PCI: designware-ep: Add multiple PFs support for DWC

Add multiple PFs support for DWC, due to different PF have different
config space, we use func_conf_select callback function to access
the different PF's config space, the different chip company need to
implement this callback function when use the DWC IP core and intend
to support multiple PFs feature.

Link: https://lore.kernel.org/r/20200918080024.13639-2-Zhiqiang.Hou@nxp.com
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 05415a82e9f4157f629f7cbbe5e84eb5e4d28e6e..500d4ca04947ced74fa83404dd97abf96a4bf9f3 100644 (file)
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -30,12 +30,26 @@ void dw_pcie_ep_init_notify(struct dw_pcie_ep *ep)
 }
 EXPORT_SYMBOL_GPL(dw_pcie_ep_init_notify);
 
-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);
@@ -48,7 +62,12 @@ 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,
@@ -56,28 +75,31 @@ 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;
@@ -90,7 +112,7 @@ 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");
@@ -103,7 +125,8 @@ 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;
@@ -115,8 +138,8 @@ 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;
@@ -132,7 +155,7 @@ 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);
@@ -149,14 +172,20 @@ 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;
 
@@ -215,7 +244,7 @@ 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;
@@ -229,11 +258,14 @@ 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;
@@ -248,11 +280,14 @@ 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;
@@ -268,11 +303,14 @@ 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;
@@ -288,23 +326,26 @@ 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;
 
        dw_pcie_dbi_ro_wr_en(pci);
 
-       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;
        dw_pcie_writew_dbi(pci, reg, val);
 
-       reg = ep->msix_cap + PCI_MSIX_TABLE;
+       reg = ep->msix_cap + func_offset + PCI_MSIX_TABLE;
        val = offset | bir;
        dw_pcie_writel_dbi(pci, reg, val);
 
-       reg = ep->msix_cap + PCI_MSIX_PBA;
+       reg = ep->msix_cap + func_offset + PCI_MSIX_PBA;
        val = (offset + (interrupts * PCI_MSIX_ENTRY_SIZE)) | bir;
        dw_pcie_writel_dbi(pci, reg, val);
 
@@ -389,6 +430,7 @@ 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;
@@ -398,20 +440,22 @@ 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->window.page_size - 1);
@@ -430,11 +474,12 @@ 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_epf_msix_tbl *msix_tbl;
        struct pci_epc *epc = ep->epc;
+       unsigned int func_offset = 0;
        u32 reg, msg_data, vec_ctrl;
        unsigned int aligned_offset;
        u32 tbl_offset;
@@ -442,7 +487,9 @@ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
        int ret;
        u8 bir;
 
-       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;
@@ -607,13 +654,13 @@ 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 3c3a4d1dbc0b1ed75add2c910dff8f0c9dbbaa93..3fe859f3422d42f12c33b17255a34d18057465d9 100644 (file)
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -224,9 +224,10 @@ 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;
        u64 limit_addr = cpu_addr + size - 1;
@@ -244,7 +245,7 @@ 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);
 
@@ -263,8 +264,9 @@ 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;
 
@@ -272,8 +274,8 @@ 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;
        }
 
@@ -289,7 +291,8 @@ 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);
 
        /*
@@ -306,6 +309,21 @@ 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);
@@ -321,8 +339,8 @@ 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;
@@ -344,8 +362,10 @@ 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));
 
@@ -366,14 +386,15 @@ 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 |
@@ -392,9 +413,11 @@ 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 8cbc902a311ae1431f694081d3ecc7eb3eabfe0f..32102ebc5c379bb64e1b4e82744b3ea7ed592163 100644 (file)
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -88,9 +88,11 @@
 #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);