From c7c44527b364bce2858bc1c8b630371fea153b56 Mon Sep 17 00:00:00 2001 From: Ray Jui Date: Mon, 31 Oct 2016 17:38:41 -0700 Subject: [PATCH] PCI: iproc: Add support for the next-gen PAXB controller Add support for the next generation of the iProc PAXB host controller, used in Stingray. Signed-off-by: Oza Oza Signed-off-by: Ray Jui Signed-off-by: Bjorn Helgaas Reviewed-by: Scott Branden --- drivers/pci/host/pcie-iproc-platform.c | 3 + drivers/pci/host/pcie-iproc.c | 128 +++++++++++++++++++++++++ drivers/pci/host/pcie-iproc.h | 1 + 3 files changed, 132 insertions(+) diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/host/pcie-iproc-platform.c index 47329d34267c..fd3ed9bccaff 100644 --- a/drivers/pci/host/pcie-iproc-platform.c +++ b/drivers/pci/host/pcie-iproc-platform.c @@ -30,6 +30,9 @@ static const struct of_device_id iproc_pcie_of_match_table[] = { { .compatible = "brcm,iproc-pcie", .data = (int *)IPROC_PCIE_PAXB, + }, { + .compatible = "brcm,iproc-pcie-paxb-v2", + .data = (int *)IPROC_PCIE_PAXB_V2, }, { .compatible = "brcm,iproc-pcie-paxc", .data = (int *)IPROC_PCIE_PAXC, diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c index cbbbeaa46dad..3d02ad261761 100644 --- a/drivers/pci/host/pcie-iproc.c +++ b/drivers/pci/host/pcie-iproc.c @@ -118,6 +118,29 @@ static const struct iproc_pcie_ob_map paxb_ob_map[] = { }, }; +static const struct iproc_pcie_ob_map paxb_v2_ob_map[] = { + { + /* OARR0/OMAP0 */ + .window_sizes = { 128, 256 }, + .nr_sizes = 2, + }, + { + /* OARR1/OMAP1 */ + .window_sizes = { 128, 256 }, + .nr_sizes = 2, + }, + { + /* OARR2/OMAP2 */ + .window_sizes = { 128, 256, 512, 1024 }, + .nr_sizes = 4, + }, + { + /* OARR3/OMAP3 */ + .window_sizes = { 128, 256, 512, 1024 }, + .nr_sizes = 4, + }, +}; + /** * iProc PCIe inbound mapping type */ @@ -156,6 +179,54 @@ struct iproc_pcie_ib_map { u16 imap_window_offset; }; +static const struct iproc_pcie_ib_map paxb_v2_ib_map[] = { + { + /* IARR0/IMAP0 */ + .type = IPROC_PCIE_IB_MAP_IO, + .size_unit = SZ_1K, + .region_sizes = { 32 }, + .nr_sizes = 1, + .nr_windows = 8, + .imap_addr_offset = 0x40, + .imap_window_offset = 0x4, + }, + { + /* IARR1/IMAP1 (currently unused) */ + .type = IPROC_PCIE_IB_MAP_INVALID, + }, + { + /* IARR2/IMAP2 */ + .type = IPROC_PCIE_IB_MAP_MEM, + .size_unit = SZ_1M, + .region_sizes = { 64, 128, 256, 512, 1024, 2048, 4096, 8192, + 16384 }, + .nr_sizes = 9, + .nr_windows = 1, + .imap_addr_offset = 0x4, + .imap_window_offset = 0x8, + }, + { + /* IARR3/IMAP3 */ + .type = IPROC_PCIE_IB_MAP_MEM, + .size_unit = SZ_1G, + .region_sizes = { 1, 2, 4, 8, 16, 32 }, + .nr_sizes = 6, + .nr_windows = 8, + .imap_addr_offset = 0x4, + .imap_window_offset = 0x8, + }, + { + /* IARR4/IMAP4 */ + .type = IPROC_PCIE_IB_MAP_MEM, + .size_unit = SZ_1G, + .region_sizes = { 32, 64, 128, 256, 512 }, + .nr_sizes = 5, + .nr_windows = 8, + .imap_addr_offset = 0x4, + .imap_window_offset = 0x8, + }, +}; + /* * iProc PCIe host registers */ @@ -258,6 +329,34 @@ static const u16 iproc_pcie_reg_paxb[] = { [IPROC_PCIE_APB_ERR_EN] = 0xf40, }; +/* iProc PCIe PAXB v2 registers */ +static const u16 iproc_pcie_reg_paxb_v2[] = { + [IPROC_PCIE_CLK_CTRL] = 0x000, + [IPROC_PCIE_CFG_IND_ADDR] = 0x120, + [IPROC_PCIE_CFG_IND_DATA] = 0x124, + [IPROC_PCIE_CFG_ADDR] = 0x1f8, + [IPROC_PCIE_CFG_DATA] = 0x1fc, + [IPROC_PCIE_INTX_EN] = 0x330, + [IPROC_PCIE_OARR0] = 0xd20, + [IPROC_PCIE_OMAP0] = 0xd40, + [IPROC_PCIE_OARR1] = 0xd28, + [IPROC_PCIE_OMAP1] = 0xd48, + [IPROC_PCIE_OARR2] = 0xd60, + [IPROC_PCIE_OMAP2] = 0xd68, + [IPROC_PCIE_OARR3] = 0xdf0, + [IPROC_PCIE_OMAP3] = 0xdf8, + [IPROC_PCIE_IARR0] = 0xd00, + [IPROC_PCIE_IMAP0] = 0xc00, + [IPROC_PCIE_IARR2] = 0xd10, + [IPROC_PCIE_IMAP2] = 0xcc0, + [IPROC_PCIE_IARR3] = 0xe00, + [IPROC_PCIE_IMAP3] = 0xe08, + [IPROC_PCIE_IARR4] = 0xe68, + [IPROC_PCIE_IMAP4] = 0xe70, + [IPROC_PCIE_LINK_STATUS] = 0xf0c, + [IPROC_PCIE_APB_ERR_EN] = 0xf40, +}; + /* iProc PCIe PAXC v1 registers */ static const u16 iproc_pcie_reg_paxc[] = { [IPROC_PCIE_CLK_CTRL] = 0x000, @@ -914,6 +1013,19 @@ static int iproce_pcie_get_msi(struct iproc_pcie *pcie, return 0; } +static int iproc_pcie_paxb_v2_msi_steer(struct iproc_pcie *pcie, u64 msi_addr) +{ + int ret; + struct of_pci_range range; + + memset(&range, 0, sizeof(range)); + range.size = SZ_32K; + range.pci_addr = range.cpu_addr = ALIGN(msi_addr, range.size); + + ret = iproc_pcie_setup_ib(pcie, &range, IPROC_PCIE_IB_MAP_IO); + return ret; +} + static void iproc_pcie_paxc_v2_msi_steer(struct iproc_pcie *pcie, u64 msi_addr) { u32 val; @@ -965,6 +1077,11 @@ static int iproc_pcie_msi_steer(struct iproc_pcie *pcie, } switch (pcie->type) { + case IPROC_PCIE_PAXB_V2: + ret = iproc_pcie_paxb_v2_msi_steer(pcie, msi_addr); + if (ret) + return ret; + break; case IPROC_PCIE_PAXC_V2: iproc_pcie_paxc_v2_msi_steer(pcie, msi_addr); break; @@ -1042,6 +1159,17 @@ static int iproc_pcie_rev_init(struct iproc_pcie *pcie) pcie->ob.nr_windows = ARRAY_SIZE(paxb_ob_map); } break; + case IPROC_PCIE_PAXB_V2: + regs = iproc_pcie_reg_paxb_v2; + pcie->has_apb_err_disable = true; + if (pcie->need_ob_cfg) { + pcie->ob_map = paxb_v2_ob_map; + pcie->ob.nr_windows = ARRAY_SIZE(paxb_v2_ob_map); + } + pcie->ib.nr_regions = ARRAY_SIZE(paxb_v2_ib_map); + pcie->ib_map = paxb_v2_ib_map; + pcie->need_msi_steer = true; + break; case IPROC_PCIE_PAXC: regs = iproc_pcie_reg_paxc; pcie->ep_is_internal = true; diff --git a/drivers/pci/host/pcie-iproc.h b/drivers/pci/host/pcie-iproc.h index 3f2709af1a50..04fed8e907f1 100644 --- a/drivers/pci/host/pcie-iproc.h +++ b/drivers/pci/host/pcie-iproc.h @@ -26,6 +26,7 @@ enum iproc_pcie_type { IPROC_PCIE_PAXB_BCMA = 0, IPROC_PCIE_PAXB, + IPROC_PCIE_PAXB_V2, IPROC_PCIE_PAXC, IPROC_PCIE_PAXC_V2, }; -- 2.39.5