Make it possible to pass mbus_dram_target_info to the sata_mv
driver via the platform data, and make the sata_mv driver program
the window registers based on this data if it is passed in.
Signed-off-by: Lennert Buytenhek <buytenh@xxxxxxxxxxx>
Index: linux-2.6.25-rc4/drivers/ata/sata_mv.c
===================================================================
--- linux-2.6.25-rc4.orig/drivers/ata/sata_mv.c
+++ linux-2.6.25-rc4/drivers/ata/sata_mv.c
@@ -74,6 +74,7 @@
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/ata_platform.h>
+#include <linux/mbus.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
@@ -352,6 +353,9 @@ enum {
#define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE)
#define HAS_PCI(host) (!((host)->ports[0]->flags & MV_FLAG_SOC))
+#define WINDOW_CTRL(i) (0x20030 + ((i) << 4))
+#define WINDOW_BASE(i) (0x20034 + ((i) << 4))
+
enum {
/* DMA boundary 0xffff is required by the s/g splitting
* we need on /length/ in mv_fill-sg().
@@ -2897,6 +2901,27 @@ static int mv_create_dma_pools(struct mv
return 0;
}
+static void mv_conf_mbus_windows(struct mv_host_priv *hpriv,
+ struct mbus_dram_target_info *dram)
+{
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ writel(0, hpriv->base + WINDOW_CTRL(i));
+ writel(0, hpriv->base + WINDOW_BASE(i));
+ }
+
+ for (i = 0; i < dram->num_cs; i++) {
+ struct mbus_dram_window *cs = dram->cs + i;
+
+ writel(((cs->size - 1) & 0xffff0000) |
+ (cs->mbus_attr << 8) |
+ (dram->mbus_dram_target_id << 4) | 1,
+ hpriv->base + WINDOW_CTRL(i));
+ writel(cs->base, hpriv->base + WINDOW_BASE(i));
+ }
+}
+
/**
* mv_platform_probe - handle a positive probe of an soc Marvell
* host
@@ -2951,6 +2976,12 @@ static int mv_platform_probe(struct plat
res->end - res->start + 1);
hpriv->base -= MV_SATAHC0_REG_BASE;
+ /*
+ * (Re-)program MBUS remapping windows if we are asked to.
+ */
+ if (mv_platform_data->dram != NULL)
+ mv_conf_mbus_windows(hpriv, mv_platform_data->dram);
+
rc = mv_create_dma_pools(hpriv, &pdev->dev);
if (rc)
return rc;
Index: linux-2.6.25-rc4/include/linux/ata_platform.h
===================================================================
--- linux-2.6.25-rc4.orig/include/linux/ata_platform.h
+++ linux-2.6.25-rc4/include/linux/ata_platform.h
@@ -27,7 +27,10 @@ extern int __devexit __pata_platform_rem
/*
* Marvell SATA private data
*/
+struct mbus_dram_target_info;
+
struct mv_sata_platform_data {
+ struct mbus_dram_target_info *dram;
int n_ports; /* number of sata ports */
};
--
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