diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0534-PCI-brcmstb-Add-Broadcom-STB-PCIe-host-controller-dr.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0534-PCI-brcmstb-Add-Broadcom-STB-PCIe-host-controller-dr.patch | 1187 |
1 files changed, 0 insertions, 1187 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0534-PCI-brcmstb-Add-Broadcom-STB-PCIe-host-controller-dr.patch b/target/linux/brcm2708/patches-4.19/950-0534-PCI-brcmstb-Add-Broadcom-STB-PCIe-host-controller-dr.patch deleted file mode 100644 index 536bc32fe4..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0534-PCI-brcmstb-Add-Broadcom-STB-PCIe-host-controller-dr.patch +++ /dev/null @@ -1,1187 +0,0 @@ -From f44f216d79d668049e28f696840c7761017e3406 Mon Sep 17 00:00:00 2001 -From: Phil Elwell <phil@raspberrypi.org> -Date: Tue, 19 Feb 2019 22:06:59 +0000 -Subject: [PATCH 534/703] PCI: brcmstb: Add Broadcom STB PCIe host controller - driver - -This commit adds the basic Broadcom STB PCIe controller. Missing is -the ability to process MSI and also handle dma-ranges for inbound -memory accesses. These two functionalities are added in subsequent -commits. - -The PCIe block contains an MDIO interface. This is a local interface -only accessible by the PCIe controller. It cannot be used or shared -by any other HW. As such, the small amount of code for this -controller is included in this driver as there is little upside to put -it elsewhere. - -Signed-off-by: Jim Quinlan <jim2101024@gmail.com> ---- - drivers/pci/controller/Kconfig | 9 + - drivers/pci/controller/Makefile | 2 +- - drivers/pci/controller/pcie-brcmstb.c | 1097 +++++++++++++++++++++++++ - include/soc/brcmstb/memory_api.h | 25 + - 4 files changed, 1132 insertions(+), 1 deletion(-) - create mode 100644 drivers/pci/controller/pcie-brcmstb.c - create mode 100644 include/soc/brcmstb/memory_api.h - ---- a/drivers/pci/controller/Kconfig -+++ b/drivers/pci/controller/Kconfig -@@ -278,5 +278,14 @@ config VMD - To compile this driver as a module, choose M here: the - module will be called vmd. - -+config PCIE_BRCMSTB -+ tristate "Broadcom Brcmstb PCIe platform host driver" -+ depends on ARCH_BRCMSTB || BMIPS_GENERIC -+ depends on OF -+ depends on SOC_BRCMSTB -+ default ARCH_BRCMSTB || BMIPS_GENERIC -+ help -+ Adds support for Broadcom Settop Box PCIe host controller. -+ - source "drivers/pci/controller/dwc/Kconfig" - endmenu ---- a/drivers/pci/controller/Makefile -+++ b/drivers/pci/controller/Makefile -@@ -28,11 +28,11 @@ obj-$(CONFIG_PCIE_ROCKCHIP_HOST) += pcie - obj-$(CONFIG_PCIE_MEDIATEK) += pcie-mediatek.o - obj-$(CONFIG_PCIE_MOBIVEIL) += pcie-mobiveil.o - obj-$(CONFIG_PCIE_TANGO_SMP8759) += pcie-tango.o -+obj-$(CONFIG_PCIE_BRCMSTB) += pcie-brcmstb.o - obj-$(CONFIG_VMD) += vmd.o - # pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW - obj-y += dwc/ - -- - # The following drivers are for devices that use the generic ACPI - # pci_root.c driver but don't support standard ECAM config access. - # They contain MCFG quirks to replace the generic ECAM accessors with ---- /dev/null -+++ b/drivers/pci/controller/pcie-brcmstb.c -@@ -0,0 +1,1097 @@ -+// SPDX-License-Identifier: GPL-2.0 -+/* Copyright (C) 2009 - 2017 Broadcom */ -+ -+#include <linux/clk.h> -+#include <linux/compiler.h> -+#include <linux/delay.h> -+#include <linux/init.h> -+#include <linux/interrupt.h> -+#include <linux/io.h> -+#include <linux/ioport.h> -+#include <linux/irqdomain.h> -+#include <linux/kernel.h> -+#include <linux/list.h> -+#include <linux/log2.h> -+#include <linux/module.h> -+#include <linux/of_address.h> -+#include <linux/of_irq.h> -+#include <linux/of_pci.h> -+#include <linux/of_platform.h> -+#include <linux/pci.h> -+#include <linux/printk.h> -+#include <linux/sizes.h> -+#include <linux/slab.h> -+#include <soc/brcmstb/memory_api.h> -+#include <linux/string.h> -+#include <linux/types.h> -+#include "../pci.h" -+ -+/* BRCM_PCIE_CAP_REGS - Offset for the mandatory capability config regs */ -+#define BRCM_PCIE_CAP_REGS 0x00ac -+ -+/* -+ * Broadcom Settop Box PCIe Register Offsets. The names are from -+ * the chip's RDB and we use them here so that a script can correlate -+ * this code and the RDB to prevent discrepancies. -+ */ -+#define PCIE_RC_CFG_VENDOR_VENDOR_SPECIFIC_REG1 0x0188 -+#define PCIE_RC_CFG_PRIV1_ID_VAL3 0x043c -+#define PCIE_RC_DL_MDIO_ADDR 0x1100 -+#define PCIE_RC_DL_MDIO_WR_DATA 0x1104 -+#define PCIE_RC_DL_MDIO_RD_DATA 0x1108 -+#define PCIE_MISC_MISC_CTRL 0x4008 -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_LO 0x400c -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_HI 0x4010 -+#define PCIE_MISC_RC_BAR1_CONFIG_LO 0x402c -+#define PCIE_MISC_RC_BAR2_CONFIG_LO 0x4034 -+#define PCIE_MISC_RC_BAR2_CONFIG_HI 0x4038 -+#define PCIE_MISC_RC_BAR3_CONFIG_LO 0x403c -+#define PCIE_MISC_PCIE_CTRL 0x4064 -+#define PCIE_MISC_PCIE_STATUS 0x4068 -+#define PCIE_MISC_REVISION 0x406c -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_LIMIT 0x4070 -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_HI 0x4080 -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_LIMIT_HI 0x4084 -+#define PCIE_MISC_HARD_PCIE_HARD_DEBUG 0x4204 -+#define PCIE_INTR2_CPU_BASE 0x4300 -+ -+/* -+ * Broadcom Settop Box PCIe Register Field shift and mask info. The -+ * names are from the chip's RDB and we use them here so that a script -+ * can correlate this code and the RDB to prevent discrepancies. -+ */ -+#define PCIE_RC_CFG_VENDOR_VENDOR_SPECIFIC_REG1_ENDIAN_MODE_BAR2_MASK 0xc -+#define PCIE_RC_CFG_VENDOR_VENDOR_SPECIFIC_REG1_ENDIAN_MODE_BAR2_SHIFT 0x2 -+#define PCIE_RC_CFG_PRIV1_ID_VAL3_CLASS_CODE_MASK 0xffffff -+#define PCIE_RC_CFG_PRIV1_ID_VAL3_CLASS_CODE_SHIFT 0x0 -+#define PCIE_MISC_MISC_CTRL_SCB_ACCESS_EN_MASK 0x1000 -+#define PCIE_MISC_MISC_CTRL_SCB_ACCESS_EN_SHIFT 0xc -+#define PCIE_MISC_MISC_CTRL_CFG_READ_UR_MODE_MASK 0x2000 -+#define PCIE_MISC_MISC_CTRL_CFG_READ_UR_MODE_SHIFT 0xd -+#define PCIE_MISC_MISC_CTRL_MAX_BURST_SIZE_MASK 0x300000 -+#define PCIE_MISC_MISC_CTRL_MAX_BURST_SIZE_SHIFT 0x14 -+#define PCIE_MISC_MISC_CTRL_SCB0_SIZE_MASK 0xf8000000 -+#define PCIE_MISC_MISC_CTRL_SCB0_SIZE_SHIFT 0x1b -+#define PCIE_MISC_MISC_CTRL_SCB1_SIZE_MASK 0x7c00000 -+#define PCIE_MISC_MISC_CTRL_SCB1_SIZE_SHIFT 0x16 -+#define PCIE_MISC_MISC_CTRL_SCB2_SIZE_MASK 0x1f -+#define PCIE_MISC_MISC_CTRL_SCB2_SIZE_SHIFT 0x0 -+#define PCIE_MISC_RC_BAR1_CONFIG_LO_SIZE_MASK 0x1f -+#define PCIE_MISC_RC_BAR1_CONFIG_LO_SIZE_SHIFT 0x0 -+#define PCIE_MISC_RC_BAR2_CONFIG_LO_SIZE_MASK 0x1f -+#define PCIE_MISC_RC_BAR2_CONFIG_LO_SIZE_SHIFT 0x0 -+#define PCIE_MISC_RC_BAR3_CONFIG_LO_SIZE_MASK 0x1f -+#define PCIE_MISC_RC_BAR3_CONFIG_LO_SIZE_SHIFT 0x0 -+#define PCIE_MISC_PCIE_CTRL_PCIE_PERSTB_MASK 0x4 -+#define PCIE_MISC_PCIE_CTRL_PCIE_PERSTB_SHIFT 0x2 -+#define PCIE_MISC_PCIE_CTRL_PCIE_L23_REQUEST_MASK 0x1 -+#define PCIE_MISC_PCIE_CTRL_PCIE_L23_REQUEST_SHIFT 0x0 -+#define PCIE_MISC_PCIE_STATUS_PCIE_PORT_MASK 0x80 -+#define PCIE_MISC_PCIE_STATUS_PCIE_PORT_SHIFT 0x7 -+#define PCIE_MISC_PCIE_STATUS_PCIE_DL_ACTIVE_MASK 0x20 -+#define PCIE_MISC_PCIE_STATUS_PCIE_DL_ACTIVE_SHIFT 0x5 -+#define PCIE_MISC_PCIE_STATUS_PCIE_PHYLINKUP_MASK 0x10 -+#define PCIE_MISC_PCIE_STATUS_PCIE_PHYLINKUP_SHIFT 0x4 -+#define PCIE_MISC_PCIE_STATUS_PCIE_LINK_IN_L23_MASK 0x40 -+#define PCIE_MISC_PCIE_STATUS_PCIE_LINK_IN_L23_SHIFT 0x6 -+#define PCIE_MISC_REVISION_MAJMIN_MASK 0xffff -+#define PCIE_MISC_REVISION_MAJMIN_SHIFT 0 -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_LIMIT_LIMIT_MASK 0xfff00000 -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_LIMIT_LIMIT_SHIFT 0x14 -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_LIMIT_BASE_MASK 0xfff0 -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_LIMIT_BASE_SHIFT 0x4 -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_LIMIT_NUM_MASK_BITS 0xc -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_HI_BASE_MASK 0xff -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_HI_BASE_SHIFT 0x0 -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_LIMIT_HI_LIMIT_MASK 0xff -+#define PCIE_MISC_CPU_2_PCIE_MEM_WIN0_LIMIT_HI_LIMIT_SHIFT 0x0 -+#define PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_DEBUG_ENABLE_MASK 0x2 -+#define PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_DEBUG_ENABLE_SHIFT 0x1 -+#define PCIE_MISC_HARD_PCIE_HARD_DEBUG_SERDES_IDDQ_MASK 0x08000000 -+#define PCIE_MISC_HARD_PCIE_HARD_DEBUG_SERDES_IDDQ_SHIFT 0x1b -+#define PCIE_RGR1_SW_INIT_1_PERST_MASK 0x1 -+#define PCIE_RGR1_SW_INIT_1_PERST_SHIFT 0x0 -+ -+#define BRCM_NUM_PCIE_OUT_WINS 0x4 -+#define BRCM_MAX_SCB 0x4 -+ -+#define BRCM_MSI_TARGET_ADDR_LT_4GB 0x0fffffffcULL -+#define BRCM_MSI_TARGET_ADDR_GT_4GB 0xffffffffcULL -+ -+#define BURST_SIZE_128 0 -+#define BURST_SIZE_256 1 -+#define BURST_SIZE_512 2 -+ -+/* Offsets from PCIE_INTR2_CPU_BASE */ -+#define STATUS 0x0 -+#define SET 0x4 -+#define CLR 0x8 -+#define MASK_STATUS 0xc -+#define MASK_SET 0x10 -+#define MASK_CLR 0x14 -+ -+#define PCIE_BUSNUM_SHIFT 20 -+#define PCIE_SLOT_SHIFT 15 -+#define PCIE_FUNC_SHIFT 12 -+ -+#if defined(__BIG_ENDIAN) -+#define DATA_ENDIAN 2 /* PCIe->DDR inbound traffic */ -+#define MMIO_ENDIAN 2 /* CPU->PCIe outbound traffic */ -+#else -+#define DATA_ENDIAN 0 -+#define MMIO_ENDIAN 0 -+#endif -+ -+#define MDIO_PORT0 0x0 -+#define MDIO_DATA_MASK 0x7fffffff -+#define MDIO_DATA_SHIFT 0x0 -+#define MDIO_PORT_MASK 0xf0000 -+#define MDIO_PORT_SHIFT 0x16 -+#define MDIO_REGAD_MASK 0xffff -+#define MDIO_REGAD_SHIFT 0x0 -+#define MDIO_CMD_MASK 0xfff00000 -+#define MDIO_CMD_SHIFT 0x14 -+#define MDIO_CMD_READ 0x1 -+#define MDIO_CMD_WRITE 0x0 -+#define MDIO_DATA_DONE_MASK 0x80000000 -+#define MDIO_RD_DONE(x) (((x) & MDIO_DATA_DONE_MASK) ? 1 : 0) -+#define MDIO_WT_DONE(x) (((x) & MDIO_DATA_DONE_MASK) ? 0 : 1) -+#define SSC_REGS_ADDR 0x1100 -+#define SET_ADDR_OFFSET 0x1f -+#define SSC_CNTL_OFFSET 0x2 -+#define SSC_CNTL_OVRD_EN_MASK 0x8000 -+#define SSC_CNTL_OVRD_EN_SHIFT 0xf -+#define SSC_CNTL_OVRD_VAL_MASK 0x4000 -+#define SSC_CNTL_OVRD_VAL_SHIFT 0xe -+#define SSC_STATUS_OFFSET 0x1 -+#define SSC_STATUS_SSC_MASK 0x400 -+#define SSC_STATUS_SSC_SHIFT 0xa -+#define SSC_STATUS_PLL_LOCK_MASK 0x800 -+#define SSC_STATUS_PLL_LOCK_SHIFT 0xb -+ -+#define IDX_ADDR(pcie) \ -+ ((pcie)->reg_offsets[EXT_CFG_INDEX]) -+#define DATA_ADDR(pcie) \ -+ ((pcie)->reg_offsets[EXT_CFG_DATA]) -+#define PCIE_RGR1_SW_INIT_1(pcie) \ -+ ((pcie)->reg_offsets[RGR1_SW_INIT_1]) -+ -+enum { -+ RGR1_SW_INIT_1, -+ EXT_CFG_INDEX, -+ EXT_CFG_DATA, -+}; -+ -+enum { -+ RGR1_SW_INIT_1_INIT_MASK, -+ RGR1_SW_INIT_1_INIT_SHIFT, -+ RGR1_SW_INIT_1_PERST_MASK, -+ RGR1_SW_INIT_1_PERST_SHIFT, -+}; -+ -+enum pcie_type { -+ BCM7425, -+ BCM7435, -+ GENERIC, -+ BCM7278, -+}; -+ -+struct brcm_window { -+ dma_addr_t pcie_addr; -+ phys_addr_t cpu_addr; -+ dma_addr_t size; -+}; -+ -+/* Internal PCIe Host Controller Information.*/ -+struct brcm_pcie { -+ struct device *dev; -+ void __iomem *base; -+ struct list_head resources; -+ int irq; -+ struct clk *clk; -+ struct pci_bus *root_bus; -+ struct device_node *dn; -+ int id; -+ bool suspended; -+ int num_out_wins; -+ bool ssc; -+ int gen; -+ struct brcm_window out_wins[BRCM_NUM_PCIE_OUT_WINS]; -+ unsigned int rev; -+ const int *reg_offsets; -+ const int *reg_field_info; -+ enum pcie_type type; -+}; -+ -+struct pcie_cfg_data { -+ const int *reg_field_info; -+ const int *offsets; -+ const enum pcie_type type; -+}; -+ -+static const int pcie_reg_field_info[] = { -+ [RGR1_SW_INIT_1_INIT_MASK] = 0x2, -+ [RGR1_SW_INIT_1_INIT_SHIFT] = 0x1, -+}; -+ -+static const int pcie_reg_field_info_bcm7278[] = { -+ [RGR1_SW_INIT_1_INIT_MASK] = 0x1, -+ [RGR1_SW_INIT_1_INIT_SHIFT] = 0x0, -+}; -+ -+static const int pcie_offset_bcm7425[] = { -+ [RGR1_SW_INIT_1] = 0x8010, -+ [EXT_CFG_INDEX] = 0x8300, -+ [EXT_CFG_DATA] = 0x8304, -+}; -+ -+static const struct pcie_cfg_data bcm7425_cfg = { -+ .reg_field_info = pcie_reg_field_info, -+ .offsets = pcie_offset_bcm7425, -+ .type = BCM7425, -+}; -+ -+static const int pcie_offsets[] = { -+ [RGR1_SW_INIT_1] = 0x9210, -+ [EXT_CFG_INDEX] = 0x9000, -+ [EXT_CFG_DATA] = 0x9004, -+}; -+ -+static const struct pcie_cfg_data bcm7435_cfg = { -+ .reg_field_info = pcie_reg_field_info, -+ .offsets = pcie_offsets, -+ .type = BCM7435, -+}; -+ -+static const struct pcie_cfg_data generic_cfg = { -+ .reg_field_info = pcie_reg_field_info, -+ .offsets = pcie_offsets, -+ .type = GENERIC, -+}; -+ -+static const int pcie_offset_bcm7278[] = { -+ [RGR1_SW_INIT_1] = 0xc010, -+ [EXT_CFG_INDEX] = 0x9000, -+ [EXT_CFG_DATA] = 0x9004, -+}; -+ -+static const struct pcie_cfg_data bcm7278_cfg = { -+ .reg_field_info = pcie_reg_field_info_bcm7278, -+ .offsets = pcie_offset_bcm7278, -+ .type = BCM7278, -+}; -+ -+static void __iomem *brcm_pcie_map_conf(struct pci_bus *bus, unsigned int devfn, -+ int where); -+ -+static struct pci_ops brcm_pcie_ops = { -+ .map_bus = brcm_pcie_map_conf, -+ .read = pci_generic_config_read, -+ .write = pci_generic_config_write, -+}; -+ -+#if defined(CONFIG_MIPS) -+/* Broadcom MIPs HW implicitly does the swapping if necessary */ -+#define bcm_readl(a) __raw_readl(a) -+#define bcm_writel(d, a) __raw_writel(d, a) -+#define bcm_readw(a) __raw_readw(a) -+#define bcm_writew(d, a) __raw_writew(d, a) -+#else -+#define bcm_readl(a) readl(a) -+#define bcm_writel(d, a) writel(d, a) -+#define bcm_readw(a) readw(a) -+#define bcm_writew(d, a) writew(d, a) -+#endif -+ -+/* These macros extract/insert fields to host controller's register set. */ -+#define RD_FLD(base, reg, field) \ -+ rd_fld(base + reg, reg##_##field##_MASK, reg##_##field##_SHIFT) -+#define WR_FLD(base, reg, field, val) \ -+ wr_fld(base + reg, reg##_##field##_MASK, reg##_##field##_SHIFT, val) -+#define WR_FLD_RB(base, reg, field, val) \ -+ wr_fld_rb(base + reg, reg##_##field##_MASK, reg##_##field##_SHIFT, val) -+#define WR_FLD_WITH_OFFSET(base, off, reg, field, val) \ -+ wr_fld(base + reg + off, reg##_##field##_MASK, \ -+ reg##_##field##_SHIFT, val) -+#define EXTRACT_FIELD(val, reg, field) \ -+ ((val & reg##_##field##_MASK) >> reg##_##field##_SHIFT) -+#define INSERT_FIELD(val, reg, field, field_val) \ -+ ((val & ~reg##_##field##_MASK) | \ -+ (reg##_##field##_MASK & (field_val << reg##_##field##_SHIFT))) -+ -+static phys_addr_t scb_size[BRCM_MAX_SCB]; -+static int num_memc; -+static int num_pcie; -+static DEFINE_MUTEX(brcm_pcie_lock); -+ -+static u32 rd_fld(void __iomem *p, u32 mask, int shift) -+{ -+ return (bcm_readl(p) & mask) >> shift; -+} -+ -+static void wr_fld(void __iomem *p, u32 mask, int shift, u32 val) -+{ -+ u32 reg = bcm_readl(p); -+ -+ reg = (reg & ~mask) | ((val << shift) & mask); -+ bcm_writel(reg, p); -+} -+ -+static void wr_fld_rb(void __iomem *p, u32 mask, int shift, u32 val) -+{ -+ wr_fld(p, mask, shift, val); -+ (void)bcm_readl(p); -+} -+ -+static const char *link_speed_to_str(int s) -+{ -+ switch (s) { -+ case 1: -+ return "2.5"; -+ case 2: -+ return "5.0"; -+ case 3: -+ return "8.0"; -+ default: -+ break; -+ } -+ return "???"; -+} -+ -+/* -+ * The roundup_pow_of_two() from log2.h invokes -+ * __roundup_pow_of_two(unsigned long), but we really need a -+ * such a function to take a native u64 since unsigned long -+ * is 32 bits on some configurations. So we provide this helper -+ * function below. -+ */ -+static u64 roundup_pow_of_two_64(u64 n) -+{ -+ return 1ULL << fls64(n - 1); -+} -+ -+/* -+ * This is to convert the size of the inbound "BAR" region to the -+ * non-linear values of PCIE_X_MISC_RC_BAR[123]_CONFIG_LO.SIZE -+ */ -+int encode_ibar_size(u64 size) -+{ -+ int log2_in = ilog2(size); -+ -+ if (log2_in >= 12 && log2_in <= 15) -+ /* Covers 4KB to 32KB (inclusive) */ -+ return (log2_in - 12) + 0x1c; -+ else if (log2_in >= 16 && log2_in <= 37) -+ /* Covers 64KB to 32GB, (inclusive) */ -+ return log2_in - 15; -+ /* Something is awry so disable */ -+ return 0; -+} -+ -+static u32 mdio_form_pkt(int port, int regad, int cmd) -+{ -+ u32 pkt = 0; -+ -+ pkt |= (port << MDIO_PORT_SHIFT) & MDIO_PORT_MASK; -+ pkt |= (regad << MDIO_REGAD_SHIFT) & MDIO_REGAD_MASK; -+ pkt |= (cmd << MDIO_CMD_SHIFT) & MDIO_CMD_MASK; -+ -+ return pkt; -+} -+ -+/* negative return value indicates error */ -+static int mdio_read(void __iomem *base, u8 port, u8 regad) -+{ -+ int tries; -+ u32 data; -+ -+ bcm_writel(mdio_form_pkt(port, regad, MDIO_CMD_READ), -+ base + PCIE_RC_DL_MDIO_ADDR); -+ bcm_readl(base + PCIE_RC_DL_MDIO_ADDR); -+ -+ data = bcm_readl(base + PCIE_RC_DL_MDIO_RD_DATA); -+ for (tries = 0; !MDIO_RD_DONE(data) && tries < 10; tries++) { -+ udelay(10); -+ data = bcm_readl(base + PCIE_RC_DL_MDIO_RD_DATA); -+ } -+ -+ return MDIO_RD_DONE(data) -+ ? (data & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT -+ : -EIO; -+} -+ -+/* negative return value indicates error */ -+static int mdio_write(void __iomem *base, u8 port, u8 regad, u16 wrdata) -+{ -+ int tries; -+ u32 data; -+ -+ bcm_writel(mdio_form_pkt(port, regad, MDIO_CMD_WRITE), -+ base + PCIE_RC_DL_MDIO_ADDR); -+ bcm_readl(base + PCIE_RC_DL_MDIO_ADDR); -+ bcm_writel(MDIO_DATA_DONE_MASK | wrdata, -+ base + PCIE_RC_DL_MDIO_WR_DATA); -+ -+ data = bcm_readl(base + PCIE_RC_DL_MDIO_WR_DATA); -+ for (tries = 0; !MDIO_WT_DONE(data) && tries < 10; tries++) { -+ udelay(10); -+ data = bcm_readl(base + PCIE_RC_DL_MDIO_WR_DATA); -+ } -+ -+ return MDIO_WT_DONE(data) ? 0 : -EIO; -+} -+ -+/* -+ * Configures device for Spread Spectrum Clocking (SSC) mode; a negative -+ * return value indicates error. -+ */ -+static int set_ssc(void __iomem *base) -+{ -+ int tmp; -+ u16 wrdata; -+ int pll, ssc; -+ -+ tmp = mdio_write(base, MDIO_PORT0, SET_ADDR_OFFSET, SSC_REGS_ADDR); -+ if (tmp < 0) -+ return tmp; -+ -+ tmp = mdio_read(base, MDIO_PORT0, SSC_CNTL_OFFSET); -+ if (tmp < 0) -+ return tmp; -+ -+ wrdata = INSERT_FIELD(tmp, SSC_CNTL_OVRD, EN, 1); -+ wrdata = INSERT_FIELD(wrdata, SSC_CNTL_OVRD, VAL, 1); -+ tmp = mdio_write(base, MDIO_PORT0, SSC_CNTL_OFFSET, wrdata); -+ if (tmp < 0) -+ return tmp; -+ -+ usleep_range(1000, 2000); -+ tmp = mdio_read(base, MDIO_PORT0, SSC_STATUS_OFFSET); -+ if (tmp < 0) -+ return tmp; -+ -+ ssc = EXTRACT_FIELD(tmp, SSC_STATUS, SSC); -+ pll = EXTRACT_FIELD(tmp, SSC_STATUS, PLL_LOCK); -+ -+ return (ssc && pll) ? 0 : -EIO; -+} -+ -+/* Limits operation to a specific generation (1, 2, or 3) */ -+static void set_gen(void __iomem *base, int gen) -+{ -+ u32 lnkcap = bcm_readl(base + BRCM_PCIE_CAP_REGS + PCI_EXP_LNKCAP); -+ u16 lnkctl2 = bcm_readw(base + BRCM_PCIE_CAP_REGS + PCI_EXP_LNKCTL2); -+ -+ lnkcap = (lnkcap & ~PCI_EXP_LNKCAP_SLS) | gen; -+ bcm_writel(lnkcap, base + BRCM_PCIE_CAP_REGS + PCI_EXP_LNKCAP); -+ -+ lnkctl2 = (lnkctl2 & ~0xf) | gen; -+ bcm_writew(lnkctl2, base + BRCM_PCIE_CAP_REGS + PCI_EXP_LNKCTL2); -+} -+ -+static void brcm_pcie_set_outbound_win(struct brcm_pcie *pcie, -+ unsigned int win, phys_addr_t cpu_addr, -+ dma_addr_t pcie_addr, dma_addr_t size) -+{ -+ void __iomem *base = pcie->base; -+ phys_addr_t cpu_addr_mb, limit_addr_mb; -+ u32 tmp; -+ -+ /* Set the base of the pcie_addr window */ -+ bcm_writel(lower_32_bits(pcie_addr) + MMIO_ENDIAN, -+ base + PCIE_MISC_CPU_2_PCIE_MEM_WIN0_LO + (win * 8)); -+ bcm_writel(upper_32_bits(pcie_addr), -+ base + PCIE_MISC_CPU_2_PCIE_MEM_WIN0_HI + (win * 8)); -+ -+ cpu_addr_mb = cpu_addr >> 20; -+ limit_addr_mb = (cpu_addr + size - 1) >> 20; -+ -+ /* Write the addr base low register */ -+ WR_FLD_WITH_OFFSET(base, (win * 4), -+ PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_LIMIT, -+ BASE, cpu_addr_mb); -+ /* Write the addr limit low register */ -+ WR_FLD_WITH_OFFSET(base, (win * 4), -+ PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_LIMIT, -+ LIMIT, limit_addr_mb); -+ -+ if (pcie->type != BCM7435 && pcie->type != BCM7425) { -+ /* Write the cpu addr high register */ -+ tmp = (u32)(cpu_addr_mb >> -+ PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_LIMIT_NUM_MASK_BITS); -+ WR_FLD_WITH_OFFSET(base, (win * 8), -+ PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_HI, -+ BASE, tmp); -+ /* Write the cpu limit high register */ -+ tmp = (u32)(limit_addr_mb >> -+ PCIE_MISC_CPU_2_PCIE_MEM_WIN0_BASE_LIMIT_NUM_MASK_BITS); -+ WR_FLD_WITH_OFFSET(base, (win * 8), -+ PCIE_MISC_CPU_2_PCIE_MEM_WIN0_LIMIT_HI, -+ LIMIT, tmp); -+ } -+} -+ -+/* Configuration space read/write support */ -+static int cfg_index(int busnr, int devfn, int reg) -+{ -+ return ((PCI_SLOT(devfn) & 0x1f) << PCIE_SLOT_SHIFT) -+ | ((PCI_FUNC(devfn) & 0x07) << PCIE_FUNC_SHIFT) -+ | (busnr << PCIE_BUSNUM_SHIFT) -+ | (reg & ~3); -+} -+ -+/* The controller is capable of serving in both RC and EP roles */ -+static bool brcm_pcie_rc_mode(struct brcm_pcie *pcie) -+{ -+ void __iomem *base = pcie->base; -+ u32 val = bcm_readl(base + PCIE_MISC_PCIE_STATUS); -+ -+ return !!EXTRACT_FIELD(val, PCIE_MISC_PCIE_STATUS, PCIE_PORT); -+} -+ -+static bool brcm_pcie_link_up(struct brcm_pcie *pcie) -+{ -+ void __iomem *base = pcie->base; -+ u32 val = bcm_readl(base + PCIE_MISC_PCIE_STATUS); -+ u32 dla = EXTRACT_FIELD(val, PCIE_MISC_PCIE_STATUS, PCIE_DL_ACTIVE); -+ u32 plu = EXTRACT_FIELD(val, PCIE_MISC_PCIE_STATUS, PCIE_PHYLINKUP); -+ -+ return (dla && plu) ? true : false; -+} -+ -+static void __iomem *brcm_pcie_map_conf(struct pci_bus *bus, unsigned int devfn, -+ int where) -+{ -+ struct brcm_pcie *pcie = bus->sysdata; -+ void __iomem *base = pcie->base; -+ int idx; -+ -+ /* Accesses to the RC go right to the RC registers if slot==0 */ -+ if (pci_is_root_bus(bus)) -+ return PCI_SLOT(devfn) ? NULL : base + where; -+ -+ /* For devices, write to the config space index register */ -+ idx = cfg_index(bus->number, devfn, where); -+ bcm_writel(idx, pcie->base + IDX_ADDR(pcie)); -+ return base + DATA_ADDR(pcie) + (where & 0x3); -+} -+ -+static inline void brcm_pcie_bridge_sw_init_set(struct brcm_pcie *pcie, -+ unsigned int val) -+{ -+ unsigned int shift = pcie->reg_field_info[RGR1_SW_INIT_1_INIT_SHIFT]; -+ u32 mask = pcie->reg_field_info[RGR1_SW_INIT_1_INIT_MASK]; -+ -+ wr_fld_rb(pcie->base + PCIE_RGR1_SW_INIT_1(pcie), mask, shift, val); -+} -+ -+static inline void brcm_pcie_perst_set(struct brcm_pcie *pcie, -+ unsigned int val) -+{ -+ if (pcie->type != BCM7278) -+ wr_fld_rb(pcie->base + PCIE_RGR1_SW_INIT_1(pcie), -+ PCIE_RGR1_SW_INIT_1_PERST_MASK, -+ PCIE_RGR1_SW_INIT_1_PERST_SHIFT, val); -+ else -+ /* Assert = 0, de-assert = 1 on 7278 */ -+ WR_FLD_RB(pcie->base, PCIE_MISC_PCIE_CTRL, PCIE_PERSTB, !val); -+} -+ -+static int brcm_pcie_add_controller(struct brcm_pcie *pcie) -+{ -+ int i, ret = 0; -+ -+ mutex_lock(&brcm_pcie_lock); -+ if (num_pcie > 0) { -+ num_pcie++; -+ goto done; -+ } -+ -+ /* Determine num_memc and their sizes */ -+ for (i = 0, num_memc = 0; i < BRCM_MAX_SCB; i++) { -+ u64 size = brcmstb_memory_memc_size(i); -+ -+ if (size == (u64)-1) { -+ dev_err(pcie->dev, "cannot get memc%d size\n", i); -+ ret = -EINVAL; -+ goto done; -+ } else if (size) { -+ scb_size[i] = roundup_pow_of_two_64(size); -+ num_memc++; -+ } else { -+ break; -+ } -+ } -+ if (!ret && num_memc == 0) { -+ ret = -EINVAL; -+ goto done; -+ } -+ -+ num_pcie++; -+done: -+ mutex_unlock(&brcm_pcie_lock); -+ return ret; -+} -+ -+static void brcm_pcie_remove_controller(struct brcm_pcie *pcie) -+{ -+ mutex_lock(&brcm_pcie_lock); -+ if (--num_pcie == 0) -+ num_memc = 0; -+ mutex_unlock(&brcm_pcie_lock); -+} -+ -+static int brcm_pcie_parse_request_of_pci_ranges(struct brcm_pcie *pcie) -+{ -+ struct resource_entry *win; -+ int ret; -+ -+ ret = devm_of_pci_get_host_bridge_resources(pcie->dev, 0, 0xff, -+ &pcie->resources, NULL); -+ if (ret) { -+ dev_err(pcie->dev, "failed to get host resources\n"); -+ return ret; -+ } -+ -+ resource_list_for_each_entry(win, &pcie->resources) { -+ struct resource *parent, *res = win->res; -+ dma_addr_t offset = (dma_addr_t)win->offset; -+ -+ if (resource_type(res) == IORESOURCE_IO) { -+ parent = &ioport_resource; -+ } else if (resource_type(res) == IORESOURCE_MEM) { -+ if (pcie->num_out_wins >= BRCM_NUM_PCIE_OUT_WINS) { -+ dev_err(pcie->dev, "too many outbound wins\n"); -+ return -EINVAL; -+ } -+ pcie->out_wins[pcie->num_out_wins].cpu_addr -+ = (phys_addr_t)res->start; -+ pcie->out_wins[pcie->num_out_wins].pcie_addr -+ = (dma_addr_t)(res->start -+ - (phys_addr_t)offset); -+ pcie->out_wins[pcie->num_out_wins].size -+ = (dma_addr_t)(res->end - res->start + 1); -+ pcie->num_out_wins++; -+ parent = &iomem_resource; -+ } else { -+ continue; -+ } -+ -+ ret = devm_request_resource(pcie->dev, parent, res); -+ if (ret) { -+ dev_err(pcie->dev, "failed to get res %pR\n", res); -+ return ret; -+ } -+ } -+ return 0; -+} -+ -+static int brcm_pcie_setup(struct brcm_pcie *pcie) -+{ -+ void __iomem *base = pcie->base; -+ unsigned int scb_size_val; -+ u64 rc_bar2_offset, rc_bar2_size, total_mem_size = 0; -+ u32 tmp, burst; -+ int i, j, ret, limit; -+ u16 nlw, cls, lnksta; -+ bool ssc_good = false; -+ struct device *dev = pcie->dev; -+ -+ /* Reset the bridge */ -+ brcm_pcie_bridge_sw_init_set(pcie, 1); -+ -+ /* -+ * Ensure that the fundamental reset is asserted, except for 7278, -+ * which fails if we do this. -+ */ -+ if (pcie->type != BCM7278) -+ brcm_pcie_perst_set(pcie, 1); -+ -+ usleep_range(100, 200); -+ -+ /* Take the bridge out of reset */ -+ brcm_pcie_bridge_sw_init_set(pcie, 0); -+ -+ WR_FLD_RB(base, PCIE_MISC_HARD_PCIE_HARD_DEBUG, SERDES_IDDQ, 0); -+ /* Wait for SerDes to be stable */ -+ usleep_range(100, 200); -+ -+ /* Grab the PCIe hw revision number */ -+ tmp = bcm_readl(base + PCIE_MISC_REVISION); -+ pcie->rev = EXTRACT_FIELD(tmp, PCIE_MISC_REVISION, MAJMIN); -+ -+ /* Set SCB_MAX_BURST_SIZE, CFG_READ_UR_MODE, SCB_ACCESS_EN */ -+ tmp = INSERT_FIELD(0, PCIE_MISC_MISC_CTRL, SCB_ACCESS_EN, 1); -+ tmp = INSERT_FIELD(tmp, PCIE_MISC_MISC_CTRL, CFG_READ_UR_MODE, 1); -+ burst = (pcie->type == GENERIC || pcie->type == BCM7278) -+ ? BURST_SIZE_512 : BURST_SIZE_256; -+ tmp = INSERT_FIELD(tmp, PCIE_MISC_MISC_CTRL, MAX_BURST_SIZE, burst); -+ bcm_writel(tmp, base + PCIE_MISC_MISC_CTRL); -+ -+ /* -+ * Set up inbound memory view for the EP (called RC_BAR2, -+ * not to be confused with the BARs that are advertised by -+ * the EP). -+ */ -+ for (i = 0; i < num_memc; i++) -+ total_mem_size += scb_size[i]; -+ -+ /* -+ * The PCIe host controller by design must set the inbound -+ * viewport to be a contiguous arrangement of all of the -+ * system's memory. In addition, its size mut be a power of -+ * two. To further complicate matters, the viewport must -+ * start on a pcie-address that is aligned on a multiple of its -+ * size. If a portion of the viewport does not represent -+ * system memory -- e.g. 3GB of memory requires a 4GB viewport -+ * -- we can map the outbound memory in or after 3GB and even -+ * though the viewport will overlap the outbound memory the -+ * controller will know to send outbound memory downstream and -+ * everything else upstream. -+ */ -+ rc_bar2_size = roundup_pow_of_two_64(total_mem_size); -+ -+ /* -+ * Set simple configuration based on memory sizes -+ * only. We always start the viewport at address 0. -+ */ -+ rc_bar2_offset = 0; -+ -+ tmp = lower_32_bits(rc_bar2_offset); -+ tmp = INSERT_FIELD(tmp, PCIE_MISC_RC_BAR2_CONFIG_LO, SIZE, -+ encode_ibar_size(rc_bar2_size)); -+ bcm_writel(tmp, base + PCIE_MISC_RC_BAR2_CONFIG_LO); -+ bcm_writel(upper_32_bits(rc_bar2_offset), -+ base + PCIE_MISC_RC_BAR2_CONFIG_HI); -+ -+ scb_size_val = scb_size[0] -+ ? ilog2(scb_size[0]) - 15 : 0xf; /* 0xf is 1GB */ -+ WR_FLD(base, PCIE_MISC_MISC_CTRL, SCB0_SIZE, scb_size_val); -+ -+ if (num_memc > 1) { -+ scb_size_val = scb_size[1] -+ ? ilog2(scb_size[1]) - 15 : 0xf; /* 0xf is 1GB */ -+ WR_FLD(base, PCIE_MISC_MISC_CTRL, SCB1_SIZE, scb_size_val); -+ } -+ -+ if (num_memc > 2) { -+ scb_size_val = scb_size[2] -+ ? ilog2(scb_size[2]) - 15 : 0xf; /* 0xf is 1GB */ -+ WR_FLD(base, PCIE_MISC_MISC_CTRL, SCB2_SIZE, scb_size_val); -+ } -+ -+ /* disable the PCIe->GISB memory window (RC_BAR1) */ -+ WR_FLD(base, PCIE_MISC_RC_BAR1_CONFIG_LO, SIZE, 0); -+ -+ /* disable the PCIe->SCB memory window (RC_BAR3) */ -+ WR_FLD(base, PCIE_MISC_RC_BAR3_CONFIG_LO, SIZE, 0); -+ -+ if (!pcie->suspended) { -+ /* clear any interrupts we find on boot */ -+ bcm_writel(0xffffffff, base + PCIE_INTR2_CPU_BASE + CLR); -+ (void)bcm_readl(base + PCIE_INTR2_CPU_BASE + CLR); -+ } -+ -+ /* Mask all interrupts since we are not handling any yet */ -+ bcm_writel(0xffffffff, base + PCIE_INTR2_CPU_BASE + MASK_SET); -+ (void)bcm_readl(base + PCIE_INTR2_CPU_BASE + MASK_SET); -+ -+ if (pcie->gen) -+ set_gen(base, pcie->gen); -+ -+ /* Unassert the fundamental reset */ -+ brcm_pcie_perst_set(pcie, 0); -+ -+ /* -+ * Give the RC/EP time to wake up, before trying to configure RC. -+ * Intermittently check status for link-up, up to a total of 100ms -+ * when we don't know if the device is there, and up to 1000ms if -+ * we do know the device is there. -+ */ -+ limit = pcie->suspended ? 1000 : 100; -+ for (i = 1, j = 0; j < limit && !brcm_pcie_link_up(pcie); -+ j += i, i = i * 2) -+ msleep(i + j > limit ? limit - j : i); -+ -+ if (!brcm_pcie_link_up(pcie)) { -+ dev_info(dev, "link down\n"); -+ return -ENODEV; -+ } -+ -+ if (!brcm_pcie_rc_mode(pcie)) { -+ dev_err(dev, "PCIe misconfigured; is in EP mode\n"); -+ return -EINVAL; -+ } -+ -+ for (i = 0; i < pcie->num_out_wins; i++) -+ brcm_pcie_set_outbound_win(pcie, i, pcie->out_wins[i].cpu_addr, -+ pcie->out_wins[i].pcie_addr, -+ pcie->out_wins[i].size); -+ -+ /* -+ * For config space accesses on the RC, show the right class for -+ * a PCIe-PCIe bridge (the default setting is to be EP mode). -+ */ -+ WR_FLD_RB(base, PCIE_RC_CFG_PRIV1_ID_VAL3, CLASS_CODE, 0x060400); -+ -+ if (pcie->ssc) { -+ ret = set_ssc(base); -+ if (ret == 0) -+ ssc_good = true; -+ else -+ dev_err(dev, "failed attempt to enter ssc mode\n"); -+ } -+ -+ lnksta = bcm_readw(base + BRCM_PCIE_CAP_REGS + PCI_EXP_LNKSTA); -+ cls = lnksta & PCI_EXP_LNKSTA_CLS; -+ nlw = (lnksta & PCI_EXP_LNKSTA_NLW) >> PCI_EXP_LNKSTA_NLW_SHIFT; -+ dev_info(dev, "link up, %s Gbps x%u %s\n", link_speed_to_str(cls), -+ nlw, ssc_good ? "(SSC)" : "(!SSC)"); -+ -+ /* PCIe->SCB endian mode for BAR */ -+ /* field ENDIAN_MODE_BAR2 = DATA_ENDIAN */ -+ WR_FLD_RB(base, PCIE_RC_CFG_VENDOR_VENDOR_SPECIFIC_REG1, -+ ENDIAN_MODE_BAR2, DATA_ENDIAN); -+ -+ /* -+ * Refclk from RC should be gated with CLKREQ# input when ASPM L0s,L1 -+ * is enabled => setting the CLKREQ_DEBUG_ENABLE field to 1. -+ */ -+ WR_FLD_RB(base, PCIE_MISC_HARD_PCIE_HARD_DEBUG, CLKREQ_DEBUG_ENABLE, 1); -+ -+ return 0; -+} -+ -+/* L23 is a low-power PCIe link state */ -+static void enter_l23(struct brcm_pcie *pcie) -+{ -+ void __iomem *base = pcie->base; -+ int tries, l23; -+ -+ /* assert request for L23 */ -+ WR_FLD_RB(base, PCIE_MISC_PCIE_CTRL, PCIE_L23_REQUEST, 1); -+ /* poll L23 status */ -+ for (tries = 0, l23 = 0; tries < 1000 && !l23; tries++) -+ l23 = RD_FLD(base, PCIE_MISC_PCIE_STATUS, PCIE_LINK_IN_L23); -+ if (!l23) -+ dev_err(pcie->dev, "failed to enter L23\n"); -+} -+ -+static void turn_off(struct brcm_pcie *pcie) -+{ -+ void __iomem *base = pcie->base; -+ -+ if (brcm_pcie_link_up(pcie)) -+ enter_l23(pcie); -+ /* Assert fundamental reset */ -+ brcm_pcie_perst_set(pcie, 1); -+ /* Deassert request for L23 in case it was asserted */ -+ WR_FLD_RB(base, PCIE_MISC_PCIE_CTRL, PCIE_L23_REQUEST, 0); -+ /* Turn off SerDes */ -+ WR_FLD_RB(base, PCIE_MISC_HARD_PCIE_HARD_DEBUG, SERDES_IDDQ, 1); -+ /* Shutdown PCIe bridge */ -+ brcm_pcie_bridge_sw_init_set(pcie, 1); -+} -+ -+static int brcm_pcie_suspend(struct device *dev) -+{ -+ struct brcm_pcie *pcie = dev_get_drvdata(dev); -+ -+ turn_off(pcie); -+ clk_disable_unprepare(pcie->clk); -+ pcie->suspended = true; -+ -+ return 0; -+} -+ -+static int brcm_pcie_resume(struct device *dev) -+{ -+ struct brcm_pcie *pcie = dev_get_drvdata(dev); -+ void __iomem *base; -+ int ret; -+ -+ base = pcie->base; -+ clk_prepare_enable(pcie->clk); -+ -+ /* Take bridge out of reset so we can access the SerDes reg */ -+ brcm_pcie_bridge_sw_init_set(pcie, 0); -+ -+ /* Turn on SerDes */ -+ WR_FLD_RB(base, PCIE_MISC_HARD_PCIE_HARD_DEBUG, SERDES_IDDQ, 0); -+ /* Wait for SerDes to be stable */ -+ usleep_range(100, 200); -+ -+ ret = brcm_pcie_setup(pcie); -+ if (ret) -+ return ret; -+ -+ pcie->suspended = false; -+ -+ return 0; -+} -+ -+static void _brcm_pcie_remove(struct brcm_pcie *pcie) -+{ -+ turn_off(pcie); -+ clk_disable_unprepare(pcie->clk); -+ clk_put(pcie->clk); -+ brcm_pcie_remove_controller(pcie); -+} -+ -+static int brcm_pcie_remove(struct platform_device *pdev) -+{ -+ struct brcm_pcie *pcie = platform_get_drvdata(pdev); -+ -+ pci_stop_root_bus(pcie->root_bus); -+ pci_remove_root_bus(pcie->root_bus); -+ _brcm_pcie_remove(pcie); -+ -+ return 0; -+} -+ -+static const struct of_device_id brcm_pcie_match[] = { -+ { .compatible = "brcm,bcm7425-pcie", .data = &bcm7425_cfg }, -+ { .compatible = "brcm,bcm7435-pcie", .data = &bcm7435_cfg }, -+ { .compatible = "brcm,bcm7278-pcie", .data = &bcm7278_cfg }, -+ { .compatible = "brcm,bcm7445-pcie", .data = &generic_cfg }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, brcm_pcie_match); -+ -+static int brcm_pcie_probe(struct platform_device *pdev) -+{ -+ struct device_node *dn = pdev->dev.of_node; -+ const struct of_device_id *of_id; -+ const struct pcie_cfg_data *data; -+ int ret; -+ struct brcm_pcie *pcie; -+ struct resource *res; -+ void __iomem *base; -+ u32 tmp; -+ struct pci_host_bridge *bridge; -+ struct pci_bus *child; -+ -+ bridge = devm_pci_alloc_host_bridge(&pdev->dev, sizeof(*pcie)); -+ if (!bridge) -+ return -ENOMEM; -+ -+ pcie = pci_host_bridge_priv(bridge); -+ INIT_LIST_HEAD(&pcie->resources); -+ -+ of_id = of_match_node(brcm_pcie_match, dn); -+ if (!of_id) { -+ dev_err(&pdev->dev, "failed to look up compatible string\n"); -+ return -EINVAL; -+ } -+ -+ if (of_property_read_u32(dn, "dma-ranges", &tmp) == 0) { -+ dev_err(&pdev->dev, "cannot yet handle dma-ranges\n"); -+ return -EINVAL; -+ } -+ -+ data = of_id->data; -+ pcie->reg_offsets = data->offsets; -+ pcie->reg_field_info = data->reg_field_info; -+ pcie->type = data->type; -+ pcie->dn = dn; -+ pcie->dev = &pdev->dev; -+ -+ /* We use the domain number as our controller number */ -+ pcie->id = of_get_pci_domain_nr(dn); -+ if (pcie->id < 0) -+ return pcie->id; -+ -+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ if (!res) -+ return -EINVAL; -+ -+ base = devm_ioremap_resource(&pdev->dev, res); -+ if (IS_ERR(base)) -+ return PTR_ERR(base); -+ -+ pcie->clk = of_clk_get_by_name(dn, "sw_pcie"); -+ if (IS_ERR(pcie->clk)) { -+ dev_err(&pdev->dev, "could not get clock\n"); -+ pcie->clk = NULL; -+ } -+ pcie->base = base; -+ -+ ret = of_pci_get_max_link_speed(dn); -+ pcie->gen = (ret < 0) ? 0 : ret; -+ -+ pcie->ssc = of_property_read_bool(dn, "brcm,enable-ssc"); -+ -+ ret = irq_of_parse_and_map(pdev->dev.of_node, 0); -+ if (ret == 0) -+ /* keep going, as we don't use this intr yet */ -+ dev_warn(pcie->dev, "cannot get PCIe interrupt\n"); -+ else -+ pcie->irq = ret; -+ -+ ret = brcm_pcie_parse_request_of_pci_ranges(pcie); -+ if (ret) -+ return ret; -+ -+ ret = clk_prepare_enable(pcie->clk); -+ if (ret) { -+ dev_err(&pdev->dev, "could not enable clock\n"); -+ return ret; -+ } -+ -+ ret = brcm_pcie_add_controller(pcie); -+ if (ret) -+ return ret; -+ -+ ret = brcm_pcie_setup(pcie); -+ if (ret) -+ goto fail; -+ -+ list_splice_init(&pcie->resources, &bridge->windows); -+ bridge->dev.parent = &pdev->dev; -+ bridge->busnr = 0; -+ bridge->ops = &brcm_pcie_ops; -+ bridge->sysdata = pcie; -+ bridge->map_irq = of_irq_parse_and_map_pci; -+ bridge->swizzle_irq = pci_common_swizzle; -+ -+ ret = pci_scan_root_bus_bridge(bridge); -+ if (ret < 0) { -+ dev_err(pcie->dev, "Scanning root bridge failed\n"); -+ goto fail; -+ } -+ -+ pci_assign_unassigned_bus_resources(bridge->bus); -+ list_for_each_entry(child, &bridge->bus->children, node) -+ pcie_bus_configure_settings(child); -+ pci_bus_add_devices(bridge->bus); -+ platform_set_drvdata(pdev, pcie); -+ pcie->root_bus = bridge->bus; -+ -+ return 0; -+ -+fail: -+ _brcm_pcie_remove(pcie); -+ return ret; -+} -+ -+static const struct dev_pm_ops brcm_pcie_pm_ops = { -+ .suspend_noirq = brcm_pcie_suspend, -+ .resume_noirq = brcm_pcie_resume, -+}; -+ -+static struct platform_driver brcm_pcie_driver = { -+ .probe = brcm_pcie_probe, -+ .remove = brcm_pcie_remove, -+ .driver = { -+ .name = "brcm-pcie", -+ .owner = THIS_MODULE, -+ .of_match_table = brcm_pcie_match, -+ .pm = &brcm_pcie_pm_ops, -+ }, -+}; -+ -+module_platform_driver(brcm_pcie_driver); -+ -+MODULE_LICENSE("GPL v2"); -+MODULE_DESCRIPTION("Broadcom STB PCIe RC driver"); -+MODULE_AUTHOR("Broadcom"); ---- /dev/null -+++ b/include/soc/brcmstb/memory_api.h -@@ -0,0 +1,25 @@ -+#ifndef __MEMORY_API_H -+#define __MEMORY_API_H -+ -+/* -+ * Bus Interface Unit control register setup, must happen early during boot, -+ * before SMP is brought up, called by machine entry point. -+ */ -+void brcmstb_biuctrl_init(void); -+ -+#ifdef CONFIG_SOC_BRCMSTB -+int brcmstb_memory_phys_addr_to_memc(phys_addr_t pa); -+u64 brcmstb_memory_memc_size(int memc); -+#else -+static inline int brcmstb_memory_phys_addr_to_memc(phys_addr_t pa) -+{ -+ return -EINVAL; -+} -+ -+static inline u64 brcmstb_memory_memc_size(int memc) -+{ -+ return -1; -+} -+#endif -+ -+#endif /* __MEMORY_API_H */ |