Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq

[linux-2.6-omap-h63xx.git] / drivers / scsi / aic7xxx / aic79xx_osm.c

diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 2be03e975d97109e371a30b1668dd22d6eb345e5..2d020405480c7755cae40a67dda23713971bbc40 100644 (file)
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -315,8 +315,8 @@ uint32_t aic79xx_slowcrc;
  */
 static char *aic79xx = NULL;
 
-MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
-MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver");
+MODULE_AUTHOR("Maintainer: Hannes Reinecke <hare@suse.de>");
+MODULE_DESCRIPTION("Adaptec AIC790X U320 SCSI Host Bus Adapter driver");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_VERSION(AIC79XX_DRIVER_VERSION);
 module_param(aic79xx, charp, 0444);
@@ -363,6 +363,8 @@ static int ahd_linux_run_command(struct ahd_softc*,
                                 struct scsi_cmnd *);
 static void ahd_linux_setup_tag_info_global(char *p);
 static int  aic79xx_setup(char *c);
+static void ahd_freeze_simq(struct ahd_softc *ahd);
+static void ahd_release_simq(struct ahd_softc *ahd);
 
 static int ahd_linux_unit;
 
@@ -374,21 +376,10 @@ static __inline void
 ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb)
 {
        struct scsi_cmnd *cmd;
-       int direction;
 
        cmd = scb->io_ctx;
-       direction = cmd->sc_data_direction;
        ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE);
-       if (cmd->use_sg != 0) {
-               struct scatterlist *sg;
-
-               sg = (struct scatterlist *)cmd->request_buffer;
-               pci_unmap_sg(ahd->dev_softc, sg, cmd->use_sg, direction);
-       } else if (cmd->request_bufflen != 0) {
-               pci_unmap_single(ahd->dev_softc,
-                                scb->platform_data->buf_busaddr,
-                                cmd->request_bufflen, direction);
-       }
+       scsi_dma_unmap(cmd);
 }
 
 /******************************** Macros **************************************/
@@ -775,6 +766,7 @@ struct scsi_host_template aic79xx_driver_template = {
        .max_sectors            = 8192,
        .cmd_per_lun            = 2,
        .use_clustering         = ENABLE_CLUSTERING,
+       .use_sg_chaining        = ENABLE_SG_CHAINING,
        .slave_alloc            = ahd_linux_slave_alloc,
        .slave_configure        = ahd_linux_slave_configure,
        .target_alloc           = ahd_linux_target_alloc,
@@ -1420,6 +1412,7 @@ ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
        u_int    col_idx;
        uint16_t mask;
        unsigned long flags;
+       int nseg;
 
        ahd_lock(ahd, &flags);
 
@@ -1492,18 +1485,17 @@ ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
        ahd_set_residual(scb, 0);
        ahd_set_sense_residual(scb, 0);
        scb->sg_count = 0;
-       if (cmd->use_sg != 0) {
-               void    *sg;
-               struct   scatterlist *cur_seg;
-               u_int    nseg;
-               int      dir;
-
-               cur_seg = (struct scatterlist *)cmd->request_buffer;
-               dir = cmd->sc_data_direction;
-               nseg = pci_map_sg(ahd->dev_softc, cur_seg,
-                                 cmd->use_sg, dir);
+
+       nseg = scsi_dma_map(cmd);
+       BUG_ON(nseg < 0);
+       if (nseg > 0) {
+               void *sg = scb->sg_list;
+               struct scatterlist *cur_seg;
+               int i;
+
                scb->platform_data->xfer_len = 0;
-               for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) {
+
+               scsi_for_each_sg(cmd, cur_seg, nseg, i) {
                        dma_addr_t addr;
                        bus_size_t len;
 
@@ -1511,22 +1503,8 @@ ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
                        len = sg_dma_len(cur_seg);
                        scb->platform_data->xfer_len += len;
                        sg = ahd_sg_setup(ahd, scb, sg, addr, len,
-                                         /*last*/nseg == 1);
+                                         i == (nseg - 1));
                }
-       } else if (cmd->request_bufflen != 0) {
-               void *sg;
-               dma_addr_t addr;
-               int dir;
-
-               sg = scb->sg_list;
-               dir = cmd->sc_data_direction;
-               addr = pci_map_single(ahd->dev_softc,
-                                     cmd->request_buffer,
-                                     cmd->request_bufflen, dir);
-               scb->platform_data->xfer_len = cmd->request_bufflen;
-               scb->platform_data->buf_busaddr = addr;
-               sg = ahd_sg_setup(ahd, scb, sg, addr,
-                                 cmd->request_bufflen, /*last*/TRUE);
        }
 
        LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
@@ -2016,13 +1994,13 @@ ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd)
        cmd->scsi_done(cmd);
 }
 
-void
+static void
 ahd_freeze_simq(struct ahd_softc *ahd)
 {
        scsi_block_requests(ahd->platform_data->host);
 }
 
-void
+static void
 ahd_release_simq(struct ahd_softc *ahd)
 {
        scsi_unblock_requests(ahd->platform_data->host);
@@ -2307,9 +2285,12 @@ static void ahd_linux_set_period(struct scsi_target *starget, int period)
        if (period < 8)
                period = 8;
        if (period < 10) {
-               ppr_options |= MSG_EXT_PPR_DT_REQ;
-               if (period == 8)
-                       ppr_options |= MSG_EXT_PPR_IU_REQ;
+               if (spi_max_width(starget)) {
+                       ppr_options |= MSG_EXT_PPR_DT_REQ;
+                       if (period == 8)
+                               ppr_options |= MSG_EXT_PPR_IU_REQ;
+               } else
+                       period = 10;
        }
 
        dt = ppr_options & MSG_EXT_PPR_DT_REQ;
@@ -2388,7 +2369,7 @@ static void ahd_linux_set_dt(struct scsi_target *starget, int dt)
                printf("%s: %s DT\n", ahd_name(ahd), 
                       dt ? "enabling" : "disabling");
 #endif
-       if (dt) {
+       if (dt && spi_max_width(starget)) {
                ppr_options |= MSG_EXT_PPR_DT_REQ;
                if (!width)
                        ahd_linux_set_width(starget, 1);
@@ -2470,7 +2451,7 @@ static void ahd_linux_set_iu(struct scsi_target *starget, int iu)
                       iu ? "enabling" : "disabling");
 #endif
 
-       if (iu) {
+       if (iu && spi_max_width(starget)) {
                ppr_options |= MSG_EXT_PPR_IU_REQ;
                ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */
        }
@@ -2510,7 +2491,7 @@ static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm)
                       rdstrm  ? "enabling" : "disabling");
 #endif
 
-       if (rdstrm)
+       if (rdstrm && spi_max_width(starget))
                ppr_options |= MSG_EXT_PPR_RD_STRM;
 
        ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
@@ -2546,7 +2527,7 @@ static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow)
                       wrflow ? "enabling" : "disabling");
 #endif
 
-       if (wrflow)
+       if (wrflow && spi_max_width(starget))
                ppr_options |= MSG_EXT_PPR_WR_FLOW;
 
        ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
@@ -2590,7 +2571,7 @@ static void ahd_linux_set_rti(struct scsi_target *starget, int rti)
                       rti ? "enabling" : "disabling");
 #endif
 
-       if (rti)
+       if (rti && spi_max_width(starget))
                ppr_options |= MSG_EXT_PPR_RTI;
 
        ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
@@ -2626,7 +2607,7 @@ static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
                       pcomp ? "Enable" : "Disable");
 #endif
 
-       if (pcomp) {
+       if (pcomp && spi_max_width(starget)) {
                uint8_t precomp;
 
                if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) {
@@ -2670,7 +2651,7 @@ static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold)
        unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
        unsigned long flags;
 
-       if (hold)
+       if (hold && spi_max_width(starget))
                ppr_options |= MSG_EXT_PPR_HOLD_MCS;
 
        ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,