From: Minghuan Lian <minghuan.l...@nxp.com>
There are more than five kinds of Layerscape SoCs. unfortunately,
PCIe controller of each SoC is a little bit different. In order
to avoid too many macro definitions, the patch addes a new
implementation of PCIe driver based on DM. PCIe dts node is
used to describe the difference.
Signed-off-by: Minghuan Lian <minghuan.l...@nxp.com>
Signed-off-by: Hou Zhiqiang <zhiqiang....@nxp.com>
---
V3:
- No change
drivers/pci/Kconfig | 8 +
drivers/pci/pcie_layerscape.c | 761 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 769 insertions(+)
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index b8376b4..07d21ea 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -61,4 +61,12 @@ config PCI_XILINX
Enable support for the Xilinx AXI bridge for PCI express, an IP block
which can be used on some generations of Xilinx FPGAs.
+config PCIE_LAYERSCAPE
+ bool "Layerscape PCIe support"
+ depends on DM_PCI
+ help
+ Support Layerscape PCIe. The Layerscape SoC may have one or several
+ PCIe controllers. The PCIe may works in RC or EP mode according to
+ RCW setting.
+
endif
diff --git a/drivers/pci/pcie_layerscape.c b/drivers/pci/pcie_layerscape.c
index 2e6b986..f107d1c 100644
--- a/drivers/pci/pcie_layerscape.c
+++ b/drivers/pci/pcie_layerscape.c
@@ -11,11 +11,14 @@
#include <asm/io.h>
#include <errno.h>
#include <malloc.h>
+#include <dm.h>
#ifndef CONFIG_LS102XA
#include <asm/arch/fdt.h>
#include <asm/arch/soc.h>
#endif
+DECLARE_GLOBAL_DATA_PTR;
+
#ifndef CONFIG_SYS_PCI_MEMORY_BUS
#define CONFIG_SYS_PCI_MEMORY_BUS CONFIG_SYS_SDRAM_BASE
#endif
@@ -40,6 +43,7 @@
#define PCIE_ATU_REGION_INDEX1 (0x1 << 0)
#define PCIE_ATU_REGION_INDEX2 (0x2 << 0)
#define PCIE_ATU_REGION_INDEX3 (0x3 << 0)
+#define PCIE_ATU_REGION_NUM 6
#define PCIE_ATU_CR1 0x904
#define PCIE_ATU_TYPE_MEM (0x0 << 0)
#define PCIE_ATU_TYPE_IO (0x2 << 0)
@@ -58,6 +62,9 @@
#define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16)
#define PCIE_ATU_UPPER_TARGET 0x91C
+/* DBI registers */
+#define PCIE_SRIOV 0x178
+#define PCIE_STRFMR1 0x71c /* Symbol Timer & Filter Mask Register1 */
#define PCIE_DBI_RO_WR_EN 0x8bc
#define PCIE_LINK_CAP 0x7c
@@ -88,6 +95,8 @@
#define PCIE_BAR2_SIZE (4 * 1024) /* 4K */
#define PCIE_BAR4_SIZE (1 * 1024 * 1024) /* 1M */
+#ifndef CONFIG_DM_PCI
+
struct ls_pcie {
int idx;
void __iomem *dbi;
@@ -814,3 +823,755 @@ void ft_pci_setup(void *blob, bd_t *bd)
{
}
#endif
+
+#else
+
+/* LUT registers */
+#define PCIE_LUT_UDR(n) (0x800 + (n) * 8)
+#define PCIE_LUT_LDR(n) (0x804 + (n) * 8)
+#define PCIE_LUT_ENABLE (1 << 31)
+#define PCIE_LUT_ENTRY_COUNT 32
+
+/* PF Controll registers */
+#define PCIE_PF_VF_CTRL 0x7F8
+#define PCIE_PF_DBG 0x7FC
+
+#define PCIE_SRDS_PRTCL(idx) (PCIE1 + (idx))
+#define PCIE_SYS_BASE_ADDR 0x3400000
+#define PCIE_CCSR_SIZE 0x0100000
+
+/* CS2 */
+#define PCIE_CS2_OFFSET 0x1000 /* For PCIe without SR-IOV */
+
+#ifdef CONFIG_LS102XA
+/* LS1021a PCIE space */
+#define LS1021_PCIE_SPACE_OFFSET 0x4000000000ULL
+#define LS1021_PCIE_SPACE_SIZE 0x0800000000ULL
+
+/* LS1021a PEX1/2 Misc Ports Status Register */
+#define LS1021_PEXMSCPORTSR(pex_idx) (0x94 + (pex_idx) * 4)
+#define LS1021_LTSSM_STATE_SHIFT 20
+#endif
+
+struct ls_pcie {
+ int idx;
+ struct list_head list;
+ struct udevice *bus;
+ struct fdt_resource dbi_res;
+ struct fdt_resource lut_res;
+ struct fdt_resource ctrl_res;
+ struct fdt_resource cfg_res;
+ void __iomem *dbi;
+ void __iomem *lut;
+ void __iomem *ctrl;
+ void __iomem *cfg0;
+ void __iomem *cfg1;
+ bool big_endian;
+ bool enabled;
+ int next_lut_index;
+ struct pci_controller hose;
+};
+
+static LIST_HEAD(ls_pcie_list);
+
+static unsigned int dbi_readl(struct ls_pcie *pcie, unsigned int offset)
+{
+ return in_le32(pcie->dbi + offset);
+}
+
+static void dbi_writel(struct ls_pcie *pcie, unsigned int value,
+ unsigned int offset)
+{
+ out_le32(pcie->dbi + offset, value);
+}
+
+#ifdef CONFIG_FSL_LSCH3
+static void lut_writel(struct ls_pcie *pcie, unsigned int value,
+ unsigned int offset)
+{
+ if (pcie->big_endian)
+ out_be32(pcie->lut + offset, value);
+ else
+ out_le32(pcie->lut + offset, value);
+}
+#endif
+
+static unsigned int ctrl_readl(struct ls_pcie *pcie, unsigned int offset)
+{
+ if (pcie->big_endian)
+ return in_be32(pcie->ctrl + offset);
+ else
+ return in_le32(pcie->ctrl + offset);
+}
+
+static void ctrl_writel(struct ls_pcie *pcie, unsigned int value,
+ unsigned int offset)
+{
+ if (pcie->big_endian)
+ out_be32(pcie->ctrl + offset, value);
+ else
+ out_le32(pcie->ctrl + offset, value);
+}
+
+#ifdef CONFIG_LS102XA
+static int ls_pcie_ltssm(struct ls_pcie *pcie)
+{
+ u32 state;
+
+ state = ctrl_readl(pcie, LS1021_PEXMSCPORTSR(pcie->idx));
+ state = (state >> LS1021_LTSSM_STATE_SHIFT) & LTSSM_STATE_MASK;
+
+ return state;
+}
+#else
+static int ls_pcie_ltssm(struct ls_pcie *pcie)
+{
+ return ctrl_readl(pcie, PCIE_PF_DBG) & LTSSM_STATE_MASK;
+}
+#endif
+
+static int ls_pcie_link_up(struct ls_pcie *pcie)
+{
+ int ltssm;
+
+ ltssm = ls_pcie_ltssm(pcie);
+ if (ltssm < LTSSM_PCIE_L0)
+ return 0;
+
+ return 1;
+}
+
+static void ls_pcie_cfg0_set_busdev(struct ls_pcie *pcie, u32 busdev)
+{
+ dbi_writel(pcie, PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX0,
+ PCIE_ATU_VIEWPORT);
+ dbi_writel(pcie, busdev, PCIE_ATU_LOWER_TARGET);
+}
+
+static void ls_pcie_cfg1_set_busdev(struct ls_pcie *pcie, u32 busdev)
+{
+ dbi_writel(pcie, PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX1,
+ PCIE_ATU_VIEWPORT);
+ dbi_writel(pcie, busdev, PCIE_ATU_LOWER_TARGET);
+}
+
+static void ls_pcie_atu_outbound_set(struct ls_pcie *pcie, int idx, int type,
+ u64 phys, u64 bus_addr, pci_size_t size)
+{
+ dbi_writel(pcie, PCIE_ATU_REGION_OUTBOUND | idx, PCIE_ATU_VIEWPORT);
+ dbi_writel(pcie, (u32)phys, PCIE_ATU_LOWER_BASE);
+ dbi_writel(pcie, phys >> 32, PCIE_ATU_UPPER_BASE);
+ dbi_writel(pcie, (u32)phys + size - 1, PCIE_ATU_LIMIT);
+ dbi_writel(pcie, (u32)bus_addr, PCIE_ATU_LOWER_TARGET);
+ dbi_writel(pcie, bus_addr >> 32, PCIE_ATU_UPPER_TARGET);
+ dbi_writel(pcie, type, PCIE_ATU_CR1);
+ dbi_writel(pcie, PCIE_ATU_ENABLE, PCIE_ATU_CR2);
+}
+
+/* Use bar match mode and MEM type as default */
+static void ls_pcie_atu_inbound_set(struct ls_pcie *pcie, int idx,
+ int bar, u64 phys)
+{
+ dbi_writel(pcie, PCIE_ATU_REGION_INBOUND | idx, PCIE_ATU_VIEWPORT);
+ dbi_writel(pcie, (u32)phys, PCIE_ATU_LOWER_TARGET);
+ dbi_writel(pcie, phys >> 32, PCIE_ATU_UPPER_TARGET);
+ dbi_writel(pcie, PCIE_ATU_TYPE_MEM, PCIE_ATU_CR1);
+ dbi_writel(pcie, PCIE_ATU_ENABLE | PCIE_ATU_BAR_MODE_ENABLE |
+ PCIE_ATU_BAR_NUM(bar), PCIE_ATU_CR2);
+}
+
+static void ls_pcie_dump_atu(struct ls_pcie *pcie)
+{
+ int i;
+
+ for (i = 0; i < PCIE_ATU_REGION_NUM; i++) {
+ dbi_writel(pcie, PCIE_ATU_REGION_OUTBOUND | i,
+ PCIE_ATU_VIEWPORT);
+ debug("iATU%d:\n", i);
+ debug("\tLOWER PHYS 0x%08x\n",
+ dbi_readl(pcie, PCIE_ATU_LOWER_BASE));
+ debug("\tUPPER PHYS 0x%08x\n",
+ dbi_readl(pcie, PCIE_ATU_UPPER_BASE));
+ debug("\tLOWER BUS 0x%08x\n",
+ dbi_readl(pcie, PCIE_ATU_LOWER_TARGET));
+ debug("\tUPPER BUS 0x%08x\n",
+ dbi_readl(pcie, PCIE_ATU_UPPER_TARGET));
+ debug("\tLIMIT 0x%08x\n",
+ readl(pcie->dbi + PCIE_ATU_LIMIT));
+ debug("\tCR1 0x%08x\n",
+ dbi_readl(pcie, PCIE_ATU_CR1));
+ debug("\tCR2 0x%08x\n",
+ dbi_readl(pcie, PCIE_ATU_CR2));
+ }
+}
+
+static void ls_pcie_setup_atu(struct ls_pcie *pcie)
+{
+ struct pci_region *io, *mem, *pref;
+ unsigned long long offset = 0;
+ int idx = 0;
+
+#ifdef CONFIG_LS102XA
+ offset = LS1021_PCIE_SPACE_OFFSET + LS1021_PCIE_SPACE_SIZE * pcie->idx;
+#endif
+
+ /* ATU 0 : OUTBOUND : CFG0 */
+ ls_pcie_atu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0,
+ PCIE_ATU_TYPE_CFG0,
+ pcie->cfg_res.start + offset,
+ 0,
+ fdt_resource_size(&pcie->cfg_res) / 2);
+ /* ATU 1 : OUTBOUND : CFG1 */
+ ls_pcie_atu_outbound_set(pcie, PCIE_ATU_REGION_INDEX1,
+ PCIE_ATU_TYPE_CFG1,
+ pcie->cfg_res.start + offset +
+ fdt_resource_size(&pcie->cfg_res) / 2,
+ 0,
+ fdt_resource_size(&pcie->cfg_res) / 2);
+
+ pci_get_regions(pcie->bus, &io, &mem, &pref);
+ idx = PCIE_ATU_REGION_INDEX1 + 1;
+
+ if (io)
+ /* ATU : OUTBOUND : IO */
+ ls_pcie_atu_outbound_set(pcie, idx++,
+ PCIE_ATU_TYPE_IO,
+ io->phys_start + offset,
+ io->bus_start,
+ io->size);
+
+ if (mem)
+ /* ATU : OUTBOUND : MEM */
+ ls_pcie_atu_outbound_set(pcie, idx++,
+ PCIE_ATU_TYPE_MEM,
+ mem->phys_start + offset,
+ mem->bus_start,
+ mem->size);
+
+ if (pref)
+ /* ATU : OUTBOUND : pref */
+ ls_pcie_atu_outbound_set(pcie, idx++,
+ PCIE_ATU_TYPE_MEM,
+ pref->phys_start + offset,
+ pref->bus_start,
+ pref->size);
+
+ ls_pcie_dump_atu(pcie);
+}
+
+static int ls_pcie_addr_valid(struct ls_pcie *pcie, pci_dev_t bdf)
+{
+ struct udevice *bus = pcie->bus;
+
+ if (!pcie->enabled)
+ return -ENODEV;
+
+ if (PCI_BUS(bdf) < bus->seq)
+ return -EINVAL;
+
+ if ((PCI_BUS(bdf) > bus->seq) && (!ls_pcie_link_up(pcie)))
+ return -EINVAL;
+
+ if (PCI_BUS(bdf) <= (bus->seq + 1) && (PCI_DEV(bdf) > 0))
+ return -EINVAL;
+
+ return 0;
+}
+
+void *ls_pcie_conf_address(struct ls_pcie *pcie, pci_dev_t bdf,
+ int offset)
+{
+ struct udevice *bus = pcie->bus;
+ u32 busdev;
+
+ if (PCI_BUS(bdf) == bus->seq)
+ return pcie->dbi + offset;
+
+ busdev = PCIE_ATU_BUS(PCI_BUS(bdf)) |
+ PCIE_ATU_DEV(PCI_DEV(bdf)) |
+ PCIE_ATU_FUNC(PCI_FUNC(bdf));
+
+ if (PCI_BUS(bdf) == bus->seq + 1) {
+ ls_pcie_cfg0_set_busdev(pcie, busdev);
+ return pcie->cfg0 + offset;
+ } else {
+ ls_pcie_cfg1_set_busdev(pcie, busdev);
+ return pcie->cfg1 + offset;
+ }
+}
+
+static int ls_pcie_read_config(struct udevice *bus, pci_dev_t bdf,
+ uint offset, ulong *valuep,
+ enum pci_size_t size)
+{
+ struct ls_pcie *pcie = dev_get_priv(bus);
+ void *address;
+
+ if (ls_pcie_addr_valid(pcie, bdf)) {
+ *valuep = pci_get_ff(size);
+ return 0;
+ }
+
+ address = ls_pcie_conf_address(pcie, bdf, offset);
+
+ switch (size) {
+ case PCI_SIZE_8:
+ *valuep = readb(address);
+ return 0;
+ case PCI_SIZE_16:
+ *valuep = readw(address);
+ return 0;
+ case PCI_SIZE_32:
+ *valuep = readl(address);
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int ls_pcie_write_config(struct udevice *bus, pci_dev_t bdf,
+ uint offset, ulong value,
+ enum pci_size_t size)
+{
+ struct ls_pcie *pcie = dev_get_priv(bus);
+ void *address;
+
+ if (ls_pcie_addr_valid(pcie, bdf))
+ return 0;
+
+ address = ls_pcie_conf_address(pcie, bdf, offset);
+
+ switch (size) {
+ case PCI_SIZE_8:
+ writeb(value, address);
+ return 0;
+ case PCI_SIZE_16:
+ writew(value, address);
+ return 0;
+ case PCI_SIZE_32:
+ writel(value, address);
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+/* Clear multi-function bit */
+static void ls_pcie_clear_multifunction(struct ls_pcie *pcie)
+{
+ writeb(PCI_HEADER_TYPE_BRIDGE, pcie->dbi + PCI_HEADER_TYPE);
+}
+
+/* Fix class value */
+static void ls_pcie_fix_class(struct ls_pcie *pcie)
+{
+ writew(PCI_CLASS_BRIDGE_PCI, pcie->dbi + PCI_CLASS_DEVICE);
+}
+
+/* Drop MSG TLP except for Vendor MSG */
+static void ls_pcie_drop_msg_tlp(struct ls_pcie *pcie)
+{
+ u32 val;
+
+ val = dbi_readl(pcie, PCIE_STRFMR1);
+ val &= 0xDFFFFFFF;
+ dbi_writel(pcie, val, PCIE_STRFMR1);
+}
+
+/* Disable all bars in RC mode */
+static void ls_pcie_disable_bars(struct ls_pcie *pcie)
+{
+ u32 sriov;
+
+ sriov = in_le32(pcie->dbi + PCIE_SRIOV);
+
+ if (PCI_EXT_CAP_ID(sriov) == PCI_EXT_CAP_ID_SRIOV)
+ return;
+
+ dbi_writel(pcie, 0, PCIE_CS2_OFFSET + PCI_BASE_ADDRESS_0);
+ dbi_writel(pcie, 0, PCIE_CS2_OFFSET + PCI_BASE_ADDRESS_1);
+ dbi_writel(pcie, 0, PCIE_CS2_OFFSET + PCI_ROM_ADDRESS1);
+}
+
+static void ls_pcie_setup_ctrl(struct ls_pcie *pcie)
+{
+ ls_pcie_setup_atu(pcie);
+
+ dbi_writel(pcie, 1, PCIE_DBI_RO_WR_EN);
+ ls_pcie_fix_class(pcie);
+ ls_pcie_clear_multifunction(pcie);
+ ls_pcie_drop_msg_tlp(pcie);
+ dbi_writel(pcie, 0, PCIE_DBI_RO_WR_EN);
+
+ ls_pcie_disable_bars(pcie);
+}
+
+static void ls_pcie_ep_setup_atu(struct ls_pcie *pcie)
+{
+ u64 phys = CONFIG_SYS_PCI_EP_MEMORY_BASE;
+
+ /* ATU 0 : INBOUND : map BAR0 */
+ ls_pcie_atu_inbound_set(pcie, 0, 0, phys);
+ /* ATU 1 : INBOUND : map BAR1 */
+ phys += PCIE_BAR1_SIZE;
+ ls_pcie_atu_inbound_set(pcie, 1, 1, phys);
+ /* ATU 2 : INBOUND : map BAR2 */
+ phys += PCIE_BAR2_SIZE;
+ ls_pcie_atu_inbound_set(pcie, 2, 2, phys);
+ /* ATU 3 : INBOUND : map BAR4 */
+ phys = CONFIG_SYS_PCI_EP_MEMORY_BASE + PCIE_BAR4_SIZE;
+ ls_pcie_atu_inbound_set(pcie, 3, 4, phys);
+
+ /* ATU 0 : OUTBOUND : map MEM */
+ ls_pcie_atu_outbound_set(pcie, 0,
+ PCIE_ATU_TYPE_MEM,
+ pcie->cfg_res.start,
+ 0,
+ CONFIG_SYS_PCI_MEMORY_SIZE);
+}
+
+/* BAR0 and BAR1 are 32bit BAR2 and BAR4 are 64bit */
+static void ls_pcie_ep_setup_bar(void *bar_base, int bar, u32 size)
+{
+ if (size < 4 * 1024)
+ return;
+
+ switch (bar) {
+ case 0:
+ writel(size - 1, bar_base + PCI_BASE_ADDRESS_0);
+ break;
+ case 1:
+ writel(size - 1, bar_base + PCI_BASE_ADDRESS_1);
+ break;
+ case 2:
+ writel(size - 1, bar_base + PCI_BASE_ADDRESS_2);
+ writel(0, bar_base + PCI_BASE_ADDRESS_3);
+ break;
+ case 4:
+ writel(size - 1, bar_base + PCI_BASE_ADDRESS_4);
+ writel(0, bar_base + PCI_BASE_ADDRESS_5);
+ break;
+ default:
+ break;
+ }
+}
+
+static void ls_pcie_ep_setup_bars(void *bar_base)
+{
+ /* BAR0 - 32bit - 4K configuration */
+ ls_pcie_ep_setup_bar(bar_base, 0, PCIE_BAR0_SIZE);
+ /* BAR1 - 32bit - 8K MSIX*/
+ ls_pcie_ep_setup_bar(bar_base, 1, PCIE_BAR1_SIZE);
+ /* BAR2 - 64bit - 4K MEM desciptor */
+ ls_pcie_ep_setup_bar(bar_base, 2, PCIE_BAR2_SIZE);
+ /* BAR4 - 64bit - 1M MEM*/
+ ls_pcie_ep_setup_bar(bar_base, 4, PCIE_BAR4_SIZE);
+}
+
+static void ls_pcie_setup_ep(struct ls_pcie *pcie)
+{
+ u32 sriov;
+
+ sriov = readl(pcie->dbi + PCIE_SRIOV);
+ if (PCI_EXT_CAP_ID(sriov) == PCI_EXT_CAP_ID_SRIOV) {
+ int pf, vf;
+
+ for (pf = 0; pf < PCIE_PF_NUM; pf++) {
+ for (vf = 0; vf <= PCIE_VF_NUM; vf++) {
+ ctrl_writel(pcie, PCIE_LCTRL0_VAL(pf, vf),
+ PCIE_PF_VF_CTRL);
+
+ ls_pcie_ep_setup_bars(pcie->dbi);
+ ls_pcie_ep_setup_atu(pcie);
+ }
+ }
+ /* Disable CFG2 */
+ ctrl_writel(pcie, 0, PCIE_PF_VF_CTRL);
+ } else {
+ ls_pcie_ep_setup_bars(pcie->dbi + PCIE_NO_SRIOV_BAR_BASE);
+ ls_pcie_ep_setup_atu(pcie);
+ }
+}
+
+#ifdef CONFIG_FSL_LSCH3
+/*
+ * Return next available LUT index.
+ */
+static int ls_pcie_next_lut_index(struct ls_pcie *pcie)
+{
+ if (pcie->next_lut_index < PCIE_LUT_ENTRY_COUNT)
+ return pcie->next_lut_index++;
+ else
+ return -1; /* LUT is full */
+}
+
+/*
+ * Program a single LUT entry
+ */
+static void ls_pcie_lut_set_mapping(struct ls_pcie *pcie, int index, u32 devid,
+ u32 streamid)
+{
+ /* leave mask as all zeroes, want to match all bits */
+ lut_writel(pcie, devid << 16, PCIE_LUT_UDR(index));
+ lut_writel(pcie, streamid | PCIE_LUT_ENABLE, PCIE_LUT_LDR(index));
+}
+
+/* returns the next available streamid */
+static u32 ls_pcie_next_streamid(void)
+{
+ static int next_stream_id = FSL_PEX_STREAM_ID_START;
+
+ if (next_stream_id > FSL_PEX_STREAM_ID_END)
+ return 0xffffffff;
+
+ return next_stream_id++;
+}
+
+/*
+ * An msi-map is a property to be added to the pci controller
+ * node. It is a table, where each entry consists of 4 fields
+ * e.g.:
+ *
+ * msi-map = <[devid] [phandle-to-msi-ctrl] [stream-id] [count]
+ * [devid] [phandle-to-msi-ctrl] [stream-id] [count]>;
+ */
+static void fdt_pcie_set_msi_map_entry(void *blob, struct ls_pcie *pcie,
+ u32 devid, u32 streamid)
+{
+ u32 *prop;
+ u32 phandle;
+ int nodeoffset;
+
+ /* find pci controller node */
+ nodeoffset = fdt_node_offset_by_compat_reg(blob, "fsl,ls-pcie",
+ pcie->dbi_res.start);
+ if (nodeoffset < 0) {
+ #ifdef FSL_PCIE_COMPAT /* Compatible with older version of dts node */
+ nodeoffset = fdt_node_offset_by_compat_reg(blob,
+ FSL_PCIE_COMPAT,
+ pcie->dbi_res.start);
+ if (nodeoffset < 0)
+ return;
+ #else
+ return;
+ #endif
+ }
+
+ /* get phandle to MSI controller */
+ prop = (u32 *)fdt_getprop(blob, nodeoffset, "msi-parent", 0);
+ if (prop == NULL) {
+ printf("\n%s: ERROR: missing msi-parent: PCIe%d\n",
+ __func__, pcie->idx);
+ return;
+ }
+ phandle = be32_to_cpu(*prop);
+
+ /* set one msi-map row */
+ fdt_appendprop_u32(blob, nodeoffset, "msi-map", devid);
+ fdt_appendprop_u32(blob, nodeoffset, "msi-map", phandle);
+ fdt_appendprop_u32(blob, nodeoffset, "msi-map", streamid);
+ fdt_appendprop_u32(blob, nodeoffset, "msi-map", 1);
+}
+
+static void fdt_fixup_pcie(void *blob)
+{
+ struct udevice *dev, *bus;
+ struct ls_pcie *pcie;
+ u32 streamid;
+ int index;
+ pci_dev_t bdf;
+
+ /* Scan all known buses */
+ for (pci_find_first_device(&dev);
+ dev;
+ pci_find_next_device(&dev)) {
+ for (bus = dev; device_is_on_pci_bus(bus);)
+ bus = bus->parent;
+ pcie = dev_get_priv(bus);
+
+ streamid = ls_pcie_next_streamid();
+ if (streamid == 0xffffffff) {
+ printf("ERROR: no stream ids free\n");
+ continue;
+ }
+
+ index = ls_pcie_next_lut_index(pcie);
+ if (index < 0) {
+ printf("ERROR: no LUT indexes free\n");
+ continue;
+ }
+
+ /* the DT fixup must be relative to the hose first_busno */
+ bdf = dm_pci_get_bdf(dev) - PCI_BDF(bus->seq, 0, 0);
+ /* map PCI b.d.f to streamID in LUT */
+ ls_pcie_lut_set_mapping(pcie, index, bdf >> 8,
+ streamid);
+ /* update msi-map in device tree */
+ fdt_pcie_set_msi_map_entry(blob, pcie, bdf >> 8,
+ streamid);
+ }
+}
+#endif
+
+#ifdef CONFIG_OF_BOARD_SETUP
+#include <libfdt.h>
+#include <fdt_support.h>
+
+static void ft_pcie_ls_setup(void *blob, struct ls_pcie *pcie)
+{
+ int off;
+
+ off = fdt_node_offset_by_compat_reg(blob, "fsl,ls-pcie",
+ pcie->dbi_res.start);
+ if (off < 0) {
+ #ifdef FSL_PCIE_COMPAT /* Compatible with older version of dts node */
+ off = fdt_node_offset_by_compat_reg(blob,
+ FSL_PCIE_COMPAT,
+ pcie->dbi_res.start);
+ if (off < 0)
+ return;
+ #else
+ return;
+ #endif
+ }
+
+ if (pcie->enabled)
+ fdt_set_node_status(blob, off, FDT_STATUS_OKAY, 0);
+ else
+ fdt_set_node_status(blob, off, FDT_STATUS_DISABLED, 0);
+}
+
+void ft_pci_setup(void *blob, bd_t *bd)
+{
+ struct ls_pcie *pcie;
+
+ list_for_each_entry(pcie, &ls_pcie_list, list)
+ ft_pcie_ls_setup(blob, pcie);
+
+ #ifdef CONFIG_FSL_LSCH3
+ fdt_fixup_pcie(blob);
+ #endif
+}
+
+#else
+void ft_pci_setup(void *blob, bd_t *bd)
+{
+}
+#endif
+
+static int ls_pcie_probe(struct udevice *dev)
+{
+ struct ls_pcie *pcie = dev_get_priv(dev);
+ void *fdt = (void *)gd->fdt_blob;
+ int node = dev->of_offset;
+ u8 header_type;
+ u16 link_sta;
+ bool ep_mode;
+ int ret;
+
+ pcie->bus = dev;
+
+ ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
+ "dbi", &pcie->dbi_res);
+ if (ret) {
+ printf("ls-pcie: resource \"dbi\" not found\n");
+ return ret;
+ }
+
+ pcie->idx = (pcie->dbi_res.start - PCIE_SYS_BASE_ADDR) / PCIE_CCSR_SIZE;
+
+ list_add(&pcie->list, &ls_pcie_list);
+
+ pcie->enabled = is_serdes_configured(PCIE_SRDS_PRTCL(pcie->idx));
+ if (!pcie->enabled) {
+ printf("PCIe%d: %s disabled\n", pcie->idx, dev->name);
+ return 0;
+ }
+
+ pcie->dbi = map_physmem(pcie->dbi_res.start,
+ fdt_resource_size(&pcie->dbi_res),
+ MAP_NOCACHE);
+
+ ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
+ "lut", &pcie->lut_res);
+ if (!ret)
+ pcie->lut = map_physmem(pcie->lut_res.start,
+ fdt_resource_size(&pcie->lut_res),
+ MAP_NOCACHE);
+
+ ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
+ "ctrl", &pcie->ctrl_res);
+ if (!ret)
+ pcie->ctrl = map_physmem(pcie->ctrl_res.start,
+ fdt_resource_size(&pcie->ctrl_res),
+ MAP_NOCACHE);
+ if (!pcie->ctrl)
+ pcie->ctrl = pcie->lut;
+
+ if (!pcie->ctrl) {
+ printf("%s: NOT find CTRL\n", dev->name);
+ return 0;
+ }
+
+ ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
+ "config", &pcie->cfg_res);
+ if (ret) {
+ printf("%s: resource \"config\" not found\n", dev->name);
+ return 0;
+ }
+
+ pcie->cfg0 = map_physmem(pcie->cfg_res.start,
+ fdt_resource_size(&pcie->cfg_res),
+ MAP_NOCACHE);
+ pcie->cfg1 = pcie->cfg0 + fdt_resource_size(&pcie->cfg_res) / 2;
+
+ pcie->big_endian = fdtdec_get_bool(fdt, node, "big-endian");
+
+ debug("%s dbi:%lx lut:%lx ctrl:0x%lx cfg0:0x%lx, big-endian:%d\n",
+ dev->name, (unsigned long)pcie->dbi, (unsigned long)pcie->lut,
+ (unsigned long)pcie->ctrl, (unsigned long)pcie->cfg0,
+ pcie->big_endian);
+
+ header_type = readb(pcie->dbi + PCI_HEADER_TYPE);
+ ep_mode = (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL;
+ printf("PCIe%u: %s %s", pcie->idx, dev->name,
+ ep_mode ? "Endpoint" : "Root Complex");
+
+ if (ep_mode)
+ ls_pcie_setup_ep(pcie);
+ else
+ ls_pcie_setup_ctrl(pcie);
+
+ if (!ls_pcie_link_up(pcie)) {
+ /* Let the user know there's no PCIe link */
+ printf(": no link\n");
+ return 0;
+ }
+
+ /* Print the negotiated PCIe link width */
+ link_sta = readw(pcie->dbi + PCIE_LINK_STA);
+ printf(": x%d gen%d\n", (link_sta & 0x3f0) >> 4, link_sta & 0xf);
+
+ return 0;
+}
+
+static const struct dm_pci_ops ls_pcie_ops = {
+ .read_config = ls_pcie_read_config,
+ .write_config = ls_pcie_write_config,
+};
+
+static const struct udevice_id ls_pcie_ids[] = {
+ { .compatible = "fsl,ls-pcie" },
+ { }
+};
+
+U_BOOT_DRIVER(pci_layerscape) = {
+ .name = "pci_layerscape",
+ .id = UCLASS_PCI,
+ .of_match = ls_pcie_ids,
+ .ops = &ls_pcie_ops,
+ .probe = ls_pcie_probe,
+ .priv_auto_alloc_size = sizeof(struct ls_pcie),
+};
+
+#endif /* CONFIG_DM_PCI */
--
2.1.0.27.g96db324
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