4c901fff78.zip | |
[SCSI] Add spi_populate_*_msg functions
Introduce new helpers:
- spi_populate_width_msg()
- spi_populate_sync_msg()
- spi_populate_ppr_msg()
and use them in drivers which already enable the SPI transport.
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/53c700.c')
| -rw-r--r-- | drivers/scsi/53c700.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/drivers/scsi/53c700.c b/drivers/scsi/53c700.c index 4ce7438608ec..6a0f9506ea00 100644 --- a/drivers/scsi/53c700.c +++ b/drivers/scsi/53c700.c @@ -238,14 +238,6 @@ static char *NCR_700_SBCL_to_phase[] = { "MSG IN", }; -static __u8 NCR_700_SDTR_msg[] = { - 0x01, /* Extended message */ - 0x03, /* Extended message Length */ - 0x01, /* SDTR Extended message */ - NCR_700_MIN_PERIOD, - NCR_700_MAX_OFFSET -}; - /* This translates the SDTR message offset and period to a value * which can be loaded into the SXFER_REG. * @@ -266,7 +258,7 @@ NCR_700_offset_period_to_sxfer(struct NCR_700_Host_Parameters *hostdata, return 0; if(period < hostdata->min_period) { - printk(KERN_WARNING "53c700: Period %dns is less than this chip's minimum, setting to %d\n", period*4, NCR_700_SDTR_msg[3]*4); + printk(KERN_WARNING "53c700: Period %dns is less than this chip's minimum, setting to %d\n", period*4, NCR_700_MIN_PERIOD*4); period = hostdata->min_period; } XFERP = (period*4 * hostdata->sync_clock)/1000 - 4; @@ -1434,11 +1426,9 @@ NCR_700_start_command(struct scsi_cmnd *SCp) if(hostdata->fast && NCR_700_is_flag_clear(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC)) { - memcpy(&hostdata->msgout[count], NCR_700_SDTR_msg, - sizeof(NCR_700_SDTR_msg)); - hostdata->msgout[count+3] = spi_period(SCp->device->sdev_target); - hostdata->msgout[count+4] = spi_offset(SCp->device->sdev_target); - count += sizeof(NCR_700_SDTR_msg); + count += spi_populate_sync_msg(&hostdata->msgout[count], + spi_period(SCp->device->sdev_target), + spi_offset(SCp->device->sdev_target)); NCR_700_set_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); } |