X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=include%2Flinux%2Flibata.h;h=b064bfeb69ee236a189aa1d1c81adad8df24fbf8;hb=cd1d2d279a4b149301ef0316d12ba4b29424a802;hp=bc5a8d0c70902803fe63d4d6b3104e75bfa9c34e;hpb=acf63867ae06ef95eea7bf445ded2f05528a81b1;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/libata.h b/include/linux/libata.h
index bc5a8d0c709..b064bfeb69e 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -138,6 +138,7 @@ enum {
 	ATA_DFLAG_AN		= (1 << 7), /* AN configured */
 	ATA_DFLAG_HIPM		= (1 << 8), /* device supports HIPM */
 	ATA_DFLAG_DIPM		= (1 << 9), /* device supports DIPM */
+	ATA_DFLAG_DMADIR	= (1 << 10), /* device requires DMADIR */
 	ATA_DFLAG_CFG_MASK	= (1 << 12) - 1,
 
 	ATA_DFLAG_PIO		= (1 << 12), /* device limited to PIO mode */
@@ -278,7 +279,6 @@ enum {
 
 	/* 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,
 
 	/* ering size */
 	ATA_ERING_SIZE		= 32,
@@ -295,6 +295,7 @@ enum {
 	ATA_EH_SOFTRESET	= (1 << 1),
 	ATA_EH_HARDRESET	= (1 << 2),
 	ATA_EH_ENABLE_LINK	= (1 << 3),
+	ATA_EH_LPM		= (1 << 4),  /* link power management action */
 
 	ATA_EH_RESET_MASK	= ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
 	ATA_EH_PERDEV_MASK	= ATA_EH_REVALIDATE,
@@ -304,7 +305,6 @@ enum {
 	ATA_EHI_RESUME_LINK	= (1 << 1),  /* resume link (reset modifier) */
 	ATA_EHI_NO_AUTOPSY	= (1 << 2),  /* no autopsy */
 	ATA_EHI_QUIET		= (1 << 3),  /* be quiet */
-	ATA_EHI_LPM		= (1 << 4),  /* link power management action */
 
 	ATA_EHI_DID_SOFTRESET	= (1 << 16), /* already soft-reset this port */
 	ATA_EHI_DID_HARDRESET	= (1 << 17), /* already soft-reset this port */
@@ -457,24 +457,19 @@ struct ata_queued_cmd {
 	unsigned long		flags;		/* ATA_QCFLAG_xxx */
 	unsigned int		tag;
 	unsigned int		n_elem;
-	unsigned int		mapped_n_elem;
 
 	int			dma_dir;
 
-	unsigned int		pad_len;
 	unsigned int		sect_size;
 
 	unsigned int		nbytes;
-	unsigned int		raw_nbytes;
+	unsigned int		extrabytes;
 	unsigned int		curbytes;
 
 	struct scatterlist	*cursg;
 	unsigned int		cursg_ofs;
 
-	struct scatterlist	*last_sg;
-	struct scatterlist	saved_last_sg;
 	struct scatterlist	sgent;
-	struct scatterlist	extra_sg[2];
 
 	struct scatterlist	*sg;
 
@@ -619,9 +614,6 @@ struct ata_port {
 	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 */
@@ -1207,7 +1199,7 @@ static inline struct ata_link *ata_port_next_link(struct ata_link *link)
 		return ap->pmp_link;
 	}
 
-	if (++link - ap->pmp_link < ap->nr_pmp_links)
+	if (++link < ap->nr_pmp_links + ap->pmp_link)
 		return link;
 	return NULL;
 }
@@ -1345,6 +1337,11 @@ static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
 	return NULL;
 }
 
+static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
+{
+	return qc->nbytes - min(qc->extrabytes, qc->nbytes);
+}
+
 static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
 {
 	memset(tf, 0, sizeof(*tf));
@@ -1363,12 +1360,9 @@ static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
 	qc->flags = 0;
 	qc->cursg = NULL;
 	qc->cursg_ofs = 0;
-	qc->nbytes = qc->raw_nbytes = qc->curbytes = 0;
+	qc->nbytes = qc->extrabytes = qc->curbytes = 0;
 	qc->n_elem = 0;
-	qc->mapped_n_elem = 0;
 	qc->err_mask = 0;
-	qc->pad_len = 0;
-	qc->last_sg = NULL;
 	qc->sect_size = ATA_SECT_SIZE;
 
 	ata_tf_init(qc->dev, &qc->tf);
@@ -1423,19 +1417,6 @@ static inline unsigned int __ac_err_mask(u8 status)
 	return mask;
 }
 
-static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev)
-{
-	ap->pad_dma = 0;
-	ap->pad = dmam_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)
-{
-	dmam_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma);
-}
-
 static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
 {
 	return *(struct ata_port **)&host->hostdata[0];