Lines Matching refs:pcie
181 #define IDX_ADDR(pcie) (pcie->reg_offsets[EXT_CFG_INDEX]) argument
182 #define DATA_ADDR(pcie) (pcie->reg_offsets[EXT_CFG_DATA]) argument
183 #define PCIE_RGR1_SW_INIT_1(pcie) (pcie->reg_offsets[RGR1_SW_INIT_1]) argument
221 void (*perst_set)(struct brcm_pcie *pcie, u32 val);
222 void (*bridge_sw_init_set)(struct brcm_pcie *pcie, u32 val);
265 void (*perst_set)(struct brcm_pcie *pcie, u32 val);
266 void (*bridge_sw_init_set)(struct brcm_pcie *pcie, u32 val);
271 static inline bool is_bmips(const struct brcm_pcie *pcie) in is_bmips() argument
273 return pcie->type == BCM7435 || pcie->type == BCM7425; in is_bmips()
342 static int brcm_pcie_set_ssc(struct brcm_pcie *pcie) in brcm_pcie_set_ssc() argument
348 ret = brcm_pcie_mdio_write(pcie->base, MDIO_PORT0, SET_ADDR_OFFSET, in brcm_pcie_set_ssc()
353 ret = brcm_pcie_mdio_read(pcie->base, MDIO_PORT0, in brcm_pcie_set_ssc()
360 ret = brcm_pcie_mdio_write(pcie->base, MDIO_PORT0, in brcm_pcie_set_ssc()
366 ret = brcm_pcie_mdio_read(pcie->base, MDIO_PORT0, in brcm_pcie_set_ssc()
378 static void brcm_pcie_set_gen(struct brcm_pcie *pcie, int gen) in brcm_pcie_set_gen() argument
380 u16 lnkctl2 = readw(pcie->base + BRCM_PCIE_CAP_REGS + PCI_EXP_LNKCTL2); in brcm_pcie_set_gen()
381 u32 lnkcap = readl(pcie->base + BRCM_PCIE_CAP_REGS + PCI_EXP_LNKCAP); in brcm_pcie_set_gen()
384 writel(lnkcap, pcie->base + BRCM_PCIE_CAP_REGS + PCI_EXP_LNKCAP); in brcm_pcie_set_gen()
387 writew(lnkctl2, pcie->base + BRCM_PCIE_CAP_REGS + PCI_EXP_LNKCTL2); in brcm_pcie_set_gen()
390 static void brcm_pcie_set_outbound_win(struct brcm_pcie *pcie, in brcm_pcie_set_outbound_win() argument
400 writel(lower_32_bits(pcie_addr), pcie->base + PCIE_MEM_WIN0_LO(win)); in brcm_pcie_set_outbound_win()
401 writel(upper_32_bits(pcie_addr), pcie->base + PCIE_MEM_WIN0_HI(win)); in brcm_pcie_set_outbound_win()
407 tmp = readl(pcie->base + PCIE_MEM_WIN0_BASE_LIMIT(win)); in brcm_pcie_set_outbound_win()
412 writel(tmp, pcie->base + PCIE_MEM_WIN0_BASE_LIMIT(win)); in brcm_pcie_set_outbound_win()
414 if (is_bmips(pcie)) in brcm_pcie_set_outbound_win()
422 tmp = readl(pcie->base + PCIE_MEM_WIN0_BASE_HI(win)); in brcm_pcie_set_outbound_win()
425 writel(tmp, pcie->base + PCIE_MEM_WIN0_BASE_HI(win)); in brcm_pcie_set_outbound_win()
428 tmp = readl(pcie->base + PCIE_MEM_WIN0_LIMIT_HI(win)); in brcm_pcie_set_outbound_win()
431 writel(tmp, pcie->base + PCIE_MEM_WIN0_LIMIT_HI(win)); in brcm_pcie_set_outbound_win()
585 static void brcm_msi_remove(struct brcm_pcie *pcie) in brcm_msi_remove() argument
587 struct brcm_msi *msi = pcie->msi; in brcm_msi_remove()
616 static int brcm_pcie_enable_msi(struct brcm_pcie *pcie) in brcm_pcie_enable_msi() argument
620 struct device *dev = pcie->dev; in brcm_pcie_enable_msi()
634 msi->base = pcie->base; in brcm_pcie_enable_msi()
635 msi->np = pcie->np; in brcm_pcie_enable_msi()
636 msi->target_addr = pcie->msi_target_addr; in brcm_pcie_enable_msi()
638 msi->legacy = pcie->hw_rev < BRCM_PCIE_HW_REV_33; in brcm_pcie_enable_msi()
663 pcie->msi = msi; in brcm_pcie_enable_msi()
669 static bool brcm_pcie_rc_mode(struct brcm_pcie *pcie) in brcm_pcie_rc_mode() argument
671 void __iomem *base = pcie->base; in brcm_pcie_rc_mode()
677 static bool brcm_pcie_link_up(struct brcm_pcie *pcie) in brcm_pcie_link_up() argument
679 u32 val = readl(pcie->base + PCIE_MISC_PCIE_STATUS); in brcm_pcie_link_up()
689 struct brcm_pcie *pcie = bus->sysdata; in brcm_pcie_map_bus() local
690 void __iomem *base = pcie->base; in brcm_pcie_map_bus()
698 if (!brcm_pcie_link_up(pcie)) in brcm_pcie_map_bus()
703 writel(idx, pcie->base + PCIE_EXT_CFG_INDEX); in brcm_pcie_map_bus()
710 struct brcm_pcie *pcie = bus->sysdata; in brcm7425_pcie_map_bus() local
711 void __iomem *base = pcie->base; in brcm7425_pcie_map_bus()
719 if (!brcm_pcie_link_up(pcie)) in brcm7425_pcie_map_bus()
724 writel(idx, base + IDX_ADDR(pcie)); in brcm7425_pcie_map_bus()
725 return base + DATA_ADDR(pcie); in brcm7425_pcie_map_bus()
728 static void brcm_pcie_bridge_sw_init_set_generic(struct brcm_pcie *pcie, u32 val) in brcm_pcie_bridge_sw_init_set_generic() argument
733 tmp = readl(pcie->base + PCIE_RGR1_SW_INIT_1(pcie)); in brcm_pcie_bridge_sw_init_set_generic()
735 writel(tmp, pcie->base + PCIE_RGR1_SW_INIT_1(pcie)); in brcm_pcie_bridge_sw_init_set_generic()
738 static void brcm_pcie_bridge_sw_init_set_7278(struct brcm_pcie *pcie, u32 val) in brcm_pcie_bridge_sw_init_set_7278() argument
743 tmp = readl(pcie->base + PCIE_RGR1_SW_INIT_1(pcie)); in brcm_pcie_bridge_sw_init_set_7278()
745 writel(tmp, pcie->base + PCIE_RGR1_SW_INIT_1(pcie)); in brcm_pcie_bridge_sw_init_set_7278()
748 static void brcm_pcie_perst_set_4908(struct brcm_pcie *pcie, u32 val) in brcm_pcie_perst_set_4908() argument
750 if (WARN_ONCE(!pcie->perst_reset, "missing PERST# reset controller\n")) in brcm_pcie_perst_set_4908()
754 reset_control_assert(pcie->perst_reset); in brcm_pcie_perst_set_4908()
756 reset_control_deassert(pcie->perst_reset); in brcm_pcie_perst_set_4908()
759 static void brcm_pcie_perst_set_7278(struct brcm_pcie *pcie, u32 val) in brcm_pcie_perst_set_7278() argument
764 tmp = readl(pcie->base + PCIE_MISC_PCIE_CTRL); in brcm_pcie_perst_set_7278()
766 writel(tmp, pcie->base + PCIE_MISC_PCIE_CTRL); in brcm_pcie_perst_set_7278()
769 static void brcm_pcie_perst_set_generic(struct brcm_pcie *pcie, u32 val) in brcm_pcie_perst_set_generic() argument
773 tmp = readl(pcie->base + PCIE_RGR1_SW_INIT_1(pcie)); in brcm_pcie_perst_set_generic()
775 writel(tmp, pcie->base + PCIE_RGR1_SW_INIT_1(pcie)); in brcm_pcie_perst_set_generic()
778 static int brcm_pcie_get_rc_bar2_size_and_offset(struct brcm_pcie *pcie, in brcm_pcie_get_rc_bar2_size_and_offset() argument
782 struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie); in brcm_pcie_get_rc_bar2_size_and_offset()
784 struct device *dev = pcie->dev; in brcm_pcie_get_rc_bar2_size_and_offset()
802 ret = of_property_read_variable_u64_array(pcie->np, "brcm,scb-sizes", pcie->memc_size, 1, in brcm_pcie_get_rc_bar2_size_and_offset()
807 pcie->num_memc = 1; in brcm_pcie_get_rc_bar2_size_and_offset()
808 pcie->memc_size[0] = 1ULL << fls64(size - 1); in brcm_pcie_get_rc_bar2_size_and_offset()
810 pcie->num_memc = ret; in brcm_pcie_get_rc_bar2_size_and_offset()
814 for (i = 0, size = 0; i < pcie->num_memc; i++) in brcm_pcie_get_rc_bar2_size_and_offset()
815 size += pcie->memc_size[i]; in brcm_pcie_get_rc_bar2_size_and_offset()
865 static int brcm_pcie_setup(struct brcm_pcie *pcie) in brcm_pcie_setup() argument
868 void __iomem *base = pcie->base; in brcm_pcie_setup()
876 pcie->bridge_sw_init_set(pcie, 1); in brcm_pcie_setup()
880 pcie->bridge_sw_init_set(pcie, 0); in brcm_pcie_setup()
883 if (is_bmips(pcie)) in brcm_pcie_setup()
896 if (is_bmips(pcie)) in brcm_pcie_setup()
898 else if (pcie->type == BCM2711) in brcm_pcie_setup()
900 else if (pcie->type == BCM7278) in brcm_pcie_setup()
917 ret = brcm_pcie_get_rc_bar2_size_and_offset(pcie, &rc_bar2_size, in brcm_pcie_setup()
930 for (memc = 0; memc < pcie->num_memc; memc++) { in brcm_pcie_setup()
931 u32 scb_size_val = ilog2(pcie->memc_size[memc]) - 15; in brcm_pcie_setup()
950 pcie->msi_target_addr = BRCM_MSI_TARGET_ADDR_LT_4GB; in brcm_pcie_setup()
952 pcie->msi_target_addr = BRCM_MSI_TARGET_ADDR_GT_4GB; in brcm_pcie_setup()
954 if (!brcm_pcie_rc_mode(pcie)) { in brcm_pcie_setup()
955 dev_err(pcie->dev, "PCIe RC controller misconfigured as Endpoint\n"); in brcm_pcie_setup()
971 if (!of_property_read_bool(pcie->np, "aspm-no-l0s")) in brcm_pcie_setup()
987 bridge = pci_host_bridge_from_priv(pcie); in brcm_pcie_setup()
995 dev_err(pcie->dev, "too many outbound wins\n"); in brcm_pcie_setup()
999 if (is_bmips(pcie)) { in brcm_pcie_setup()
1007 brcm_pcie_set_outbound_win(pcie, j, start, in brcm_pcie_setup()
1012 brcm_pcie_set_outbound_win(pcie, num_out_wins, res->start, in brcm_pcie_setup()
1027 static int brcm_pcie_start_link(struct brcm_pcie *pcie) in brcm_pcie_start_link() argument
1029 struct device *dev = pcie->dev; in brcm_pcie_start_link()
1030 void __iomem *base = pcie->base; in brcm_pcie_start_link()
1037 pcie->perst_set(pcie, 0); in brcm_pcie_start_link()
1050 for (i = 0; i < 100 && !brcm_pcie_link_up(pcie); i += 5) in brcm_pcie_start_link()
1053 if (!brcm_pcie_link_up(pcie)) { in brcm_pcie_start_link()
1058 if (pcie->gen) in brcm_pcie_start_link()
1059 brcm_pcie_set_gen(pcie, pcie->gen); in brcm_pcie_start_link()
1061 if (pcie->ssc) { in brcm_pcie_start_link()
1062 ret = brcm_pcie_set_ssc(pcie); in brcm_pcie_start_link()
1112 struct brcm_pcie *pcie = bus->sysdata; in brcm_pcie_add_bus() local
1127 pcie->sr = sr; in brcm_pcie_add_bus()
1139 pcie->sr = NULL; in brcm_pcie_add_bus()
1144 brcm_pcie_start_link(pcie); in brcm_pcie_add_bus()
1150 struct brcm_pcie *pcie = bus->sysdata; in brcm_pcie_remove_bus() local
1151 struct subdev_regulators *sr = pcie->sr; in brcm_pcie_remove_bus()
1160 pcie->sr = NULL; in brcm_pcie_remove_bus()
1164 static void brcm_pcie_enter_l23(struct brcm_pcie *pcie) in brcm_pcie_enter_l23() argument
1166 void __iomem *base = pcie->base; in brcm_pcie_enter_l23()
1186 dev_err(pcie->dev, "failed to enter low-power link state\n"); in brcm_pcie_enter_l23()
1189 static int brcm_phy_cntl(struct brcm_pcie *pcie, const int start) in brcm_phy_cntl() argument
1203 void __iomem *base = pcie->base; in brcm_phy_cntl()
1220 dev_err(pcie->dev, "failed to %s phy\n", (start ? "start" : "stop")); in brcm_phy_cntl()
1225 static inline int brcm_phy_start(struct brcm_pcie *pcie) in brcm_phy_start() argument
1227 return pcie->rescal ? brcm_phy_cntl(pcie, 1) : 0; in brcm_phy_start()
1230 static inline int brcm_phy_stop(struct brcm_pcie *pcie) in brcm_phy_stop() argument
1232 return pcie->rescal ? brcm_phy_cntl(pcie, 0) : 0; in brcm_phy_stop()
1235 static void brcm_pcie_turn_off(struct brcm_pcie *pcie) in brcm_pcie_turn_off() argument
1237 void __iomem *base = pcie->base; in brcm_pcie_turn_off()
1240 if (brcm_pcie_link_up(pcie)) in brcm_pcie_turn_off()
1241 brcm_pcie_enter_l23(pcie); in brcm_pcie_turn_off()
1243 pcie->perst_set(pcie, 1); in brcm_pcie_turn_off()
1256 pcie->bridge_sw_init_set(pcie, 1); in brcm_pcie_turn_off()
1272 struct brcm_pcie *pcie = dev_get_drvdata(dev); in brcm_pcie_suspend_noirq() local
1273 struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie); in brcm_pcie_suspend_noirq()
1276 brcm_pcie_turn_off(pcie); in brcm_pcie_suspend_noirq()
1282 if (brcm_phy_stop(pcie)) in brcm_pcie_suspend_noirq()
1285 ret = reset_control_rearm(pcie->rescal); in brcm_pcie_suspend_noirq()
1291 if (pcie->sr) { in brcm_pcie_suspend_noirq()
1297 pcie->ep_wakeup_capable = false; in brcm_pcie_suspend_noirq()
1299 &pcie->ep_wakeup_capable); in brcm_pcie_suspend_noirq()
1300 if (!pcie->ep_wakeup_capable) { in brcm_pcie_suspend_noirq()
1301 ret = regulator_bulk_disable(pcie->sr->num_supplies, in brcm_pcie_suspend_noirq()
1302 pcie->sr->supplies); in brcm_pcie_suspend_noirq()
1305 reset_control_reset(pcie->rescal); in brcm_pcie_suspend_noirq()
1310 clk_disable_unprepare(pcie->clk); in brcm_pcie_suspend_noirq()
1317 struct brcm_pcie *pcie = dev_get_drvdata(dev); in brcm_pcie_resume_noirq() local
1322 base = pcie->base; in brcm_pcie_resume_noirq()
1323 ret = clk_prepare_enable(pcie->clk); in brcm_pcie_resume_noirq()
1327 ret = reset_control_reset(pcie->rescal); in brcm_pcie_resume_noirq()
1331 ret = brcm_phy_start(pcie); in brcm_pcie_resume_noirq()
1336 pcie->bridge_sw_init_set(pcie, 0); in brcm_pcie_resume_noirq()
1346 ret = brcm_pcie_setup(pcie); in brcm_pcie_resume_noirq()
1350 if (pcie->sr) { in brcm_pcie_resume_noirq()
1351 if (pcie->ep_wakeup_capable) { in brcm_pcie_resume_noirq()
1358 pcie->ep_wakeup_capable = false; in brcm_pcie_resume_noirq()
1360 ret = regulator_bulk_enable(pcie->sr->num_supplies, in brcm_pcie_resume_noirq()
1361 pcie->sr->supplies); in brcm_pcie_resume_noirq()
1369 ret = brcm_pcie_start_link(pcie); in brcm_pcie_resume_noirq()
1373 if (pcie->msi) in brcm_pcie_resume_noirq()
1374 brcm_msi_set_regs(pcie->msi); in brcm_pcie_resume_noirq()
1379 if (pcie->sr) in brcm_pcie_resume_noirq()
1380 regulator_bulk_disable(pcie->sr->num_supplies, pcie->sr->supplies); in brcm_pcie_resume_noirq()
1382 reset_control_rearm(pcie->rescal); in brcm_pcie_resume_noirq()
1384 clk_disable_unprepare(pcie->clk); in brcm_pcie_resume_noirq()
1388 static void __brcm_pcie_remove(struct brcm_pcie *pcie) in __brcm_pcie_remove() argument
1390 brcm_msi_remove(pcie); in __brcm_pcie_remove()
1391 brcm_pcie_turn_off(pcie); in __brcm_pcie_remove()
1392 if (brcm_phy_stop(pcie)) in __brcm_pcie_remove()
1393 dev_err(pcie->dev, "Could not stop phy\n"); in __brcm_pcie_remove()
1394 if (reset_control_rearm(pcie->rescal)) in __brcm_pcie_remove()
1395 dev_err(pcie->dev, "Could not rearm rescal reset\n"); in __brcm_pcie_remove()
1396 clk_disable_unprepare(pcie->clk); in __brcm_pcie_remove()
1401 struct brcm_pcie *pcie = platform_get_drvdata(pdev); in brcm_pcie_remove() local
1402 struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie); in brcm_pcie_remove()
1406 __brcm_pcie_remove(pcie); in brcm_pcie_remove()
1504 struct brcm_pcie *pcie; in brcm_pcie_probe() local
1507 bridge = devm_pci_alloc_host_bridge(&pdev->dev, sizeof(*pcie)); in brcm_pcie_probe()
1517 pcie = pci_host_bridge_priv(bridge); in brcm_pcie_probe()
1518 pcie->dev = &pdev->dev; in brcm_pcie_probe()
1519 pcie->np = np; in brcm_pcie_probe()
1520 pcie->reg_offsets = data->offsets; in brcm_pcie_probe()
1521 pcie->type = data->type; in brcm_pcie_probe()
1522 pcie->perst_set = data->perst_set; in brcm_pcie_probe()
1523 pcie->bridge_sw_init_set = data->bridge_sw_init_set; in brcm_pcie_probe()
1525 pcie->base = devm_platform_ioremap_resource(pdev, 0); in brcm_pcie_probe()
1526 if (IS_ERR(pcie->base)) in brcm_pcie_probe()
1527 return PTR_ERR(pcie->base); in brcm_pcie_probe()
1529 pcie->clk = devm_clk_get_optional(&pdev->dev, "sw_pcie"); in brcm_pcie_probe()
1530 if (IS_ERR(pcie->clk)) in brcm_pcie_probe()
1531 return PTR_ERR(pcie->clk); in brcm_pcie_probe()
1534 pcie->gen = (ret < 0) ? 0 : ret; in brcm_pcie_probe()
1536 pcie->ssc = of_property_read_bool(np, "brcm,enable-ssc"); in brcm_pcie_probe()
1538 ret = clk_prepare_enable(pcie->clk); in brcm_pcie_probe()
1543 pcie->rescal = devm_reset_control_get_optional_shared(&pdev->dev, "rescal"); in brcm_pcie_probe()
1544 if (IS_ERR(pcie->rescal)) { in brcm_pcie_probe()
1545 clk_disable_unprepare(pcie->clk); in brcm_pcie_probe()
1546 return PTR_ERR(pcie->rescal); in brcm_pcie_probe()
1548 pcie->perst_reset = devm_reset_control_get_optional_exclusive(&pdev->dev, "perst"); in brcm_pcie_probe()
1549 if (IS_ERR(pcie->perst_reset)) { in brcm_pcie_probe()
1550 clk_disable_unprepare(pcie->clk); in brcm_pcie_probe()
1551 return PTR_ERR(pcie->perst_reset); in brcm_pcie_probe()
1554 ret = reset_control_reset(pcie->rescal); in brcm_pcie_probe()
1558 ret = brcm_phy_start(pcie); in brcm_pcie_probe()
1560 reset_control_rearm(pcie->rescal); in brcm_pcie_probe()
1561 clk_disable_unprepare(pcie->clk); in brcm_pcie_probe()
1565 ret = brcm_pcie_setup(pcie); in brcm_pcie_probe()
1569 pcie->hw_rev = readl(pcie->base + PCIE_MISC_REVISION); in brcm_pcie_probe()
1570 if (pcie->type == BCM4908 && pcie->hw_rev >= BRCM_PCIE_HW_REV_3_20) { in brcm_pcie_probe()
1571 dev_err(pcie->dev, "hardware revision with unsupported PERST# setup\n"); in brcm_pcie_probe()
1576 msi_np = of_parse_phandle(pcie->np, "msi-parent", 0); in brcm_pcie_probe()
1577 if (pci_msi_enabled() && msi_np == pcie->np) { in brcm_pcie_probe()
1578 ret = brcm_pcie_enable_msi(pcie); in brcm_pcie_probe()
1580 dev_err(pcie->dev, "probe of internal MSI failed"); in brcm_pcie_probe()
1585 bridge->ops = pcie->type == BCM7425 ? &brcm7425_pcie_ops : &brcm_pcie_ops; in brcm_pcie_probe()
1586 bridge->sysdata = pcie; in brcm_pcie_probe()
1588 platform_set_drvdata(pdev, pcie); in brcm_pcie_probe()
1591 if (!ret && !brcm_pcie_link_up(pcie)) in brcm_pcie_probe()
1602 __brcm_pcie_remove(pcie); in brcm_pcie_probe()