#include <linux/delay.h>
#include <linux/interrupt.h>
+#include <linux/pci.h>
#include <asm/io.h>
#include <linux/ata.h>
+#include <linux/workqueue.h>
/*
* compile-time options
*/
-#undef ATA_FORCE_PIO /* do not configure or use DMA */
#undef ATA_DEBUG /* debugging output */
#undef ATA_VERBOSE_DEBUG /* yet more debugging output */
#undef ATA_IRQ_TRAP /* define to ack screaming irqs */
#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 */
/* note: prints function name for you */
/* defines only for the constants which don't work well as enums */
#define ATA_TAG_POISON 0xfafbfcfdU
+/* move to PCI layer? */
+static inline struct device *pci_dev_to_dev(struct pci_dev *pdev)
+{
+ return &pdev->dev;
+}
+
enum {
/* various global constants */
LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
/* struct ata_device stuff */
ATA_DFLAG_LBA48 = (1 << 0), /* device supports LBA48 */
ATA_DFLAG_PIO = (1 << 1), /* device currently in PIO mode */
- ATA_DFLAG_MASTER = (1 << 2), /* is device 0? */
- ATA_DFLAG_WCACHE = (1 << 3), /* has write cache we can
- * (hopefully) flush? */
+ ATA_DFLAG_LOCK_SECTORS = (1 << 2), /* don't adjust max_sectors */
ATA_DEV_UNKNOWN = 0, /* unknown device */
ATA_DEV_ATA = 1, /* ATA device */
ATA_FLAG_SRST = (1 << 5), /* 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_PIO_DMA = (1 << 8), /* PIO cmds via DMA */
ATA_QCFLAG_ACTIVE = (1 << 1), /* cmd not yet ack'd to scsi lyer */
- ATA_QCFLAG_DMA = (1 << 2), /* data delivered via DMA */
- ATA_QCFLAG_ATAPI = (1 << 3), /* is ATAPI packet command? */
- ATA_QCFLAG_SG = (1 << 4), /* have s/g table? */
- ATA_QCFLAG_POLL = (1 << 5), /* polling, no interrupts */
-
- /* struct ata_engine atomic flags (use test_bit, etc.) */
- ATA_EFLG_ACTIVE = 0, /* engine is active */
+ 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,
/* various lengths of time */
ATA_TMOUT_EDD = 5 * HZ, /* hueristic */
BUS_IDENTIFY = 8,
BUS_PACKET = 9,
- /* thread states */
- THR_UNKNOWN = 0,
- THR_PORT_RESET = (THR_UNKNOWN + 1),
- THR_AWAIT_DEATH = (THR_PORT_RESET + 1),
- THR_PROBE_FAILED = (THR_AWAIT_DEATH + 1),
- THR_IDLE = (THR_PROBE_FAILED + 1),
- THR_PROBE_SUCCESS = (THR_IDLE + 1),
- THR_PROBE_START = (THR_PROBE_SUCCESS + 1),
- THR_PIO_POLL = (THR_PROBE_START + 1),
- THR_PIO_TMOUT = (THR_PIO_POLL + 1),
- THR_PIO = (THR_PIO_TMOUT + 1),
- THR_PIO_LAST = (THR_PIO + 1),
- THR_PIO_LAST_POLL = (THR_PIO_LAST + 1),
- THR_PIO_ERR = (THR_PIO_LAST_POLL + 1),
- THR_PACKET = (THR_PIO_ERR + 1),
-
/* SATA port states */
PORT_UNKNOWN = 0,
PORT_ENABLED = 1,
PORT_DISABLED = 2,
- /* ata_qc_cb_t flags - note uses above ATA_QCFLAG_xxx namespace,
- * but not numberspace
+ /* encoding various smaller bitmaps into a single
+ * unsigned long bitmap
*/
- ATA_QCFLAG_TIMEOUT = (1 << 0),
+ ATA_SHIFT_UDMA = 0,
+ ATA_SHIFT_MWDMA = 8,
+ ATA_SHIFT_PIO = 11,
+};
+
+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,
};
/* forward declarations */
struct ata_queued_cmd;
/* typedefs */
-typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc, unsigned int flags);
+typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc, u8 drv_stat);
struct ata_ioports {
unsigned long cmd_addr;
struct ata_probe_ent {
struct list_head node;
- struct pci_dev *pdev;
+ struct device *dev;
struct ata_port_operations *port_ops;
Scsi_Host_Template *sht;
struct ata_ioports port[ATA_MAX_PORTS];
unsigned int n_ports;
+ unsigned int hard_port_no;
unsigned int pio_mask;
+ unsigned int mwdma_mask;
unsigned int udma_mask;
unsigned int legacy_mode;
unsigned long irq;
unsigned int irq_flags;
unsigned long host_flags;
- void *mmio_base;
+ void __iomem *mmio_base;
void *private_data;
};
struct ata_host_set {
spinlock_t lock;
- struct pci_dev *pdev;
+ struct device *dev;
unsigned long irq;
- void *mmio_base;
+ void __iomem *mmio_base;
unsigned int n_ports;
void *private_data;
+ struct ata_port_operations *ops;
struct ata_port * ports[0];
};
struct scsi_cmnd *scsicmd;
void (*scsidone)(struct scsi_cmnd *);
- struct list_head node;
+ struct ata_taskfile tf;
+ u8 cdb[ATAPI_CDB_LEN];
+
unsigned long flags; /* ATA_QCFLAG_xxx */
unsigned int tag;
unsigned int n_elem;
+
+ int dma_dir;
+
unsigned int nsect;
unsigned int cursect;
+
+ unsigned int nbytes;
+ unsigned int curbytes;
+
unsigned int cursg;
unsigned int cursg_ofs;
- struct ata_taskfile tf;
+
struct scatterlist sgent;
+ void *buf_virt;
struct scatterlist *sg;
- ata_qc_cb_t callback;
+ ata_qc_cb_t complete_fn;
- struct semaphore sem;
+ struct completion *waiting;
void *private_data;
};
unsigned int class; /* ATA_DEV_xxx */
unsigned int devno; /* 0 or 1 */
u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
- unsigned int pio_mode;
- unsigned int udma_mode;
-
- unsigned char vendor[8]; /* space-padded, not ASCIIZ */
- unsigned char product[32]; /* WARNING: shorter than
- * ATAPI7 spec size, 40 ASCII
- * characters
- */
+ 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 write_cmd; /* opcode to use on write */
};
-struct ata_engine {
- unsigned long flags;
- struct list_head q;
-};
-
struct ata_port {
struct Scsi_Host *host; /* our co-allocated scsi host */
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 */
+ unsigned int hard_port_no; /* hardware port #; from zero */
struct ata_prd *prd; /* our SG list */
dma_addr_t prd_dma; /* and its DMA mapping */
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 */
-
- struct ata_engine eng;
+ unsigned int cdb_len;
struct ata_device device[ATA_MAX_DEVICES];
struct ata_host_stats stats;
struct ata_host_set *host_set;
- struct semaphore sem;
- struct semaphore probe_sem;
+ struct work_struct packet_task;
- unsigned int thr_state;
- int time_to_die;
- pid_t thr_pid;
- struct completion thr_exited;
- struct semaphore thr_sem;
- struct timer_list thr_timer;
- unsigned long thr_timeout;
+ struct work_struct pio_task;
+ unsigned int pio_task_state;
+ unsigned long pio_task_timeout;
void *private_data;
};
void (*dev_config) (struct ata_port *, struct ata_device *);
- void (*set_piomode) (struct ata_port *, struct ata_device *,
- unsigned int);
- void (*set_udmamode) (struct ata_port *, struct ata_device *,
- unsigned int);
+ void (*set_piomode) (struct ata_port *, struct ata_device *);
+ void (*set_dmamode) (struct ata_port *, struct ata_device *);
void (*tf_load) (struct ata_port *ap, 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);
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 (*post_set_mode) (struct ata_port *ap);
+ int (*check_atapi_dma) (struct ata_queued_cmd *qc);
+
+ void (*bmdma_setup) (struct ata_queued_cmd *qc);
void (*bmdma_start) (struct ata_queued_cmd *qc);
- void (*fill_sg) (struct ata_queued_cmd *qc);
+
+ void (*qc_prep) (struct ata_queued_cmd *qc);
+ int (*qc_issue) (struct ata_queued_cmd *qc);
+
void (*eng_timeout) (struct ata_port *ap);
irqreturn_t (*irq_handler)(int, void *, struct pt_regs *);
+ void (*irq_clear) (struct ata_port *);
u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg);
void (*scr_write) (struct ata_port *ap, unsigned int sc_reg,
void (*port_stop) (struct ata_port *ap);
void (*host_stop) (struct ata_host_set *host_set);
+
+ void (*bmdma_stop) (struct ata_port *ap);
+ u8 (*bmdma_status) (struct ata_port *ap);
};
struct ata_port_info {
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;
};
-struct pci_bits {
- unsigned int reg; /* PCI config register to read */
- unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
- unsigned long mask;
- unsigned long val;
-};
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 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);
+#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_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 int ata_scsi_release(struct Scsi_Host *host);
/*
* Default driver ops implementations
*/
-extern void ata_tf_load_pio(struct ata_port *ap, struct ata_taskfile *tf);
-extern void ata_tf_load_mmio(struct ata_port *ap, struct ata_taskfile *tf);
-extern void ata_tf_read_pio(struct ata_port *ap, struct ata_taskfile *tf);
-extern void ata_tf_read_mmio(struct ata_port *ap, struct ata_taskfile *tf);
-extern u8 ata_check_status_pio(struct ata_port *ap);
-extern u8 ata_check_status_mmio(struct ata_port *ap);
-extern void ata_exec_command_pio(struct ata_port *ap, struct ata_taskfile *tf);
-extern void ata_exec_command_mmio(struct ata_port *ap, struct ata_taskfile *tf);
+extern void ata_tf_load(struct ata_port *ap, 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_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 int ata_port_start (struct ata_port *ap);
extern void ata_port_stop (struct ata_port *ap);
extern irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
-extern void ata_fill_sg(struct ata_queued_cmd *qc);
-extern void ata_bmdma_start_mmio (struct ata_queued_cmd *qc);
-extern void ata_bmdma_start_pio (struct ata_queued_cmd *qc);
-extern int pci_test_config_bits(struct pci_dev *pdev, struct pci_bits *bits);
-extern void ata_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat, unsigned int done_late);
+extern void ata_qc_prep(struct ata_queued_cmd *qc);
+extern 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 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 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_eng_timeout(struct ata_port *ap);
+extern void ata_scsi_simulate(u16 *id, 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);
-static inline unsigned long msecs_to_jiffies(unsigned long msecs)
-{
- return ((HZ * msecs + 999) / 1000);
-}
+#ifdef CONFIG_PCI
+struct pci_bits {
+ unsigned int reg; /* PCI config register to read */
+ unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
+ unsigned long mask;
+ unsigned long val;
+};
+
+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);
+
+#endif /* CONFIG_PCI */
+
static inline unsigned int ata_tag_valid(unsigned int tag)
{
(dev->class == ATA_DEV_ATAPI));
}
-static inline u8 ata_chk_err(struct ata_port *ap)
-{
- if (ap->flags & ATA_FLAG_MMIO) {
- return readb((void *) ap->ioaddr.error_addr);
- }
- return inb(ap->ioaddr.error_addr);
-}
-
static inline u8 ata_chk_status(struct ata_port *ap)
{
return ap->ops->check_status(ap);
}
-static inline u8 ata_altstatus(struct ata_port *ap)
-{
- if (ap->flags & ATA_FLAG_MMIO)
- return readb(ap->ioaddr.altstatus_addr);
- return inb(ap->ioaddr.altstatus_addr);
-}
-
static inline void ata_pause(struct ata_port *ap)
{
ata_altstatus(ap);
return status;
}
+static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
+{
+ qc->tf.ctl |= ATA_NIEN;
+}
+
static inline struct ata_queued_cmd *ata_qc_from_tag (struct ata_port *ap,
unsigned int tag)
{
static inline u8 ata_irq_on(struct ata_port *ap)
{
struct ata_ioports *ioaddr = &ap->ioaddr;
+ u8 tmp;
ap->ctl &= ~ATA_NIEN;
ap->last_ctl = ap->ctl;
if (ap->flags & ATA_FLAG_MMIO)
- writeb(ap->ctl, ioaddr->ctl_addr);
+ writeb(ap->ctl, (void __iomem *) ioaddr->ctl_addr);
else
outb(ap->ctl, ioaddr->ctl_addr);
- return ata_wait_idle(ap);
+ tmp = ata_wait_idle(ap);
+
+ ap->ops->irq_clear(ap);
+
+ return tmp;
}
static inline u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq)
/* get controller status; clear intr, err bits */
if (ap->flags & ATA_FLAG_MMIO) {
- void *mmio = (void *) ap->ioaddr.bmdma_addr;
+ void __iomem *mmio = (void __iomem *) ap->ioaddr.bmdma_addr;
host_stat = readb(mmio + ATA_DMA_STATUS);
writeb(host_stat | ATA_DMA_INTR | ATA_DMA_ERR,
mmio + ATA_DMA_STATUS);
return ((scr_read(ap, SCR_STATUS) & 0xf) == 0x3) ? 1 : 0;
}
+static inline int ata_try_flush_cache(struct ata_device *dev)
+{
+ return ata_id_wcache_enabled(dev->id) ||
+ ata_id_has_flush(dev->id) ||
+ ata_id_has_flush_ext(dev->id);
+}
+
#endif /* __LINUX_LIBATA_H__ */
git://git.onelab.eu / linux-2.6.git / blobdiff