mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 08:50:53 +07:00
af36d7f0df
- changes license of all code from OSL+GPL to plain ole GPL - except for NVIDIA, who hasn't yet responded about sata_nv - copyright holders were already contacted privately - adds info in each driver about where hardware/protocol docs may be obtained - where I have made major contributions, updated copyright dates
158 lines
3.7 KiB
C
158 lines
3.7 KiB
C
/*
|
|
* sata_promise.h - Promise SATA common definitions and inline funcs
|
|
*
|
|
* Copyright 2003-2004 Red Hat, Inc.
|
|
*
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*
|
|
* libata documentation is available via 'make {ps|pdf}docs',
|
|
* as Documentation/DocBook/libata.*
|
|
*
|
|
*/
|
|
|
|
#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__ */
|