mirror of
https://github.com/torvalds/linux.git
synced 2024-11-08 21:21:47 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
155 lines
3.8 KiB
C
155 lines
3.8 KiB
C
/*
|
|
* sata_promise.h - Promise SATA common definitions and inline funcs
|
|
*
|
|
* Copyright 2003-2004 Red Hat, Inc.
|
|
*
|
|
* The contents of this file are subject to the Open
|
|
* Software License version 1.1 that can be found at
|
|
* http://www.opensource.org/licenses/osl-1.1.txt and is included herein
|
|
* by reference.
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms
|
|
* of the GNU General Public License version 2 (the "GPL") as distributed
|
|
* in the kernel source COPYING file, in which case the provisions of
|
|
* the GPL are applicable instead of the above. If you wish to allow
|
|
* the use of your version of this file only under the terms of the
|
|
* GPL and not to allow others to use your version of this file under
|
|
* the OSL, indicate your decision by deleting the provisions above and
|
|
* replace them with the notice and other provisions required by the GPL.
|
|
* If you do not delete the provisions above, a recipient may use your
|
|
* version of this file under either the OSL or the GPL.
|
|
*
|
|
*/
|
|
|
|
#ifndef __SATA_PROMISE_H__
|
|
#define __SATA_PROMISE_H__
|
|
|
|
#include <linux/ata.h>
|
|
|
|
enum pdc_packet_bits {
|
|
PDC_PKT_READ = (1 << 2),
|
|
PDC_PKT_NODATA = (1 << 3),
|
|
|
|
PDC_PKT_SIZEMASK = (1 << 7) | (1 << 6) | (1 << 5),
|
|
PDC_PKT_CLEAR_BSY = (1 << 4),
|
|
PDC_PKT_WAIT_DRDY = (1 << 3) | (1 << 4),
|
|
PDC_LAST_REG = (1 << 3),
|
|
|
|
PDC_REG_DEVCTL = (1 << 3) | (1 << 2) | (1 << 1),
|
|
};
|
|
|
|
static inline unsigned int pdc_pkt_header(struct ata_taskfile *tf,
|
|
dma_addr_t sg_table,
|
|
unsigned int devno, u8 *buf)
|
|
{
|
|
u8 dev_reg;
|
|
u32 *buf32 = (u32 *) buf;
|
|
|
|
/* set control bits (byte 0), zero delay seq id (byte 3),
|
|
* and seq id (byte 2)
|
|
*/
|
|
switch (tf->protocol) {
|
|
case ATA_PROT_DMA:
|
|
if (!(tf->flags & ATA_TFLAG_WRITE))
|
|
buf32[0] = cpu_to_le32(PDC_PKT_READ);
|
|
else
|
|
buf32[0] = 0;
|
|
break;
|
|
|
|
case ATA_PROT_NODATA:
|
|
buf32[0] = cpu_to_le32(PDC_PKT_NODATA);
|
|
break;
|
|
|
|
default:
|
|
BUG();
|
|
break;
|
|
}
|
|
|
|
buf32[1] = cpu_to_le32(sg_table); /* S/G table addr */
|
|
buf32[2] = 0; /* no next-packet */
|
|
|
|
if (devno == 0)
|
|
dev_reg = ATA_DEVICE_OBS;
|
|
else
|
|
dev_reg = ATA_DEVICE_OBS | ATA_DEV1;
|
|
|
|
/* select device */
|
|
buf[12] = (1 << 5) | PDC_PKT_CLEAR_BSY | ATA_REG_DEVICE;
|
|
buf[13] = dev_reg;
|
|
|
|
/* device control register */
|
|
buf[14] = (1 << 5) | PDC_REG_DEVCTL;
|
|
buf[15] = tf->ctl;
|
|
|
|
return 16; /* offset of next byte */
|
|
}
|
|
|
|
static inline unsigned int pdc_pkt_footer(struct ata_taskfile *tf, u8 *buf,
|
|
unsigned int i)
|
|
{
|
|
if (tf->flags & ATA_TFLAG_DEVICE) {
|
|
buf[i++] = (1 << 5) | ATA_REG_DEVICE;
|
|
buf[i++] = tf->device;
|
|
}
|
|
|
|
/* and finally the command itself; also includes end-of-pkt marker */
|
|
buf[i++] = (1 << 5) | PDC_LAST_REG | ATA_REG_CMD;
|
|
buf[i++] = tf->command;
|
|
|
|
return i;
|
|
}
|
|
|
|
static inline unsigned int pdc_prep_lba28(struct ata_taskfile *tf, u8 *buf, unsigned int i)
|
|
{
|
|
/* the "(1 << 5)" should be read "(count << 5)" */
|
|
|
|
/* ATA command block registers */
|
|
buf[i++] = (1 << 5) | ATA_REG_FEATURE;
|
|
buf[i++] = tf->feature;
|
|
|
|
buf[i++] = (1 << 5) | ATA_REG_NSECT;
|
|
buf[i++] = tf->nsect;
|
|
|
|
buf[i++] = (1 << 5) | ATA_REG_LBAL;
|
|
buf[i++] = tf->lbal;
|
|
|
|
buf[i++] = (1 << 5) | ATA_REG_LBAM;
|
|
buf[i++] = tf->lbam;
|
|
|
|
buf[i++] = (1 << 5) | ATA_REG_LBAH;
|
|
buf[i++] = tf->lbah;
|
|
|
|
return i;
|
|
}
|
|
|
|
static inline unsigned int pdc_prep_lba48(struct ata_taskfile *tf, u8 *buf, unsigned int i)
|
|
{
|
|
/* the "(2 << 5)" should be read "(count << 5)" */
|
|
|
|
/* ATA command block registers */
|
|
buf[i++] = (2 << 5) | ATA_REG_FEATURE;
|
|
buf[i++] = tf->hob_feature;
|
|
buf[i++] = tf->feature;
|
|
|
|
buf[i++] = (2 << 5) | ATA_REG_NSECT;
|
|
buf[i++] = tf->hob_nsect;
|
|
buf[i++] = tf->nsect;
|
|
|
|
buf[i++] = (2 << 5) | ATA_REG_LBAL;
|
|
buf[i++] = tf->hob_lbal;
|
|
buf[i++] = tf->lbal;
|
|
|
|
buf[i++] = (2 << 5) | ATA_REG_LBAM;
|
|
buf[i++] = tf->hob_lbam;
|
|
buf[i++] = tf->lbam;
|
|
|
|
buf[i++] = (2 << 5) | ATA_REG_LBAH;
|
|
buf[i++] = tf->hob_lbah;
|
|
buf[i++] = tf->lbah;
|
|
|
|
return i;
|
|
}
|
|
|
|
|
|
#endif /* __SATA_PROMISE_H__ */
|