Merge branch 'master'

[linux-2.6] / include / linux / libata.h

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 364cd11456f6dc9985a10fc0ef46eb127722d293..dcd17e7458ab602684db8cc965006267969e028f 100644 (file)
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -176,6 +176,13 @@ enum hsm_task_states {
        HSM_ST_ERR,
 };
 
+enum ata_completion_errors {
+       AC_ERR_OTHER            = (1 << 0),
+       AC_ERR_DEV              = (1 << 1),
+       AC_ERR_ATA_BUS          = (1 << 2),
+       AC_ERR_HOST_BUS         = (1 << 3),
+};
+
 /* forward declarations */
 struct scsi_device;
 struct ata_port_operations;
@@ -183,7 +190,7 @@ struct ata_port;
 struct ata_queued_cmd;
 
 /* typedefs */
-typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc, u8 drv_stat);
+typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc, unsigned int err_mask);
 
 struct ata_ioports {
        unsigned long           cmd_addr;
@@ -465,7 +472,7 @@ extern void ata_bmdma_start (struct ata_queued_cmd *qc);
 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, unsigned int err_mask);
 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 *));
@@ -753,4 +760,34 @@ static inline int ata_try_flush_cache(const struct ata_device *dev)
               ata_id_has_flush_ext(dev->id);
 }
 
+static inline unsigned int ac_err_mask(u8 status)
+{
+       if (status & ATA_BUSY)
+               return AC_ERR_ATA_BUS;
+       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__ */