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Jetpack/u-boot/drivers/pci/pcie_layerscape.c

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cti_kernel: Add CTI sources Elroy L4T r32.4.4 – JetPack 4.4.1
2021-01-25 18:30:10 -04:00
/*
* Copyright 2014-2015 Freescale Semiconductor, Inc.
* Layerscape PCIe driver
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/fsl_serdes.h>
#include <pci.h>
#include <asm/io.h>
#include <errno.h>
#include <malloc.h>
#ifndef CONFIG_LS102XA
#include <asm/arch/fdt.h>
#include <asm/arch/soc.h>
#endif
#ifndef CONFIG_SYS_PCI_MEMORY_BUS
#define CONFIG_SYS_PCI_MEMORY_BUS CONFIG_SYS_SDRAM_BASE
#endif
#ifndef CONFIG_SYS_PCI_MEMORY_PHYS
#define CONFIG_SYS_PCI_MEMORY_PHYS CONFIG_SYS_SDRAM_BASE
#endif
#ifndef CONFIG_SYS_PCI_MEMORY_SIZE
#define CONFIG_SYS_PCI_MEMORY_SIZE (2 * 1024 * 1024 * 1024UL) /* 2G */
#endif
#ifndef CONFIG_SYS_PCI_EP_MEMORY_BASE
#define CONFIG_SYS_PCI_EP_MEMORY_BASE CONFIG_SYS_LOAD_ADDR
#endif
/* iATU registers */
#define PCIE_ATU_VIEWPORT 0x900
#define PCIE_ATU_REGION_INBOUND (0x1 << 31)
#define PCIE_ATU_REGION_OUTBOUND (0x0 << 31)
#define PCIE_ATU_REGION_INDEX0 (0x0 << 0)
#define PCIE_ATU_REGION_INDEX1 (0x1 << 0)
#define PCIE_ATU_REGION_INDEX2 (0x2 << 0)
#define PCIE_ATU_REGION_INDEX3 (0x3 << 0)
#define PCIE_ATU_CR1 0x904
#define PCIE_ATU_TYPE_MEM (0x0 << 0)
#define PCIE_ATU_TYPE_IO (0x2 << 0)
#define PCIE_ATU_TYPE_CFG0 (0x4 << 0)
#define PCIE_ATU_TYPE_CFG1 (0x5 << 0)
#define PCIE_ATU_CR2 0x908
#define PCIE_ATU_ENABLE (0x1 << 31)
#define PCIE_ATU_BAR_MODE_ENABLE (0x1 << 30)
#define PCIE_ATU_BAR_NUM(bar) ((bar) << 8)
#define PCIE_ATU_LOWER_BASE 0x90C
#define PCIE_ATU_UPPER_BASE 0x910
#define PCIE_ATU_LIMIT 0x914
#define PCIE_ATU_LOWER_TARGET 0x918
#define PCIE_ATU_BUS(x) (((x) & 0xff) << 24)
#define PCIE_ATU_DEV(x) (((x) & 0x1f) << 19)
#define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16)
#define PCIE_ATU_UPPER_TARGET 0x91C
#define PCIE_DBI_RO_WR_EN 0x8bc
#define PCIE_LINK_CAP 0x7c
#define PCIE_LINK_SPEED_MASK 0xf
#define PCIE_LINK_STA 0x82
#define LTSSM_STATE_MASK 0x3f
#define LTSSM_PCIE_L0 0x11 /* L0 state */
#define PCIE_DBI_SIZE 0x100000 /* 1M */
#define PCIE_LCTRL0_CFG2_ENABLE (1 << 31)
#define PCIE_LCTRL0_VF(vf) ((vf) << 22)
#define PCIE_LCTRL0_PF(pf) ((pf) << 16)
#define PCIE_LCTRL0_VF_ACTIVE (1 << 21)
#define PCIE_LCTRL0_VAL(pf, vf) (PCIE_LCTRL0_PF(pf) | \
PCIE_LCTRL0_VF(vf) | \
((vf) == 0 ? 0 : PCIE_LCTRL0_VF_ACTIVE) | \
PCIE_LCTRL0_CFG2_ENABLE)
#define PCIE_NO_SRIOV_BAR_BASE 0x1000
#define PCIE_PF_NUM 2
#define PCIE_VF_NUM 64
#define PCIE_BAR0_SIZE (4 * 1024) /* 4K */
#define PCIE_BAR1_SIZE (8 * 1024) /* 8K for MSIX */
#define PCIE_BAR2_SIZE (4 * 1024) /* 4K */
#define PCIE_BAR4_SIZE (1 * 1024 * 1024) /* 1M */
struct ls_pcie {
int idx;
void __iomem *dbi;
void __iomem *va_cfg0;
void __iomem *va_cfg1;
int next_lut_index;
struct pci_controller hose;
};
struct ls_pcie_info {
unsigned long regs;
int pci_num;
u64 phys_base;
u64 cfg0_phys;
u64 cfg0_size;
u64 cfg1_phys;
u64 cfg1_size;
u64 mem_bus;
u64 mem_phys;
u64 mem_size;
u64 io_bus;
u64 io_phys;
u64 io_size;
};
#define SET_LS_PCIE_INFO(x, num) \
{ \
x.regs = CONFIG_SYS_PCIE##num##_ADDR; \
x.phys_base = CONFIG_SYS_PCIE##num##_PHYS_ADDR; \
x.cfg0_phys = CONFIG_SYS_PCIE_CFG0_PHYS_OFF + \
CONFIG_SYS_PCIE##num##_PHYS_ADDR; \
x.cfg0_size = CONFIG_SYS_PCIE_CFG0_SIZE; \
x.cfg1_phys = CONFIG_SYS_PCIE_CFG1_PHYS_OFF + \
CONFIG_SYS_PCIE##num##_PHYS_ADDR; \
x.cfg1_size = CONFIG_SYS_PCIE_CFG1_SIZE; \
x.mem_bus = CONFIG_SYS_PCIE_MEM_BUS; \
x.mem_phys = CONFIG_SYS_PCIE_MEM_PHYS_OFF + \
CONFIG_SYS_PCIE##num##_PHYS_ADDR; \
x.mem_size = CONFIG_SYS_PCIE_MEM_SIZE; \
x.io_bus = CONFIG_SYS_PCIE_IO_BUS; \
x.io_phys = CONFIG_SYS_PCIE_IO_PHYS_OFF + \
CONFIG_SYS_PCIE##num##_PHYS_ADDR; \
x.io_size = CONFIG_SYS_PCIE_IO_SIZE; \
x.pci_num = num; \
}
#ifdef CONFIG_LS102XA
#include <asm/arch/immap_ls102xa.h>
/* PEX1/2 Misc Ports Status Register */
#define LTSSM_STATE_SHIFT 20
static int ls_pcie_link_state(struct ls_pcie *pcie)
{
u32 state;
struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR;
state = in_be32(&scfg->pexmscportsr[pcie->idx]);
state = (state >> LTSSM_STATE_SHIFT) & LTSSM_STATE_MASK;
if (state < LTSSM_PCIE_L0) {
debug("....PCIe link error. LTSSM=0x%02x.\n", state);
return 0;
}
return 1;
}
#else
static int ls_pcie_link_state(struct ls_pcie *pcie)
{
u32 state;
state = pex_lut_in32(pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_DBG) &
LTSSM_STATE_MASK;
if (state < LTSSM_PCIE_L0) {
debug("....PCIe link error. LTSSM=0x%02x.\n", state);
return 0;
}
return 1;
}
#endif
static int ls_pcie_link_up(struct ls_pcie *pcie)
{
int state;
u32 cap;
state = ls_pcie_link_state(pcie);
if (state)
return state;
/* Try to download speed to gen1 */
cap = readl(pcie->dbi + PCIE_LINK_CAP);
writel((cap & (~PCIE_LINK_SPEED_MASK)) | 1, pcie->dbi + PCIE_LINK_CAP);
/*
* Notice: the following delay has critical impact on link training
* if too short (<30ms) the link doesn't get up.
*/
mdelay(100);
state = ls_pcie_link_state(pcie);
if (state)
return state;
writel(cap, pcie->dbi + PCIE_LINK_CAP);
return 0;
}
static void ls_pcie_cfg0_set_busdev(struct ls_pcie *pcie, u32 busdev)
{
writel(PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX0,
pcie->dbi + PCIE_ATU_VIEWPORT);
writel(busdev, pcie->dbi + PCIE_ATU_LOWER_TARGET);
}
static void ls_pcie_cfg1_set_busdev(struct ls_pcie *pcie, u32 busdev)
{
writel(PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX1,
pcie->dbi + PCIE_ATU_VIEWPORT);
writel(busdev, pcie->dbi + PCIE_ATU_LOWER_TARGET);
}
static void ls_pcie_iatu_outbound_set(struct ls_pcie *pcie, int idx, int type,
u64 phys, u64 bus_addr, pci_size_t size)
{
writel(PCIE_ATU_REGION_OUTBOUND | idx, pcie->dbi + PCIE_ATU_VIEWPORT);
writel((u32)phys, pcie->dbi + PCIE_ATU_LOWER_BASE);
writel(phys >> 32, pcie->dbi + PCIE_ATU_UPPER_BASE);
writel(phys + size - 1, pcie->dbi + PCIE_ATU_LIMIT);
writel((u32)bus_addr, pcie->dbi + PCIE_ATU_LOWER_TARGET);
writel(bus_addr >> 32, pcie->dbi + PCIE_ATU_UPPER_TARGET);
writel(type, pcie->dbi + PCIE_ATU_CR1);
writel(PCIE_ATU_ENABLE, pcie->dbi + PCIE_ATU_CR2);
}
/* Use bar match mode and MEM type as default */
static void ls_pcie_iatu_inbound_set(struct ls_pcie *pcie, int idx,
int bar, u64 phys)
{
writel(PCIE_ATU_REGION_INBOUND | idx, pcie->dbi + PCIE_ATU_VIEWPORT);
writel((u32)phys, pcie->dbi + PCIE_ATU_LOWER_TARGET);
writel(phys >> 32, pcie->dbi + PCIE_ATU_UPPER_TARGET);
writel(PCIE_ATU_TYPE_MEM, pcie->dbi + PCIE_ATU_CR1);
writel(PCIE_ATU_ENABLE | PCIE_ATU_BAR_MODE_ENABLE |
PCIE_ATU_BAR_NUM(bar), pcie->dbi + PCIE_ATU_CR2);
}
static void ls_pcie_setup_atu(struct ls_pcie *pcie, struct ls_pcie_info *info)
{
#ifdef DEBUG
int i;
#endif
/* ATU 0 : OUTBOUND : CFG0 */
ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0,
PCIE_ATU_TYPE_CFG0,
info->cfg0_phys,
0,
info->cfg0_size);
/* ATU 1 : OUTBOUND : CFG1 */
ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX1,
PCIE_ATU_TYPE_CFG1,
info->cfg1_phys,
0,
info->cfg1_size);
/* ATU 2 : OUTBOUND : MEM */
ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX2,
PCIE_ATU_TYPE_MEM,
info->mem_phys,
info->mem_bus,
info->mem_size);
/* ATU 3 : OUTBOUND : IO */
ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX3,
PCIE_ATU_TYPE_IO,
info->io_phys,
info->io_bus,
info->io_size);
#ifdef DEBUG
for (i = 0; i <= PCIE_ATU_REGION_INDEX3; i++) {
writel(PCIE_ATU_REGION_OUTBOUND | i,
pcie->dbi + PCIE_ATU_VIEWPORT);
debug("iATU%d:\n", i);
debug("\tLOWER PHYS 0x%08x\n",
readl(pcie->dbi + PCIE_ATU_LOWER_BASE));
debug("\tUPPER PHYS 0x%08x\n",
readl(pcie->dbi + PCIE_ATU_UPPER_BASE));
debug("\tLOWER BUS 0x%08x\n",
readl(pcie->dbi + PCIE_ATU_LOWER_TARGET));
debug("\tUPPER BUS 0x%08x\n",
readl(pcie->dbi + PCIE_ATU_UPPER_TARGET));
debug("\tLIMIT 0x%08x\n",
readl(pcie->dbi + PCIE_ATU_LIMIT));
debug("\tCR1 0x%08x\n",
readl(pcie->dbi + PCIE_ATU_CR1));
debug("\tCR2 0x%08x\n",
readl(pcie->dbi + PCIE_ATU_CR2));
}
#endif
}
int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
{
/* Do not skip controller */
return 0;
}
static int ls_pcie_addr_valid(struct pci_controller *hose, pci_dev_t d)
{
if (PCI_DEV(d) > 0)
return -EINVAL;
/* Controller does not support multi-function in RC mode */
if ((PCI_BUS(d) == hose->first_busno) && (PCI_FUNC(d) > 0))
return -EINVAL;
return 0;
}
static int ls_pcie_read_config(struct pci_controller *hose, pci_dev_t d,
int where, u32 *val)
{
struct ls_pcie *pcie = hose->priv_data;
u32 busdev, *addr;
if (ls_pcie_addr_valid(hose, d)) {
*val = 0xffffffff;
return 0;
}
if (PCI_BUS(d) == hose->first_busno) {
addr = pcie->dbi + (where & ~0x3);
} else {
busdev = PCIE_ATU_BUS(PCI_BUS(d)) |
PCIE_ATU_DEV(PCI_DEV(d)) |
PCIE_ATU_FUNC(PCI_FUNC(d));
if (PCI_BUS(d) == hose->first_busno + 1) {
ls_pcie_cfg0_set_busdev(pcie, busdev);
addr = pcie->va_cfg0 + (where & ~0x3);
} else {
ls_pcie_cfg1_set_busdev(pcie, busdev);
addr = pcie->va_cfg1 + (where & ~0x3);
}
}
*val = readl(addr);
return 0;
}
static int ls_pcie_write_config(struct pci_controller *hose, pci_dev_t d,
int where, u32 val)
{
struct ls_pcie *pcie = hose->priv_data;
u32 busdev, *addr;
if (ls_pcie_addr_valid(hose, d))
return -EINVAL;
if (PCI_BUS(d) == hose->first_busno) {
addr = pcie->dbi + (where & ~0x3);
} else {
busdev = PCIE_ATU_BUS(PCI_BUS(d)) |
PCIE_ATU_DEV(PCI_DEV(d)) |
PCIE_ATU_FUNC(PCI_FUNC(d));
if (PCI_BUS(d) == hose->first_busno + 1) {
ls_pcie_cfg0_set_busdev(pcie, busdev);
addr = pcie->va_cfg0 + (where & ~0x3);
} else {
ls_pcie_cfg1_set_busdev(pcie, busdev);
addr = pcie->va_cfg1 + (where & ~0x3);
}
}
writel(val, addr);
return 0;
}
static void ls_pcie_setup_ctrl(struct ls_pcie *pcie,
struct ls_pcie_info *info)
{
struct pci_controller *hose = &pcie->hose;
pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0);
ls_pcie_setup_atu(pcie, info);
pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0);
/* program correct class for RC */
writel(1, pcie->dbi + PCIE_DBI_RO_WR_EN);
pci_hose_write_config_word(hose, dev, PCI_CLASS_DEVICE,
PCI_CLASS_BRIDGE_PCI);
#ifndef CONFIG_LS102XA
writel(0, pcie->dbi + PCIE_DBI_RO_WR_EN);
#endif
}
static void ls_pcie_ep_setup_atu(struct ls_pcie *pcie,
struct ls_pcie_info *info)
{
u64 phys = CONFIG_SYS_PCI_EP_MEMORY_BASE;
/* ATU 0 : INBOUND : map BAR0 */
ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX0, 0, phys);
/* ATU 1 : INBOUND : map BAR1 */
phys += PCIE_BAR1_SIZE;
ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX1, 1, phys);
/* ATU 2 : INBOUND : map BAR2 */
phys += PCIE_BAR2_SIZE;
ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX2, 2, phys);
/* ATU 3 : INBOUND : map BAR4 */
phys = CONFIG_SYS_PCI_EP_MEMORY_BASE + PCIE_BAR4_SIZE;
ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX3, 4, phys);
/* ATU 0 : OUTBOUND : map 4G MEM */
ls_pcie_iatu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0,
PCIE_ATU_TYPE_MEM,
info->phys_base,
0,
4 * 1024 * 1024 * 1024ULL);
}
/* 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, struct ls_pcie_info *info)
{
struct pci_controller *hose = &pcie->hose;
pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0);
int sriov;
sriov = pci_hose_find_ext_capability(hose, dev, PCI_EXT_CAP_ID_SRIOV);
if (sriov) {
int pf, vf;
for (pf = 0; pf < PCIE_PF_NUM; pf++) {
for (vf = 0; vf <= PCIE_VF_NUM; vf++) {
#ifndef CONFIG_LS102XA
writel(PCIE_LCTRL0_VAL(pf, vf),
pcie->dbi + PCIE_LUT_BASE +
PCIE_LUT_LCTRL0);
#endif
ls_pcie_ep_setup_bars(pcie->dbi);
ls_pcie_ep_setup_atu(pcie, info);
}
}
/* Disable CFG2 */
#ifndef CONFIG_LS102XA
writel(0, pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_LCTRL0);
#endif
} else {
ls_pcie_ep_setup_bars(pcie->dbi + PCIE_NO_SRIOV_BAR_BASE);
ls_pcie_ep_setup_atu(pcie, info);
}
}
#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)
{
void __iomem *lut;
lut = pcie->dbi + PCIE_LUT_BASE;
/* leave mask as all zeroes, want to match all bits */
writel((devid << 16), lut + PCIE_LUT_UDR(index));
writel(streamid | PCIE_LUT_ENABLE, lut + 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)
{
char pcie_path[19];
u32 *prop;
u32 phandle;
int nodeoffset;
/* find pci controller node */
snprintf(pcie_path, sizeof(pcie_path), "/soc/pcie@%llx",
(u64)pcie->dbi);
nodeoffset = fdt_path_offset(blob, pcie_path);
if (nodeoffset < 0) {
printf("\n%s: ERROR: unable to update PCIe node: %s\n",
__func__, pcie_path);
return;
}
/* get phandle to MSI controller */
prop = (u32 *)fdt_getprop(blob, nodeoffset, "msi-parent", 0);
if (prop == NULL) {
printf("\n%s: ERROR: missing msi-parent: %s\n", __func__,
pcie_path);
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)
{
unsigned int found_multi = 0;
unsigned char header_type;
int index;
u32 streamid;
pci_dev_t dev, bdf;
int bus;
unsigned short id;
struct pci_controller *hose;
struct ls_pcie *pcie;
int i;
for (i = 0, hose = pci_get_hose_head(); hose; hose = hose->next, i++) {
pcie = hose->priv_data;
for (bus = hose->first_busno; bus <= hose->last_busno; bus++) {
for (dev = PCI_BDF(bus, 0, 0);
dev < PCI_BDF(bus, PCI_MAX_PCI_DEVICES - 1,
PCI_MAX_PCI_FUNCTIONS - 1);
dev += PCI_BDF(0, 0, 1)) {
if (PCI_FUNC(dev) && !found_multi)
continue;
pci_read_config_word(dev, PCI_VENDOR_ID, &id);
pci_read_config_byte(dev, PCI_HEADER_TYPE,
&header_type);
if ((id == 0xFFFF) || (id == 0x0000))
continue;
if (!PCI_FUNC(dev))
found_multi = header_type & 0x80;
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 = dev - PCI_BDF(hose->first_busno, 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
int ls_pcie_init_ctrl(int busno, enum srds_prtcl dev, struct ls_pcie_info *info)
{
struct ls_pcie *pcie;
struct pci_controller *hose;
int num = dev - PCIE1;
pci_dev_t pdev = PCI_BDF(busno, 0, 0);
int i, linkup, ep_mode;
u8 header_type;
u16 temp16;
if (!is_serdes_configured(dev)) {
printf("PCIe%d: disabled\n", num + 1);
return busno;
}
pcie = malloc(sizeof(*pcie));
if (!pcie)
return busno;
memset(pcie, 0, sizeof(*pcie));
hose = &pcie->hose;
hose->priv_data = pcie;
hose->first_busno = busno;
pcie->idx = num;
pcie->dbi = map_physmem(info->regs, PCIE_DBI_SIZE, MAP_NOCACHE);
pcie->va_cfg0 = map_physmem(info->cfg0_phys,
info->cfg0_size,
MAP_NOCACHE);
pcie->va_cfg1 = map_physmem(info->cfg1_phys,
info->cfg1_size,
MAP_NOCACHE);
pcie->next_lut_index = 0;
/* outbound memory */
pci_set_region(&hose->regions[0],
(pci_size_t)info->mem_bus,
(phys_size_t)info->mem_phys,
(pci_size_t)info->mem_size,
PCI_REGION_MEM);
/* outbound io */
pci_set_region(&hose->regions[1],
(pci_size_t)info->io_bus,
(phys_size_t)info->io_phys,
(pci_size_t)info->io_size,
PCI_REGION_IO);
/* System memory space */
pci_set_region(&hose->regions[2],
CONFIG_SYS_PCI_MEMORY_BUS,
CONFIG_SYS_PCI_MEMORY_PHYS,
CONFIG_SYS_PCI_MEMORY_SIZE,
PCI_REGION_SYS_MEMORY);
hose->region_count = 3;
for (i = 0; i < hose->region_count; i++)
debug("PCI reg:%d %016llx:%016llx %016llx %08lx\n",
i,
(u64)hose->regions[i].phys_start,
(u64)hose->regions[i].bus_start,
(u64)hose->regions[i].size,
hose->regions[i].flags);
pci_set_ops(hose,
pci_hose_read_config_byte_via_dword,
pci_hose_read_config_word_via_dword,
ls_pcie_read_config,
pci_hose_write_config_byte_via_dword,
pci_hose_write_config_word_via_dword,
ls_pcie_write_config);
pci_hose_read_config_byte(hose, pdev, PCI_HEADER_TYPE, &header_type);
ep_mode = (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL;
printf("PCIe%u: %s ", info->pci_num,
ep_mode ? "Endpoint" : "Root Complex");
if (ep_mode)
ls_pcie_setup_ep(pcie, info);
else
ls_pcie_setup_ctrl(pcie, info);
linkup = ls_pcie_link_up(pcie);
if (!linkup) {
/* Let the user know there's no PCIe link */
printf("no link, regs @ 0x%lx\n", info->regs);
hose->last_busno = hose->first_busno;
return busno;
}
/* Print the negotiated PCIe link width */
pci_hose_read_config_word(hose, pdev, PCIE_LINK_STA, &temp16);
printf("x%d gen%d, regs @ 0x%lx\n", (temp16 & 0x3f0) >> 4,
(temp16 & 0xf), info->regs);
if (ep_mode)
return busno;
pci_register_hose(hose);
hose->last_busno = pci_hose_scan(hose);
printf("PCIe%x: Bus %02x - %02x\n",
info->pci_num, hose->first_busno, hose->last_busno);
return hose->last_busno + 1;
}
int ls_pcie_init_board(int busno)
{
struct ls_pcie_info info;
#ifdef CONFIG_PCIE1
SET_LS_PCIE_INFO(info, 1);
busno = ls_pcie_init_ctrl(busno, PCIE1, &info);
#endif
#ifdef CONFIG_PCIE2
SET_LS_PCIE_INFO(info, 2);
busno = ls_pcie_init_ctrl(busno, PCIE2, &info);
#endif
#ifdef CONFIG_PCIE3
SET_LS_PCIE_INFO(info, 3);
busno = ls_pcie_init_ctrl(busno, PCIE3, &info);
#endif
#ifdef CONFIG_PCIE4
SET_LS_PCIE_INFO(info, 4);
busno = ls_pcie_init_ctrl(busno, PCIE4, &info);
#endif
return busno;
}
void pci_init_board(void)
{
ls_pcie_init_board(0);
}
#ifdef CONFIG_OF_BOARD_SETUP
#include <libfdt.h>
#include <fdt_support.h>
static void ft_pcie_ls_setup(void *blob, const char *pci_compat,
unsigned long ctrl_addr, enum srds_prtcl dev)
{
int off;
off = fdt_node_offset_by_compat_reg(blob, pci_compat,
(phys_addr_t)ctrl_addr);
if (off < 0)
return;
if (!is_serdes_configured(dev))
fdt_set_node_status(blob, off, FDT_STATUS_DISABLED, 0);
}
void ft_pci_setup(void *blob, bd_t *bd)
{
#ifdef CONFIG_PCIE1
ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE1_ADDR, PCIE1);
#endif
#ifdef CONFIG_PCIE2
ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE2_ADDR, PCIE2);
#endif
#ifdef CONFIG_PCIE3
ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE3_ADDR, PCIE3);
#endif
#ifdef CONFIG_PCIE4
ft_pcie_ls_setup(blob, FSL_PCIE_COMPAT, CONFIG_SYS_PCIE4_ADDR, PCIE4);
#endif
#ifdef CONFIG_FSL_LSCH3
fdt_fixup_pcie(blob);
#endif
}
#else
void ft_pci_setup(void *blob, bd_t *bd)
{
}
#endif