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authorHauke Mehrtens <hauke@hauke-m.de>2013-08-05 16:17:05 +0000
committerHauke Mehrtens <hauke@hauke-m.de>2013-08-05 16:17:05 +0000
commit9d4145efe5808ecd7616902142fcdfceeefdb172 (patch)
tree172e459ad2f22399c10296a498d9b6fb64acdc71 /target/linux/generic/patches-3.8
parent9257d556c27d107102a216eca3472865591a77fb (diff)
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kernel: fix DMA error when BCM4331 is connected to BCM4706
The BCM4331 supports a PCIe max request size of 512 bytes and uses that, but the PCIe controller in the BCM4706 just supports 128 Bytes and that causes a DMA error for packages bigger than 126 bytes. This fixes the problem by setting the BCM4331 also to 128 Bytes. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> SVN-Revision: 37709
Diffstat (limited to 'target/linux/generic/patches-3.8')
-rw-r--r--target/linux/generic/patches-3.8/026-bcma_pcie_up_down.patch167
1 files changed, 167 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.8/026-bcma_pcie_up_down.patch b/target/linux/generic/patches-3.8/026-bcma_pcie_up_down.patch
new file mode 100644
index 0000000000..4dbf685b94
--- /dev/null
+++ b/target/linux/generic/patches-3.8/026-bcma_pcie_up_down.patch
@@ -0,0 +1,167 @@
+bcma patch adding bcma_core_pci_up() and bcma_core_pci_down(), this gets
+called by b43 and brcmsmac
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+
+--- a/drivers/bcma/driver_pci.c
++++ b/drivers/bcma/driver_pci.c
+@@ -31,7 +31,7 @@ static void bcma_pcie_write(struct bcma_
+ pcicore_write32(pc, BCMA_CORE_PCI_PCIEIND_DATA, data);
+ }
+
+-static void bcma_pcie_mdio_set_phy(struct bcma_drv_pci *pc, u8 phy)
++static void bcma_pcie_mdio_set_phy(struct bcma_drv_pci *pc, u16 phy)
+ {
+ u32 v;
+ int i;
+@@ -55,7 +55,7 @@ static void bcma_pcie_mdio_set_phy(struc
+ }
+ }
+
+-static u16 bcma_pcie_mdio_read(struct bcma_drv_pci *pc, u8 device, u8 address)
++static u16 bcma_pcie_mdio_read(struct bcma_drv_pci *pc, u16 device, u8 address)
+ {
+ int max_retries = 10;
+ u16 ret = 0;
+@@ -98,7 +98,7 @@ static u16 bcma_pcie_mdio_read(struct bc
+ return ret;
+ }
+
+-static void bcma_pcie_mdio_write(struct bcma_drv_pci *pc, u8 device,
++static void bcma_pcie_mdio_write(struct bcma_drv_pci *pc, u16 device,
+ u8 address, u16 data)
+ {
+ int max_retries = 10;
+@@ -137,6 +137,13 @@ static void bcma_pcie_mdio_write(struct
+ pcicore_write32(pc, BCMA_CORE_PCI_MDIO_CONTROL, 0);
+ }
+
++static u16 bcma_pcie_mdio_writeread(struct bcma_drv_pci *pc, u16 device,
++ u8 address, u16 data)
++{
++ bcma_pcie_mdio_write(pc, device, address, data);
++ return bcma_pcie_mdio_read(pc, device, address);
++}
++
+ /**************************************************
+ * Workarounds.
+ **************************************************/
+@@ -203,6 +210,25 @@ static void bcma_core_pci_config_fixup(s
+ }
+ }
+
++static void bcma_core_pci_power_save(struct bcma_drv_pci *pc, bool up)
++{
++ u16 data;
++
++ if (pc->core->id.rev >= 15 && pc->core->id.rev <= 20) {
++ data = up ? 0x74 : 0x7C;
++ bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1,
++ BCMA_CORE_PCI_MDIO_BLK1_MGMT1, 0x7F64);
++ bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1,
++ BCMA_CORE_PCI_MDIO_BLK1_MGMT3, data);
++ } else if (pc->core->id.rev >= 21 && pc->core->id.rev <= 22) {
++ data = up ? 0x75 : 0x7D;
++ bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1,
++ BCMA_CORE_PCI_MDIO_BLK1_MGMT1, 0x7E65);
++ bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1,
++ BCMA_CORE_PCI_MDIO_BLK1_MGMT3, data);
++ }
++}
++
+ /**************************************************
+ * Init.
+ **************************************************/
+@@ -262,7 +288,7 @@ out:
+ }
+ EXPORT_SYMBOL_GPL(bcma_core_pci_irq_ctl);
+
+-void bcma_core_pci_extend_L1timer(struct bcma_drv_pci *pc, bool extend)
++static void bcma_core_pci_extend_L1timer(struct bcma_drv_pci *pc, bool extend)
+ {
+ u32 w;
+
+@@ -274,4 +300,38 @@ void bcma_core_pci_extend_L1timer(struct
+ bcma_pcie_write(pc, BCMA_CORE_PCI_DLLP_PMTHRESHREG, w);
+ bcma_pcie_read(pc, BCMA_CORE_PCI_DLLP_PMTHRESHREG);
+ }
+-EXPORT_SYMBOL_GPL(bcma_core_pci_extend_L1timer);
++
++void bcma_core_pci_up(struct bcma_bus *bus)
++{
++ struct bcma_drv_pci *pc;
++
++ if (bus->hosttype != BCMA_HOSTTYPE_PCI)
++ return;
++
++ pc = &bus->drv_pci[0];
++
++ bcma_core_pci_power_save(pc, true);
++
++ bcma_core_pci_extend_L1timer(pc, true);
++
++ if ((pc->core->id.rev == 18 || pc->core->id.rev == 19) &&
++ bus->boardinfo.vendor != PCI_VENDOR_ID_APPLE) {
++ pcie_set_readrq(bus->host_pci, 128);
++ }
++}
++EXPORT_SYMBOL_GPL(bcma_core_pci_up);
++
++void bcma_core_pci_down(struct bcma_bus *bus)
++{
++ struct bcma_drv_pci *pc;
++
++ if (bus->hosttype != BCMA_HOSTTYPE_PCI)
++ return;
++
++ pc = &bus->drv_pci[0];
++
++ bcma_core_pci_extend_L1timer(pc, false);
++
++ bcma_core_pci_power_save(pc, false);
++}
++EXPORT_SYMBOL_GPL(bcma_core_pci_down);
+--- a/include/linux/bcma/bcma_driver_pci.h
++++ b/include/linux/bcma/bcma_driver_pci.h
+@@ -181,10 +181,31 @@ struct pci_dev;
+
+ #define BCMA_CORE_PCI_CFG_DEVCTRL 0xd8
+
++#define BCMA_CORE_PCI_
++
++/* MDIO devices (SERDES modules) */
++#define BCMA_CORE_PCI_MDIO_IEEE0 0x000
++#define BCMA_CORE_PCI_MDIO_IEEE1 0x001
++#define BCMA_CORE_PCI_MDIO_BLK0 0x800
++#define BCMA_CORE_PCI_MDIO_BLK1 0x801
++#define BCMA_CORE_PCI_MDIO_BLK1_MGMT0 0x16
++#define BCMA_CORE_PCI_MDIO_BLK1_MGMT1 0x17
++#define BCMA_CORE_PCI_MDIO_BLK1_MGMT2 0x18
++#define BCMA_CORE_PCI_MDIO_BLK1_MGMT3 0x19
++#define BCMA_CORE_PCI_MDIO_BLK1_MGMT4 0x1A
++#define BCMA_CORE_PCI_MDIO_BLK2 0x802
++#define BCMA_CORE_PCI_MDIO_BLK3 0x803
++#define BCMA_CORE_PCI_MDIO_BLK4 0x804
++#define BCMA_CORE_PCI_MDIO_TXPLL 0x808 /* TXPLL register block idx */
++#define BCMA_CORE_PCI_MDIO_TXCTRL0 0x820
++#define BCMA_CORE_PCI_MDIO_SERDESID 0x831
++#define BCMA_CORE_PCI_MDIO_RXCTRL0 0x840
++
+ /* PCIE Root Capability Register bits (Host mode only) */
+ #define BCMA_CORE_PCI_RC_CRS_VISIBILITY 0x0001
+
+ struct bcma_drv_pci;
++struct bcma_bus;
+
+ #ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE
+ struct bcma_drv_pci_host {
+@@ -219,7 +240,8 @@ struct bcma_drv_pci {
+ extern void bcma_core_pci_init(struct bcma_drv_pci *pc);
+ extern int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc,
+ struct bcma_device *core, bool enable);
+-extern void bcma_core_pci_extend_L1timer(struct bcma_drv_pci *pc, bool extend);
++extern void bcma_core_pci_up(struct bcma_bus *bus);
++extern void bcma_core_pci_down(struct bcma_bus *bus);
+
+ extern int bcma_core_pci_pcibios_map_irq(const struct pci_dev *dev);
+ extern int bcma_core_pci_plat_dev_init(struct pci_dev *dev);