diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.3/027-MIPS-BCM63XX-Add-PCIe-Support-for-BCM6328.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.3/027-MIPS-BCM63XX-Add-PCIe-Support-for-BCM6328.patch | 427 |
1 files changed, 427 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.3/027-MIPS-BCM63XX-Add-PCIe-Support-for-BCM6328.patch b/target/linux/brcm63xx/patches-3.3/027-MIPS-BCM63XX-Add-PCIe-Support-for-BCM6328.patch new file mode 100644 index 0000000000..ff375cd2a9 --- /dev/null +++ b/target/linux/brcm63xx/patches-3.3/027-MIPS-BCM63XX-Add-PCIe-Support-for-BCM6328.patch @@ -0,0 +1,427 @@ +From 45655e79f84e35c13b8964b961d804e64b3aca91 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jonas.gorski@gmail.com> +Date: Wed, 13 Jun 2012 17:07:13 +0100 +Subject: [PATCH 6/8] MIPS: BCM63XX: Add PCIe Support for BCM6328 + +Add support for the PCIe port found on BCM6328. + +Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> +Cc: linux-mips@linux-mips.org +Cc: Maxime Bizon <mbizon@freebox.fr> +Cc: Florian Fainelli <florian@openwrt.org> +Cc: Kevin Cernekee <cernekee@gmail.com> +Patchwork: https://patchwork.linux-mips.org/patch/3956/ +Reviewed-by: Florian Fainelli <florian@openwrt.org> +Signed-off-by: Ralf Baechle <ralf@linux-mips.org> +--- + arch/mips/bcm63xx/Kconfig | 1 + + arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h | 9 ++ + arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h | 6 + + arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h | 54 ++++++++++ + arch/mips/pci/ops-bcm63xx.c | 61 +++++++++++ + arch/mips/pci/pci-bcm63xx.c | 112 +++++++++++++++++++++ + arch/mips/pci/pci-bcm63xx.h | 5 + + 7 files changed, 248 insertions(+), 0 deletions(-) + +--- a/arch/mips/bcm63xx/Kconfig ++++ b/arch/mips/bcm63xx/Kconfig +@@ -3,6 +3,7 @@ menu "CPU support" + + config BCM63XX_CPU_6328 + bool "support 6328 CPU" ++ select HW_HAS_PCI + + config BCM63XX_CPU_6338 + bool "support 6338 CPU" +--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h ++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h +@@ -122,6 +122,7 @@ enum bcm63xx_regs_set { + RSET_USBH_PRIV, + RSET_MPI, + RSET_PCMCIA, ++ RSET_PCIE, + RSET_DSL, + RSET_ENET0, + RSET_ENET1, +@@ -188,6 +189,7 @@ enum bcm63xx_regs_set { + #define BCM_6328_USBH_PRIV_BASE (0xdeadbeef) + #define BCM_6328_MPI_BASE (0xdeadbeef) + #define BCM_6328_PCMCIA_BASE (0xdeadbeef) ++#define BCM_6328_PCIE_BASE (0xb0e40000) + #define BCM_6328_SDRAM_REGS_BASE (0xdeadbeef) + #define BCM_6328_DSL_BASE (0xb0001900) + #define BCM_6328_UBUS_BASE (0xdeadbeef) +@@ -232,6 +234,7 @@ enum bcm63xx_regs_set { + #define BCM_6338_USBH_PRIV_BASE (0xdeadbeef) + #define BCM_6338_MPI_BASE (0xfffe3160) + #define BCM_6338_PCMCIA_BASE (0xdeadbeef) ++#define BCM_6338_PCIE_BASE (0xdeadbeef) + #define BCM_6338_SDRAM_REGS_BASE (0xfffe3100) + #define BCM_6338_DSL_BASE (0xfffe1000) + #define BCM_6338_UBUS_BASE (0xdeadbeef) +@@ -279,6 +282,7 @@ enum bcm63xx_regs_set { + #define BCM_6345_ENETSW_BASE (0xdeadbeef) + #define BCM_6345_PCMCIA_BASE (0xfffe2028) + #define BCM_6345_MPI_BASE (0xfffe2000) ++#define BCM_6345_PCIE_BASE (0xdeadbeef) + #define BCM_6345_OHCI0_BASE (0xfffe2100) + #define BCM_6345_OHCI_PRIV_BASE (0xfffe2200) + #define BCM_6345_USBH_PRIV_BASE (0xdeadbeef) +@@ -320,6 +324,7 @@ enum bcm63xx_regs_set { + #define BCM_6348_USBH_PRIV_BASE (0xdeadbeef) + #define BCM_6348_MPI_BASE (0xfffe2000) + #define BCM_6348_PCMCIA_BASE (0xfffe2054) ++#define BCM_6348_PCIE_BASE (0xdeadbeef) + #define BCM_6348_SDRAM_REGS_BASE (0xfffe2300) + #define BCM_6348_M2M_BASE (0xfffe2800) + #define BCM_6348_DSL_BASE (0xfffe3000) +@@ -362,6 +367,7 @@ enum bcm63xx_regs_set { + #define BCM_6358_USBH_PRIV_BASE (0xfffe1500) + #define BCM_6358_MPI_BASE (0xfffe1000) + #define BCM_6358_PCMCIA_BASE (0xfffe1054) ++#define BCM_6358_PCIE_BASE (0xdeadbeef) + #define BCM_6358_SDRAM_REGS_BASE (0xfffe2300) + #define BCM_6358_M2M_BASE (0xdeadbeef) + #define BCM_6358_DSL_BASE (0xfffe3000) +@@ -405,6 +411,7 @@ enum bcm63xx_regs_set { + #define BCM_6368_USBH_PRIV_BASE (0xb0001700) + #define BCM_6368_MPI_BASE (0xb0001000) + #define BCM_6368_PCMCIA_BASE (0xb0001054) ++#define BCM_6368_PCIE_BASE (0xdeadbeef) + #define BCM_6368_SDRAM_REGS_BASE (0xdeadbeef) + #define BCM_6368_M2M_BASE (0xdeadbeef) + #define BCM_6368_DSL_BASE (0xdeadbeef) +@@ -453,6 +460,7 @@ extern const unsigned long *bcm63xx_regs + __GEN_RSET_BASE(__cpu, USBH_PRIV) \ + __GEN_RSET_BASE(__cpu, MPI) \ + __GEN_RSET_BASE(__cpu, PCMCIA) \ ++ __GEN_RSET_BASE(__cpu, PCIE) \ + __GEN_RSET_BASE(__cpu, DSL) \ + __GEN_RSET_BASE(__cpu, ENET0) \ + __GEN_RSET_BASE(__cpu, ENET1) \ +@@ -493,6 +501,7 @@ extern const unsigned long *bcm63xx_regs + [RSET_USBH_PRIV] = BCM_## __cpu ##_USBH_PRIV_BASE, \ + [RSET_MPI] = BCM_## __cpu ##_MPI_BASE, \ + [RSET_PCMCIA] = BCM_## __cpu ##_PCMCIA_BASE, \ ++ [RSET_PCIE] = BCM_## __cpu ##_PCIE_BASE, \ + [RSET_DSL] = BCM_## __cpu ##_DSL_BASE, \ + [RSET_ENET0] = BCM_## __cpu ##_ENET0_BASE, \ + [RSET_ENET1] = BCM_## __cpu ##_ENET1_BASE, \ +--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h ++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h +@@ -40,6 +40,10 @@ + #define BCM_CB_MEM_END_PA (BCM_CB_MEM_BASE_PA + \ + BCM_CB_MEM_SIZE - 1) + ++#define BCM_PCIE_MEM_BASE_PA 0x10f00000 ++#define BCM_PCIE_MEM_SIZE (16 * 1024 * 1024) ++#define BCM_PCIE_MEM_END_PA (BCM_PCIE_MEM_BASE_PA + \ ++ BCM_PCIE_MEM_SIZE - 1) + + /* + * Internal registers are accessed through KSEG3 +@@ -85,6 +89,8 @@ + #define bcm_mpi_writel(v, o) bcm_rset_writel(RSET_MPI, (v), (o)) + #define bcm_pcmcia_readl(o) bcm_rset_readl(RSET_PCMCIA, (o)) + #define bcm_pcmcia_writel(v, o) bcm_rset_writel(RSET_PCMCIA, (v), (o)) ++#define bcm_pcie_readl(o) bcm_rset_readl(RSET_PCIE, (o)) ++#define bcm_pcie_writel(v, o) bcm_rset_writel(RSET_PCIE, (v), (o)) + #define bcm_sdram_readl(o) bcm_rset_readl(RSET_SDRAM, (o)) + #define bcm_sdram_writel(v, o) bcm_rset_writel(RSET_SDRAM, (v), (o)) + #define bcm_memc_readl(o) bcm_rset_readl(RSET_MEMC, (o)) +--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h ++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h +@@ -1169,6 +1169,9 @@ + /************************************************************************* + * _REG relative to RSET_MISC + *************************************************************************/ ++#define MISC_SERDES_CTRL_REG 0x0 ++#define SERDES_PCIE_EN (1 << 0) ++#define SERDES_PCIE_EXD_EN (1 << 15) + + #define MISC_STRAPBUS_6328_REG 0x240 + #define STRAPBUS_6328_FCVO_SHIFT 7 +@@ -1176,4 +1179,55 @@ + #define STRAPBUS_6328_BOOT_SEL_SERIAL (1 << 28) + #define STRAPBUS_6328_BOOT_SEL_NAND (0 << 28) + ++/************************************************************************* ++ * _REG relative to RSET_PCIE ++ *************************************************************************/ ++ ++#define PCIE_CONFIG2_REG 0x408 ++#define CONFIG2_BAR1_SIZE_EN 1 ++#define CONFIG2_BAR1_SIZE_MASK 0xf ++ ++#define PCIE_IDVAL3_REG 0x43c ++#define IDVAL3_CLASS_CODE_MASK 0xffffff ++#define IDVAL3_SUBCLASS_SHIFT 8 ++#define IDVAL3_CLASS_SHIFT 16 ++ ++#define PCIE_DLSTATUS_REG 0x1048 ++#define DLSTATUS_PHYLINKUP (1 << 13) ++ ++#define PCIE_BRIDGE_OPT1_REG 0x2820 ++#define OPT1_RD_BE_OPT_EN (1 << 7) ++#define OPT1_RD_REPLY_BE_FIX_EN (1 << 9) ++#define OPT1_PCIE_BRIDGE_HOLE_DET_EN (1 << 11) ++#define OPT1_L1_INT_STATUS_MASK_POL (1 << 12) ++ ++#define PCIE_BRIDGE_OPT2_REG 0x2824 ++#define OPT2_UBUS_UR_DECODE_DIS (1 << 2) ++#define OPT2_TX_CREDIT_CHK_EN (1 << 4) ++#define OPT2_CFG_TYPE1_BD_SEL (1 << 7) ++#define OPT2_CFG_TYPE1_BUS_NO_SHIFT 16 ++#define OPT2_CFG_TYPE1_BUS_NO_MASK (0xff << OPT2_CFG_TYPE1_BUS_NO_SHIFT) ++ ++#define PCIE_BRIDGE_BAR0_BASEMASK_REG 0x2828 ++#define PCIE_BRIDGE_BAR1_BASEMASK_REG 0x2830 ++#define BASEMASK_REMAP_EN (1 << 0) ++#define BASEMASK_SWAP_EN (1 << 1) ++#define BASEMASK_MASK_SHIFT 4 ++#define BASEMASK_MASK_MASK (0xfff << BASEMASK_MASK_SHIFT) ++#define BASEMASK_BASE_SHIFT 20 ++#define BASEMASK_BASE_MASK (0xfff << BASEMASK_BASE_SHIFT) ++ ++#define PCIE_BRIDGE_BAR0_REBASE_ADDR_REG 0x282c ++#define PCIE_BRIDGE_BAR1_REBASE_ADDR_REG 0x2834 ++#define REBASE_ADDR_BASE_SHIFT 20 ++#define REBASE_ADDR_BASE_MASK (0xfff << REBASE_ADDR_BASE_SHIFT) ++ ++#define PCIE_BRIDGE_RC_INT_MASK_REG 0x2854 ++#define PCIE_RC_INT_A (1 << 0) ++#define PCIE_RC_INT_B (1 << 1) ++#define PCIE_RC_INT_C (1 << 2) ++#define PCIE_RC_INT_D (1 << 3) ++ ++#define PCIE_DEVICE_OFFSET 0x8000 ++ + #endif /* BCM63XX_REGS_H_ */ +--- a/arch/mips/pci/ops-bcm63xx.c ++++ b/arch/mips/pci/ops-bcm63xx.c +@@ -465,3 +465,64 @@ static void bcm63xx_fixup(struct pci_dev + + DECLARE_PCI_FIXUP_ENABLE(PCI_ANY_ID, PCI_ANY_ID, bcm63xx_fixup); + #endif ++ ++static int bcm63xx_pcie_can_access(struct pci_bus *bus, int devfn) ++{ ++ switch (bus->number) { ++ case PCIE_BUS_BRIDGE: ++ return (PCI_SLOT(devfn) == 0); ++ case PCIE_BUS_DEVICE: ++ if (PCI_SLOT(devfn) == 0) ++ return bcm_pcie_readl(PCIE_DLSTATUS_REG) ++ & DLSTATUS_PHYLINKUP; ++ default: ++ return false; ++ } ++} ++ ++static int bcm63xx_pcie_read(struct pci_bus *bus, unsigned int devfn, ++ int where, int size, u32 *val) ++{ ++ u32 data; ++ u32 reg = where & ~3; ++ ++ if (!bcm63xx_pcie_can_access(bus, devfn)) ++ return PCIBIOS_DEVICE_NOT_FOUND; ++ ++ if (bus->number == PCIE_BUS_DEVICE) ++ reg += PCIE_DEVICE_OFFSET; ++ ++ data = bcm_pcie_readl(reg); ++ ++ *val = postprocess_read(data, where, size); ++ ++ return PCIBIOS_SUCCESSFUL; ++ ++} ++ ++static int bcm63xx_pcie_write(struct pci_bus *bus, unsigned int devfn, ++ int where, int size, u32 val) ++{ ++ u32 data; ++ u32 reg = where & ~3; ++ ++ if (!bcm63xx_pcie_can_access(bus, devfn)) ++ return PCIBIOS_DEVICE_NOT_FOUND; ++ ++ if (bus->number == PCIE_BUS_DEVICE) ++ reg += PCIE_DEVICE_OFFSET; ++ ++ ++ data = bcm_pcie_readl(reg); ++ ++ data = preprocess_write(data, val, where, size); ++ bcm_pcie_writel(data, reg); ++ ++ return PCIBIOS_SUCCESSFUL; ++} ++ ++ ++struct pci_ops bcm63xx_pcie_ops = { ++ .read = bcm63xx_pcie_read, ++ .write = bcm63xx_pcie_write ++}; +--- a/arch/mips/pci/pci-bcm63xx.c ++++ b/arch/mips/pci/pci-bcm63xx.c +@@ -10,6 +10,7 @@ + #include <linux/pci.h> + #include <linux/kernel.h> + #include <linux/init.h> ++#include <linux/delay.h> + #include <asm/bootinfo.h> + + #include "pci-bcm63xx.h" +@@ -71,6 +72,26 @@ struct pci_controller bcm63xx_cb_control + }; + #endif + ++static struct resource bcm_pcie_mem_resource = { ++ .name = "bcm63xx PCIe memory space", ++ .start = BCM_PCIE_MEM_BASE_PA, ++ .end = BCM_PCIE_MEM_END_PA, ++ .flags = IORESOURCE_MEM, ++}; ++ ++static struct resource bcm_pcie_io_resource = { ++ .name = "bcm63xx PCIe IO space", ++ .start = 0, ++ .end = 0, ++ .flags = 0, ++}; ++ ++struct pci_controller bcm63xx_pcie_controller = { ++ .pci_ops = &bcm63xx_pcie_ops, ++ .io_resource = &bcm_pcie_io_resource, ++ .mem_resource = &bcm_pcie_mem_resource, ++}; ++ + static u32 bcm63xx_int_cfg_readl(u32 reg) + { + u32 tmp; +@@ -94,6 +115,95 @@ static void bcm63xx_int_cfg_writel(u32 v + + void __iomem *pci_iospace_start; + ++static void __init bcm63xx_reset_pcie(void) ++{ ++ u32 val; ++ ++ /* enable clock */ ++ val = bcm_perf_readl(PERF_CKCTL_REG); ++ val |= CKCTL_6328_PCIE_EN; ++ bcm_perf_writel(val, PERF_CKCTL_REG); ++ ++ /* enable SERDES */ ++ val = bcm_misc_readl(MISC_SERDES_CTRL_REG); ++ val |= SERDES_PCIE_EN | SERDES_PCIE_EXD_EN; ++ bcm_misc_writel(val, MISC_SERDES_CTRL_REG); ++ ++ /* reset the PCIe core */ ++ val = bcm_perf_readl(PERF_SOFTRESET_6328_REG); ++ ++ val &= ~SOFTRESET_6328_PCIE_MASK; ++ val &= ~SOFTRESET_6328_PCIE_CORE_MASK; ++ val &= ~SOFTRESET_6328_PCIE_HARD_MASK; ++ val &= ~SOFTRESET_6328_PCIE_EXT_MASK; ++ bcm_perf_writel(val, PERF_SOFTRESET_6328_REG); ++ mdelay(10); ++ ++ val |= SOFTRESET_6328_PCIE_MASK; ++ val |= SOFTRESET_6328_PCIE_CORE_MASK; ++ val |= SOFTRESET_6328_PCIE_HARD_MASK; ++ bcm_perf_writel(val, PERF_SOFTRESET_6328_REG); ++ mdelay(10); ++ ++ val |= SOFTRESET_6328_PCIE_EXT_MASK; ++ bcm_perf_writel(val, PERF_SOFTRESET_6328_REG); ++ mdelay(200); ++} ++ ++static int __init bcm63xx_register_pcie(void) ++{ ++ u32 val; ++ ++ bcm63xx_reset_pcie(); ++ ++ /* configure the PCIe bridge */ ++ val = bcm_pcie_readl(PCIE_BRIDGE_OPT1_REG); ++ val |= OPT1_RD_BE_OPT_EN; ++ val |= OPT1_RD_REPLY_BE_FIX_EN; ++ val |= OPT1_PCIE_BRIDGE_HOLE_DET_EN; ++ val |= OPT1_L1_INT_STATUS_MASK_POL; ++ bcm_pcie_writel(val, PCIE_BRIDGE_OPT1_REG); ++ ++ /* setup the interrupts */ ++ val = bcm_pcie_readl(PCIE_BRIDGE_RC_INT_MASK_REG); ++ val |= PCIE_RC_INT_A | PCIE_RC_INT_B | PCIE_RC_INT_C | PCIE_RC_INT_D; ++ bcm_pcie_writel(val, PCIE_BRIDGE_RC_INT_MASK_REG); ++ ++ val = bcm_pcie_readl(PCIE_BRIDGE_OPT2_REG); ++ /* enable credit checking and error checking */ ++ val |= OPT2_TX_CREDIT_CHK_EN; ++ val |= OPT2_UBUS_UR_DECODE_DIS; ++ ++ /* set device bus/func for the pcie device */ ++ val |= (PCIE_BUS_DEVICE << OPT2_CFG_TYPE1_BUS_NO_SHIFT); ++ val |= OPT2_CFG_TYPE1_BD_SEL; ++ bcm_pcie_writel(val, PCIE_BRIDGE_OPT2_REG); ++ ++ /* setup class code as bridge */ ++ val = bcm_pcie_readl(PCIE_IDVAL3_REG); ++ val &= ~IDVAL3_CLASS_CODE_MASK; ++ val |= (PCI_CLASS_BRIDGE_PCI << IDVAL3_SUBCLASS_SHIFT); ++ bcm_pcie_writel(val, PCIE_IDVAL3_REG); ++ ++ /* disable bar1 size */ ++ val = bcm_pcie_readl(PCIE_CONFIG2_REG); ++ val &= ~CONFIG2_BAR1_SIZE_MASK; ++ bcm_pcie_writel(val, PCIE_CONFIG2_REG); ++ ++ /* set bar0 to little endian */ ++ val = (BCM_PCIE_MEM_BASE_PA >> 20) << BASEMASK_BASE_SHIFT; ++ val |= (BCM_PCIE_MEM_BASE_PA >> 20) << BASEMASK_MASK_SHIFT; ++ val |= BASEMASK_REMAP_EN; ++ bcm_pcie_writel(val, PCIE_BRIDGE_BAR0_BASEMASK_REG); ++ ++ val = (BCM_PCIE_MEM_BASE_PA >> 20) << REBASE_ADDR_BASE_SHIFT; ++ bcm_pcie_writel(val, PCIE_BRIDGE_BAR0_REBASE_ADDR_REG); ++ ++ register_pci_controller(&bcm63xx_pcie_controller); ++ ++ return 0; ++} ++ + static int __init bcm63xx_register_pci(void) + { + unsigned int mem_size; +@@ -221,6 +331,8 @@ static int __init bcm63xx_pci_init(void) + return -ENODEV; + + switch (bcm63xx_get_cpu_id()) { ++ case BCM6328_CPU_ID: ++ return bcm63xx_register_pcie(); + case BCM6348_CPU_ID: + case BCM6358_CPU_ID: + case BCM6368_CPU_ID: +--- a/arch/mips/pci/pci-bcm63xx.h ++++ b/arch/mips/pci/pci-bcm63xx.h +@@ -13,11 +13,16 @@ + */ + #define CARDBUS_PCI_IDSEL 0x8 + ++ ++#define PCIE_BUS_BRIDGE 0 ++#define PCIE_BUS_DEVICE 1 ++ + /* + * defined in ops-bcm63xx.c + */ + extern struct pci_ops bcm63xx_pci_ops; + extern struct pci_ops bcm63xx_cb_ops; ++extern struct pci_ops bcm63xx_pcie_ops; + + /* + * defined in pci-bcm63xx.c |