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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/scsi/sata_promise.h
downloadblackbird-op-linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
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Linux-2.6.12-rc2v2.6.12-rc2
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!
Diffstat (limited to 'drivers/scsi/sata_promise.h')
-rw-r--r--drivers/scsi/sata_promise.h154
1 files changed, 154 insertions, 0 deletions
diff --git a/drivers/scsi/sata_promise.h b/drivers/scsi/sata_promise.h
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index 000000000000..6e7e96b9ee13
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+++ b/drivers/scsi/sata_promise.h
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+/*
+ * 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__ */
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