#include <linux/interrupt.h>
#include <asm/io.h>
#include <linux/ata.h>
+#include <linux/workqueue.h>
/*
* compile-time options
#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 */
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 */
/* various lengths of time */
ATA_TMOUT_EDD = 5 * HZ, /* hueristic */
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,
ATA_QCFLAG_TIMEOUT = (1 << 0),
};
+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 scsi_device;
struct ata_port_operations;
struct scsi_cmnd *scsicmd;
void (*scsidone)(struct scsi_cmnd *);
- struct list_head node;
unsigned long flags; /* ATA_QCFLAG_xxx */
unsigned int tag;
unsigned int n_elem;
ata_qc_cb_t callback;
- struct semaphore sem;
+ struct completion *waiting;
void *private_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
- */
-
/* 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 */
};
-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 int udma_mask;
unsigned int cbl; /* cable type; ATA_CBL_xxx */
- struct ata_engine eng;
-
struct ata_device device[ATA_MAX_DEVICES];
struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
struct ata_host_stats stats;
struct ata_host_set *host_set;
- struct semaphore sem;
struct semaphore probe_sem;
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 packet_task;
+
+ struct work_struct pio_task;
+ unsigned int pio_task_state;
+ unsigned long pio_task_timeout;
+
+ struct work_struct probe_task;
void *private_data;
};
void (*phy_reset) (struct ata_port *ap);
void (*post_set_mode) (struct ata_port *ap);
+ 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 (*eng_timeout) (struct ata_port *ap);
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 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 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_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_dev_id_string(struct ata_device *dev, unsigned char *s,
+ unsigned int ofs, unsigned int len);
+extern void ata_bmdma_setup_mmio (struct ata_queued_cmd *qc);
extern void ata_bmdma_start_mmio (struct ata_queued_cmd *qc);
+extern void ata_bmdma_setup_pio (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_complete(struct ata_queued_cmd *qc, u8 drv_stat);
extern void ata_eng_timeout(struct ata_port *ap);
extern int ata_std_bios_param(struct scsi_device *sdev,
struct block_device *bdev,
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);
-}
-
static inline unsigned int ata_tag_valid(unsigned int tag)
{
return (tag < ATA_MAX_QUEUE) ? 1 : 0;
return status;
}
+static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
+{
+ qc->flags &= ~ATA_QCFLAG_DMA;
+ qc->tf.ctl |= ATA_NIEN;
+}
+
static inline struct ata_queued_cmd *ata_qc_from_tag (struct ata_port *ap,
unsigned int tag)
{
git://git.onelab.eu / linux-2.6.git / blobdiff