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sata_promise: make pdc_atapi_pkt() use values from qc->tf 

Make pdc_atapi_pkt() use values from qc->tf instead of creating its
own.  This is to ease future ATAPI handling changes.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-12-04 13:33:30 +09:00 committed by Jeff Garzik
parent c88f90c377
commit 46a671430d
1 changed files with 13 additions and 21 deletions
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34
drivers/ata/sata_promise.c
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@ -450,7 +450,7 @@ static void pdc_atapi_pkt(struct ata_queued_cmd *qc)
struct pdc_port_priv *pp = ap->private_data;
u8 *buf = pp->pkt;
u32 *buf32 = (u32 *) buf;
unsigned int dev_sel, feature, nbytes;
unsigned int dev_sel, feature;
/* set control bits (byte 0), zero delay seq id (byte 3),
* and seq id (byte 2)
@ -473,45 +473,37 @@ static void pdc_atapi_pkt(struct ata_queued_cmd *qc)
buf32[2] = 0; /* no next-packet */
/* select drive */
if (sata_scr_valid(&ap->link)) {
if (sata_scr_valid(&ap->link))
dev_sel = PDC_DEVICE_SATA;
} else {
dev_sel = ATA_DEVICE_OBS;
if (qc->dev->devno != 0)
dev_sel |= ATA_DEV1;
}
else
dev_sel = qc->tf.device;
buf[12] = (1 << 5) | ATA_REG_DEVICE;
buf[13] = dev_sel;
buf[14] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_CLEAR_BSY;
buf[15] = dev_sel; /* once more, waiting for BSY to clear */
buf[16] = (1 << 5) | ATA_REG_NSECT;
buf[17] = 0x00;
buf[17] = qc->tf.nsect;
buf[18] = (1 << 5) | ATA_REG_LBAL;
buf[19] = 0x00;
buf[19] = qc->tf.lbal;
/* set feature and byte counter registers */
if (qc->tf.protocol != ATA_PROT_ATAPI_DMA) {
if (qc->tf.protocol != ATA_PROT_ATAPI_DMA)
feature = PDC_FEATURE_ATAPI_PIO;
/* set byte counter register to real transfer byte count */
nbytes = qc->nbytes;
if (nbytes > 0xffff)
nbytes = 0xffff;
} else {
else
feature = PDC_FEATURE_ATAPI_DMA;
/* set byte counter register to 0 */
nbytes = 0;
}
buf[20] = (1 << 5) | ATA_REG_FEATURE;
buf[21] = feature;
buf[22] = (1 << 5) | ATA_REG_BYTEL;
buf[23] = nbytes & 0xFF;
buf[23] = qc->tf.lbam;
buf[24] = (1 << 5) | ATA_REG_BYTEH;
buf[25] = (nbytes >> 8) & 0xFF;
buf[25] = qc->tf.lbah;
/* send ATAPI packet command 0xA0 */
buf[26] = (1 << 5) | ATA_REG_CMD;
buf[27] = ATA_CMD_PACKET;
buf[27] = qc->tf.command;
/* select drive and check DRQ */
buf[28] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_WAIT_DRDY;