dwc_ahsata: Allow use with dcache enabled

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>

diff --git a/drivers/block/dwc_ahsata.c b/drivers/block/dwc_ahsata.c
index c9b71f7e1f92b3afc6fc26082140f9dd7d2aca47..98f2c52ee3313ce5b0f4c2e52b349a9e1bf9d22f 100644 (file)
--- a/drivers/block/dwc_ahsata.c
+++ b/drivers/block/dwc_ahsata.c
@@ -447,10 +447,13 @@ static int ahci_exec_ata_cmd(struct ahci_probe_ent *probe_ent,
        if (buf && buf_len)
                sg_count = ahci_fill_sg(probe_ent, port, buf, buf_len);
        opts = (sizeof(struct sata_fis_h2d) >> 2) | (sg_count << 16);
-       if (is_write)
+       if (is_write) {
                opts |= 0x40;
+               flush_cache((ulong)buf, buf_len);
+       }
        ahci_fill_cmd_slot(pp, cmd_slot, opts);
 
+       flush_cache((int)(pp->cmd_slot), AHCI_PORT_PRIV_DMA_SZ);
        writel_with_flush(1 << cmd_slot, &(port_mmio->ci));
 
        if (waiting_for_cmd_completed((u8 *)&(port_mmio->ci),
@@ -458,8 +461,12 @@ static int ahci_exec_ata_cmd(struct ahci_probe_ent *probe_ent,
                printf("timeout exit!\n");
                return -1;
        }
+       invalidate_dcache_range((int)(pp->cmd_slot),
+                               (int)(pp->cmd_slot)+AHCI_PORT_PRIV_DMA_SZ);
        debug("ahci_exec_ata_cmd: %d byte transferred.\n",
              pp->cmd_slot->status);
+       if (!is_write)
+               invalidate_dcache_range((ulong)buf, (ulong)buf+buf_len);
 
        return buf_len;
 }
@@ -468,7 +475,8 @@ static void ahci_set_feature(u8 dev, u8 port)
 {
        struct ahci_probe_ent *probe_ent =
                (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
-       struct sata_fis_h2d h2d, *cfis = &h2d;
+       struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
+       struct sata_fis_h2d *cfis = &h2d;
 
        memset(cfis, 0, sizeof(struct sata_fis_h2d));
        cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
@@ -615,7 +623,8 @@ static void dwc_ahsata_identify(int dev, u16 *id)
 {
        struct ahci_probe_ent *probe_ent =
                (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
-       struct sata_fis_h2d h2d, *cfis = &h2d;
+       struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
+       struct sata_fis_h2d *cfis = &h2d;
        u8 port = probe_ent->hard_port_no;
 
        memset(cfis, 0, sizeof(struct sata_fis_h2d));
@@ -645,7 +654,8 @@ static u32 dwc_ahsata_rw_cmd(int dev, u32 start, u32 blkcnt,
 {
        struct ahci_probe_ent *probe_ent =
                (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
-       struct sata_fis_h2d h2d, *cfis = &h2d;
+       struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
+       struct sata_fis_h2d *cfis = &h2d;
        u8 port = probe_ent->hard_port_no;
        u32 block;
 
@@ -675,7 +685,8 @@ void dwc_ahsata_flush_cache(int dev)
 {
        struct ahci_probe_ent *probe_ent =
                (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
-       struct sata_fis_h2d h2d, *cfis = &h2d;
+       struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
+       struct sata_fis_h2d *cfis = &h2d;
        u8 port = probe_ent->hard_port_no;
 
        memset(cfis, 0, sizeof(struct sata_fis_h2d));
@@ -692,7 +703,8 @@ static u32 dwc_ahsata_rw_cmd_ext(int dev, u32 start, lbaint_t blkcnt,
 {
        struct ahci_probe_ent *probe_ent =
                (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
-       struct sata_fis_h2d h2d, *cfis = &h2d;
+       struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
+       struct sata_fis_h2d *cfis = &h2d;
        u8 port = probe_ent->hard_port_no;
        u64 block;
 
@@ -728,7 +740,8 @@ u32 dwc_ahsata_rw_ncq_cmd(int dev, u32 start, lbaint_t blkcnt,
 {
        struct ahci_probe_ent *probe_ent =
                (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
-       struct sata_fis_h2d h2d, *cfis = &h2d;
+       struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
+       struct sata_fis_h2d *cfis = &h2d;
        u8 port = probe_ent->hard_port_no;
        u64 block;
 
@@ -769,7 +782,8 @@ void dwc_ahsata_flush_cache_ext(int dev)
 {
        struct ahci_probe_ent *probe_ent =
                (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
-       struct sata_fis_h2d h2d, *cfis = &h2d;
+       struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
+       struct sata_fis_h2d *cfis = &h2d;
        u8 port = probe_ent->hard_port_no;
 
        memset(cfis, 0, sizeof(struct sata_fis_h2d));
@@ -912,7 +926,9 @@ int scan_sata(int dev)
        u8 port = probe_ent->hard_port_no;
        block_dev_desc_t *pdev = &(sata_dev_desc[dev]);
 
-       id = (u16 *)malloc(ATA_ID_WORDS * 2);
+       id = (u16 *)memalign(ARCH_DMA_MINALIGN,
+                               roundup(ARCH_DMA_MINALIGN,
+                                       (ATA_ID_WORDS * 2)));
        if (!id) {
                printf("id malloc failed\n\r");
                return -1;