Lines Matching +full:pcie +full:- +full:host +full:- +full:1
1 // SPDX-License-Identifier: GPL-2.0
3 * PCIe driver for Renesas R-Car SoCs
4 * Copyright (C) 2014-2020 Renesas Electronics Europe Ltd
7 * arch/sh/drivers/pci/pcie-sh7786.c
8 * arch/sh/drivers/pci/ops-sh7786.c
9 * Copyright (C) 2009 - 2011 Paul Mundt
33 #include "pcie-rcar.h"
50 /* Structure representing the PCIe interface */
52 struct rcar_pcie pcie; member
58 int (*phy_init_fn)(struct rcar_pcie_host *host);
61 static u32 rcar_read_conf(struct rcar_pcie *pcie, int where) in rcar_read_conf() argument
64 u32 val = rcar_pci_read_reg(pcie, where & ~3); in rcar_read_conf()
70 static int rcar_pcie_config_access(struct rcar_pcie_host *host, in rcar_pcie_config_access() argument
74 struct rcar_pcie *pcie = &host->pcie; in rcar_pcie_config_access() local
83 * While each channel has its own memory-mapped extended config in rcar_pcie_config_access()
86 * itself with either type 0 or type 1 accesses, and indeed, any in rcar_pcie_config_access()
91 * the same channel <-> device access works for any PCI_SLOT() in rcar_pcie_config_access()
93 * space to devfn 0 in order to enable self-enumeration. In this in rcar_pcie_config_access()
102 *data = rcar_pci_read_reg(pcie, PCICONF(index)); in rcar_pcie_config_access()
104 rcar_pci_write_reg(pcie, *data, PCICONF(index)); in rcar_pcie_config_access()
110 rcar_pci_write_reg(pcie, rcar_pci_read_reg(pcie, PCIEERRFR), PCIEERRFR); in rcar_pcie_config_access()
113 rcar_pci_write_reg(pcie, PCIE_CONF_BUS(bus->number) | in rcar_pcie_config_access()
117 if (pci_is_root_bus(bus->parent)) in rcar_pcie_config_access()
118 rcar_pci_write_reg(pcie, CONFIG_SEND_ENABLE | TYPE0, PCIECCTLR); in rcar_pcie_config_access()
120 rcar_pci_write_reg(pcie, CONFIG_SEND_ENABLE | TYPE1, PCIECCTLR); in rcar_pcie_config_access()
123 if (rcar_pci_read_reg(pcie, PCIEERRFR) & UNSUPPORTED_REQUEST) in rcar_pcie_config_access()
127 if (rcar_read_conf(pcie, RCONF(PCI_STATUS)) & in rcar_pcie_config_access()
132 *data = rcar_pci_read_reg(pcie, PCIECDR); in rcar_pcie_config_access()
134 rcar_pci_write_reg(pcie, *data, PCIECDR); in rcar_pcie_config_access()
137 rcar_pci_write_reg(pcie, 0, PCIECCTLR); in rcar_pcie_config_access()
145 struct rcar_pcie_host *host = bus->sysdata; in rcar_pcie_read_conf() local
148 ret = rcar_pcie_config_access(host, RCAR_PCI_ACCESS_READ, in rcar_pcie_read_conf()
155 if (size == 1) in rcar_pcie_read_conf()
160 dev_dbg(&bus->dev, "pcie-config-read: bus=%3d devfn=0x%04x where=0x%04x size=%d val=0x%08x\n", in rcar_pcie_read_conf()
161 bus->number, devfn, where, size, *val); in rcar_pcie_read_conf()
170 struct rcar_pcie_host *host = bus->sysdata; in rcar_pcie_write_conf() local
175 ret = rcar_pcie_config_access(host, RCAR_PCI_ACCESS_READ, in rcar_pcie_write_conf()
180 dev_dbg(&bus->dev, "pcie-config-write: bus=%3d devfn=0x%04x where=0x%04x size=%d val=0x%08x\n", in rcar_pcie_write_conf()
181 bus->number, devfn, where, size, val); in rcar_pcie_write_conf()
183 if (size == 1) { in rcar_pcie_write_conf()
194 ret = rcar_pcie_config_access(host, RCAR_PCI_ACCESS_WRITE, in rcar_pcie_write_conf()
205 static void rcar_pcie_force_speedup(struct rcar_pcie *pcie) in rcar_pcie_force_speedup() argument
207 struct device *dev = pcie->dev; in rcar_pcie_force_speedup()
211 if ((rcar_pci_read_reg(pcie, MACS2R) & LINK_SPEED) != LINK_SPEED_5_0GTS) in rcar_pcie_force_speedup()
214 if (rcar_pci_read_reg(pcie, MACCTLR) & SPEED_CHANGE) { in rcar_pcie_force_speedup()
219 macsr = rcar_pci_read_reg(pcie, MACSR); in rcar_pcie_force_speedup()
224 rcar_rmw32(pcie, EXPCAP(12), PCI_EXP_LNKSTA_CLS, in rcar_pcie_force_speedup()
228 rcar_rmw32(pcie, MACCGSPSETR, SPCNGRSN, 0); in rcar_pcie_force_speedup()
232 rcar_pci_write_reg(pcie, macsr, MACSR); in rcar_pcie_force_speedup()
235 rcar_rmw32(pcie, MACCTLR, SPEED_CHANGE, SPEED_CHANGE); in rcar_pcie_force_speedup()
237 while (timeout--) { in rcar_pcie_force_speedup()
238 macsr = rcar_pci_read_reg(pcie, MACSR); in rcar_pcie_force_speedup()
241 rcar_pci_write_reg(pcie, macsr, MACSR); in rcar_pcie_force_speedup()
249 msleep(1); in rcar_pcie_force_speedup()
259 static void rcar_pcie_hw_enable(struct rcar_pcie_host *host) in rcar_pcie_hw_enable() argument
261 struct rcar_pcie *pcie = &host->pcie; in rcar_pcie_hw_enable() local
262 struct pci_host_bridge *bridge = pci_host_bridge_from_priv(host); in rcar_pcie_hw_enable()
268 rcar_pcie_force_speedup(pcie); in rcar_pcie_hw_enable()
271 resource_list_for_each_entry(win, &bridge->windows) { in rcar_pcie_hw_enable()
272 struct resource *res = win->res; in rcar_pcie_hw_enable()
274 if (!res->flags) in rcar_pcie_hw_enable()
280 rcar_pcie_set_outbound(pcie, i, win); in rcar_pcie_hw_enable()
287 static int rcar_pcie_enable(struct rcar_pcie_host *host) in rcar_pcie_enable() argument
289 struct pci_host_bridge *bridge = pci_host_bridge_from_priv(host); in rcar_pcie_enable()
291 rcar_pcie_hw_enable(host); in rcar_pcie_enable()
295 bridge->sysdata = host; in rcar_pcie_enable()
296 bridge->ops = &rcar_pcie_ops; in rcar_pcie_enable()
298 bridge->msi = &host->msi.chip; in rcar_pcie_enable()
303 static int phy_wait_for_ack(struct rcar_pcie *pcie) in phy_wait_for_ack() argument
305 struct device *dev = pcie->dev; in phy_wait_for_ack()
308 while (timeout--) { in phy_wait_for_ack()
309 if (rcar_pci_read_reg(pcie, H1_PCIEPHYADRR) & PHY_ACK) in phy_wait_for_ack()
315 dev_err(dev, "Access to PCIe phy timed out\n"); in phy_wait_for_ack()
317 return -ETIMEDOUT; in phy_wait_for_ack()
320 static void phy_write_reg(struct rcar_pcie *pcie, in phy_write_reg() argument
327 ((rate & 1) << RATE_POS) | in phy_write_reg()
332 rcar_pci_write_reg(pcie, data, H1_PCIEPHYDOUTR); in phy_write_reg()
333 rcar_pci_write_reg(pcie, phyaddr, H1_PCIEPHYADRR); in phy_write_reg()
336 phy_wait_for_ack(pcie); in phy_write_reg()
339 rcar_pci_write_reg(pcie, 0, H1_PCIEPHYDOUTR); in phy_write_reg()
340 rcar_pci_write_reg(pcie, 0, H1_PCIEPHYADRR); in phy_write_reg()
343 phy_wait_for_ack(pcie); in phy_write_reg()
346 static int rcar_pcie_hw_init(struct rcar_pcie *pcie) in rcar_pcie_hw_init() argument
351 rcar_pci_write_reg(pcie, 0, PCIETCTLR); in rcar_pcie_hw_init()
354 rcar_pci_write_reg(pcie, 1, PCIEMSR); in rcar_pcie_hw_init()
356 err = rcar_pcie_wait_for_phyrdy(pcie); in rcar_pcie_hw_init()
361 * Initial header for port config space is type 1, set the device in rcar_pcie_hw_init()
365 rcar_pci_write_reg(pcie, PCI_CLASS_BRIDGE_PCI << 16, IDSETR1); in rcar_pcie_hw_init()
371 rcar_rmw32(pcie, RCONF(PCI_SECONDARY_BUS), 0xff, 1); in rcar_pcie_hw_init()
372 rcar_rmw32(pcie, RCONF(PCI_SUBORDINATE_BUS), 0xff, 1); in rcar_pcie_hw_init()
375 rcar_rmw32(pcie, REXPCAP(0), 0xff, PCI_CAP_ID_EXP); in rcar_pcie_hw_init()
376 rcar_rmw32(pcie, REXPCAP(PCI_EXP_FLAGS), in rcar_pcie_hw_init()
378 rcar_rmw32(pcie, RCONF(PCI_HEADER_TYPE), 0x7f, in rcar_pcie_hw_init()
382 rcar_rmw32(pcie, REXPCAP(PCI_EXP_LNKCAP), PCI_EXP_LNKCAP_DLLLARC, in rcar_pcie_hw_init()
386 rcar_rmw32(pcie, REXPCAP(PCI_EXP_SLTCAP), PCI_EXP_SLTCAP_PSN, 0); in rcar_pcie_hw_init()
389 rcar_rmw32(pcie, TLCTLR + 1, 0x3f, 50); in rcar_pcie_hw_init()
392 rcar_rmw32(pcie, RVCCAP(0), 0xfff00000, 0); in rcar_pcie_hw_init()
396 rcar_pci_write_reg(pcie, 0x801f0000, PCIEMSITXR); in rcar_pcie_hw_init()
398 rcar_pci_write_reg(pcie, MACCTLR_INIT_VAL, MACCTLR); in rcar_pcie_hw_init()
400 /* Finish initialization - establish a PCI Express link */ in rcar_pcie_hw_init()
401 rcar_pci_write_reg(pcie, CFINIT, PCIETCTLR); in rcar_pcie_hw_init()
404 err = rcar_pcie_wait_for_dl(pcie); in rcar_pcie_hw_init()
409 rcar_rmw32(pcie, PCIEINTXR, 0, 0xF << 8); in rcar_pcie_hw_init()
416 static int rcar_pcie_phy_init_h1(struct rcar_pcie_host *host) in rcar_pcie_phy_init_h1() argument
418 struct rcar_pcie *pcie = &host->pcie; in rcar_pcie_phy_init_h1() local
421 phy_write_reg(pcie, 0, 0x42, 0x1, 0x0EC34191); in rcar_pcie_phy_init_h1()
422 phy_write_reg(pcie, 1, 0x42, 0x1, 0x0EC34180); in rcar_pcie_phy_init_h1()
423 phy_write_reg(pcie, 0, 0x43, 0x1, 0x00210188); in rcar_pcie_phy_init_h1()
424 phy_write_reg(pcie, 1, 0x43, 0x1, 0x00210188); in rcar_pcie_phy_init_h1()
425 phy_write_reg(pcie, 0, 0x44, 0x1, 0x015C0014); in rcar_pcie_phy_init_h1()
426 phy_write_reg(pcie, 1, 0x44, 0x1, 0x015C0014); in rcar_pcie_phy_init_h1()
427 phy_write_reg(pcie, 1, 0x4C, 0x1, 0x786174A0); in rcar_pcie_phy_init_h1()
428 phy_write_reg(pcie, 1, 0x4D, 0x1, 0x048000BB); in rcar_pcie_phy_init_h1()
429 phy_write_reg(pcie, 0, 0x51, 0x1, 0x079EC062); in rcar_pcie_phy_init_h1()
430 phy_write_reg(pcie, 0, 0x52, 0x1, 0x20000000); in rcar_pcie_phy_init_h1()
431 phy_write_reg(pcie, 1, 0x52, 0x1, 0x20000000); in rcar_pcie_phy_init_h1()
432 phy_write_reg(pcie, 1, 0x56, 0x1, 0x00003806); in rcar_pcie_phy_init_h1()
434 phy_write_reg(pcie, 0, 0x60, 0x1, 0x004B03A5); in rcar_pcie_phy_init_h1()
435 phy_write_reg(pcie, 0, 0x64, 0x1, 0x3F0F1F0F); in rcar_pcie_phy_init_h1()
436 phy_write_reg(pcie, 0, 0x66, 0x1, 0x00008000); in rcar_pcie_phy_init_h1()
441 static int rcar_pcie_phy_init_gen2(struct rcar_pcie_host *host) in rcar_pcie_phy_init_gen2() argument
443 struct rcar_pcie *pcie = &host->pcie; in rcar_pcie_phy_init_gen2() local
446 * These settings come from the R-Car Series, 2nd Generation User's in rcar_pcie_phy_init_gen2()
447 * Manual, section 50.3.1 (2) Initialization of the physical layer. in rcar_pcie_phy_init_gen2()
449 rcar_pci_write_reg(pcie, 0x000f0030, GEN2_PCIEPHYADDR); in rcar_pcie_phy_init_gen2()
450 rcar_pci_write_reg(pcie, 0x00381203, GEN2_PCIEPHYDATA); in rcar_pcie_phy_init_gen2()
451 rcar_pci_write_reg(pcie, 0x00000001, GEN2_PCIEPHYCTRL); in rcar_pcie_phy_init_gen2()
452 rcar_pci_write_reg(pcie, 0x00000006, GEN2_PCIEPHYCTRL); in rcar_pcie_phy_init_gen2()
454 rcar_pci_write_reg(pcie, 0x000f0054, GEN2_PCIEPHYADDR); in rcar_pcie_phy_init_gen2()
456 rcar_pci_write_reg(pcie, 0x13802007, GEN2_PCIEPHYDATA); in rcar_pcie_phy_init_gen2()
457 rcar_pci_write_reg(pcie, 0x00000001, GEN2_PCIEPHYCTRL); in rcar_pcie_phy_init_gen2()
458 rcar_pci_write_reg(pcie, 0x00000006, GEN2_PCIEPHYCTRL); in rcar_pcie_phy_init_gen2()
463 static int rcar_pcie_phy_init_gen3(struct rcar_pcie_host *host) in rcar_pcie_phy_init_gen3() argument
467 err = phy_init(host->phy); in rcar_pcie_phy_init_gen3()
471 err = phy_power_on(host->phy); in rcar_pcie_phy_init_gen3()
473 phy_exit(host->phy); in rcar_pcie_phy_init_gen3()
482 mutex_lock(&chip->lock); in rcar_msi_alloc()
484 msi = find_first_zero_bit(chip->used, INT_PCI_MSI_NR); in rcar_msi_alloc()
486 set_bit(msi, chip->used); in rcar_msi_alloc()
488 msi = -ENOSPC; in rcar_msi_alloc()
490 mutex_unlock(&chip->lock); in rcar_msi_alloc()
499 mutex_lock(&chip->lock); in rcar_msi_alloc_region()
500 msi = bitmap_find_free_region(chip->used, INT_PCI_MSI_NR, in rcar_msi_alloc_region()
502 mutex_unlock(&chip->lock); in rcar_msi_alloc_region()
509 mutex_lock(&chip->lock); in rcar_msi_free()
510 clear_bit(irq, chip->used); in rcar_msi_free()
511 mutex_unlock(&chip->lock); in rcar_msi_free()
516 struct rcar_pcie_host *host = data; in rcar_pcie_msi_irq() local
517 struct rcar_pcie *pcie = &host->pcie; in rcar_pcie_msi_irq() local
518 struct rcar_msi *msi = &host->msi; in rcar_pcie_msi_irq()
519 struct device *dev = pcie->dev; in rcar_pcie_msi_irq()
522 reg = rcar_pci_read_reg(pcie, PCIEMSIFR); in rcar_pcie_msi_irq()
524 /* MSI & INTx share an interrupt - we only handle MSI here */ in rcar_pcie_msi_irq()
533 rcar_pci_write_reg(pcie, 1 << index, PCIEMSIFR); in rcar_pcie_msi_irq()
535 msi_irq = irq_find_mapping(msi->domain, index); in rcar_pcie_msi_irq()
537 if (test_bit(index, msi->used)) in rcar_pcie_msi_irq()
547 reg = rcar_pci_read_reg(pcie, PCIEMSIFR); in rcar_pcie_msi_irq()
557 struct rcar_pcie_host *host = container_of(chip, struct rcar_pcie_host, in rcar_msi_setup_irq() local
559 struct rcar_pcie *pcie = &host->pcie; in rcar_msi_setup_irq() local
568 irq = irq_find_mapping(msi->domain, hwirq); in rcar_msi_setup_irq()
571 return -EINVAL; in rcar_msi_setup_irq()
576 msg.address_lo = rcar_pci_read_reg(pcie, PCIEMSIALR) & ~MSIFE; in rcar_msi_setup_irq()
577 msg.address_hi = rcar_pci_read_reg(pcie, PCIEMSIAUR); in rcar_msi_setup_irq()
589 struct rcar_pcie_host *host = container_of(chip, struct rcar_pcie_host, in rcar_msi_setup_irqs() local
591 struct rcar_pcie *pcie = &host->pcie; in rcar_msi_setup_irqs() local
598 /* MSI-X interrupts are not supported */ in rcar_msi_setup_irqs()
600 return -EINVAL; in rcar_msi_setup_irqs()
602 WARN_ON(!list_is_singular(&pdev->dev.msi_list)); in rcar_msi_setup_irqs()
603 desc = list_entry(pdev->dev.msi_list.next, struct msi_desc, list); in rcar_msi_setup_irqs()
607 return -ENOSPC; in rcar_msi_setup_irqs()
609 irq = irq_find_mapping(msi->domain, hwirq); in rcar_msi_setup_irqs()
611 return -ENOSPC; in rcar_msi_setup_irqs()
615 * irq_create_mapping() called from rcar_pcie_probe() pre- in rcar_msi_setup_irqs()
618 * returns non-zero, then the descs are also successfully in rcar_msi_setup_irqs()
623 return -EINVAL; in rcar_msi_setup_irqs()
627 desc->nvec_used = nvec; in rcar_msi_setup_irqs()
628 desc->msi_attrib.multiple = order_base_2(nvec); in rcar_msi_setup_irqs()
630 msg.address_lo = rcar_pci_read_reg(pcie, PCIEMSIALR) & ~MSIFE; in rcar_msi_setup_irqs()
631 msg.address_hi = rcar_pci_read_reg(pcie, PCIEMSIAUR); in rcar_msi_setup_irqs()
644 rcar_msi_free(msi, d->hwirq); in rcar_msi_teardown_irq()
648 .name = "R-Car PCIe MSI",
659 irq_set_chip_data(irq, domain->host_data); in rcar_msi_map()
668 static void rcar_pcie_unmap_msi(struct rcar_pcie_host *host) in rcar_pcie_unmap_msi() argument
670 struct rcar_msi *msi = &host->msi; in rcar_pcie_unmap_msi()
674 irq = irq_find_mapping(msi->domain, i); in rcar_pcie_unmap_msi()
679 irq_domain_remove(msi->domain); in rcar_pcie_unmap_msi()
682 static void rcar_pcie_hw_enable_msi(struct rcar_pcie_host *host) in rcar_pcie_hw_enable_msi() argument
684 struct rcar_pcie *pcie = &host->pcie; in rcar_pcie_hw_enable_msi() local
685 struct rcar_msi *msi = &host->msi; in rcar_pcie_hw_enable_msi()
689 base = virt_to_phys((void *)msi->pages); in rcar_pcie_hw_enable_msi()
691 rcar_pci_write_reg(pcie, lower_32_bits(base) | MSIFE, PCIEMSIALR); in rcar_pcie_hw_enable_msi()
692 rcar_pci_write_reg(pcie, upper_32_bits(base), PCIEMSIAUR); in rcar_pcie_hw_enable_msi()
695 rcar_pci_write_reg(pcie, 0xffffffff, PCIEMSIIER); in rcar_pcie_hw_enable_msi()
698 static int rcar_pcie_enable_msi(struct rcar_pcie_host *host) in rcar_pcie_enable_msi() argument
700 struct rcar_pcie *pcie = &host->pcie; in rcar_pcie_enable_msi() local
701 struct device *dev = pcie->dev; in rcar_pcie_enable_msi()
702 struct rcar_msi *msi = &host->msi; in rcar_pcie_enable_msi()
705 mutex_init(&msi->lock); in rcar_pcie_enable_msi()
707 msi->chip.dev = dev; in rcar_pcie_enable_msi()
708 msi->chip.setup_irq = rcar_msi_setup_irq; in rcar_pcie_enable_msi()
709 msi->chip.setup_irqs = rcar_msi_setup_irqs; in rcar_pcie_enable_msi()
710 msi->chip.teardown_irq = rcar_msi_teardown_irq; in rcar_pcie_enable_msi()
712 msi->domain = irq_domain_add_linear(dev->of_node, INT_PCI_MSI_NR, in rcar_pcie_enable_msi()
713 &msi_domain_ops, &msi->chip); in rcar_pcie_enable_msi()
714 if (!msi->domain) { in rcar_pcie_enable_msi()
716 return -ENOMEM; in rcar_pcie_enable_msi()
720 irq_create_mapping(msi->domain, i); in rcar_pcie_enable_msi()
722 /* Two irqs are for MSI, but they are also used for non-MSI irqs */ in rcar_pcie_enable_msi()
723 err = devm_request_irq(dev, msi->irq1, rcar_pcie_msi_irq, in rcar_pcie_enable_msi()
725 rcar_msi_irq_chip.name, host); in rcar_pcie_enable_msi()
731 err = devm_request_irq(dev, msi->irq2, rcar_pcie_msi_irq, in rcar_pcie_enable_msi()
733 rcar_msi_irq_chip.name, host); in rcar_pcie_enable_msi()
740 msi->pages = __get_free_pages(GFP_KERNEL | GFP_DMA32, 0); in rcar_pcie_enable_msi()
741 rcar_pcie_hw_enable_msi(host); in rcar_pcie_enable_msi()
746 rcar_pcie_unmap_msi(host); in rcar_pcie_enable_msi()
750 static void rcar_pcie_teardown_msi(struct rcar_pcie_host *host) in rcar_pcie_teardown_msi() argument
752 struct rcar_pcie *pcie = &host->pcie; in rcar_pcie_teardown_msi() local
753 struct rcar_msi *msi = &host->msi; in rcar_pcie_teardown_msi()
756 rcar_pci_write_reg(pcie, 0, PCIEMSIIER); in rcar_pcie_teardown_msi()
759 rcar_pci_write_reg(pcie, 0, PCIEMSIALR); in rcar_pcie_teardown_msi()
761 free_pages(msi->pages, 0); in rcar_pcie_teardown_msi()
763 rcar_pcie_unmap_msi(host); in rcar_pcie_teardown_msi()
766 static int rcar_pcie_get_resources(struct rcar_pcie_host *host) in rcar_pcie_get_resources() argument
768 struct rcar_pcie *pcie = &host->pcie; in rcar_pcie_get_resources() local
769 struct device *dev = pcie->dev; in rcar_pcie_get_resources()
773 host->phy = devm_phy_optional_get(dev, "pcie"); in rcar_pcie_get_resources()
774 if (IS_ERR(host->phy)) in rcar_pcie_get_resources()
775 return PTR_ERR(host->phy); in rcar_pcie_get_resources()
777 err = of_address_to_resource(dev->of_node, 0, &res); in rcar_pcie_get_resources()
781 pcie->base = devm_ioremap_resource(dev, &res); in rcar_pcie_get_resources()
782 if (IS_ERR(pcie->base)) in rcar_pcie_get_resources()
783 return PTR_ERR(pcie->base); in rcar_pcie_get_resources()
785 host->bus_clk = devm_clk_get(dev, "pcie_bus"); in rcar_pcie_get_resources()
786 if (IS_ERR(host->bus_clk)) { in rcar_pcie_get_resources()
787 dev_err(dev, "cannot get pcie bus clock\n"); in rcar_pcie_get_resources()
788 return PTR_ERR(host->bus_clk); in rcar_pcie_get_resources()
791 i = irq_of_parse_and_map(dev->of_node, 0); in rcar_pcie_get_resources()
794 err = -ENOENT; in rcar_pcie_get_resources()
797 host->msi.irq1 = i; in rcar_pcie_get_resources()
799 i = irq_of_parse_and_map(dev->of_node, 1); in rcar_pcie_get_resources()
802 err = -ENOENT; in rcar_pcie_get_resources()
805 host->msi.irq2 = i; in rcar_pcie_get_resources()
810 irq_dispose_mapping(host->msi.irq1); in rcar_pcie_get_resources()
815 static int rcar_pcie_inbound_ranges(struct rcar_pcie *pcie, in rcar_pcie_inbound_ranges() argument
819 u64 restype = entry->res->flags; in rcar_pcie_inbound_ranges()
820 u64 cpu_addr = entry->res->start; in rcar_pcie_inbound_ranges()
821 u64 cpu_end = entry->res->end; in rcar_pcie_inbound_ranges()
822 u64 pci_addr = entry->res->start - entry->offset; in rcar_pcie_inbound_ranges()
825 u64 size = resource_size(entry->res); in rcar_pcie_inbound_ranges()
832 if (idx >= MAX_NR_INBOUND_MAPS - 1) { in rcar_pcie_inbound_ranges()
833 dev_err(pcie->dev, "Failed to map inbound regions!\n"); in rcar_pcie_inbound_ranges()
834 return -EINVAL; in rcar_pcie_inbound_ranges()
843 u64 alignment = 1ULL << nr_zeros; in rcar_pcie_inbound_ranges()
848 size = min(size, 1ULL << 32); in rcar_pcie_inbound_ranges()
850 mask = roundup_pow_of_two(size) - 1; in rcar_pcie_inbound_ranges()
853 rcar_pcie_set_inbound(pcie, cpu_addr, pci_addr, in rcar_pcie_inbound_ranges()
865 static int rcar_pcie_parse_map_dma_ranges(struct rcar_pcie_host *host) in rcar_pcie_parse_map_dma_ranges() argument
867 struct pci_host_bridge *bridge = pci_host_bridge_from_priv(host); in rcar_pcie_parse_map_dma_ranges()
871 resource_list_for_each_entry(entry, &bridge->dma_ranges) { in rcar_pcie_parse_map_dma_ranges()
872 err = rcar_pcie_inbound_ranges(&host->pcie, entry, &index); in rcar_pcie_parse_map_dma_ranges()
881 { .compatible = "renesas,pcie-r8a7779",
883 { .compatible = "renesas,pcie-r8a7790",
885 { .compatible = "renesas,pcie-r8a7791",
887 { .compatible = "renesas,pcie-rcar-gen2",
889 { .compatible = "renesas,pcie-r8a7795",
891 { .compatible = "renesas,pcie-rcar-gen3",
898 struct device *dev = &pdev->dev; in rcar_pcie_probe()
899 struct rcar_pcie_host *host; in rcar_pcie_probe() local
900 struct rcar_pcie *pcie; in rcar_pcie_probe() local
905 bridge = devm_pci_alloc_host_bridge(dev, sizeof(*host)); in rcar_pcie_probe()
907 return -ENOMEM; in rcar_pcie_probe()
909 host = pci_host_bridge_priv(bridge); in rcar_pcie_probe()
910 pcie = &host->pcie; in rcar_pcie_probe()
911 pcie->dev = dev; in rcar_pcie_probe()
912 platform_set_drvdata(pdev, host); in rcar_pcie_probe()
914 pm_runtime_enable(pcie->dev); in rcar_pcie_probe()
915 err = pm_runtime_get_sync(pcie->dev); in rcar_pcie_probe()
917 dev_err(pcie->dev, "pm_runtime_get_sync failed\n"); in rcar_pcie_probe()
921 err = rcar_pcie_get_resources(host); in rcar_pcie_probe()
927 err = clk_prepare_enable(host->bus_clk); in rcar_pcie_probe()
933 err = rcar_pcie_parse_map_dma_ranges(host); in rcar_pcie_probe()
937 host->phy_init_fn = of_device_get_match_data(dev); in rcar_pcie_probe()
938 err = host->phy_init_fn(host); in rcar_pcie_probe()
940 dev_err(dev, "failed to init PCIe PHY\n"); in rcar_pcie_probe()
945 if (rcar_pcie_hw_init(pcie)) { in rcar_pcie_probe()
946 dev_info(dev, "PCIe link down\n"); in rcar_pcie_probe()
947 err = -ENODEV; in rcar_pcie_probe()
951 data = rcar_pci_read_reg(pcie, MACSR); in rcar_pcie_probe()
952 dev_info(dev, "PCIe x%d: link up\n", (data >> 20) & 0x3f); in rcar_pcie_probe()
955 err = rcar_pcie_enable_msi(host); in rcar_pcie_probe()
964 err = rcar_pcie_enable(host); in rcar_pcie_probe()
972 rcar_pcie_teardown_msi(host); in rcar_pcie_probe()
975 if (host->phy) { in rcar_pcie_probe()
976 phy_power_off(host->phy); in rcar_pcie_probe()
977 phy_exit(host->phy); in rcar_pcie_probe()
981 clk_disable_unprepare(host->bus_clk); in rcar_pcie_probe()
984 irq_dispose_mapping(host->msi.irq2); in rcar_pcie_probe()
985 irq_dispose_mapping(host->msi.irq1); in rcar_pcie_probe()
996 struct rcar_pcie_host *host = dev_get_drvdata(dev); in rcar_pcie_resume() local
997 struct rcar_pcie *pcie = &host->pcie; in rcar_pcie_resume() local
1001 err = rcar_pcie_parse_map_dma_ranges(host); in rcar_pcie_resume()
1006 err = host->phy_init_fn(host); in rcar_pcie_resume()
1008 dev_info(dev, "PCIe link down\n"); in rcar_pcie_resume()
1012 data = rcar_pci_read_reg(pcie, MACSR); in rcar_pcie_resume()
1013 dev_info(dev, "PCIe x%d: link up\n", (data >> 20) & 0x3f); in rcar_pcie_resume()
1017 rcar_pcie_hw_enable_msi(host); in rcar_pcie_resume()
1019 rcar_pcie_hw_enable(host); in rcar_pcie_resume()
1026 struct rcar_pcie_host *host = dev_get_drvdata(dev); in rcar_pcie_resume_noirq() local
1027 struct rcar_pcie *pcie = &host->pcie; in rcar_pcie_resume_noirq() local
1029 if (rcar_pci_read_reg(pcie, PMSR) && in rcar_pcie_resume_noirq()
1030 !(rcar_pci_read_reg(pcie, PCIETCTLR) & DL_DOWN)) in rcar_pcie_resume_noirq()
1033 /* Re-establish the PCIe link */ in rcar_pcie_resume_noirq()
1034 rcar_pci_write_reg(pcie, MACCTLR_INIT_VAL, MACCTLR); in rcar_pcie_resume_noirq()
1035 rcar_pci_write_reg(pcie, CFINIT, PCIETCTLR); in rcar_pcie_resume_noirq()
1036 return rcar_pcie_wait_for_dl(pcie); in rcar_pcie_resume_noirq()
1046 .name = "rcar-pcie",