[PATCH v4 00/11] Add the multiple PF support for DWC and Layerscape

[PATCH v4 00/11] Add the multiple PF support for DWC and Layerscape

[Xiaowei Bao]

Add the PCIe EP multiple PF support for DWC and Layerscape, add
the doorbell MSIX function for DWC, use list to manage the PF of
one PCIe controller, and refactor the Layerscape EP driver due to
some platforms difference.

Xiaowei Bao (11):
  PCI: designware-ep: Add multiple PFs support for DWC
  PCI: designware-ep: Add the doorbell mode of MSI-X in EP mode
  PCI: designware-ep: Move the function of getting MSI capability
    forward
  PCI: designware-ep: Modify MSI and MSIX CAP way of finding
  dt-bindings: pci: layerscape-pci: add compatible strings for ls1088a
    and ls2088a
  PCI: layerscape: Fix some format issue of the code
  PCI: layerscape: Modify the way of getting capability with different
    PEX
  PCI: layerscape: Modify the MSIX to the doorbell mode
  PCI: layerscape: Add EP mode support for ls1088a and ls2088a
  arm64: dts: layerscape: Add PCIe EP node for ls1088a
  misc: pci_endpoint_test: Add LS1088a in pci_device_id table

 .../devicetree/bindings/pci/layerscape-pci.txt     |   2 +
 arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi     |  31 +++
 drivers/misc/pci_endpoint_test.c                   |   2 +
 drivers/pci/controller/dwc/pci-layerscape-ep.c     | 100 ++++++--
 drivers/pci/controller/dwc/pcie-designware-ep.c    | 255 +++++++++++++++++----
 drivers/pci/controller/dwc/pcie-designware.c       |  59 +++--
 drivers/pci/controller/dwc/pcie-designware.h       |  48 +++-
 7 files changed, 404 insertions(+), 93 deletions(-)

-- 
2.9.5

[PATCH v4 01/11] PCI: designware-ep: Add multiple PFs support for DWC

[Xiaowei Bao]

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.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
---
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.
v4:
 - Correct the commit message.

 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);
-- 
2.9.5

[PATCH v4 02/11] PCI: designware-ep: Add the doorbell mode of MSI-X in EP mode

[Xiaowei Bao]

Add the doorbell mode of MSI-X in DWC EP driver.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
---
v2:
 - Remove the macro of no used.
v3:
 - No change.
v4:
 - Modify the commit message.

 drivers/pci/controller/dwc/pcie-designware-ep.c | 14 ++++++++++++++
 drivers/pci/controller/dwc/pcie-designware.h    | 12 ++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index eb851c2..55b23ce 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -449,6 +449,20 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
 	return 0;
 }
 
+int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep, u8 func_no,
+				       u16 interrupt_num)
+{
+	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+	u32 msg_data;
+
+	msg_data = (func_no << PCIE_MSIX_DOORBELL_PF_SHIFT) |
+		   (interrupt_num - 1);
+
+	dw_pcie_writel_dbi(pci, PCIE_MSIX_DOORBELL, msg_data);
+
+	return 0;
+}
+
 int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
 			      u16 interrupt_num)
 {
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 6aca0bb..56789be 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -88,6 +88,9 @@
 #define PCIE_MISC_CONTROL_1_OFF		0x8BC
 #define PCIE_DBI_RO_WR_EN		BIT(0)
 
+#define PCIE_MSIX_DOORBELL		0x948
+#define PCIE_MSIX_DOORBELL_PF_SHIFT	24
+
 #define PCIE_PL_CHK_REG_CONTROL_STATUS			0xB20
 #define PCIE_PL_CHK_REG_CHK_REG_START			BIT(0)
 #define PCIE_PL_CHK_REG_CHK_REG_CONTINUOUS		BIT(1)
@@ -419,6 +422,8 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
 			     u8 interrupt_num);
 int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
 			     u16 interrupt_num);
+int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep, u8 func_no,
+				       u16 interrupt_num);
 void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar);
 #else
 static inline void dw_pcie_ep_linkup(struct dw_pcie_ep *ep)
@@ -451,6 +456,13 @@ static inline int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
 	return 0;
 }
 
+static inline int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep,
+						     u8 func_no,
+						     u16 interrupt_num)
+{
+	return 0;
+}
+
 static inline void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar)
 {
 }
-- 
2.9.5

[PATCH v4 03/11] PCI: designware-ep: Move the function of getting MSI capability forward

[Xiaowei Bao]

Move the function of getting MSI capability to the front of init
function, because the init function of the EP platform driver will use
the return value by the function of getting MSI capability.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
---
v2:
 - No change.
v3:
 - No change.
v4:
 - No change.

 drivers/pci/controller/dwc/pcie-designware-ep.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 55b23ce..c3bc7bd 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -624,6 +624,10 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
 	if (ret < 0)
 		epc->max_functions = 1;
 
+	ep->msi_cap = dw_pcie_find_capability(pci, PCI_CAP_ID_MSI);
+
+	ep->msix_cap = dw_pcie_find_capability(pci, PCI_CAP_ID_MSIX);
+
 	if (ep->ops->ep_init)
 		ep->ops->ep_init(ep);
 
@@ -640,9 +644,6 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
 		dev_err(dev, "Failed to reserve memory for MSI/MSI-X\n");
 		return -ENOMEM;
 	}
-	ep->msi_cap = dw_pcie_find_capability(pci, PCI_CAP_ID_MSI);
-
-	ep->msix_cap = dw_pcie_find_capability(pci, PCI_CAP_ID_MSIX);
 
 	offset = dw_pcie_ep_find_ext_capability(pci, PCI_EXT_CAP_ID_REBAR);
 	if (offset) {
-- 
2.9.5

[PATCH v4 04/11] PCI: designware-ep: Modify MSI and MSIX CAP way of finding

[Xiaowei Bao]

Each PF of EP device should have it's own MSI or MSIX capabitily
struct, so create a dw_pcie_ep_func struct and remove the msi_cap
and msix_cap to this struct from dw_pcie_ep, and manage the PFs
with a list.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
---
v3:
 - This is a new patch, to fix the issue of MSI and MSIX CAP way of
   finding.
v4:
 - Correct some word of commit message.

 drivers/pci/controller/dwc/pcie-designware-ep.c | 135 +++++++++++++++++++++---
 drivers/pci/controller/dwc/pcie-designware.h    |  18 +++-
 2 files changed, 134 insertions(+), 19 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index c3bc7bd..144eb12 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -19,6 +19,19 @@ void dw_pcie_ep_linkup(struct dw_pcie_ep *ep)
 	pci_epc_linkup(epc);
 }
 
+struct dw_pcie_ep_func *
+dw_pcie_ep_get_func_from_ep(struct dw_pcie_ep *ep, u8 func_no)
+{
+	struct dw_pcie_ep_func *ep_func;
+
+	list_for_each_entry(ep_func, &ep->func_list, list) {
+		if (ep_func->func_no == func_no)
+			return ep_func;
+	}
+
+	return NULL;
+}
+
 static unsigned int dw_pcie_ep_func_select(struct dw_pcie_ep *ep, u8 func_no)
 {
 	unsigned int func_offset = 0;
@@ -59,6 +72,47 @@ void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar)
 		__dw_pcie_ep_reset_bar(pci, func_no, bar, 0);
 }
 
+static u8 __dw_pcie_ep_find_next_cap(struct dw_pcie_ep *ep, u8 func_no,
+		u8 cap_ptr, u8 cap)
+{
+	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+	unsigned int func_offset = 0;
+	u8 cap_id, next_cap_ptr;
+	u16 reg;
+
+	if (!cap_ptr)
+		return 0;
+
+	func_offset = dw_pcie_ep_func_select(ep, func_no);
+
+	reg = dw_pcie_readw_dbi(pci, func_offset + cap_ptr);
+	cap_id = (reg & 0x00ff);
+
+	if (cap_id > PCI_CAP_ID_MAX)
+		return 0;
+
+	if (cap_id == cap)
+		return cap_ptr;
+
+	next_cap_ptr = (reg & 0xff00) >> 8;
+	return __dw_pcie_ep_find_next_cap(ep, func_no, next_cap_ptr, cap);
+}
+
+static u8 dw_pcie_ep_find_capability(struct dw_pcie_ep *ep, u8 func_no, u8 cap)
+{
+	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+	unsigned int func_offset = 0;
+	u8 next_cap_ptr;
+	u16 reg;
+
+	func_offset = dw_pcie_ep_func_select(ep, func_no);
+
+	reg = dw_pcie_readw_dbi(pci, func_offset + PCI_CAPABILITY_LIST);
+	next_cap_ptr = (reg & 0x00ff);
+
+	return __dw_pcie_ep_find_next_cap(ep, func_no, next_cap_ptr, cap);
+}
+
 static int dw_pcie_ep_write_header(struct pci_epc *epc, u8 func_no,
 				   struct pci_epf_header *hdr)
 {
@@ -246,13 +300,18 @@ static int dw_pcie_ep_get_msi(struct pci_epc *epc, u8 func_no)
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 	u32 val, reg;
 	unsigned int func_offset = 0;
+	struct dw_pcie_ep_func *ep_func;
 
-	if (!ep->msi_cap)
+	ep_func = dw_pcie_ep_get_func_from_ep(ep, func_no);
+	if (!ep_func)
+		return -EINVAL;
+
+	if (!ep_func->msi_cap)
 		return -EINVAL;
 
 	func_offset = dw_pcie_ep_func_select(ep, func_no);
 
-	reg = ep->msi_cap + func_offset + PCI_MSI_FLAGS;
+	reg = ep_func->msi_cap + func_offset + PCI_MSI_FLAGS;
 	val = dw_pcie_readw_dbi(pci, reg);
 	if (!(val & PCI_MSI_FLAGS_ENABLE))
 		return -EINVAL;
@@ -268,13 +327,18 @@ static int dw_pcie_ep_set_msi(struct pci_epc *epc, u8 func_no, u8 interrupts)
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 	u32 val, reg;
 	unsigned int func_offset = 0;
+	struct dw_pcie_ep_func *ep_func;
+
+	ep_func = dw_pcie_ep_get_func_from_ep(ep, func_no);
+	if (!ep_func)
+		return -EINVAL;
 
-	if (!ep->msi_cap)
+	if (!ep_func->msi_cap)
 		return -EINVAL;
 
 	func_offset = dw_pcie_ep_func_select(ep, func_no);
 
-	reg = ep->msi_cap + func_offset + PCI_MSI_FLAGS;
+	reg = ep_func->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;
@@ -291,13 +355,18 @@ static int dw_pcie_ep_get_msix(struct pci_epc *epc, u8 func_no)
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 	u32 val, reg;
 	unsigned int func_offset = 0;
+	struct dw_pcie_ep_func *ep_func;
+
+	ep_func = dw_pcie_ep_get_func_from_ep(ep, func_no);
+	if (!ep_func)
+		return -EINVAL;
 
-	if (!ep->msix_cap)
+	if (!ep_func->msix_cap)
 		return -EINVAL;
 
 	func_offset = dw_pcie_ep_func_select(ep, func_no);
 
-	reg = ep->msix_cap + func_offset + PCI_MSIX_FLAGS;
+	reg = ep_func->msix_cap + func_offset + PCI_MSIX_FLAGS;
 	val = dw_pcie_readw_dbi(pci, reg);
 	if (!(val & PCI_MSIX_FLAGS_ENABLE))
 		return -EINVAL;
@@ -313,13 +382,18 @@ static int dw_pcie_ep_set_msix(struct pci_epc *epc, u8 func_no, u16 interrupts)
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 	u32 val, reg;
 	unsigned int func_offset = 0;
+	struct dw_pcie_ep_func *ep_func;
 
-	if (!ep->msix_cap)
+	ep_func = dw_pcie_ep_get_func_from_ep(ep, func_no);
+	if (!ep_func)
+		return -EINVAL;
+
+	if (!ep_func->msix_cap)
 		return -EINVAL;
 
 	func_offset = dw_pcie_ep_func_select(ep, func_no);
 
-	reg = ep->msix_cap + func_offset + PCI_MSIX_FLAGS;
+	reg = ep_func->msix_cap + func_offset + PCI_MSIX_FLAGS;
 	val = dw_pcie_readw_dbi(pci, reg);
 	val &= ~PCI_MSIX_FLAGS_QSIZE;
 	val |= interrupts;
@@ -404,6 +478,7 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
 			     u8 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+	struct dw_pcie_ep_func *ep_func;
 	struct pci_epc *epc = ep->epc;
 	unsigned int aligned_offset;
 	unsigned int func_offset = 0;
@@ -413,25 +488,29 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
 	bool has_upper;
 	int ret;
 
-	if (!ep->msi_cap)
+	ep_func = dw_pcie_ep_get_func_from_ep(ep, func_no);
+	if (!ep_func)
+		return -EINVAL;
+
+	if (!ep_func->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 + func_offset + PCI_MSI_FLAGS;
+	reg = ep_func->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 + func_offset + PCI_MSI_ADDRESS_LO;
+	reg = ep_func->msi_cap + func_offset + PCI_MSI_ADDRESS_LO;
 	msg_addr_lower = dw_pcie_readl_dbi(pci, reg);
 	if (has_upper) {
-		reg = ep->msi_cap + func_offset + PCI_MSI_ADDRESS_HI;
+		reg = ep_func->msi_cap + func_offset + PCI_MSI_ADDRESS_HI;
 		msg_addr_upper = dw_pcie_readl_dbi(pci, reg);
-		reg = ep->msi_cap + func_offset + PCI_MSI_DATA_64;
+		reg = ep_func->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 + func_offset + PCI_MSI_DATA_32;
+		reg = ep_func->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);
@@ -467,6 +546,7 @@ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
 			      u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+	struct dw_pcie_ep_func *ep_func;
 	struct pci_epc *epc = ep->epc;
 	u16 tbl_offset, bir;
 	unsigned int func_offset = 0;
@@ -477,9 +557,16 @@ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
 	void __iomem *msix_tbl;
 	int ret;
 
+	ep_func = dw_pcie_ep_get_func_from_ep(ep, func_no);
+	if (!ep_func)
+		return -EINVAL;
+
+	if (!ep_func->msix_cap)
+		return -EINVAL;
+
 	func_offset = dw_pcie_ep_func_select(ep, func_no);
 
-	reg = ep->msix_cap + func_offset + PCI_MSIX_TABLE;
+	reg = ep_func->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;
@@ -558,6 +645,7 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
 	int i;
 	int ret;
 	u32 reg;
+	u8 func_no;
 	void *addr;
 	unsigned int nbars;
 	unsigned int offset;
@@ -565,6 +653,9 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 	struct device *dev = pci->dev;
 	struct device_node *np = dev->of_node;
+	struct dw_pcie_ep_func *ep_func;
+
+	INIT_LIST_HEAD(&ep->func_list);
 
 	if (!pci->dbi_base || !pci->dbi_base2) {
 		dev_err(dev, "dbi_base/dbi_base2 is not populated\n");
@@ -624,9 +715,19 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
 	if (ret < 0)
 		epc->max_functions = 1;
 
-	ep->msi_cap = dw_pcie_find_capability(pci, PCI_CAP_ID_MSI);
+	for (func_no = 0; func_no < epc->max_functions; func_no++) {
+		ep_func = devm_kzalloc(dev, sizeof(*ep_func), GFP_KERNEL);
+		if (!ep_func)
+			return -ENOMEM;
 
-	ep->msix_cap = dw_pcie_find_capability(pci, PCI_CAP_ID_MSIX);
+		ep_func->func_no = func_no;
+		ep_func->msi_cap = dw_pcie_ep_find_capability(ep, func_no,
+							      PCI_CAP_ID_MSI);
+		ep_func->msix_cap = dw_pcie_ep_find_capability(ep, func_no,
+							       PCI_CAP_ID_MSIX);
+
+		list_add_tail(&ep_func->list, &ep->func_list);
+	}
 
 	if (ep->ops->ep_init)
 		ep->ops->ep_init(ep);
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 56789be..a57743c 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -221,8 +221,16 @@ struct dw_pcie_ep_ops {
 	unsigned int (*func_conf_select)(struct dw_pcie_ep *ep, u8 func_no);
 };
 
+struct dw_pcie_ep_func {
+	struct list_head	list;
+	u8			func_no;
+	u8			msi_cap;	/* MSI capability offset */
+	u8			msix_cap;	/* MSI-X capability offset */
+};
+
 struct dw_pcie_ep {
 	struct pci_epc		*epc;
+	struct list_head	func_list;
 	const struct dw_pcie_ep_ops *ops;
 	phys_addr_t		phys_base;
 	size_t			addr_size;
@@ -235,8 +243,6 @@ struct dw_pcie_ep {
 	u32			num_ob_windows;
 	void __iomem		*msi_mem;
 	phys_addr_t		msi_mem_phys;
-	u8			msi_cap;	/* MSI capability offset */
-	u8			msix_cap;	/* MSI-X capability offset */
 };
 
 struct dw_pcie_ops {
@@ -425,6 +431,8 @@ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
 int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep, u8 func_no,
 				       u16 interrupt_num);
 void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar);
+struct dw_pcie_ep_func *
+dw_pcie_ep_get_func_from_ep(struct dw_pcie_ep *ep, u8 func_no);
 #else
 static inline void dw_pcie_ep_linkup(struct dw_pcie_ep *ep)
 {
@@ -466,5 +474,11 @@ static inline int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep,
 static inline void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar)
 {
 }
+
+struct dw_pcie_ep_func *
+dw_pcie_ep_get_func_from_ep(struct dw_pcie_ep *ep, u8 func_no)
+{
+	return NULL;
+}
 #endif
 #endif /* _PCIE_DESIGNWARE_H */
-- 
2.9.5

[PATCH v4 05/11] dt-bindings: pci: layerscape-pci: Add compatible strings for ls1088a and ls2088a

[Xiaowei Bao]

Add compatible strings for ls1088a and ls2088a.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
---
v2:
 - No change.
v3:
 - Use one valid combination of compatible strings.
v4:
 - Add the comma between the two compatible.

 Documentation/devicetree/bindings/pci/layerscape-pci.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/layerscape-pci.txt b/Documentation/devicetree/bindings/pci/layerscape-pci.txt
index e20ceaa..3717e3d 100644
--- a/Documentation/devicetree/bindings/pci/layerscape-pci.txt
+++ b/Documentation/devicetree/bindings/pci/layerscape-pci.txt
@@ -23,6 +23,8 @@ Required properties:
         "fsl,ls1012a-pcie"
   EP mode:
 	"fsl,ls1046a-pcie-ep", "fsl,ls-pcie-ep"
+	"fsl,ls1088a-pcie-ep", "fsl,ls-pcie-ep"
+	"fsl,ls2088a-pcie-ep", "fsl,ls-pcie-ep"
 - reg: base addresses and lengths of the PCIe controller register blocks.
 - interrupts: A list of interrupt outputs of the controller. Must contain an
   entry for each entry in the interrupt-names property.
-- 
2.9.5

[PATCH v4 06/11] PCI: layerscape: Fix some format issue of the code

[Xiaowei Bao]

Fix some format issue of the code in EP driver.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
---
v2:
 - No change.
v3:
 - No change.
v4:
 - No change.

 drivers/pci/controller/dwc/pci-layerscape-ep.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index ca9aa45..a9c552e 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -63,7 +63,7 @@ static void ls_pcie_ep_init(struct dw_pcie_ep *ep)
 }
 
 static int ls_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
-				  enum pci_epc_irq_type type, u16 interrupt_num)
+				enum pci_epc_irq_type type, u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 
@@ -87,7 +87,7 @@ static const struct dw_pcie_ep_ops pcie_ep_ops = {
 };
 
 static int __init ls_add_pcie_ep(struct ls_pcie_ep *pcie,
-					struct platform_device *pdev)
+				 struct platform_device *pdev)
 {
 	struct dw_pcie *pci = pcie->pci;
 	struct device *dev = pci->dev;
-- 
2.9.5

[PATCH v4 07/11] PCI: layerscape: Modify the way of getting capability with different PEX

[Xiaowei Bao]

The different PCIe controller in one board may be have different
capability of MSI or MSIX, so change the way of getting the MSI
capability, make it more flexible.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
---
v2:
 - Remove the repeated assignment code.
v3:
 - Use ep_func msi_cap and msix_cap to decide the msi_capable and
   msix_capable of pci_epc_features struct.
v4:
 - No change.

 drivers/pci/controller/dwc/pci-layerscape-ep.c | 31 +++++++++++++++++++-------
 1 file changed, 23 insertions(+), 8 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index a9c552e..1e07287 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -22,6 +22,7 @@
 
 struct ls_pcie_ep {
 	struct dw_pcie		*pci;
+	struct pci_epc_features	*ls_epc;
 };
 
 #define to_ls_pcie_ep(x)	dev_get_drvdata((x)->dev)
@@ -40,26 +41,31 @@ static const struct of_device_id ls_pcie_ep_of_match[] = {
 	{ },
 };
 
-static const struct pci_epc_features ls_pcie_epc_features = {
-	.linkup_notifier = false,
-	.msi_capable = true,
-	.msix_capable = false,
-	.bar_fixed_64bit = (1 << BAR_2) | (1 << BAR_4),
-};
-
 static const struct pci_epc_features*
 ls_pcie_ep_get_features(struct dw_pcie_ep *ep)
 {
-	return &ls_pcie_epc_features;
+	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+	struct ls_pcie_ep *pcie = to_ls_pcie_ep(pci);
+
+	return pcie->ls_epc;
 }
 
 static void ls_pcie_ep_init(struct dw_pcie_ep *ep)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+	struct ls_pcie_ep *pcie = to_ls_pcie_ep(pci);
+	struct dw_pcie_ep_func *ep_func;
 	enum pci_barno bar;
 
+	ep_func = dw_pcie_ep_get_func_from_ep(ep, 0);
+	if (!ep_func)
+		return;
+
 	for (bar = BAR_0; bar <= BAR_5; bar++)
 		dw_pcie_ep_reset_bar(pci, bar);
+
+	pcie->ls_epc->msi_capable = ep_func->msi_cap ? true : false;
+	pcie->ls_epc->msix_capable = ep_func->msix_cap ? true : false;
 }
 
 static int ls_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
@@ -119,6 +125,7 @@ static int __init ls_pcie_ep_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct dw_pcie *pci;
 	struct ls_pcie_ep *pcie;
+	struct pci_epc_features *ls_epc;
 	struct resource *dbi_base;
 	int ret;
 
@@ -130,6 +137,10 @@ static int __init ls_pcie_ep_probe(struct platform_device *pdev)
 	if (!pci)
 		return -ENOMEM;
 
+	ls_epc = devm_kzalloc(dev, sizeof(*ls_epc), GFP_KERNEL);
+	if (!ls_epc)
+		return -ENOMEM;
+
 	dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
 	pci->dbi_base = devm_pci_remap_cfg_resource(dev, dbi_base);
 	if (IS_ERR(pci->dbi_base))
@@ -140,6 +151,10 @@ static int __init ls_pcie_ep_probe(struct platform_device *pdev)
 	pci->ops = &ls_pcie_ep_ops;
 	pcie->pci = pci;
 
+	ls_epc->bar_fixed_64bit = (1 << BAR_2) | (1 << BAR_4),
+
+	pcie->ls_epc = ls_epc;
+
 	platform_set_drvdata(pdev, pcie);
 
 	ret = ls_add_pcie_ep(pcie, pdev);
-- 
2.9.5

[PATCH v4 08/11] PCI: layerscape: Modify the MSIX to the doorbell mode

[Xiaowei Bao]

dw_pcie_ep_raise_msix_irq was never called in the exisitng driver
before, because the ls1046a platform don't support the MSIX feature
and msix_capable was always set to false.
Now that add the ls1088a platform with MSIX support, but the existing
dw_pcie_ep_raise_msix_irq doesn't work, so use the doorbell method to
support the MSIX feature.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
---
v2: 
 - No change
v3:
 - Modify the commit message make it clearly.
v4: 
 - No change

 drivers/pci/controller/dwc/pci-layerscape-ep.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index 1e07287..5f0cb99 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -79,7 +79,8 @@ static int ls_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
 	case PCI_EPC_IRQ_MSI:
 		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
 	case PCI_EPC_IRQ_MSIX:
-		return dw_pcie_ep_raise_msix_irq(ep, func_no, interrupt_num);
+		return dw_pcie_ep_raise_msix_irq_doorbell(ep, func_no,
+							  interrupt_num);
 	default:
 		dev_err(pci->dev, "UNKNOWN IRQ type\n");
 		return -EINVAL;
-- 
2.9.5

[PATCH v4 09/11] PCI: layerscape: Add EP mode support for ls1088a and ls2088a

[Xiaowei Bao]

Add PCIe EP mode support for ls1088a and ls2088a, there are some
difference between LS1 and LS2 platform, so refactor the code of
the EP driver.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
---
v2: 
 - This is a new patch for supporting the ls1088a and ls2088a platform.
v3:
 - Adjust the some struct assignment order in probe function.
v4:
 - No change.

 drivers/pci/controller/dwc/pci-layerscape-ep.c | 72 +++++++++++++++++++-------
 1 file changed, 53 insertions(+), 19 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index 5f0cb99..723bbe5 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -20,27 +20,29 @@
 
 #define PCIE_DBI2_OFFSET		0x1000	/* DBI2 base address*/
 
-struct ls_pcie_ep {
-	struct dw_pcie		*pci;
-	struct pci_epc_features	*ls_epc;
+#define to_ls_pcie_ep(x)	dev_get_drvdata((x)->dev)
+
+struct ls_pcie_ep_drvdata {
+	u32				func_offset;
+	const struct dw_pcie_ep_ops	*ops;
+	const struct dw_pcie_ops	*dw_pcie_ops;
 };
 
-#define to_ls_pcie_ep(x)	dev_get_drvdata((x)->dev)
+struct ls_pcie_ep {
+	struct dw_pcie			*pci;
+	struct pci_epc_features		*ls_epc;
+	const struct ls_pcie_ep_drvdata *drvdata;
+};
 
 static int ls_pcie_establish_link(struct dw_pcie *pci)
 {
 	return 0;
 }
 
-static const struct dw_pcie_ops ls_pcie_ep_ops = {
+static const struct dw_pcie_ops dw_ls_pcie_ep_ops = {
 	.start_link = ls_pcie_establish_link,
 };
 
-static const struct of_device_id ls_pcie_ep_of_match[] = {
-	{ .compatible = "fsl,ls-pcie-ep",},
-	{ },
-};
-
 static const struct pci_epc_features*
 ls_pcie_ep_get_features(struct dw_pcie_ep *ep)
 {
@@ -87,10 +89,39 @@ static int ls_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
 	}
 }
 
-static const struct dw_pcie_ep_ops pcie_ep_ops = {
+static unsigned int ls_pcie_ep_func_conf_select(struct dw_pcie_ep *ep,
+						u8 func_no)
+{
+	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+	struct ls_pcie_ep *pcie = to_ls_pcie_ep(pci);
+
+	WARN_ON(func_no && !pcie->drvdata->func_offset);
+	return pcie->drvdata->func_offset * func_no;
+}
+
+static const struct dw_pcie_ep_ops ls_pcie_ep_ops = {
 	.ep_init = ls_pcie_ep_init,
 	.raise_irq = ls_pcie_ep_raise_irq,
 	.get_features = ls_pcie_ep_get_features,
+	.func_conf_select = ls_pcie_ep_func_conf_select,
+};
+
+static const struct ls_pcie_ep_drvdata ls1_ep_drvdata = {
+	.ops = &ls_pcie_ep_ops,
+	.dw_pcie_ops = &dw_ls_pcie_ep_ops,
+};
+
+static const struct ls_pcie_ep_drvdata ls2_ep_drvdata = {
+	.func_offset = 0x20000,
+	.ops = &ls_pcie_ep_ops,
+	.dw_pcie_ops = &dw_ls_pcie_ep_ops,
+};
+
+static const struct of_device_id ls_pcie_ep_of_match[] = {
+	{ .compatible = "fsl,ls1046a-pcie-ep", .data = &ls1_ep_drvdata },
+	{ .compatible = "fsl,ls1088a-pcie-ep", .data = &ls2_ep_drvdata },
+	{ .compatible = "fsl,ls2088a-pcie-ep", .data = &ls2_ep_drvdata },
+	{ },
 };
 
 static int __init ls_add_pcie_ep(struct ls_pcie_ep *pcie,
@@ -103,7 +134,7 @@ static int __init ls_add_pcie_ep(struct ls_pcie_ep *pcie,
 	int ret;
 
 	ep = &pci->ep;
-	ep->ops = &pcie_ep_ops;
+	ep->ops = pcie->drvdata->ops;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "addr_space");
 	if (!res)
@@ -142,20 +173,23 @@ static int __init ls_pcie_ep_probe(struct platform_device *pdev)
 	if (!ls_epc)
 		return -ENOMEM;
 
-	dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
-	pci->dbi_base = devm_pci_remap_cfg_resource(dev, dbi_base);
-	if (IS_ERR(pci->dbi_base))
-		return PTR_ERR(pci->dbi_base);
+	pcie->drvdata = of_device_get_match_data(dev);
 
-	pci->dbi_base2 = pci->dbi_base + PCIE_DBI2_OFFSET;
 	pci->dev = dev;
-	pci->ops = &ls_pcie_ep_ops;
-	pcie->pci = pci;
+	pci->ops = pcie->drvdata->dw_pcie_ops;
 
 	ls_epc->bar_fixed_64bit = (1 << BAR_2) | (1 << BAR_4),
 
+	pcie->pci = pci;
 	pcie->ls_epc = ls_epc;
 
+	dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
+	pci->dbi_base = devm_pci_remap_cfg_resource(dev, dbi_base);
+	if (IS_ERR(pci->dbi_base))
+		return PTR_ERR(pci->dbi_base);
+
+	pci->dbi_base2 = pci->dbi_base + PCIE_DBI2_OFFSET;
+
 	platform_set_drvdata(pdev, pcie);
 
 	ret = ls_add_pcie_ep(pcie, pdev);
-- 
2.9.5

[PATCH v4 10/11] arm64: dts: layerscape: Add PCIe EP node for ls1088a

[Xiaowei Bao]

Add PCIe EP node for ls1088a to support EP mode.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
---
v2:
 - Remove the pf-offset proparty.
v3:
 - No change.
v4:
 - No change.
 
 arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi | 31 ++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
index c676d07..da246ab 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
@@ -483,6 +483,17 @@
 			status = "disabled";
 		};
 
+		pcie_ep@3400000 {
+			compatible = "fsl,ls1088a-pcie-ep","fsl,ls-pcie-ep";
+			reg = <0x00 0x03400000 0x0 0x00100000
+			       0x20 0x00000000 0x8 0x00000000>;
+			reg-names = "regs", "addr_space";
+			num-ib-windows = <24>;
+			num-ob-windows = <128>;
+			max-functions = /bits/ 8 <2>;
+			status = "disabled";
+		};
+
 		pcie@3500000 {
 			compatible = "fsl,ls1088a-pcie";
 			reg = <0x00 0x03500000 0x0 0x00100000   /* controller registers */
@@ -508,6 +519,16 @@
 			status = "disabled";
 		};
 
+		pcie_ep@3500000 {
+			compatible = "fsl,ls1088a-pcie-ep","fsl,ls-pcie-ep";
+			reg = <0x00 0x03500000 0x0 0x00100000
+			       0x28 0x00000000 0x8 0x00000000>;
+			reg-names = "regs", "addr_space";
+			num-ib-windows = <6>;
+			num-ob-windows = <8>;
+			status = "disabled";
+		};
+
 		pcie@3600000 {
 			compatible = "fsl,ls1088a-pcie";
 			reg = <0x00 0x03600000 0x0 0x00100000   /* controller registers */
@@ -533,6 +554,16 @@
 			status = "disabled";
 		};
 
+		pcie_ep@3600000 {
+			compatible = "fsl,ls1088a-pcie-ep","fsl,ls-pcie-ep";
+			reg = <0x00 0x03600000 0x0 0x00100000
+			       0x30 0x00000000 0x8 0x00000000>;
+			reg-names = "regs", "addr_space";
+			num-ib-windows = <6>;
+			num-ob-windows = <8>;
+			status = "disabled";
+		};
+
 		smmu: iommu@5000000 {
 			compatible = "arm,mmu-500";
 			reg = <0 0x5000000 0 0x800000>;
-- 
2.9.5

[PATCH v4 11/11] misc: pci_endpoint_test: Add LS1088a in pci_device_id table

[Xiaowei Bao]

Add LS1088a in pci_device_id table so that pci-epf-test can be used
for testing PCIe EP in LS1088a.

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
---
v2:
 - No change.
v3:
 - No change.
v4:
 - Use a maco to define the LS1088a device ID.
 
 drivers/misc/pci_endpoint_test.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
index 6e208a0..8c222a6 100644
--- a/drivers/misc/pci_endpoint_test.c
+++ b/drivers/misc/pci_endpoint_test.c
@@ -65,6 +65,7 @@
 #define PCI_ENDPOINT_TEST_IRQ_NUMBER		0x28
 
 #define PCI_DEVICE_ID_TI_AM654			0xb00c
+#define PCI_DEVICE_ID_LS1088A			0x80c0
 
 #define is_am654_pci_dev(pdev)		\
 		((pdev)->device == PCI_DEVICE_ID_TI_AM654)
@@ -793,6 +794,7 @@ static const struct pci_device_id pci_endpoint_test_tbl[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA74x) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA72x) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, 0x81c0) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, PCI_DEVICE_ID_LS1088A) },
 	{ PCI_DEVICE_DATA(SYNOPSYS, EDDA, NULL) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_AM654),
 	  .driver_data = (kernel_ulong_t)&am654_data
-- 
2.9.5

RE: [PATCH v4 01/11] PCI: designware-ep: Add multiple PFs support for DWC

[Gustavo Pimentel]

On Tue, Sep 24, 2019 at 3:18:39, Xiaowei Bao <xiaowei.bao@nxp.com> wrote:

> 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.
> 
> Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
> ---
> 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.
> v4:
>  - Correct the commit message.
> 
>  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);
> -- 
> 2.9.5


Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>

Re: [PATCH v4 05/11] dt-bindings: pci: layerscape-pci: Add compatible strings for ls1088a and ls2088a

[Rob Herring]

On Tue, 24 Sep 2019 10:18:43 +0800, Xiaowei Bao wrote:
> Add compatible strings for ls1088a and ls2088a.
> 
> Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
> ---
> v2:
>  - No change.
> v3:
>  - Use one valid combination of compatible strings.
> v4:
>  - Add the comma between the two compatible.
> 
>  Documentation/devicetree/bindings/pci/layerscape-pci.txt | 2 ++
>  1 file changed, 2 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

Re: [PATCH v4 10/11] arm64: dts: layerscape: Add PCIe EP node for ls1088a

[Andrew Murray]

On Tue, Sep 24, 2019 at 10:18:48AM +0800, Xiaowei Bao wrote:
> Add PCIe EP node for ls1088a to support EP mode.
> 
> Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>

Reviewed-by: Andrew Murray <andrew.murray@arm.com>

> ---
> v2:
>  - Remove the pf-offset proparty.
> v3:
>  - No change.
> v4:
>  - No change.
>  
>  arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi | 31 ++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> index c676d07..da246ab 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> @@ -483,6 +483,17 @@
>  			status = "disabled";
>  		};
>  
> +		pcie_ep@3400000 {
> +			compatible = "fsl,ls1088a-pcie-ep","fsl,ls-pcie-ep";
> +			reg = <0x00 0x03400000 0x0 0x00100000
> +			       0x20 0x00000000 0x8 0x00000000>;
> +			reg-names = "regs", "addr_space";
> +			num-ib-windows = <24>;
> +			num-ob-windows = <128>;
> +			max-functions = /bits/ 8 <2>;
> +			status = "disabled";
> +		};
> +
>  		pcie@3500000 {
>  			compatible = "fsl,ls1088a-pcie";
>  			reg = <0x00 0x03500000 0x0 0x00100000   /* controller registers */
> @@ -508,6 +519,16 @@
>  			status = "disabled";
>  		};
>  
> +		pcie_ep@3500000 {
> +			compatible = "fsl,ls1088a-pcie-ep","fsl,ls-pcie-ep";
> +			reg = <0x00 0x03500000 0x0 0x00100000
> +			       0x28 0x00000000 0x8 0x00000000>;
> +			reg-names = "regs", "addr_space";
> +			num-ib-windows = <6>;
> +			num-ob-windows = <8>;
> +			status = "disabled";
> +		};
> +
>  		pcie@3600000 {
>  			compatible = "fsl,ls1088a-pcie";
>  			reg = <0x00 0x03600000 0x0 0x00100000   /* controller registers */
> @@ -533,6 +554,16 @@
>  			status = "disabled";
>  		};
>  
> +		pcie_ep@3600000 {
> +			compatible = "fsl,ls1088a-pcie-ep","fsl,ls-pcie-ep";
> +			reg = <0x00 0x03600000 0x0 0x00100000
> +			       0x30 0x00000000 0x8 0x00000000>;
> +			reg-names = "regs", "addr_space";
> +			num-ib-windows = <6>;
> +			num-ob-windows = <8>;
> +			status = "disabled";
> +		};
> +
>  		smmu: iommu@5000000 {
>  			compatible = "arm,mmu-500";
>  			reg = <0 0x5000000 0 0x800000>;
> -- 
> 2.9.5
> 

Re: [PATCH v4 11/11] misc: pci_endpoint_test: Add LS1088a in pci_device_id table

[Andrew Murray]

On Tue, Sep 24, 2019 at 10:18:49AM +0800, Xiaowei Bao wrote:
> Add LS1088a in pci_device_id table so that pci-epf-test can be used
> for testing PCIe EP in LS1088a.
> 
> Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
> ---
> v2:
>  - No change.
> v3:
>  - No change.
> v4:
>  - Use a maco to define the LS1088a device ID.
>  
>  drivers/misc/pci_endpoint_test.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
> index 6e208a0..8c222a6 100644
> --- a/drivers/misc/pci_endpoint_test.c
> +++ b/drivers/misc/pci_endpoint_test.c
> @@ -65,6 +65,7 @@
>  #define PCI_ENDPOINT_TEST_IRQ_NUMBER		0x28
>  
>  #define PCI_DEVICE_ID_TI_AM654			0xb00c
> +#define PCI_DEVICE_ID_LS1088A			0x80c0

Reviewed-by: Andrew Murray <andrew.murray@arm.com>

>  
>  #define is_am654_pci_dev(pdev)		\
>  		((pdev)->device == PCI_DEVICE_ID_TI_AM654)
> @@ -793,6 +794,7 @@ static const struct pci_device_id pci_endpoint_test_tbl[] = {
>  	{ PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA74x) },
>  	{ PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA72x) },
>  	{ PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, 0x81c0) },
> +	{ PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, PCI_DEVICE_ID_LS1088A) },
>  	{ PCI_DEVICE_DATA(SYNOPSYS, EDDA, NULL) },
>  	{ PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_AM654),
>  	  .driver_data = (kernel_ulong_t)&am654_data
> -- 
> 2.9.5
> 

RE: [PATCH v4 11/11] misc: pci_endpoint_test: Add LS1088a in pci_device_id table

[Xiaowei Bao]

> -----Original Message-----
> From: Andrew Murray <andrew.murray@arm.com>
> Sent: 2019年9月30日 22:57
> To: Xiaowei Bao <xiaowei.bao@nxp.com>
> Cc: robh+dt@kernel.org; mark.rutland@arm.com; shawnguo@kernel.org; Leo
> Li <leoyang.li@nxp.com>; kishon@ti.com; lorenzo.pieralisi@arm.com; M.h.
> Lian <minghuan.lian@nxp.com>; Mingkai Hu <mingkai.hu@nxp.com>; Roy
> Zang <roy.zang@nxp.com>; jingoohan1@gmail.com;
> gustavo.pimentel@synopsys.com; linux-pci@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; devicetree@vger.kernel.org;
> linux-kernel@vger.kernel.org; linuxppc-dev@lists.ozlabs.org
> Subject: Re: [PATCH v4 11/11] misc: pci_endpoint_test: Add LS1088a in
> pci_device_id table
> 
> On Tue, Sep 24, 2019 at 10:18:49AM +0800, Xiaowei Bao wrote:
> > Add LS1088a in pci_device_id table so that pci-epf-test can be used
> > for testing PCIe EP in LS1088a.
> >
> > Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
> > ---
> > v2:
> >  - No change.
> > v3:
> >  - No change.
> > v4:
> >  - Use a maco to define the LS1088a device ID.
> >
> >  drivers/misc/pci_endpoint_test.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/misc/pci_endpoint_test.c
> > b/drivers/misc/pci_endpoint_test.c
> > index 6e208a0..8c222a6 100644
> > --- a/drivers/misc/pci_endpoint_test.c
> > +++ b/drivers/misc/pci_endpoint_test.c
> > @@ -65,6 +65,7 @@
> >  #define PCI_ENDPOINT_TEST_IRQ_NUMBER		0x28
> >
> >  #define PCI_DEVICE_ID_TI_AM654			0xb00c
> > +#define PCI_DEVICE_ID_LS1088A			0x80c0
> 
> Reviewed-by: Andrew Murray <andrew.murray@arm.com>

Thanks Andrew.

> 
> >
> >  #define is_am654_pci_dev(pdev)		\
> >  		((pdev)->device == PCI_DEVICE_ID_TI_AM654) @@ -793,6 +794,7
> @@
> > static const struct pci_device_id pci_endpoint_test_tbl[] = {
> >  	{ PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA74x) },
> >  	{ PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA72x) },
> >  	{ PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, 0x81c0) },
> > +	{ PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, PCI_DEVICE_ID_LS1088A) },
> >  	{ PCI_DEVICE_DATA(SYNOPSYS, EDDA, NULL) },
> >  	{ PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_AM654),
> >  	  .driver_data = (kernel_ulong_t)&am654_data
> > --
> > 2.9.5
> >

Re: [PATCH v4 00/11] Add the multiple PF support for DWC and Layerscape

[Lorenzo Pieralisi]

On Tue, Sep 24, 2019 at 10:18:38AM +0800, Xiaowei Bao wrote:
> Add the PCIe EP multiple PF support for DWC and Layerscape, add
> the doorbell MSIX function for DWC, use list to manage the PF of
> one PCIe controller, and refactor the Layerscape EP driver due to
> some platforms difference.
> 
> Xiaowei Bao (11):
>   PCI: designware-ep: Add multiple PFs support for DWC
>   PCI: designware-ep: Add the doorbell mode of MSI-X in EP mode
>   PCI: designware-ep: Move the function of getting MSI capability
>     forward
>   PCI: designware-ep: Modify MSI and MSIX CAP way of finding
>   dt-bindings: pci: layerscape-pci: add compatible strings for ls1088a
>     and ls2088a
>   PCI: layerscape: Fix some format issue of the code
>   PCI: layerscape: Modify the way of getting capability with different
>     PEX
>   PCI: layerscape: Modify the MSIX to the doorbell mode
>   PCI: layerscape: Add EP mode support for ls1088a and ls2088a
>   arm64: dts: layerscape: Add PCIe EP node for ls1088a
>   misc: pci_endpoint_test: Add LS1088a in pci_device_id table
> 
>  .../devicetree/bindings/pci/layerscape-pci.txt     |   2 +
>  arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi     |  31 +++
>  drivers/misc/pci_endpoint_test.c                   |   2 +
>  drivers/pci/controller/dwc/pci-layerscape-ep.c     | 100 ++++++--
>  drivers/pci/controller/dwc/pcie-designware-ep.c    | 255 +++++++++++++++++----
>  drivers/pci/controller/dwc/pcie-designware.c       |  59 +++--
>  drivers/pci/controller/dwc/pcie-designware.h       |  48 +++-
>  7 files changed, 404 insertions(+), 93 deletions(-)

Hi,

are you resending this patchset ? I would also like Andrew and Kishon to
have a look and ACK relevant code before merging it.

Thanks,
Lorenzo

Re: [PATCH v4 08/11] PCI: layerscape: Modify the MSIX to the doorbell mode

[Kishon Vijay Abraham I]

Hi Xiaowei,

On 24/09/19 7:48 am, Xiaowei Bao wrote:
> dw_pcie_ep_raise_msix_irq was never called in the exisitng driver
> before, because the ls1046a platform don't support the MSIX feature
> and msix_capable was always set to false.
> Now that add the ls1088a platform with MSIX support, but the existing
> dw_pcie_ep_raise_msix_irq doesn't work, so use the doorbell method to
> support the MSIX feature.


It does work after [1]. So the commit message might not be exactly true.

[1] -> https://lore.kernel.org/r/20200225081703.8857-1-kishon@ti.com

Thanks
Kishon

> 
> Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
> Reviewed-by: Andrew Murray <andrew.murray@arm.com>
> ---
> v2: 
>  - No change
> v3:
>  - Modify the commit message make it clearly.
> v4: 
>  - No change
> 
>  drivers/pci/controller/dwc/pci-layerscape-ep.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> index 1e07287..5f0cb99 100644
> --- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> +++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> @@ -79,7 +79,8 @@ static int ls_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
>  	case PCI_EPC_IRQ_MSI:
>  		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
>  	case PCI_EPC_IRQ_MSIX:
> -		return dw_pcie_ep_raise_msix_irq(ep, func_no, interrupt_num);
> +		return dw_pcie_ep_raise_msix_irq_doorbell(ep, func_no,
> +							  interrupt_num);
>  	default:
>  		dev_err(pci->dev, "UNKNOWN IRQ type\n");
>  		return -EINVAL;
> 

RE: [PATCH v4 08/11] PCI: layerscape: Modify the MSIX to the doorbell mode

[Xiaowei Bao]

> -----Original Message-----
> From: Kishon Vijay Abraham I <kishon@ti.com>
> Sent: 2020年2月28日 19:41
> To: Xiaowei Bao <xiaowei.bao@nxp.com>; robh+dt@kernel.org;
> mark.rutland@arm.com; shawnguo@kernel.org; Leo Li
> <leoyang.li@nxp.com>; lorenzo.pieralisi@arm.com; M.h. Lian
> <minghuan.lian@nxp.com>; Mingkai Hu <mingkai.hu@nxp.com>; Roy Zang
> <roy.zang@nxp.com>; jingoohan1@gmail.com;
> gustavo.pimentel@synopsys.com; andrew.murray@arm.com;
> linux-pci@vger.kernel.org; linux-arm-kernel@lists.infradead.org;
> devicetree@vger.kernel.org; linux-kernel@vger.kernel.org;
> linuxppc-dev@lists.ozlabs.org
> Subject: Re: [PATCH v4 08/11] PCI: layerscape: Modify the MSIX to the
> doorbell mode
> 
> Hi Xiaowei,
> 
> On 24/09/19 7:48 am, Xiaowei Bao wrote:
> > dw_pcie_ep_raise_msix_irq was never called in the exisitng driver
> > before, because the ls1046a platform don't support the MSIX feature
> > and msix_capable was always set to false.
> > Now that add the ls1088a platform with MSIX support, but the existing
> > dw_pcie_ep_raise_msix_irq doesn't work, so use the doorbell method to
> > support the MSIX feature.
> 
> 
> It does work after [1]. So the commit message might not be exactly true.

Got it, I will verify it with your patch, do you mean that I should correct the commit 
message? I think we can reserve my MSI-X patch, this patch can provide another 
MSI-X trigger way, and this way is clearly stated in the DWC manual, thanks, please
give your comments.

Thanks
Xiaowei

> 
> [1] ->
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.ke
> rnel.org%2Fr%2F20200225081703.8857-1-kishon%40ti.com&amp;data=02%
> 7C01%7Cxiaowei.bao%40nxp.com%7C84191df0cd09451ef3e608d7bc427745
> %7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C637184865969684
> 169&amp;sdata=K9fvbpQ4xuuZKhWT6UV2M4SVyHxQ3LjpuJQztktLaRI%3D&
> amp;reserved=0
> 
> Thanks
> Kishon
> 
> >
> > Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
> > Reviewed-by: Andrew Murray <andrew.murray@arm.com>
> > ---
> > v2:
> >  - No change
> > v3:
> >  - Modify the commit message make it clearly.
> > v4:
> >  - No change
> >
> >  drivers/pci/controller/dwc/pci-layerscape-ep.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > index 1e07287..5f0cb99 100644
> > --- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > +++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > @@ -79,7 +79,8 @@ static int ls_pcie_ep_raise_irq(struct dw_pcie_ep *ep,
> u8 func_no,
> >  	case PCI_EPC_IRQ_MSI:
> >  		return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
> >  	case PCI_EPC_IRQ_MSIX:
> > -		return dw_pcie_ep_raise_msix_irq(ep, func_no, interrupt_num);
> > +		return dw_pcie_ep_raise_msix_irq_doorbell(ep, func_no,
> > +							  interrupt_num);
> >  	default:
> >  		dev_err(pci->dev, "UNKNOWN IRQ type\n");
> >  		return -EINVAL;
> >

RE: [PATCH v4 00/11] Add the multiple PF support for DWC and Layerscape

[Xiaowei Bao]

> -----Original Message-----
> From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> Sent: 2020年2月28日 19:30
> To: Xiaowei Bao <xiaowei.bao@nxp.com>
> Cc: robh+dt@kernel.org; mark.rutland@arm.com; shawnguo@kernel.org; Leo
> Li <leoyang.li@nxp.com>; kishon@ti.com; M.h. Lian
> <minghuan.lian@nxp.com>; Mingkai Hu <mingkai.hu@nxp.com>; Roy Zang
> <roy.zang@nxp.com>; jingoohan1@gmail.com;
> gustavo.pimentel@synopsys.com; linux-pci@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; devicetree@vger.kernel.org;
> linux-kernel@vger.kernel.org; linuxppc-dev@lists.ozlabs.org; Andrew Murray
> <amurray@thegoodpenguin.co.uk>
> Subject: Re: [PATCH v4 00/11] Add the multiple PF support for DWC and
> Layerscape
> 
> On Tue, Sep 24, 2019 at 10:18:38AM +0800, Xiaowei Bao wrote:
> > Add the PCIe EP multiple PF support for DWC and Layerscape, add the
> > doorbell MSIX function for DWC, use list to manage the PF of one PCIe
> > controller, and refactor the Layerscape EP driver due to some
> > platforms difference.
> >
> > Xiaowei Bao (11):
> >   PCI: designware-ep: Add multiple PFs support for DWC
> >   PCI: designware-ep: Add the doorbell mode of MSI-X in EP mode
> >   PCI: designware-ep: Move the function of getting MSI capability
> >     forward
> >   PCI: designware-ep: Modify MSI and MSIX CAP way of finding
> >   dt-bindings: pci: layerscape-pci: add compatible strings for ls1088a
> >     and ls2088a
> >   PCI: layerscape: Fix some format issue of the code
> >   PCI: layerscape: Modify the way of getting capability with different
> >     PEX
> >   PCI: layerscape: Modify the MSIX to the doorbell mode
> >   PCI: layerscape: Add EP mode support for ls1088a and ls2088a
> >   arm64: dts: layerscape: Add PCIe EP node for ls1088a
> >   misc: pci_endpoint_test: Add LS1088a in pci_device_id table
> >
> >  .../devicetree/bindings/pci/layerscape-pci.txt     |   2 +
> >  arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi     |  31 +++
> >  drivers/misc/pci_endpoint_test.c                   |   2 +
> >  drivers/pci/controller/dwc/pci-layerscape-ep.c     | 100 ++++++--
> >  drivers/pci/controller/dwc/pcie-designware-ep.c    | 255
> +++++++++++++++++----
> >  drivers/pci/controller/dwc/pcie-designware.c       |  59 +++--
> >  drivers/pci/controller/dwc/pcie-designware.h       |  48 +++-
> >  7 files changed, 404 insertions(+), 93 deletions(-)
> 
> Hi,
> 
> are you resending this patchset ? I would also like Andrew and Kishon to have
> a look and ACK relevant code before merging it.

Thank you for following these patches, I have replay the email to Kishon, and I will
decide whether to resend the sets patches based on his comments.

Thanks 
Xiaowei
 
> Thanks,
> Lorenzo

[PATCH v4 00/11] Add the multiple PF support for DWC and Layerscape

[Xiaowei Bao]

Add the PCIe EP multiple PF support for DWC and Layerscape, add
the doorbell MSIX function for DWC, use list to manage the PF of
one PCIe controller, and refactor the Layerscape EP driver due to
some platforms difference.

Xiaowei Bao (11):
  PCI: designware-ep: Add multiple PFs support for DWC
  PCI: designware-ep: Add the doorbell mode of MSI-X in EP mode
  PCI: designware-ep: Move the function of getting MSI capability
    forward
  PCI: designware-ep: Modify MSI and MSIX CAP way of finding
  dt-bindings: pci: layerscape-pci: Add compatible strings for ls1088a
    and ls2088a
  PCI: layerscape: Fix some format issue of the code
  PCI: layerscape: Modify the way of getting capability with different
    PEX
  PCI: layerscape: Modify the MSIX to the doorbell mode
  PCI: layerscape: Add EP mode support for ls1088a and ls2088a
  arm64: dts: layerscape: Add PCIe EP node for ls1088a
  misc: pci_endpoint_test: Add LS1088a in pci_device_id table

 .../devicetree/bindings/pci/layerscape-pci.txt     |   2 +
 arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi     |  31 +++
 drivers/misc/pci_endpoint_test.c                   |   2 +
 drivers/pci/controller/dwc/pci-layerscape-ep.c     | 100 ++++++--
 drivers/pci/controller/dwc/pcie-designware-ep.c    | 255 +++++++++++++++++----
 drivers/pci/controller/dwc/pcie-designware.c       |  59 +++--
 drivers/pci/controller/dwc/pcie-designware.h       |  48 +++-
 7 files changed, 404 insertions(+), 93 deletions(-)

-- 
2.9.5