patch-2.4.27 linux-2.4.27/include/linux/ata.h
Next file: linux-2.4.27/include/linux/atmdev.h
Previous file: linux-2.4.27/include/linux/affs_fs_sb.h
Back to the patch index
Back to the overall index
- Lines: 228
- Date:
2004-08-07 16:26:06.242412029 -0700
- Orig file:
linux-2.4.26/include/linux/ata.h
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.26/include/linux/ata.h linux-2.4.27/include/linux/ata.h
@@ -0,0 +1,227 @@
+
+/*
+ Copyright 2003-2004 Red Hat, Inc. All rights reserved.
+ Copyright 2003-2004 Jeff Garzik
+
+ 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 __LINUX_ATA_H__
+#define __LINUX_ATA_H__
+
+/* defines only for the constants which don't work well as enums */
+#define ATA_DMA_BOUNDARY 0xffffUL
+#define ATA_DMA_MASK 0xffffffffULL
+
+enum {
+ /* various global constants */
+ ATA_MAX_DEVICES = 2, /* per bus/port */
+ ATA_MAX_PRD = 256, /* we could make these 256/256 */
+ ATA_SECT_SIZE = 512,
+ ATA_SECT_SIZE_MASK = (ATA_SECT_SIZE - 1),
+ ATA_SECT_DWORDS = ATA_SECT_SIZE / sizeof(u32),
+
+ ATA_ID_WORDS = 256,
+ ATA_ID_PROD_OFS = 27,
+ ATA_ID_FW_REV_OFS = 23,
+ ATA_ID_SERNO_OFS = 10,
+ ATA_ID_MAJOR_VER = 80,
+ ATA_ID_PIO_MODES = 64,
+ ATA_ID_UDMA_MODES = 88,
+ ATA_ID_PIO4 = (1 << 1),
+
+ ATA_PCI_CTL_OFS = 2,
+ ATA_SERNO_LEN = 20,
+ ATA_UDMA0 = (1 << 0),
+ ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
+ ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
+ ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
+ ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
+ ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
+ ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
+ ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
+ /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
+
+ ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
+
+ /* DMA-related */
+ ATA_PRD_SZ = 8,
+ ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
+ ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
+
+ ATA_DMA_TABLE_OFS = 4,
+ ATA_DMA_STATUS = 2,
+ ATA_DMA_CMD = 0,
+ ATA_DMA_WR = (1 << 3),
+ ATA_DMA_START = (1 << 0),
+ ATA_DMA_INTR = (1 << 2),
+ ATA_DMA_ERR = (1 << 1),
+ ATA_DMA_ACTIVE = (1 << 0),
+
+ /* bits in ATA command block registers */
+ ATA_HOB = (1 << 7), /* LBA48 selector */
+ ATA_NIEN = (1 << 1), /* disable-irq flag */
+ ATA_LBA = (1 << 6), /* LBA28 selector */
+ ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
+ ATA_BUSY = (1 << 7), /* BSY status bit */
+ ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
+ ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
+ ATA_DRQ = (1 << 3), /* data request i/o */
+ ATA_ERR = (1 << 0), /* have an error */
+ ATA_SRST = (1 << 2), /* software reset */
+ ATA_ABORTED = (1 << 2), /* command aborted */
+
+ /* ATA command block registers */
+ ATA_REG_DATA = 0x00,
+ ATA_REG_ERR = 0x01,
+ ATA_REG_NSECT = 0x02,
+ ATA_REG_LBAL = 0x03,
+ ATA_REG_LBAM = 0x04,
+ ATA_REG_LBAH = 0x05,
+ ATA_REG_DEVICE = 0x06,
+ ATA_REG_STATUS = 0x07,
+
+ ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
+ ATA_REG_CMD = ATA_REG_STATUS,
+ ATA_REG_BYTEL = ATA_REG_LBAM,
+ ATA_REG_BYTEH = ATA_REG_LBAH,
+ ATA_REG_DEVSEL = ATA_REG_DEVICE,
+ ATA_REG_IRQ = ATA_REG_NSECT,
+
+ /* ATA device commands */
+ ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
+ ATA_CMD_EDD = 0x90, /* execute device diagnostic */
+ ATA_CMD_FLUSH = 0xE7,
+ ATA_CMD_FLUSH_EXT = 0xEA,
+ ATA_CMD_ID_ATA = 0xEC,
+ ATA_CMD_ID_ATAPI = 0xA1,
+ ATA_CMD_READ = 0xC8,
+ ATA_CMD_READ_EXT = 0x25,
+ ATA_CMD_WRITE = 0xCA,
+ ATA_CMD_WRITE_EXT = 0x35,
+ ATA_CMD_PIO_READ = 0x20,
+ ATA_CMD_PIO_READ_EXT = 0x24,
+ ATA_CMD_PIO_WRITE = 0x30,
+ ATA_CMD_PIO_WRITE_EXT = 0x34,
+ ATA_CMD_SET_FEATURES = 0xEF,
+ ATA_CMD_PACKET = 0xA0,
+
+ /* SETFEATURES stuff */
+ SETFEATURES_XFER = 0x03,
+ XFER_UDMA_7 = 0x47,
+ XFER_UDMA_6 = 0x46,
+ XFER_UDMA_5 = 0x45,
+ XFER_UDMA_4 = 0x44,
+ XFER_UDMA_3 = 0x43,
+ XFER_UDMA_2 = 0x42,
+ XFER_UDMA_1 = 0x41,
+ XFER_UDMA_0 = 0x40,
+ XFER_PIO_4 = 0x0C,
+ XFER_PIO_3 = 0x0B,
+
+ /* ATAPI stuff */
+ ATAPI_PKT_DMA = (1 << 0),
+ ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
+ 0=to device, 1=to host */
+
+ /* cable types */
+ ATA_CBL_NONE = 0,
+ ATA_CBL_PATA40 = 1,
+ ATA_CBL_PATA80 = 2,
+ ATA_CBL_PATA_UNK = 3,
+ ATA_CBL_SATA = 4,
+
+ /* SATA Status and Control Registers */
+ SCR_STATUS = 0,
+ SCR_ERROR = 1,
+ SCR_CONTROL = 2,
+ SCR_ACTIVE = 3,
+ SCR_NOTIFICATION = 4,
+
+ /* struct ata_taskfile flags */
+ ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
+ ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
+ ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
+ ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
+};
+
+enum ata_tf_protocols {
+ /* ATA taskfile protocols */
+ ATA_PROT_UNKNOWN, /* unknown/invalid */
+ ATA_PROT_NODATA, /* no data */
+ ATA_PROT_PIO, /* PIO single sector */
+ ATA_PROT_PIO_MULT, /* PIO multiple sector */
+ ATA_PROT_DMA, /* DMA */
+ ATA_PROT_ATAPI, /* packet command */
+ ATA_PROT_ATAPI_DMA, /* packet command with special DMA sauce */
+};
+
+/* core structures */
+
+struct ata_prd {
+ u32 addr;
+ u32 flags_len;
+} __attribute__((packed));
+
+struct ata_taskfile {
+ unsigned long flags; /* ATA_TFLAG_xxx */
+ u8 protocol; /* ATA_PROT_xxx */
+
+ u8 ctl; /* control reg */
+
+ u8 hob_feature; /* additional data */
+ u8 hob_nsect; /* to support LBA48 */
+ u8 hob_lbal;
+ u8 hob_lbam;
+ u8 hob_lbah;
+
+ u8 feature;
+ u8 nsect;
+ u8 lbal;
+ u8 lbam;
+ u8 lbah;
+
+ u8 device;
+
+ u8 command; /* IO operation */
+};
+
+#define ata_id_is_ata(dev) (((dev)->id[0] & (1 << 15)) == 0)
+#define ata_id_rahead_enabled(dev) ((dev)->id[85] & (1 << 6))
+#define ata_id_wcache_enabled(dev) ((dev)->id[85] & (1 << 5))
+#define ata_id_has_lba48(dev) ((dev)->id[83] & (1 << 10))
+#define ata_id_has_wcache(dev) ((dev)->id[82] & (1 << 5))
+#define ata_id_has_pm(dev) ((dev)->id[82] & (1 << 3))
+#define ata_id_has_lba(dev) ((dev)->id[49] & (1 << 8))
+#define ata_id_has_dma(dev) ((dev)->id[49] & (1 << 9))
+#define ata_id_removeable(dev) ((dev)->id[0] & (1 << 7))
+#define ata_id_u32(dev,n) \
+ (((u32) (dev)->id[(n) + 1] << 16) | ((u32) (dev)->id[(n)]))
+#define ata_id_u64(dev,n) \
+ ( ((u64) dev->id[(n) + 3] << 48) | \
+ ((u64) dev->id[(n) + 2] << 32) | \
+ ((u64) dev->id[(n) + 1] << 16) | \
+ ((u64) dev->id[(n) + 0]) )
+
+static inline int is_atapi_taskfile(struct ata_taskfile *tf)
+{
+ return (tf->protocol == ATA_PROT_ATAPI) ||
+ (tf->protocol == ATA_PROT_ATAPI_DMA);
+}
+
+#endif /* __LINUX_ATA_H__ */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)