diff options
Diffstat (limited to 'target/linux/sunxi/patches-3.12/190-ahci-missing-dma-for-sunxi.patch')
| -rw-r--r-- | target/linux/sunxi/patches-3.12/190-ahci-missing-dma-for-sunxi.patch | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/target/linux/sunxi/patches-3.12/190-ahci-missing-dma-for-sunxi.patch b/target/linux/sunxi/patches-3.12/190-ahci-missing-dma-for-sunxi.patch deleted file mode 100644 index c7a5299..0000000 --- a/target/linux/sunxi/patches-3.12/190-ahci-missing-dma-for-sunxi.patch +++ /dev/null @@ -1,60 +0,0 @@ -From a4c21089299ba411d998b16423a76cbae111194e Mon Sep 17 00:00:00 2001 -From: Oliver Schinagl <oliver@schinagl.nl> -Date: Mon, 2 Dec 2013 16:13:32 +0100 -Subject: [PATCH] RFC: AHCI: libahci is missing DMA - -The Allwinner sunxi platforms have patched in the following to enable -DMA. This patch enables DMA controllers for the SUNXI Architecture. - -Signed-off-by: Olliver Schinagl <oliver@schinagl.nl> ---- - drivers/ata/ahci.h | 6 ++++++ - drivers/ata/libahci.c | 8 ++++++++ - 2 files changed, 14 insertions(+) - -diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h -index 2289efd..2bf2423 100644 ---- a/drivers/ata/ahci.h -+++ b/drivers/ata/ahci.h -@@ -138,6 +138,7 @@ enum { - PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */ - PORT_FBS = 0x40, /* FIS-based Switching */ - PORT_DEVSLP = 0x44, /* device sleep */ -+ PORT_DMA = 0x70, /* direct memory access */ - - /* PORT_IRQ_{STAT,MASK} bits */ - PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */ -@@ -209,6 +210,11 @@ enum { - PORT_DEVSLP_DSP = (1 << 1), /* DevSlp present */ - PORT_DEVSLP_ADSE = (1 << 0), /* Aggressive DevSlp enable */ - -+ /* PORT_DMA bits */ -+ PORT_DMA_SETUP_OFFSET = 8, /* dma setup offset */ -+ PORT_DMA_SETUP_MASK = (0xff << PORT_DMA_SETUP_OFFSET),/* dma mask */ -+ PORT_DMA_SETUP_INIT = (0x44 << 0), -+ - /* hpriv->flags bits */ - - #define AHCI_HFLAGS(flags) .private_data = (void *)(flags) -diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c -index c482f8c..d697a74 100644 ---- a/drivers/ata/libahci.c -+++ b/drivers/ata/libahci.c -@@ -570,6 +570,14 @@ void ahci_start_engine(struct ata_port *ap) - void __iomem *port_mmio = ahci_port_base(ap); - u32 tmp; - -+#ifdef CONFIG_ARCH_SUNXI -+ /* Setup DMA before DMA start */ -+ tmp = readl(port_mmio + PORT_DMA); -+ tmp &= ~PORT_DMA_SETUP_MASK; -+ tmp |= PORT_DMA_SETUP_INIT << PORT_DMA_SETUP_OFFSET; -+ writel(tmp, port_mmio + PORT_DMA); -+#endif -+ - /* start DMA */ - tmp = readl(port_mmio + PORT_CMD); - tmp |= PORT_CMD_START; --- -1.8.5.1 - |