diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/bcm63xx/Kconfig | 1 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h | 9 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h | 6 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h | 54 | ||||
| -rw-r--r-- | arch/mips/pci/ops-bcm63xx.c | 61 | ||||
| -rw-r--r-- | arch/mips/pci/pci-bcm63xx.c | 112 | ||||
| -rw-r--r-- | arch/mips/pci/pci-bcm63xx.h | 5 |
7 files changed, 248 insertions, 0 deletions
diff --git a/arch/mips/bcm63xx/Kconfig b/arch/mips/bcm63xx/Kconfig index 09e93ca..d03e879 100644 --- 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" diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h index b842b6d..e104ddb 100644 --- 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_base; __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_base; [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, \ diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h index 6dcd8b2..9203d90 100644 --- 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)) diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h index 4fc2ab2..4ccc2a7 100644 --- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h +++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h @@ -1162,6 +1162,9 @@ /************************************************************************* * _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 @@ -1169,4 +1172,55 @@ #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_ */ diff --git a/arch/mips/pci/ops-bcm63xx.c b/arch/mips/pci/ops-bcm63xx.c index 822ae17..4a15662 100644 --- 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 *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 +}; diff --git a/arch/mips/pci/pci-bcm63xx.c b/arch/mips/pci/pci-bcm63xx.c index a2b6d55..8a48139 100644 --- 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_controller = { }; #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 val, u32 reg) 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: diff --git a/arch/mips/pci/pci-bcm63xx.h b/arch/mips/pci/pci-bcm63xx.h index a6e594e..e6736d5 100644 --- 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 |