Lines Matching refs:pcie
143 static void rcar_pci_write_reg(struct rcar_pcie *pcie, unsigned long val, in rcar_pci_write_reg() argument
146 writel(val, pcie->base + reg); in rcar_pci_write_reg()
149 static unsigned long rcar_pci_read_reg(struct rcar_pcie *pcie, in rcar_pci_read_reg() argument
152 return readl(pcie->base + reg); in rcar_pci_read_reg()
160 static void rcar_rmw32(struct rcar_pcie *pcie, int where, u32 mask, u32 data) in rcar_rmw32() argument
163 u32 val = rcar_pci_read_reg(pcie, where & ~3); in rcar_rmw32()
167 rcar_pci_write_reg(pcie, val, where & ~3); in rcar_rmw32()
170 static u32 rcar_read_conf(struct rcar_pcie *pcie, int where) in rcar_read_conf() argument
173 u32 val = rcar_pci_read_reg(pcie, where & ~3); in rcar_read_conf()
179 static int rcar_pcie_config_access(struct rcar_pcie *pcie, in rcar_pcie_config_access() argument
210 *data = rcar_pci_read_reg(pcie, PCICONF(index)); in rcar_pcie_config_access()
214 pcie->root_bus_nr = *data & 0xff; in rcar_pcie_config_access()
216 rcar_pci_write_reg(pcie, *data, PCICONF(index)); in rcar_pcie_config_access()
222 if (pcie->root_bus_nr < 0) in rcar_pcie_config_access()
226 rcar_pci_write_reg(pcie, rcar_pci_read_reg(pcie, PCIEERRFR), PCIEERRFR); in rcar_pcie_config_access()
229 rcar_pci_write_reg(pcie, PCIE_CONF_BUS(bus->number) | in rcar_pcie_config_access()
233 if (bus->parent->number == pcie->root_bus_nr) in rcar_pcie_config_access()
234 rcar_pci_write_reg(pcie, CONFIG_SEND_ENABLE | TYPE0, PCIECCTLR); in rcar_pcie_config_access()
236 rcar_pci_write_reg(pcie, CONFIG_SEND_ENABLE | TYPE1, PCIECCTLR); in rcar_pcie_config_access()
239 if (rcar_pci_read_reg(pcie, PCIEERRFR) & UNSUPPORTED_REQUEST) in rcar_pcie_config_access()
243 if (rcar_read_conf(pcie, RCONF(PCI_STATUS)) & in rcar_pcie_config_access()
248 *data = rcar_pci_read_reg(pcie, PCIECDR); in rcar_pcie_config_access()
250 rcar_pci_write_reg(pcie, *data, PCIECDR); in rcar_pcie_config_access()
253 rcar_pci_write_reg(pcie, 0, PCIECCTLR); in rcar_pcie_config_access()
261 struct rcar_pcie *pcie = sys_to_pcie(bus->sysdata); in rcar_pcie_read_conf() local
264 ret = rcar_pcie_config_access(pcie, RCAR_PCI_ACCESS_READ, in rcar_pcie_read_conf()
286 struct rcar_pcie *pcie = sys_to_pcie(bus->sysdata); in rcar_pcie_write_conf() local
290 ret = rcar_pcie_config_access(pcie, RCAR_PCI_ACCESS_READ, in rcar_pcie_write_conf()
309 ret = rcar_pcie_config_access(pcie, RCAR_PCI_ACCESS_WRITE, in rcar_pcie_write_conf()
320 static void rcar_pcie_setup_window(int win, struct rcar_pcie *pcie) in rcar_pcie_setup_window() argument
322 struct resource *res = &pcie->res[win]; in rcar_pcie_setup_window()
329 rcar_pci_write_reg(pcie, 0x00000000, PCIEPTCTLR(win)); in rcar_pcie_setup_window()
337 rcar_pci_write_reg(pcie, mask << 7, PCIEPAMR(win)); in rcar_pcie_setup_window()
344 rcar_pci_write_reg(pcie, upper_32_bits(res_start), PCIEPAUR(win)); in rcar_pcie_setup_window()
345 rcar_pci_write_reg(pcie, lower_32_bits(res_start) & ~0x7F, in rcar_pcie_setup_window()
353 rcar_pci_write_reg(pcie, mask, PCIEPTCTLR(win)); in rcar_pcie_setup_window()
358 struct rcar_pcie *pcie = sys_to_pcie(sys); in rcar_pcie_setup() local
362 pcie->root_bus_nr = -1; in rcar_pcie_setup()
367 res = &pcie->res[i]; in rcar_pcie_setup()
371 rcar_pcie_setup_window(i, pcie); in rcar_pcie_setup()
379 pci_add_resource(&sys->resources, &pcie->busn); in rcar_pcie_setup()
390 static void rcar_pcie_enable(struct rcar_pcie *pcie) in rcar_pcie_enable() argument
392 struct platform_device *pdev = to_platform_device(pcie->dev); in rcar_pcie_enable()
395 rcar_pci.private_data = (void **)&pcie; in rcar_pcie_enable()
397 rcar_pci.msi_ctrl = &pcie->msi.chip; in rcar_pcie_enable()
403 static int phy_wait_for_ack(struct rcar_pcie *pcie) in phy_wait_for_ack() argument
408 if (rcar_pci_read_reg(pcie, H1_PCIEPHYADRR) & PHY_ACK) in phy_wait_for_ack()
414 dev_err(pcie->dev, "Access to PCIe phy timed out\n"); in phy_wait_for_ack()
419 static void phy_write_reg(struct rcar_pcie *pcie, in phy_write_reg() argument
431 rcar_pci_write_reg(pcie, data, H1_PCIEPHYDOUTR); in phy_write_reg()
432 rcar_pci_write_reg(pcie, phyaddr, H1_PCIEPHYADRR); in phy_write_reg()
435 phy_wait_for_ack(pcie); in phy_write_reg()
438 rcar_pci_write_reg(pcie, 0, H1_PCIEPHYDOUTR); in phy_write_reg()
439 rcar_pci_write_reg(pcie, 0, H1_PCIEPHYADRR); in phy_write_reg()
442 phy_wait_for_ack(pcie); in phy_write_reg()
445 static int rcar_pcie_wait_for_dl(struct rcar_pcie *pcie) in rcar_pcie_wait_for_dl() argument
450 if ((rcar_pci_read_reg(pcie, PCIETSTR) & DATA_LINK_ACTIVE)) in rcar_pcie_wait_for_dl()
459 static int rcar_pcie_hw_init(struct rcar_pcie *pcie) in rcar_pcie_hw_init() argument
464 rcar_pci_write_reg(pcie, 0, PCIETCTLR); in rcar_pcie_hw_init()
467 rcar_pci_write_reg(pcie, 1, PCIEMSR); in rcar_pcie_hw_init()
474 rcar_pci_write_reg(pcie, PCI_CLASS_BRIDGE_PCI << 16, IDSETR1); in rcar_pcie_hw_init()
480 rcar_rmw32(pcie, RCONF(PCI_SECONDARY_BUS), 0xff, 1); in rcar_pcie_hw_init()
481 rcar_rmw32(pcie, RCONF(PCI_SUBORDINATE_BUS), 0xff, 1); in rcar_pcie_hw_init()
484 rcar_rmw32(pcie, REXPCAP(0), 0xff, PCI_CAP_ID_EXP); in rcar_pcie_hw_init()
485 rcar_rmw32(pcie, REXPCAP(PCI_EXP_FLAGS), in rcar_pcie_hw_init()
487 rcar_rmw32(pcie, RCONF(PCI_HEADER_TYPE), 0x7f, in rcar_pcie_hw_init()
491 rcar_rmw32(pcie, REXPCAP(PCI_EXP_LNKCAP), PCI_EXP_LNKCAP_DLLLARC, in rcar_pcie_hw_init()
495 rcar_rmw32(pcie, REXPCAP(PCI_EXP_SLTCAP), PCI_EXP_SLTCAP_PSN, 0); in rcar_pcie_hw_init()
498 rcar_rmw32(pcie, TLCTLR + 1, 0x3f, 50); in rcar_pcie_hw_init()
501 rcar_rmw32(pcie, RVCCAP(0), 0xfff00000, 0); in rcar_pcie_hw_init()
505 rcar_pci_write_reg(pcie, 0x801f0000, PCIEMSITXR); in rcar_pcie_hw_init()
508 rcar_pci_write_reg(pcie, CFINIT, PCIETCTLR); in rcar_pcie_hw_init()
511 err = rcar_pcie_wait_for_dl(pcie); in rcar_pcie_hw_init()
516 rcar_rmw32(pcie, PCIEINTXR, 0, 0xF << 8); in rcar_pcie_hw_init()
523 static int rcar_pcie_hw_init_h1(struct rcar_pcie *pcie) in rcar_pcie_hw_init_h1() argument
528 phy_write_reg(pcie, 0, 0x42, 0x1, 0x0EC34191); in rcar_pcie_hw_init_h1()
529 phy_write_reg(pcie, 1, 0x42, 0x1, 0x0EC34180); in rcar_pcie_hw_init_h1()
530 phy_write_reg(pcie, 0, 0x43, 0x1, 0x00210188); in rcar_pcie_hw_init_h1()
531 phy_write_reg(pcie, 1, 0x43, 0x1, 0x00210188); in rcar_pcie_hw_init_h1()
532 phy_write_reg(pcie, 0, 0x44, 0x1, 0x015C0014); in rcar_pcie_hw_init_h1()
533 phy_write_reg(pcie, 1, 0x44, 0x1, 0x015C0014); in rcar_pcie_hw_init_h1()
534 phy_write_reg(pcie, 1, 0x4C, 0x1, 0x786174A0); in rcar_pcie_hw_init_h1()
535 phy_write_reg(pcie, 1, 0x4D, 0x1, 0x048000BB); in rcar_pcie_hw_init_h1()
536 phy_write_reg(pcie, 0, 0x51, 0x1, 0x079EC062); in rcar_pcie_hw_init_h1()
537 phy_write_reg(pcie, 0, 0x52, 0x1, 0x20000000); in rcar_pcie_hw_init_h1()
538 phy_write_reg(pcie, 1, 0x52, 0x1, 0x20000000); in rcar_pcie_hw_init_h1()
539 phy_write_reg(pcie, 1, 0x56, 0x1, 0x00003806); in rcar_pcie_hw_init_h1()
541 phy_write_reg(pcie, 0, 0x60, 0x1, 0x004B03A5); in rcar_pcie_hw_init_h1()
542 phy_write_reg(pcie, 0, 0x64, 0x1, 0x3F0F1F0F); in rcar_pcie_hw_init_h1()
543 phy_write_reg(pcie, 0, 0x66, 0x1, 0x00008000); in rcar_pcie_hw_init_h1()
546 if (rcar_pci_read_reg(pcie, H1_PCIEPHYSR)) in rcar_pcie_hw_init_h1()
547 return rcar_pcie_hw_init(pcie); in rcar_pcie_hw_init_h1()
581 struct rcar_pcie *pcie = data; in rcar_pcie_msi_irq() local
582 struct rcar_msi *msi = &pcie->msi; in rcar_pcie_msi_irq()
585 reg = rcar_pci_read_reg(pcie, PCIEMSIFR); in rcar_pcie_msi_irq()
596 rcar_pci_write_reg(pcie, 1 << index, PCIEMSIFR); in rcar_pcie_msi_irq()
603 dev_info(pcie->dev, "unhandled MSI\n"); in rcar_pcie_msi_irq()
606 dev_dbg(pcie->dev, "unexpected MSI\n"); in rcar_pcie_msi_irq()
610 reg = rcar_pci_read_reg(pcie, PCIEMSIFR); in rcar_pcie_msi_irq()
620 struct rcar_pcie *pcie = container_of(chip, struct rcar_pcie, msi.chip); in rcar_msi_setup_irq() local
637 msg.address_lo = rcar_pci_read_reg(pcie, PCIEMSIALR) & ~MSIFE; in rcar_msi_setup_irq()
638 msg.address_hi = rcar_pci_read_reg(pcie, PCIEMSIAUR); in rcar_msi_setup_irq()
676 static int rcar_pcie_enable_msi(struct rcar_pcie *pcie) in rcar_pcie_enable_msi() argument
678 struct platform_device *pdev = to_platform_device(pcie->dev); in rcar_pcie_enable_msi()
679 struct rcar_msi *msi = &pcie->msi; in rcar_pcie_enable_msi()
685 msi->chip.dev = pcie->dev; in rcar_pcie_enable_msi()
689 msi->domain = irq_domain_add_linear(pcie->dev->of_node, INT_PCI_MSI_NR, in rcar_pcie_enable_msi()
699 rcar_msi_irq_chip.name, pcie); in rcar_pcie_enable_msi()
707 rcar_msi_irq_chip.name, pcie); in rcar_pcie_enable_msi()
717 rcar_pci_write_reg(pcie, base | MSIFE, PCIEMSIALR); in rcar_pcie_enable_msi()
718 rcar_pci_write_reg(pcie, 0, PCIEMSIAUR); in rcar_pcie_enable_msi()
721 rcar_pci_write_reg(pcie, 0xffffffff, PCIEMSIIER); in rcar_pcie_enable_msi()
731 struct rcar_pcie *pcie) in rcar_pcie_get_resources() argument
740 pcie->clk = devm_clk_get(&pdev->dev, "pcie"); in rcar_pcie_get_resources()
741 if (IS_ERR(pcie->clk)) { in rcar_pcie_get_resources()
742 dev_err(pcie->dev, "cannot get platform clock\n"); in rcar_pcie_get_resources()
743 return PTR_ERR(pcie->clk); in rcar_pcie_get_resources()
745 err = clk_prepare_enable(pcie->clk); in rcar_pcie_get_resources()
749 pcie->bus_clk = devm_clk_get(&pdev->dev, "pcie_bus"); in rcar_pcie_get_resources()
750 if (IS_ERR(pcie->bus_clk)) { in rcar_pcie_get_resources()
751 dev_err(pcie->dev, "cannot get pcie bus clock\n"); in rcar_pcie_get_resources()
752 err = PTR_ERR(pcie->bus_clk); in rcar_pcie_get_resources()
755 err = clk_prepare_enable(pcie->bus_clk); in rcar_pcie_get_resources()
761 dev_err(pcie->dev, "cannot get platform resources for msi interrupt\n"); in rcar_pcie_get_resources()
765 pcie->msi.irq1 = i; in rcar_pcie_get_resources()
769 dev_err(pcie->dev, "cannot get platform resources for msi interrupt\n"); in rcar_pcie_get_resources()
773 pcie->msi.irq2 = i; in rcar_pcie_get_resources()
775 pcie->base = devm_ioremap_resource(&pdev->dev, &res); in rcar_pcie_get_resources()
776 if (IS_ERR(pcie->base)) { in rcar_pcie_get_resources()
777 err = PTR_ERR(pcie->base); in rcar_pcie_get_resources()
784 clk_disable_unprepare(pcie->bus_clk); in rcar_pcie_get_resources()
786 clk_disable_unprepare(pcie->clk); in rcar_pcie_get_resources()
791 static int rcar_pcie_inbound_ranges(struct rcar_pcie *pcie, in rcar_pcie_inbound_ranges() argument
830 rcar_pci_write_reg(pcie, lower_32_bits(pci_addr), PCIEPRAR(idx)); in rcar_pcie_inbound_ranges()
831 rcar_pci_write_reg(pcie, lower_32_bits(cpu_addr), PCIELAR(idx)); in rcar_pcie_inbound_ranges()
832 rcar_pci_write_reg(pcie, lower_32_bits(mask) | flags, PCIELAMR(idx)); in rcar_pcie_inbound_ranges()
834 rcar_pci_write_reg(pcie, upper_32_bits(pci_addr), PCIEPRAR(idx+1)); in rcar_pcie_inbound_ranges()
835 rcar_pci_write_reg(pcie, upper_32_bits(cpu_addr), PCIELAR(idx+1)); in rcar_pcie_inbound_ranges()
836 rcar_pci_write_reg(pcie, 0, PCIELAMR(idx + 1)); in rcar_pcie_inbound_ranges()
843 dev_err(pcie->dev, "Failed to map inbound regions!\n"); in rcar_pcie_inbound_ranges()
870 static int rcar_pcie_parse_map_dma_ranges(struct rcar_pcie *pcie, in rcar_pcie_parse_map_dma_ranges() argument
884 dev_dbg(pcie->dev, "0x%08x 0x%016llx..0x%016llx -> 0x%016llx\n", in rcar_pcie_parse_map_dma_ranges()
887 err = rcar_pcie_inbound_ranges(pcie, &range, &index); in rcar_pcie_parse_map_dma_ranges()
905 struct rcar_pcie *pcie; in rcar_pcie_probe() local
913 pcie = devm_kzalloc(&pdev->dev, sizeof(*pcie), GFP_KERNEL); in rcar_pcie_probe()
914 if (!pcie) in rcar_pcie_probe()
917 pcie->dev = &pdev->dev; in rcar_pcie_probe()
918 platform_set_drvdata(pdev, pcie); in rcar_pcie_probe()
921 if (of_pci_parse_bus_range(pdev->dev.of_node, &pcie->busn)) { in rcar_pcie_probe()
931 err = rcar_pcie_get_resources(pdev, pcie); in rcar_pcie_probe()
939 &pcie->res[win++]); in rcar_pcie_probe()
947 err = rcar_pcie_parse_map_dma_ranges(pcie, pdev->dev.of_node); in rcar_pcie_probe()
952 err = rcar_pcie_enable_msi(pcie); in rcar_pcie_probe()
961 of_id = of_match_device(rcar_pcie_of_match, pcie->dev); in rcar_pcie_probe()
967 err = hw_init_fn(pcie); in rcar_pcie_probe()
973 data = rcar_pci_read_reg(pcie, MACSR); in rcar_pcie_probe()
976 rcar_pcie_enable(pcie); in rcar_pcie_probe()