/*
- 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.
-
+ * Copyright 2003-2005 Red Hat, Inc. All rights reserved.
+ * Copyright 2003-2005 Jeff Garzik
+ *
+ *
+ * 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 __LINUX_LIBATA_H__
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
+#include <linux/dma-mapping.h>
#include <asm/io.h>
#include <linux/ata.h>
#include <linux/workqueue.h>
/*
- * compile-time options
+ * compile-time options: to be removed as soon as all the drivers are
+ * converted to the new debugging mechanism
*/
#undef ATA_DEBUG /* debugging output */
#undef ATA_VERBOSE_DEBUG /* yet more debugging output */
#undef ATA_IRQ_TRAP /* define to ack screaming irqs */
#undef ATA_NDEBUG /* define to disable quick runtime checks */
-#undef ATA_ENABLE_ATAPI /* define to enable ATAPI support */
#undef ATA_ENABLE_PATA /* define to enable PATA support in some
* low-level drivers */
#undef ATAPI_ENABLE_DMADIR /* enables ATAPI DMADIR bridge support */
#define VPRINTK(fmt, args...)
#endif /* ATA_DEBUG */
-#ifdef ATA_NDEBUG
-#define assert(expr)
-#else
-#define assert(expr) \
- if(unlikely(!(expr))) { \
- printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \
- #expr,__FILE__,__FUNCTION__,__LINE__); \
- }
-#endif
+#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
+
+/* NEW: debug levels */
+#define HAVE_LIBATA_MSG 1
+
+enum {
+ ATA_MSG_DRV = 0x0001,
+ ATA_MSG_INFO = 0x0002,
+ ATA_MSG_PROBE = 0x0004,
+ ATA_MSG_WARN = 0x0008,
+ ATA_MSG_MALLOC = 0x0010,
+ ATA_MSG_CTL = 0x0020,
+ ATA_MSG_INTR = 0x0040,
+ ATA_MSG_ERR = 0x0080,
+};
+
+#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
+#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
+#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
+#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
+#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
+#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
+#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
+#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
+
+static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
+{
+ if (dval < 0 || dval >= (sizeof(u32) * 8))
+ return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
+ if (!dval)
+ return 0;
+ return (1 << dval) - 1;
+}
/* defines only for the constants which don't work well as enums */
#define ATA_TAG_POISON 0xfafbfcfdU
ATA_SHT_EMULATED = 1,
ATA_SHT_CMD_PER_LUN = 1,
ATA_SHT_THIS_ID = -1,
- ATA_SHT_USE_CLUSTERING = 0,
+ ATA_SHT_USE_CLUSTERING = 1,
/* struct ata_device stuff */
- ATA_DFLAG_LBA48 = (1 << 0), /* device supports LBA48 */
- ATA_DFLAG_PIO = (1 << 1), /* device currently in PIO mode */
- ATA_DFLAG_LOCK_SECTORS = (1 << 2), /* don't adjust max_sectors */
+ ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
+ ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
+
+ ATA_DFLAG_CFG_MASK = (1 << 8) - 1,
+
+ ATA_DFLAG_PIO = (1 << 8), /* device currently in PIO mode */
ATA_DEV_UNKNOWN = 0, /* unknown device */
ATA_DEV_ATA = 1, /* ATA device */
ATA_FLAG_PORT_DISABLED = (1 << 2), /* port is disabled, ignore it */
ATA_FLAG_SATA = (1 << 3),
ATA_FLAG_NO_LEGACY = (1 << 4), /* no legacy mode check */
- ATA_FLAG_SRST = (1 << 5), /* use ATA SRST, not E.D.D. */
+ ATA_FLAG_SRST = (1 << 5), /* (obsolete) use ATA SRST, not E.D.D. */
ATA_FLAG_MMIO = (1 << 6), /* use MMIO, not PIO */
- ATA_FLAG_SATA_RESET = (1 << 7), /* use COMRESET */
+ ATA_FLAG_SATA_RESET = (1 << 7), /* (obsolete) use COMRESET */
ATA_FLAG_PIO_DMA = (1 << 8), /* PIO cmds via DMA */
+ ATA_FLAG_NOINTR = (1 << 9), /* FIXME: Remove this once
+ * proper HSM is in place. */
+ ATA_FLAG_DEBUGMSG = (1 << 10),
+ ATA_FLAG_NO_ATAPI = (1 << 11), /* No ATAPI support */
+
+ ATA_FLAG_SUSPENDED = (1 << 12), /* port is suspended */
+
+ ATA_FLAG_PIO_LBA48 = (1 << 13), /* Host DMA engine is LBA28 only */
+ ATA_FLAG_IRQ_MASK = (1 << 14), /* Mask IRQ in PIO xfers */
+
+ ATA_FLAG_FLUSH_PORT_TASK = (1 << 15), /* Flush port task */
+ ATA_FLAG_IN_EH = (1 << 16), /* EH in progress */
ATA_QCFLAG_ACTIVE = (1 << 1), /* cmd not yet ack'd to scsi lyer */
ATA_QCFLAG_SG = (1 << 3), /* have s/g table? */
ATA_QCFLAG_SINGLE = (1 << 4), /* no s/g, just a single buffer */
ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE,
+ ATA_QCFLAG_EH_SCHEDULED = (1 << 5), /* EH scheduled */
+ /* host set flags */
+ ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host_set only */
+
/* various lengths of time */
- ATA_TMOUT_EDD = 5 * HZ, /* hueristic */
ATA_TMOUT_PIO = 30 * HZ,
- ATA_TMOUT_BOOT = 30 * HZ, /* hueristic */
- ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* hueristic */
+ ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */
+ ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */
ATA_TMOUT_CDB = 30 * HZ,
ATA_TMOUT_CDB_QUICK = 5 * HZ,
+ ATA_TMOUT_INTERNAL = 30 * HZ,
+ ATA_TMOUT_INTERNAL_QUICK = 5 * HZ,
/* ATA bus states */
BUS_UNKNOWN = 0,
PORT_DISABLED = 2,
/* encoding various smaller bitmaps into a single
- * unsigned long bitmap
+ * unsigned int bitmap
*/
- ATA_SHIFT_UDMA = 0,
- ATA_SHIFT_MWDMA = 8,
- ATA_SHIFT_PIO = 11,
+ ATA_BITS_PIO = 5,
+ ATA_BITS_MWDMA = 3,
+ ATA_BITS_UDMA = 8,
+
+ ATA_SHIFT_PIO = 0,
+ ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO,
+ ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA,
+
+ ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO,
+ ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA,
+ ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA,
+
+ /* size of buffer to pad xfers ending on unaligned boundaries */
+ ATA_DMA_PAD_SZ = 4,
+ ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE,
+
+ /* Masks for port functions */
+ ATA_PORT_PRIMARY = (1 << 0),
+ ATA_PORT_SECONDARY = (1 << 1),
};
-enum pio_task_states {
- PIO_ST_UNKNOWN,
- PIO_ST_IDLE,
- PIO_ST_POLL,
- PIO_ST_TMOUT,
- PIO_ST,
- PIO_ST_LAST,
- PIO_ST_LAST_POLL,
- PIO_ST_ERR,
+enum hsm_task_states {
+ HSM_ST_UNKNOWN,
+ HSM_ST_IDLE,
+ HSM_ST_POLL,
+ HSM_ST_TMOUT,
+ HSM_ST,
+ HSM_ST_LAST,
+ HSM_ST_LAST_POLL,
+ HSM_ST_ERR,
+};
+
+enum ata_completion_errors {
+ AC_ERR_DEV = (1 << 0), /* device reported error */
+ AC_ERR_HSM = (1 << 1), /* host state machine violation */
+ AC_ERR_TIMEOUT = (1 << 2), /* timeout */
+ AC_ERR_MEDIA = (1 << 3), /* media error */
+ AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
+ AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
+ AC_ERR_SYSTEM = (1 << 6), /* system error */
+ AC_ERR_INVALID = (1 << 7), /* invalid argument */
+ AC_ERR_OTHER = (1 << 8), /* unknown */
};
/* forward declarations */
struct ata_queued_cmd;
/* typedefs */
-typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc, u8 drv_stat);
+typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
+typedef void (*ata_probeinit_fn_t)(struct ata_port *);
+typedef int (*ata_reset_fn_t)(struct ata_port *, int, unsigned int *);
+typedef void (*ata_postreset_fn_t)(struct ata_port *ap, unsigned int *);
struct ata_ioports {
unsigned long cmd_addr;
struct ata_probe_ent {
struct list_head node;
struct device *dev;
- struct ata_port_operations *port_ops;
- Scsi_Host_Template *sht;
+ const struct ata_port_operations *port_ops;
+ struct scsi_host_template *sht;
struct ata_ioports port[ATA_MAX_PORTS];
unsigned int n_ports;
unsigned int hard_port_no;
unsigned long irq;
unsigned int irq_flags;
unsigned long host_flags;
+ unsigned long port_flags[ATA_MAX_PORTS]; /* pata fix */
+ unsigned long host_set_flags;
void __iomem *mmio_base;
void *private_data;
};
void __iomem *mmio_base;
unsigned int n_ports;
void *private_data;
- struct ata_port_operations *ops;
+ const struct ata_port_operations *ops;
+ unsigned long flags;
+ int simplex_claimed; /* Keep seperate in case we
+ ever need to do this locked */
struct ata_port * ports[0];
};
unsigned long flags; /* ATA_QCFLAG_xxx */
unsigned int tag;
unsigned int n_elem;
+ unsigned int orig_n_elem;
int dma_dir;
+ unsigned int pad_len;
+
unsigned int nsect;
unsigned int cursect;
unsigned int cursg_ofs;
struct scatterlist sgent;
+ struct scatterlist pad_sgent;
void *buf_virt;
- struct scatterlist *sg;
+ /* DO NOT iterate over __sg manually, use ata_for_each_sg() */
+ struct scatterlist *__sg;
- ata_qc_cb_t complete_fn;
+ unsigned int err_mask;
- struct completion *waiting;
+ ata_qc_cb_t complete_fn;
void *private_data;
};
unsigned long flags; /* ATA_DFLAG_xxx */
unsigned int class; /* ATA_DEV_xxx */
unsigned int devno; /* 0 or 1 */
- u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
+ u16 *id; /* IDENTIFY xxx DEVICE data */
u8 pio_mode;
u8 dma_mode;
u8 xfer_mode;
unsigned int xfer_shift; /* ATA_SHIFT_xxx */
- /* cache info about current transfer mode */
- u8 xfer_protocol; /* taskfile xfer protocol */
- u8 read_cmd; /* opcode to use on read */
- u8 write_cmd; /* opcode to use on write */
+ unsigned int multi_count; /* sectors count for
+ READ/WRITE MULTIPLE */
+ unsigned int max_sectors; /* per-device max sectors */
+ unsigned int cdb_len;
+
+ /* per-dev xfer mask */
+ unsigned int pio_mask;
+ unsigned int mwdma_mask;
+ unsigned int udma_mask;
+
+ /* for CHS addressing */
+ u16 cylinders; /* Number of cylinders */
+ u16 heads; /* Number of heads */
+ u16 sectors; /* Number of sectors per track */
};
struct ata_port {
struct Scsi_Host *host; /* our co-allocated scsi host */
- struct ata_port_operations *ops;
+ const struct ata_port_operations *ops;
unsigned long flags; /* ATA_FLAG_xxx */
unsigned int id; /* unique id req'd by scsi midlyr */
unsigned int port_no; /* unique port #; from zero */
struct ata_prd *prd; /* our SG list */
dma_addr_t prd_dma; /* and its DMA mapping */
+ void *pad; /* array of DMA pad buffers */
+ dma_addr_t pad_dma;
+
struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
u8 ctl; /* cache of ATA control register */
u8 last_ctl; /* Cache last written value */
- unsigned int bus_state;
- unsigned int port_state;
unsigned int pio_mask;
unsigned int mwdma_mask;
unsigned int udma_mask;
unsigned int cbl; /* cable type; ATA_CBL_xxx */
- unsigned int cdb_len;
struct ata_device device[ATA_MAX_DEVICES];
struct ata_host_stats stats;
struct ata_host_set *host_set;
+ struct device *dev;
- struct work_struct packet_task;
+ struct work_struct port_task;
- struct work_struct pio_task;
- unsigned int pio_task_state;
+ unsigned int hsm_task_state;
unsigned long pio_task_timeout;
+ u32 msg_enable;
+ struct list_head eh_done_q;
+
void *private_data;
};
void (*set_piomode) (struct ata_port *, struct ata_device *);
void (*set_dmamode) (struct ata_port *, struct ata_device *);
+ unsigned long (*mode_filter) (const struct ata_port *, struct ata_device *, unsigned long);
- void (*tf_load) (struct ata_port *ap, struct ata_taskfile *tf);
+ void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf);
void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
- void (*exec_command)(struct ata_port *ap, struct ata_taskfile *tf);
+ void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf);
u8 (*check_status)(struct ata_port *ap);
u8 (*check_altstatus)(struct ata_port *ap);
- u8 (*check_err)(struct ata_port *ap);
void (*dev_select)(struct ata_port *ap, unsigned int device);
- void (*phy_reset) (struct ata_port *ap);
+ void (*phy_reset) (struct ata_port *ap); /* obsolete */
+ void (*set_mode) (struct ata_port *ap);
+ int (*probe_reset) (struct ata_port *ap, unsigned int *classes);
+
void (*post_set_mode) (struct ata_port *ap);
int (*check_atapi_dma) (struct ata_queued_cmd *qc);
void (*bmdma_start) (struct ata_queued_cmd *qc);
void (*qc_prep) (struct ata_queued_cmd *qc);
- int (*qc_issue) (struct ata_queued_cmd *qc);
+ unsigned int (*qc_issue) (struct ata_queued_cmd *qc);
void (*eng_timeout) (struct ata_port *ap);
void (*host_stop) (struct ata_host_set *host_set);
- void (*bmdma_stop) (struct ata_port *ap);
+ void (*bmdma_stop) (struct ata_queued_cmd *qc);
u8 (*bmdma_status) (struct ata_port *ap);
};
struct ata_port_info {
- Scsi_Host_Template *sht;
+ struct scsi_host_template *sht;
unsigned long host_flags;
unsigned long pio_mask;
unsigned long mwdma_mask;
unsigned long udma_mask;
- struct ata_port_operations *port_ops;
+ const struct ata_port_operations *port_ops;
+ void *private_data;
};
+struct ata_timing {
+ unsigned short mode; /* ATA mode */
+ unsigned short setup; /* t1 */
+ unsigned short act8b; /* t2 for 8-bit I/O */
+ unsigned short rec8b; /* t2i for 8-bit I/O */
+ unsigned short cyc8b; /* t0 for 8-bit I/O */
+ unsigned short active; /* t2 or tD */
+ unsigned short recover; /* t2i or tK */
+ unsigned short cycle; /* t0 */
+ unsigned short udma; /* t2CYCTYP/2 */
+};
+
+#define FIT(v,vmin,vmax) max_t(short,min_t(short,v,vmax),vmin)
extern void ata_port_probe(struct ata_port *);
extern void __sata_phy_reset(struct ata_port *ap);
extern void sata_phy_reset(struct ata_port *ap);
extern void ata_bus_reset(struct ata_port *ap);
+extern int ata_drive_probe_reset(struct ata_port *ap,
+ ata_probeinit_fn_t probeinit,
+ ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
+ ata_postreset_fn_t postreset, unsigned int *classes);
+extern void ata_std_probeinit(struct ata_port *ap);
+extern int ata_std_softreset(struct ata_port *ap, int verbose,
+ unsigned int *classes);
+extern int sata_std_hardreset(struct ata_port *ap, int verbose,
+ unsigned int *class);
+extern void ata_std_postreset(struct ata_port *ap, unsigned int *classes);
+extern int ata_dev_revalidate(struct ata_port *ap, struct ata_device *dev,
+ int post_reset);
extern void ata_port_disable(struct ata_port *);
extern void ata_std_ports(struct ata_ioports *ioaddr);
#ifdef CONFIG_PCI
extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
unsigned int n_ports);
extern void ata_pci_remove_one (struct pci_dev *pdev);
+extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t state);
+extern int ata_pci_device_resume(struct pci_dev *pdev);
+extern int ata_pci_clear_simplex(struct pci_dev *pdev);
#endif /* CONFIG_PCI */
-extern int ata_device_add(struct ata_probe_ent *ent);
-extern int ata_scsi_detect(Scsi_Host_Template *sht);
+extern int ata_device_add(const struct ata_probe_ent *ent);
+extern void ata_host_set_remove(struct ata_host_set *host_set);
+extern int ata_scsi_detect(struct scsi_host_template *sht);
extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *));
-extern int ata_scsi_error(struct Scsi_Host *host);
+extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
+extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
extern int ata_scsi_release(struct Scsi_Host *host);
extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
+extern int ata_scsi_device_resume(struct scsi_device *);
+extern int ata_scsi_device_suspend(struct scsi_device *, pm_message_t state);
+extern int ata_device_resume(struct ata_port *, struct ata_device *);
+extern int ata_device_suspend(struct ata_port *, struct ata_device *, pm_message_t state);
+extern int ata_ratelimit(void);
+extern unsigned int ata_busy_sleep(struct ata_port *ap,
+ unsigned long timeout_pat,
+ unsigned long timeout);
+extern void ata_port_queue_task(struct ata_port *ap, void (*fn)(void *),
+ void *data, unsigned long delay);
+
/*
* Default driver ops implementations
*/
-extern void ata_tf_load(struct ata_port *ap, struct ata_taskfile *tf);
+extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
-extern void ata_tf_to_fis(struct ata_taskfile *tf, u8 *fis, u8 pmp);
-extern void ata_tf_from_fis(u8 *fis, struct ata_taskfile *tf);
+extern void ata_tf_to_fis(const struct ata_taskfile *tf, u8 *fis, u8 pmp);
+extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
extern void ata_noop_dev_select (struct ata_port *ap, unsigned int device);
extern void ata_std_dev_select (struct ata_port *ap, unsigned int device);
extern u8 ata_check_status(struct ata_port *ap);
extern u8 ata_altstatus(struct ata_port *ap);
-extern u8 ata_chk_err(struct ata_port *ap);
-extern void ata_exec_command(struct ata_port *ap, struct ata_taskfile *tf);
+extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf);
+extern int ata_std_probe_reset(struct ata_port *ap, unsigned int *classes);
extern int ata_port_start (struct ata_port *ap);
extern void ata_port_stop (struct ata_port *ap);
extern void ata_host_stop (struct ata_host_set *host_set);
extern irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
extern void ata_qc_prep(struct ata_queued_cmd *qc);
-extern int ata_qc_issue_prot(struct ata_queued_cmd *qc);
+extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
+extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc);
extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf,
unsigned int buflen);
extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
unsigned int n_elem);
-extern unsigned int ata_dev_classify(struct ata_taskfile *tf);
-extern void ata_dev_id_string(u16 *id, unsigned char *s,
- unsigned int ofs, unsigned int len);
+extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
+extern void ata_id_string(const u16 *id, unsigned char *s,
+ unsigned int ofs, unsigned int len);
+extern void ata_id_c_string(const u16 *id, unsigned char *s,
+ unsigned int ofs, unsigned int len);
extern void ata_bmdma_setup (struct ata_queued_cmd *qc);
extern void ata_bmdma_start (struct ata_queued_cmd *qc);
-extern void ata_bmdma_stop(struct ata_port *ap);
+extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
extern u8 ata_bmdma_status(struct ata_port *ap);
extern void ata_bmdma_irq_clear(struct ata_port *ap);
-extern void ata_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat);
+extern void __ata_qc_complete(struct ata_queued_cmd *qc);
extern void ata_eng_timeout(struct ata_port *ap);
-extern void ata_scsi_simulate(u16 *id, struct scsi_cmnd *cmd,
+extern void ata_scsi_simulate(struct ata_port *ap, struct ata_device *dev,
+ struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *));
extern int ata_std_bios_param(struct scsi_device *sdev,
struct block_device *bdev,
sector_t capacity, int geom[]);
extern int ata_scsi_slave_config(struct scsi_device *sdev);
+extern struct ata_device *ata_dev_pair(struct ata_port *ap,
+ struct ata_device *adev);
+
+/*
+ * Timing helpers
+ */
+
+extern unsigned int ata_pio_need_iordy(const struct ata_device *);
+extern int ata_timing_compute(struct ata_device *, unsigned short,
+ struct ata_timing *, int, int);
+extern void ata_timing_merge(const struct ata_timing *,
+ const struct ata_timing *, struct ata_timing *,
+ unsigned int);
+
+enum {
+ ATA_TIMING_SETUP = (1 << 0),
+ ATA_TIMING_ACT8B = (1 << 1),
+ ATA_TIMING_REC8B = (1 << 2),
+ ATA_TIMING_CYC8B = (1 << 3),
+ ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
+ ATA_TIMING_CYC8B,
+ ATA_TIMING_ACTIVE = (1 << 4),
+ ATA_TIMING_RECOVER = (1 << 5),
+ ATA_TIMING_CYCLE = (1 << 6),
+ ATA_TIMING_UDMA = (1 << 7),
+ ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
+ ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
+ ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
+ ATA_TIMING_CYCLE | ATA_TIMING_UDMA,
+};
#ifdef CONFIG_PCI
unsigned long val;
};
+extern void ata_pci_host_stop (struct ata_host_set *host_set);
extern struct ata_probe_ent *
-ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port);
-extern int pci_test_config_bits(struct pci_dev *pdev, struct pci_bits *bits);
-
+ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int portmask);
+extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
+extern unsigned long ata_pci_default_filter(const struct ata_port *, struct ata_device *, unsigned long);
#endif /* CONFIG_PCI */
+static inline int
+ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc)
+{
+ if (sg == &qc->pad_sgent)
+ return 1;
+ if (qc->pad_len)
+ return 0;
+ if (((sg - qc->__sg) + 1) == qc->n_elem)
+ return 1;
+ return 0;
+}
+
+static inline struct scatterlist *
+ata_qc_first_sg(struct ata_queued_cmd *qc)
+{
+ if (qc->n_elem)
+ return qc->__sg;
+ if (qc->pad_len)
+ return &qc->pad_sgent;
+ return NULL;
+}
+
+static inline struct scatterlist *
+ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc)
+{
+ if (sg == &qc->pad_sgent)
+ return NULL;
+ if (++sg - qc->__sg < qc->n_elem)
+ return sg;
+ if (qc->pad_len)
+ return &qc->pad_sgent;
+ return NULL;
+}
+
+#define ata_for_each_sg(sg, qc) \
+ for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc))
+
static inline unsigned int ata_tag_valid(unsigned int tag)
{
return (tag < ATA_MAX_QUEUE) ? 1 : 0;
}
-static inline unsigned int ata_dev_present(struct ata_device *dev)
+static inline unsigned int ata_class_present(unsigned int class)
{
- return ((dev->class == ATA_DEV_ATA) ||
- (dev->class == ATA_DEV_ATAPI));
+ return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI;
+}
+
+static inline unsigned int ata_dev_present(const struct ata_device *dev)
+{
+ return ata_class_present(dev->class);
}
static inline u8 ata_chk_status(struct ata_port *ap)
if (status & (ATA_BUSY | ATA_DRQ)) {
unsigned long l = ap->ioaddr.status_addr;
- printk(KERN_WARNING
- "ATA: abnormal status 0x%X on port 0x%lX\n",
- status, l);
+ if (ata_msg_warn(ap))
+ printk(KERN_WARNING "ATA: abnormal status 0x%X on port 0x%lX\n",
+ status, l);
}
return status;
tf->device = ATA_DEVICE_OBS | ATA_DEV1;
}
+static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
+{
+ qc->__sg = NULL;
+ qc->flags = 0;
+ qc->cursect = qc->cursg = qc->cursg_ofs = 0;
+ qc->nsect = 0;
+ qc->nbytes = qc->curbytes = 0;
+ qc->err_mask = 0;
+
+ ata_tf_init(qc->ap, &qc->tf, qc->dev->devno);
+}
+
+/**
+ * ata_qc_complete - Complete an active ATA command
+ * @qc: Command to complete
+ * @err_mask: ATA Status register contents
+ *
+ * Indicate to the mid and upper layers that an ATA
+ * command has completed, with either an ok or not-ok status.
+ *
+ * LOCKING:
+ * spin_lock_irqsave(host_set lock)
+ */
+static inline void ata_qc_complete(struct ata_queued_cmd *qc)
+{
+ if (unlikely(qc->flags & ATA_QCFLAG_EH_SCHEDULED))
+ return;
+
+ __ata_qc_complete(qc);
+}
/**
* ata_irq_on - Enable interrupts on a port.
status = ata_busy_wait(ap, bits, 1000);
if (status & bits)
- DPRINTK("abnormal status 0x%X\n", status);
+ if (ata_msg_err(ap))
+ printk(KERN_ERR "abnormal status 0x%X\n", status);
/* get controller status; clear intr, err bits */
if (ap->flags & ATA_FLAG_MMIO) {
post_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
}
- VPRINTK("irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n",
- host_stat, post_stat, status);
+ if (ata_msg_intr(ap))
+ printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n",
+ __FUNCTION__,
+ host_stat, post_stat, status);
return status;
}
ap->ops->scr_write(ap, reg, val);
}
-static inline void scr_write_flush(struct ata_port *ap, unsigned int reg,
+static inline void scr_write_flush(struct ata_port *ap, unsigned int reg,
u32 val)
{
ap->ops->scr_write(ap, reg, val);
return ((scr_read(ap, SCR_STATUS) & 0xf) == 0x3) ? 1 : 0;
}
-static inline int ata_try_flush_cache(struct ata_device *dev)
+static inline int ata_try_flush_cache(const struct ata_device *dev)
{
return ata_id_wcache_enabled(dev->id) ||
ata_id_has_flush(dev->id) ||
ata_id_has_flush_ext(dev->id);
}
+static inline unsigned int ac_err_mask(u8 status)
+{
+ if (status & ATA_BUSY)
+ return AC_ERR_HSM;
+ if (status & (ATA_ERR | ATA_DF))
+ return AC_ERR_DEV;
+ return 0;
+}
+
+static inline unsigned int __ac_err_mask(u8 status)
+{
+ unsigned int mask = ac_err_mask(status);
+ if (mask == 0)
+ return AC_ERR_OTHER;
+ return mask;
+}
+
+static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev)
+{
+ ap->pad_dma = 0;
+ ap->pad = dma_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ,
+ &ap->pad_dma, GFP_KERNEL);
+ return (ap->pad == NULL) ? -ENOMEM : 0;
+}
+
+static inline void ata_pad_free(struct ata_port *ap, struct device *dev)
+{
+ dma_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma);
+}
+
#endif /* __LINUX_LIBATA_H__ */
git://git.onelab.eu / linux-2.6.git / blobdiff