From patchwork Mon Sep 2 03:17:06 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaowei Bao X-Patchwork-Id: 11125851 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 096A717EF for ; Mon, 2 Sep 2019 03:28:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D329022D6D for ; Mon, 2 Sep 2019 03:28:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729313AbfIBD1m (ORCPT ); Sun, 1 Sep 2019 23:27:42 -0400 Received: from inva020.nxp.com ([92.121.34.13]:60988 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729239AbfIBD1m (ORCPT ); Sun, 1 Sep 2019 23:27:42 -0400 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 0D5031A064B; Mon, 2 Sep 2019 05:27:38 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 50C0A1A0653; Mon, 2 Sep 2019 05:27:29 +0200 (CEST) Received: from titan.ap.freescale.net (TITAN.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id A10954030C; Mon, 2 Sep 2019 11:27:18 +0800 (SGT) From: Xiaowei Bao To: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, leoyang.li@nxp.com, kishon@ti.com, lorenzo.pieralisi@arm.com, minghuan.Lian@nxp.com, mingkai.hu@nxp.com, roy.zang@nxp.com, jingoohan1@gmail.com, gustavo.pimentel@synopsys.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org Cc: arnd@arndb.de, gregkh@linuxfoundation.org, zhiqiang.hou@nxp.com, Xiaowei Bao Subject: [PATCH v3 01/11] PCI: designware-ep: Add multiple PFs support for DWC Date: Mon, 2 Sep 2019 11:17:06 +0800 Message-Id: <20190902031716.43195-2-xiaowei.bao@nxp.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20190902031716.43195-1-xiaowei.bao@nxp.com> References: <20190902031716.43195-1-xiaowei.bao@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add multiple PFs support for DWC, different PF have different config space we use pf-offset property which get from the DTS to access the different pF config space. Signed-off-by: Xiaowei Bao --- v2: - Remove duplicate redundant code. - Reimplement the PF config space access way. v3: - Integrate duplicate code for func_select. - Move PCIE_ATU_FUNC_NUM(pf) (pf << 20) to ((pf) << 20). - Add the comments for func_conf_select function. drivers/pci/controller/dwc/pcie-designware-ep.c | 123 ++++++++++++++++-------- drivers/pci/controller/dwc/pcie-designware.c | 59 ++++++++---- drivers/pci/controller/dwc/pcie-designware.h | 18 +++- 3 files changed, 142 insertions(+), 58 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index 65f4792..eb851c2 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -19,12 +19,26 @@ void dw_pcie_ep_linkup(struct dw_pcie_ep *ep) pci_epc_linkup(epc); } -static void __dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar, - int flags) +static unsigned int dw_pcie_ep_func_select(struct dw_pcie_ep *ep, u8 func_no) +{ + unsigned int func_offset = 0; + + if (ep->ops->func_conf_select) + func_offset = ep->ops->func_conf_select(ep, func_no); + + return func_offset; +} + +static void __dw_pcie_ep_reset_bar(struct dw_pcie *pci, u8 func_no, + enum pci_barno bar, int flags) { u32 reg; + unsigned int func_offset = 0; + struct dw_pcie_ep *ep = &pci->ep; + + func_offset = dw_pcie_ep_func_select(ep, func_no); - reg = PCI_BASE_ADDRESS_0 + (4 * bar); + reg = func_offset + PCI_BASE_ADDRESS_0 + (4 * bar); dw_pcie_dbi_ro_wr_en(pci); dw_pcie_writel_dbi2(pci, reg, 0x0); dw_pcie_writel_dbi(pci, reg, 0x0); @@ -37,7 +51,12 @@ static void __dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar, void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar) { - __dw_pcie_ep_reset_bar(pci, bar, 0); + u8 func_no, funcs; + + funcs = pci->ep.epc->max_functions; + + for (func_no = 0; func_no < funcs; func_no++) + __dw_pcie_ep_reset_bar(pci, func_no, bar, 0); } static int dw_pcie_ep_write_header(struct pci_epc *epc, u8 func_no, @@ -45,28 +64,31 @@ static int dw_pcie_ep_write_header(struct pci_epc *epc, u8 func_no, { struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); + unsigned int func_offset = 0; + + func_offset = dw_pcie_ep_func_select(ep, func_no); dw_pcie_dbi_ro_wr_en(pci); - dw_pcie_writew_dbi(pci, PCI_VENDOR_ID, hdr->vendorid); - dw_pcie_writew_dbi(pci, PCI_DEVICE_ID, hdr->deviceid); - dw_pcie_writeb_dbi(pci, PCI_REVISION_ID, hdr->revid); - dw_pcie_writeb_dbi(pci, PCI_CLASS_PROG, hdr->progif_code); - dw_pcie_writew_dbi(pci, PCI_CLASS_DEVICE, + dw_pcie_writew_dbi(pci, func_offset + PCI_VENDOR_ID, hdr->vendorid); + dw_pcie_writew_dbi(pci, func_offset + PCI_DEVICE_ID, hdr->deviceid); + dw_pcie_writeb_dbi(pci, func_offset + PCI_REVISION_ID, hdr->revid); + dw_pcie_writeb_dbi(pci, func_offset + PCI_CLASS_PROG, hdr->progif_code); + dw_pcie_writew_dbi(pci, func_offset + PCI_CLASS_DEVICE, hdr->subclass_code | hdr->baseclass_code << 8); - dw_pcie_writeb_dbi(pci, PCI_CACHE_LINE_SIZE, + dw_pcie_writeb_dbi(pci, func_offset + PCI_CACHE_LINE_SIZE, hdr->cache_line_size); - dw_pcie_writew_dbi(pci, PCI_SUBSYSTEM_VENDOR_ID, + dw_pcie_writew_dbi(pci, func_offset + PCI_SUBSYSTEM_VENDOR_ID, hdr->subsys_vendor_id); - dw_pcie_writew_dbi(pci, PCI_SUBSYSTEM_ID, hdr->subsys_id); - dw_pcie_writeb_dbi(pci, PCI_INTERRUPT_PIN, + dw_pcie_writew_dbi(pci, func_offset + PCI_SUBSYSTEM_ID, hdr->subsys_id); + dw_pcie_writeb_dbi(pci, func_offset + PCI_INTERRUPT_PIN, hdr->interrupt_pin); dw_pcie_dbi_ro_wr_dis(pci); return 0; } -static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, enum pci_barno bar, - dma_addr_t cpu_addr, +static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, u8 func_no, + enum pci_barno bar, dma_addr_t cpu_addr, enum dw_pcie_as_type as_type) { int ret; @@ -79,7 +101,7 @@ static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, enum pci_barno bar, return -EINVAL; } - ret = dw_pcie_prog_inbound_atu(pci, free_win, bar, cpu_addr, + ret = dw_pcie_prog_inbound_atu(pci, func_no, free_win, bar, cpu_addr, as_type); if (ret < 0) { dev_err(pci->dev, "Failed to program IB window\n"); @@ -92,7 +114,8 @@ static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, enum pci_barno bar, return 0; } -static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep, phys_addr_t phys_addr, +static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep, u8 func_no, + phys_addr_t phys_addr, u64 pci_addr, size_t size) { u32 free_win; @@ -104,8 +127,8 @@ static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep, phys_addr_t phys_addr, return -EINVAL; } - dw_pcie_prog_outbound_atu(pci, free_win, PCIE_ATU_TYPE_MEM, - phys_addr, pci_addr, size); + dw_pcie_prog_ep_outbound_atu(pci, func_no, free_win, PCIE_ATU_TYPE_MEM, + phys_addr, pci_addr, size); set_bit(free_win, ep->ob_window_map); ep->outbound_addr[free_win] = phys_addr; @@ -121,7 +144,7 @@ static void dw_pcie_ep_clear_bar(struct pci_epc *epc, u8 func_no, enum pci_barno bar = epf_bar->barno; u32 atu_index = ep->bar_to_atu[bar]; - __dw_pcie_ep_reset_bar(pci, bar, epf_bar->flags); + __dw_pcie_ep_reset_bar(pci, func_no, bar, epf_bar->flags); dw_pcie_disable_atu(pci, atu_index, DW_PCIE_REGION_INBOUND); clear_bit(atu_index, ep->ib_window_map); @@ -137,14 +160,20 @@ static int dw_pcie_ep_set_bar(struct pci_epc *epc, u8 func_no, size_t size = epf_bar->size; int flags = epf_bar->flags; enum dw_pcie_as_type as_type; - u32 reg = PCI_BASE_ADDRESS_0 + (4 * bar); + u32 reg; + unsigned int func_offset = 0; + + func_offset = dw_pcie_ep_func_select(ep, func_no); + + reg = PCI_BASE_ADDRESS_0 + (4 * bar) + func_offset; if (!(flags & PCI_BASE_ADDRESS_SPACE)) as_type = DW_PCIE_AS_MEM; else as_type = DW_PCIE_AS_IO; - ret = dw_pcie_ep_inbound_atu(ep, bar, epf_bar->phys_addr, as_type); + ret = dw_pcie_ep_inbound_atu(ep, func_no, bar, + epf_bar->phys_addr, as_type); if (ret) return ret; @@ -202,7 +231,7 @@ static int dw_pcie_ep_map_addr(struct pci_epc *epc, u8 func_no, struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - ret = dw_pcie_ep_outbound_atu(ep, addr, pci_addr, size); + ret = dw_pcie_ep_outbound_atu(ep, func_no, addr, pci_addr, size); if (ret) { dev_err(pci->dev, "Failed to enable address\n"); return ret; @@ -216,11 +245,14 @@ static int dw_pcie_ep_get_msi(struct pci_epc *epc, u8 func_no) struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); u32 val, reg; + unsigned int func_offset = 0; if (!ep->msi_cap) return -EINVAL; - reg = ep->msi_cap + PCI_MSI_FLAGS; + func_offset = dw_pcie_ep_func_select(ep, func_no); + + reg = ep->msi_cap + func_offset + PCI_MSI_FLAGS; val = dw_pcie_readw_dbi(pci, reg); if (!(val & PCI_MSI_FLAGS_ENABLE)) return -EINVAL; @@ -235,11 +267,14 @@ static int dw_pcie_ep_set_msi(struct pci_epc *epc, u8 func_no, u8 interrupts) struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); u32 val, reg; + unsigned int func_offset = 0; if (!ep->msi_cap) return -EINVAL; - reg = ep->msi_cap + PCI_MSI_FLAGS; + func_offset = dw_pcie_ep_func_select(ep, func_no); + + reg = ep->msi_cap + func_offset + PCI_MSI_FLAGS; val = dw_pcie_readw_dbi(pci, reg); val &= ~PCI_MSI_FLAGS_QMASK; val |= (interrupts << 1) & PCI_MSI_FLAGS_QMASK; @@ -255,11 +290,14 @@ static int dw_pcie_ep_get_msix(struct pci_epc *epc, u8 func_no) struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); u32 val, reg; + unsigned int func_offset = 0; if (!ep->msix_cap) return -EINVAL; - reg = ep->msix_cap + PCI_MSIX_FLAGS; + func_offset = dw_pcie_ep_func_select(ep, func_no); + + reg = ep->msix_cap + func_offset + PCI_MSIX_FLAGS; val = dw_pcie_readw_dbi(pci, reg); if (!(val & PCI_MSIX_FLAGS_ENABLE)) return -EINVAL; @@ -274,11 +312,14 @@ static int dw_pcie_ep_set_msix(struct pci_epc *epc, u8 func_no, u16 interrupts) struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); u32 val, reg; + unsigned int func_offset = 0; if (!ep->msix_cap) return -EINVAL; - reg = ep->msix_cap + PCI_MSIX_FLAGS; + func_offset = dw_pcie_ep_func_select(ep, func_no); + + reg = ep->msix_cap + func_offset + PCI_MSIX_FLAGS; val = dw_pcie_readw_dbi(pci, reg); val &= ~PCI_MSIX_FLAGS_QSIZE; val |= interrupts; @@ -365,6 +406,7 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, struct dw_pcie *pci = to_dw_pcie_from_ep(ep); struct pci_epc *epc = ep->epc; unsigned int aligned_offset; + unsigned int func_offset = 0; u16 msg_ctrl, msg_data; u32 msg_addr_lower, msg_addr_upper, reg; u64 msg_addr; @@ -374,20 +416,22 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, if (!ep->msi_cap) return -EINVAL; + func_offset = dw_pcie_ep_func_select(ep, func_no); + /* Raise MSI per the PCI Local Bus Specification Revision 3.0, 6.8.1. */ - reg = ep->msi_cap + PCI_MSI_FLAGS; + reg = ep->msi_cap + func_offset + PCI_MSI_FLAGS; msg_ctrl = dw_pcie_readw_dbi(pci, reg); has_upper = !!(msg_ctrl & PCI_MSI_FLAGS_64BIT); - reg = ep->msi_cap + PCI_MSI_ADDRESS_LO; + reg = ep->msi_cap + func_offset + PCI_MSI_ADDRESS_LO; msg_addr_lower = dw_pcie_readl_dbi(pci, reg); if (has_upper) { - reg = ep->msi_cap + PCI_MSI_ADDRESS_HI; + reg = ep->msi_cap + func_offset + PCI_MSI_ADDRESS_HI; msg_addr_upper = dw_pcie_readl_dbi(pci, reg); - reg = ep->msi_cap + PCI_MSI_DATA_64; + reg = ep->msi_cap + func_offset + PCI_MSI_DATA_64; msg_data = dw_pcie_readw_dbi(pci, reg); } else { msg_addr_upper = 0; - reg = ep->msi_cap + PCI_MSI_DATA_32; + reg = ep->msi_cap + func_offset + PCI_MSI_DATA_32; msg_data = dw_pcie_readw_dbi(pci, reg); } aligned_offset = msg_addr_lower & (epc->mem->page_size - 1); @@ -406,11 +450,12 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, } int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no, - u16 interrupt_num) + u16 interrupt_num) { struct dw_pcie *pci = to_dw_pcie_from_ep(ep); struct pci_epc *epc = ep->epc; u16 tbl_offset, bir; + unsigned int func_offset = 0; u32 bar_addr_upper, bar_addr_lower; u32 msg_addr_upper, msg_addr_lower; u32 reg, msg_data, vec_ctrl; @@ -418,12 +463,14 @@ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no, void __iomem *msix_tbl; int ret; - reg = ep->msix_cap + PCI_MSIX_TABLE; + func_offset = dw_pcie_ep_func_select(ep, func_no); + + reg = ep->msix_cap + func_offset + PCI_MSIX_TABLE; tbl_offset = dw_pcie_readl_dbi(pci, reg); bir = (tbl_offset & PCI_MSIX_TABLE_BIR); tbl_offset &= PCI_MSIX_TABLE_OFFSET; - reg = PCI_BASE_ADDRESS_0 + (4 * bir); + reg = PCI_BASE_ADDRESS_0 + func_offset + (4 * bir); bar_addr_upper = 0; bar_addr_lower = dw_pcie_readl_dbi(pci, reg); reg_u64 = (bar_addr_lower & PCI_BASE_ADDRESS_MEM_TYPE_MASK); @@ -559,13 +606,13 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) ep->epc = epc; epc_set_drvdata(epc, ep); - if (ep->ops->ep_init) - ep->ops->ep_init(ep); - ret = of_property_read_u8(np, "max-functions", &epc->max_functions); if (ret < 0) epc->max_functions = 1; + if (ep->ops->ep_init) + ep->ops->ep_init(ep); + ret = __pci_epc_mem_init(epc, ep->phys_base, ep->addr_size, ep->page_size); if (ret < 0) { diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 143cb6c..ede2e75 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -238,9 +238,10 @@ static void dw_pcie_writel_ob_unroll(struct dw_pcie *pci, u32 index, u32 reg, dw_pcie_writel_atu(pci, offset + reg, val); } -static void dw_pcie_prog_outbound_atu_unroll(struct dw_pcie *pci, int index, - int type, u64 cpu_addr, - u64 pci_addr, u32 size) +static void dw_pcie_prog_outbound_atu_unroll(struct dw_pcie *pci, u8 func_no, + int index, int type, + u64 cpu_addr, u64 pci_addr, + u32 size) { u32 retries, val; @@ -255,7 +256,7 @@ static void dw_pcie_prog_outbound_atu_unroll(struct dw_pcie *pci, int index, dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_UPPER_TARGET, upper_32_bits(pci_addr)); dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_REGION_CTRL1, - type); + type | PCIE_ATU_FUNC_NUM(func_no)); dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_REGION_CTRL2, PCIE_ATU_ENABLE); @@ -274,8 +275,9 @@ static void dw_pcie_prog_outbound_atu_unroll(struct dw_pcie *pci, int index, dev_err(pci->dev, "Outbound iATU is not being enabled\n"); } -void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type, - u64 cpu_addr, u64 pci_addr, u32 size) +static void __dw_pcie_prog_outbound_atu(struct dw_pcie *pci, u8 func_no, + int index, int type, u64 cpu_addr, + u64 pci_addr, u32 size) { u32 retries, val; @@ -283,8 +285,8 @@ void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type, cpu_addr = pci->ops->cpu_addr_fixup(pci, cpu_addr); if (pci->iatu_unroll_enabled) { - dw_pcie_prog_outbound_atu_unroll(pci, index, type, cpu_addr, - pci_addr, size); + dw_pcie_prog_outbound_atu_unroll(pci, func_no, index, type, + cpu_addr, pci_addr, size); return; } @@ -300,7 +302,8 @@ void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type, lower_32_bits(pci_addr)); dw_pcie_writel_dbi(pci, PCIE_ATU_UPPER_TARGET, upper_32_bits(pci_addr)); - dw_pcie_writel_dbi(pci, PCIE_ATU_CR1, type); + dw_pcie_writel_dbi(pci, PCIE_ATU_CR1, type | + PCIE_ATU_FUNC_NUM(func_no)); dw_pcie_writel_dbi(pci, PCIE_ATU_CR2, PCIE_ATU_ENABLE); /* @@ -317,6 +320,21 @@ void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type, dev_err(pci->dev, "Outbound iATU is not being enabled\n"); } +void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type, + u64 cpu_addr, u64 pci_addr, u32 size) +{ + __dw_pcie_prog_outbound_atu(pci, 0, index, type, + cpu_addr, pci_addr, size); +} + +void dw_pcie_prog_ep_outbound_atu(struct dw_pcie *pci, u8 func_no, int index, + int type, u64 cpu_addr, u64 pci_addr, + u32 size) +{ + __dw_pcie_prog_outbound_atu(pci, func_no, index, type, + cpu_addr, pci_addr, size); +} + static u32 dw_pcie_readl_ib_unroll(struct dw_pcie *pci, u32 index, u32 reg) { u32 offset = PCIE_GET_ATU_INB_UNR_REG_OFFSET(index); @@ -332,8 +350,8 @@ static void dw_pcie_writel_ib_unroll(struct dw_pcie *pci, u32 index, u32 reg, dw_pcie_writel_atu(pci, offset + reg, val); } -static int dw_pcie_prog_inbound_atu_unroll(struct dw_pcie *pci, int index, - int bar, u64 cpu_addr, +static int dw_pcie_prog_inbound_atu_unroll(struct dw_pcie *pci, u8 func_no, + int index, int bar, u64 cpu_addr, enum dw_pcie_as_type as_type) { int type; @@ -355,8 +373,10 @@ static int dw_pcie_prog_inbound_atu_unroll(struct dw_pcie *pci, int index, return -EINVAL; } - dw_pcie_writel_ib_unroll(pci, index, PCIE_ATU_UNR_REGION_CTRL1, type); + dw_pcie_writel_ib_unroll(pci, index, PCIE_ATU_UNR_REGION_CTRL1, type | + PCIE_ATU_FUNC_NUM(func_no)); dw_pcie_writel_ib_unroll(pci, index, PCIE_ATU_UNR_REGION_CTRL2, + PCIE_ATU_FUNC_NUM_MATCH_EN | PCIE_ATU_ENABLE | PCIE_ATU_BAR_MODE_ENABLE | (bar << 8)); @@ -377,14 +397,15 @@ static int dw_pcie_prog_inbound_atu_unroll(struct dw_pcie *pci, int index, return -EBUSY; } -int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, int index, int bar, - u64 cpu_addr, enum dw_pcie_as_type as_type) +int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, u8 func_no, int index, + int bar, u64 cpu_addr, + enum dw_pcie_as_type as_type) { int type; u32 retries, val; if (pci->iatu_unroll_enabled) - return dw_pcie_prog_inbound_atu_unroll(pci, index, bar, + return dw_pcie_prog_inbound_atu_unroll(pci, func_no, index, bar, cpu_addr, as_type); dw_pcie_writel_dbi(pci, PCIE_ATU_VIEWPORT, PCIE_ATU_REGION_INBOUND | @@ -403,9 +424,11 @@ int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, int index, int bar, return -EINVAL; } - dw_pcie_writel_dbi(pci, PCIE_ATU_CR1, type); - dw_pcie_writel_dbi(pci, PCIE_ATU_CR2, PCIE_ATU_ENABLE - | PCIE_ATU_BAR_MODE_ENABLE | (bar << 8)); + dw_pcie_writel_dbi(pci, PCIE_ATU_CR1, type | + PCIE_ATU_FUNC_NUM(func_no)); + dw_pcie_writel_dbi(pci, PCIE_ATU_CR2, PCIE_ATU_ENABLE | + PCIE_ATU_FUNC_NUM_MATCH_EN | + PCIE_ATU_BAR_MODE_ENABLE | (bar << 8)); /* * Make sure ATU enable takes effect before any subsequent config diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 5a18e94..6aca0bb 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -71,9 +71,11 @@ #define PCIE_ATU_TYPE_IO 0x2 #define PCIE_ATU_TYPE_CFG0 0x4 #define PCIE_ATU_TYPE_CFG1 0x5 +#define PCIE_ATU_FUNC_NUM(pf) ((pf) << 20) #define PCIE_ATU_CR2 0x908 #define PCIE_ATU_ENABLE BIT(31) #define PCIE_ATU_BAR_MODE_ENABLE BIT(30) +#define PCIE_ATU_FUNC_NUM_MATCH_EN BIT(19) #define PCIE_ATU_LOWER_BASE 0x90C #define PCIE_ATU_UPPER_BASE 0x910 #define PCIE_ATU_LIMIT 0x914 @@ -206,6 +208,14 @@ struct dw_pcie_ep_ops { int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no, enum pci_epc_irq_type type, u16 interrupt_num); const struct pci_epc_features* (*get_features)(struct dw_pcie_ep *ep); + /* + * Provide a method to implement the different func config space + * access for different platform, if different func have different + * offset, return the offset of func. if use write a register way + * return a 0, and implement code in callback function of platform + * driver. + */ + unsigned int (*func_conf_select)(struct dw_pcie_ep *ep, u8 func_no); }; struct dw_pcie_ep { @@ -277,8 +287,12 @@ int dw_pcie_wait_for_link(struct dw_pcie *pci); void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type, u64 cpu_addr, u64 pci_addr, u32 size); -int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, int index, int bar, - u64 cpu_addr, enum dw_pcie_as_type as_type); +void dw_pcie_prog_ep_outbound_atu(struct dw_pcie *pci, u8 func_no, int index, + int type, u64 cpu_addr, u64 pci_addr, + u32 size); +int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, u8 func_no, int index, + int bar, u64 cpu_addr, + enum dw_pcie_as_type as_type); void dw_pcie_disable_atu(struct dw_pcie *pci, int index, enum dw_pcie_region_type type); void dw_pcie_setup(struct dw_pcie *pci);