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Diffstat (limited to 'target/linux/mvebu/patches-3.10/0197-xhci-fix-dma-mask-setup-in-xhci.c.patch')
-rw-r--r--target/linux/mvebu/patches-3.10/0197-xhci-fix-dma-mask-setup-in-xhci.c.patch124
1 files changed, 0 insertions, 124 deletions
diff --git a/target/linux/mvebu/patches-3.10/0197-xhci-fix-dma-mask-setup-in-xhci.c.patch b/target/linux/mvebu/patches-3.10/0197-xhci-fix-dma-mask-setup-in-xhci.c.patch
deleted file mode 100644
index 1d2e18b52f..0000000000
--- a/target/linux/mvebu/patches-3.10/0197-xhci-fix-dma-mask-setup-in-xhci.c.patch
+++ /dev/null
@@ -1,124 +0,0 @@
-From 5cb802766e9cdc9a56e8ce8e4686692ebbcfb5cc Mon Sep 17 00:00:00 2001
-From: Xenia Ragiadakou <burzalodowa@gmail.com>
-Date: Mon, 23 Dec 2013 16:59:02 +0100
-Subject: [PATCH 197/203] xhci: fix dma mask setup in xhci.c
-
-The function dma_set_mask() tests internally whether the dma_mask pointer
-for the device is initialized and fails if the dma_mask pointer is NULL.
-On pci platforms, the device dma_mask pointer is initialized, when pci
-devices are enumerated, to point to the pci_dev->dma_mask which is 0xffffffff.
-However, for non-pci platforms, the dma_mask pointer may not be initialized
-and in that case dma_set_mask() will fail.
-
-This patch initializes the dma_mask and the coherent_dma_mask to 32bits
-in xhci_plat_probe(), before the call to usb_create_hcd() that sets the
-"uses_dma" flag for the usb bus and the call to usb_add_hcd() that creates
-coherent dma pools for the usb hcd.
-
-Moreover, a call to dma_set_mask() does not set the device coherent_dma_mask.
-Since the xhci-hcd driver calls dma_alloc_coherent() and dma_pool_alloc()
-to allocate consistent DMA memory blocks, the coherent DMA address mask
-has to be set explicitly.
-
-This patch sets the coherent_dma_mask to 64bits in xhci_gen_setup() when
-the xHC is capable for 64-bit DMA addressing.
-
-If dma_set_mask() succeeds, for a given bitmask, it is guaranteed that
-the given bitmask is also supported for consistent DMA mappings.
-
-Other changes introduced in this patch are:
-
-- The return value of dma_set_mask() is checked to ensure that the required
- dma bitmask conforms with the host system's addressing capabilities.
-
-- The dma_mask setup code for the non-primary hcd was removed since both
- primary and non-primary hcd refer to the same generic device whose
- dma_mask and coherent_dma_mask are already set during the setup of
- the primary hcd.
-
-- The code for reading the HCCPARAMS register to find out the addressing
- capabilities of xHC was removed since its value is already cached in
- xhci->hccparams.
-
-- hcd->self.controller was replaced with the dev variable since it is
- already available.
-
-Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
-Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
-
-Conflicts:
- drivers/usb/host/xhci-plat.c
----
- drivers/usb/host/xhci-plat.c | 10 ++++++++++
- drivers/usb/host/xhci.c | 19 +++++--------------
- 2 files changed, 15 insertions(+), 14 deletions(-)
-
---- a/drivers/usb/host/xhci-plat.c
-+++ b/drivers/usb/host/xhci-plat.c
-@@ -15,6 +15,7 @@
- #include <linux/module.h>
- #include <linux/slab.h>
- #include <linux/of.h>
-+#include <linux/dma-mapping.h>
-
- #include "xhci.h"
-
-@@ -105,6 +106,15 @@ static int xhci_plat_probe(struct platfo
- if (!res)
- return -ENODEV;
-
-+ /* Initialize dma_mask and coherent_dma_mask to 32-bits */
-+ ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
-+ if (ret)
-+ return ret;
-+ if (!pdev->dev.dma_mask)
-+ pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
-+ else
-+ dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
-+
- hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
- if (!hcd)
- return -ENOMEM;
---- a/drivers/usb/host/xhci.c
-+++ b/drivers/usb/host/xhci.c
-@@ -4657,7 +4657,6 @@ int xhci_gen_setup(struct usb_hcd *hcd,
- struct xhci_hcd *xhci;
- struct device *dev = hcd->self.controller;
- int retval;
-- u32 temp;
-
- /* Accept arbitrarily long scatter-gather lists */
- hcd->self.sg_tablesize = ~0;
-@@ -4685,14 +4684,6 @@ int xhci_gen_setup(struct usb_hcd *hcd,
- /* xHCI private pointer was set in xhci_pci_probe for the second
- * registered roothub.
- */
-- xhci = hcd_to_xhci(hcd);
-- temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
-- if (HCC_64BIT_ADDR(temp)) {
-- xhci_dbg(xhci, "Enabling 64-bit DMA addresses.\n");
-- dma_set_mask(hcd->self.controller, DMA_BIT_MASK(64));
-- } else {
-- dma_set_mask(hcd->self.controller, DMA_BIT_MASK(32));
-- }
- return 0;
- }
-
-@@ -4731,12 +4722,12 @@ int xhci_gen_setup(struct usb_hcd *hcd,
- goto error;
- xhci_dbg(xhci, "Reset complete\n");
-
-- temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
-- if (HCC_64BIT_ADDR(temp)) {
-+ /* Set dma_mask and coherent_dma_mask to 64-bits,
-+ * if xHC supports 64-bit addressing */
-+ if (HCC_64BIT_ADDR(xhci->hcc_params) &&
-+ !dma_set_mask(dev, DMA_BIT_MASK(64))) {
- xhci_dbg(xhci, "Enabling 64-bit DMA addresses.\n");
-- dma_set_mask(hcd->self.controller, DMA_BIT_MASK(64));
-- } else {
-- dma_set_mask(hcd->self.controller, DMA_BIT_MASK(32));
-+ dma_set_coherent_mask(dev, DMA_BIT_MASK(64));
- }
-
- xhci_dbg(xhci, "Calling HCD init\n");