mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-26 21:13:48 +00:00
be38416034
In the current code, it doesn't reset the cursors of LUT entry and StreamID at the beginning of the fixup, so it can result in LUT entry setup and msi-map mismatch and LUT entries and StreamID leaking when reload and fixup the DTB. This patch move the initialization of LUT entry and StreamID cursors to the beginning of the fixup to resolve the issues. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> [Rebased] Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
416 lines
11 KiB
C
416 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2020,2021 NXP
|
|
* Layerscape PCIe driver
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/arch/fsl_serdes.h>
|
|
#include <pci.h>
|
|
#include <asm/global_data.h>
|
|
#include <asm/io.h>
|
|
#include <errno.h>
|
|
#include <malloc.h>
|
|
#include <dm.h>
|
|
#include <dm/devres.h>
|
|
#if defined(CONFIG_FSL_LSCH2) || defined(CONFIG_FSL_LSCH3) || \
|
|
defined(CONFIG_ARM)
|
|
#include <asm/arch/clock.h>
|
|
#endif
|
|
#include "pcie_layerscape.h"
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
struct ls_pcie_drvdata {
|
|
u32 lut_offset;
|
|
u32 ctrl_offset;
|
|
bool big_endian;
|
|
};
|
|
|
|
static void ls_pcie_cfg0_set_busdev(struct ls_pcie_rc *pcie_rc, u32 busdev)
|
|
{
|
|
struct ls_pcie *pcie = pcie_rc->pcie;
|
|
|
|
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_rc *pcie_rc, u32 busdev)
|
|
{
|
|
struct ls_pcie *pcie = pcie_rc->pcie;
|
|
|
|
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_setup_atu(struct ls_pcie_rc *pcie_rc)
|
|
{
|
|
struct pci_region *io, *mem, *pref;
|
|
unsigned long long offset = 0;
|
|
struct ls_pcie *pcie = pcie_rc->pcie;
|
|
int idx = 0;
|
|
uint svr;
|
|
|
|
svr = get_svr();
|
|
if (((svr >> SVR_VAR_PER_SHIFT) & SVR_LS102XA_MASK) == SVR_LS102XA) {
|
|
offset = LS1021_PCIE_SPACE_OFFSET +
|
|
LS1021_PCIE_SPACE_SIZE * pcie->idx;
|
|
}
|
|
|
|
/* ATU 0 : OUTBOUND : CFG0 */
|
|
ls_pcie_atu_outbound_set(pcie, PCIE_ATU_REGION_INDEX0,
|
|
PCIE_ATU_TYPE_CFG0,
|
|
pcie_rc->cfg_res.start + offset,
|
|
0,
|
|
fdt_resource_size(&pcie_rc->cfg_res) / 2);
|
|
/* ATU 1 : OUTBOUND : CFG1 */
|
|
ls_pcie_atu_outbound_set(pcie, PCIE_ATU_REGION_INDEX1,
|
|
PCIE_ATU_TYPE_CFG1,
|
|
pcie_rc->cfg_res.start + offset +
|
|
fdt_resource_size(&pcie_rc->cfg_res) / 2,
|
|
0,
|
|
fdt_resource_size(&pcie_rc->cfg_res) / 2);
|
|
|
|
pci_get_regions(pcie_rc->bus, &io, &mem, &pref);
|
|
idx = PCIE_ATU_REGION_INDEX1 + 1;
|
|
|
|
/* Fix the pcie memory map for LS2088A series SoCs */
|
|
svr = (svr >> SVR_VAR_PER_SHIFT) & 0xFFFFFE;
|
|
if (svr == SVR_LS2088A || svr == SVR_LS2084A ||
|
|
svr == SVR_LS2048A || svr == SVR_LS2044A ||
|
|
svr == SVR_LS2081A || svr == SVR_LS2041A) {
|
|
if (io)
|
|
io->phys_start = (io->phys_start &
|
|
(PCIE_PHYS_SIZE - 1)) +
|
|
LS2088A_PCIE1_PHYS_ADDR +
|
|
LS2088A_PCIE_PHYS_SIZE * pcie->idx;
|
|
if (mem)
|
|
mem->phys_start = (mem->phys_start &
|
|
(PCIE_PHYS_SIZE - 1)) +
|
|
LS2088A_PCIE1_PHYS_ADDR +
|
|
LS2088A_PCIE_PHYS_SIZE * pcie->idx;
|
|
if (pref)
|
|
pref->phys_start = (pref->phys_start &
|
|
(PCIE_PHYS_SIZE - 1)) +
|
|
LS2088A_PCIE1_PHYS_ADDR +
|
|
LS2088A_PCIE_PHYS_SIZE * pcie->idx;
|
|
}
|
|
|
|
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, PCIE_ATU_REGION_NUM, PCIE_ATU_REGION_OUTBOUND);
|
|
}
|
|
|
|
/* Return 0 if the address is valid, -errno if not valid */
|
|
static int ls_pcie_addr_valid(struct ls_pcie_rc *pcie_rc, pci_dev_t bdf)
|
|
{
|
|
struct udevice *bus = pcie_rc->bus;
|
|
struct ls_pcie *pcie = pcie_rc->pcie;
|
|
|
|
if (pcie->mode == PCI_HEADER_TYPE_NORMAL)
|
|
return -ENODEV;
|
|
|
|
if (!pcie_rc->enabled)
|
|
return -ENXIO;
|
|
|
|
if (PCI_BUS(bdf) < dev_seq(bus))
|
|
return -EINVAL;
|
|
|
|
if ((PCI_BUS(bdf) > dev_seq(bus)) && (!ls_pcie_link_up(pcie)))
|
|
return -EINVAL;
|
|
|
|
if (PCI_BUS(bdf) <= (dev_seq(bus) + 1) && (PCI_DEV(bdf) > 0))
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ls_pcie_conf_address(const struct udevice *bus, pci_dev_t bdf,
|
|
uint offset, void **paddress)
|
|
{
|
|
struct ls_pcie_rc *pcie_rc = dev_get_priv(bus);
|
|
struct ls_pcie *pcie = pcie_rc->pcie;
|
|
u32 busdev;
|
|
|
|
if (ls_pcie_addr_valid(pcie_rc, bdf))
|
|
return -EINVAL;
|
|
|
|
if (PCI_BUS(bdf) == dev_seq(bus)) {
|
|
*paddress = pcie->dbi + offset;
|
|
return 0;
|
|
}
|
|
|
|
busdev = PCIE_ATU_BUS(PCI_BUS(bdf) - dev_seq(bus)) |
|
|
PCIE_ATU_DEV(PCI_DEV(bdf)) |
|
|
PCIE_ATU_FUNC(PCI_FUNC(bdf));
|
|
|
|
if (PCI_BUS(bdf) == dev_seq(bus) + 1) {
|
|
ls_pcie_cfg0_set_busdev(pcie_rc, busdev);
|
|
*paddress = pcie_rc->cfg0 + offset;
|
|
} else {
|
|
ls_pcie_cfg1_set_busdev(pcie_rc, busdev);
|
|
*paddress = pcie_rc->cfg1 + offset;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int ls_pcie_read_config(const struct udevice *bus, pci_dev_t bdf,
|
|
uint offset, ulong *valuep,
|
|
enum pci_size_t size)
|
|
{
|
|
return pci_generic_mmap_read_config(bus, ls_pcie_conf_address,
|
|
bdf, offset, valuep, size);
|
|
}
|
|
|
|
static int ls_pcie_write_config(struct udevice *bus, pci_dev_t bdf,
|
|
uint offset, ulong value,
|
|
enum pci_size_t size)
|
|
{
|
|
return pci_generic_mmap_write_config(bus, ls_pcie_conf_address,
|
|
bdf, offset, value, size);
|
|
}
|
|
|
|
/* Clear multi-function bit */
|
|
static void ls_pcie_clear_multifunction(struct ls_pcie_rc *pcie_rc)
|
|
{
|
|
struct ls_pcie *pcie = pcie_rc->pcie;
|
|
|
|
writeb(PCI_HEADER_TYPE_BRIDGE, pcie->dbi + PCI_HEADER_TYPE);
|
|
}
|
|
|
|
/* Fix class value */
|
|
static void ls_pcie_fix_class(struct ls_pcie_rc *pcie_rc)
|
|
{
|
|
struct ls_pcie *pcie = pcie_rc->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_rc *pcie_rc)
|
|
{
|
|
struct ls_pcie *pcie = pcie_rc->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_rc *pcie_rc)
|
|
{
|
|
struct ls_pcie *pcie = pcie_rc->pcie;
|
|
|
|
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, 0xfffffffe, PCIE_CS2_OFFSET + PCI_ROM_ADDRESS1);
|
|
}
|
|
|
|
static void ls_pcie_setup_ctrl(struct ls_pcie_rc *pcie_rc)
|
|
{
|
|
struct ls_pcie *pcie = pcie_rc->pcie;
|
|
|
|
ls_pcie_setup_atu(pcie_rc);
|
|
|
|
ls_pcie_dbi_ro_wr_en(pcie);
|
|
ls_pcie_fix_class(pcie_rc);
|
|
ls_pcie_clear_multifunction(pcie_rc);
|
|
ls_pcie_drop_msg_tlp(pcie_rc);
|
|
ls_pcie_dbi_ro_wr_dis(pcie);
|
|
|
|
ls_pcie_disable_bars(pcie_rc);
|
|
}
|
|
|
|
static int ls_pcie_probe(struct udevice *dev)
|
|
{
|
|
const struct ls_pcie_drvdata *drvdata = (void *)dev_get_driver_data(dev);
|
|
struct ls_pcie_rc *pcie_rc = dev_get_priv(dev);
|
|
const void *fdt = gd->fdt_blob;
|
|
int node = dev_of_offset(dev);
|
|
struct ls_pcie *pcie;
|
|
u16 link_sta;
|
|
uint svr;
|
|
int ret;
|
|
fdt_size_t cfg_size;
|
|
|
|
pcie_rc->bus = dev;
|
|
|
|
pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
|
|
if (!pcie)
|
|
return -ENOMEM;
|
|
|
|
pcie_rc->pcie = pcie;
|
|
|
|
/* try resource name of the official binding first */
|
|
ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
|
|
"regs", &pcie_rc->dbi_res);
|
|
if (ret)
|
|
ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
|
|
"dbi", &pcie_rc->dbi_res);
|
|
if (ret) {
|
|
printf("ls-pcie: resource \"dbi\" not found\n");
|
|
return ret;
|
|
}
|
|
|
|
pcie->idx = (pcie_rc->dbi_res.start - PCIE_SYS_BASE_ADDR) /
|
|
PCIE_CCSR_SIZE;
|
|
|
|
list_add(&pcie_rc->list, &ls_pcie_list);
|
|
|
|
pcie_rc->enabled = is_serdes_configured(PCIE_SRDS_PRTCL(pcie->idx));
|
|
if (!pcie_rc->enabled) {
|
|
printf("PCIe%d: %s disabled\n", PCIE_SRDS_PRTCL(pcie->idx),
|
|
dev->name);
|
|
return 0;
|
|
}
|
|
|
|
pcie->dbi = map_physmem(pcie_rc->dbi_res.start,
|
|
fdt_resource_size(&pcie_rc->dbi_res),
|
|
MAP_NOCACHE);
|
|
|
|
pcie->mode = readb(pcie->dbi + PCI_HEADER_TYPE) & 0x7f;
|
|
if (pcie->mode == PCI_HEADER_TYPE_NORMAL)
|
|
return 0;
|
|
|
|
if (drvdata) {
|
|
pcie->lut = pcie->dbi + drvdata->lut_offset;
|
|
} else {
|
|
ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
|
|
"lut", &pcie_rc->lut_res);
|
|
if (!ret)
|
|
pcie->lut = map_physmem(pcie_rc->lut_res.start,
|
|
fdt_resource_size(&pcie_rc->lut_res),
|
|
MAP_NOCACHE);
|
|
}
|
|
|
|
if (drvdata) {
|
|
pcie->ctrl = pcie->lut + drvdata->ctrl_offset;
|
|
} else {
|
|
ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
|
|
"ctrl", &pcie_rc->ctrl_res);
|
|
if (!ret)
|
|
pcie->ctrl = map_physmem(pcie_rc->ctrl_res.start,
|
|
fdt_resource_size(&pcie_rc->ctrl_res),
|
|
MAP_NOCACHE);
|
|
if (!pcie->ctrl)
|
|
pcie->ctrl = pcie->lut;
|
|
}
|
|
|
|
if (!pcie->ctrl) {
|
|
printf("%s: NOT find CTRL\n", dev->name);
|
|
return -1;
|
|
}
|
|
|
|
ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
|
|
"config", &pcie_rc->cfg_res);
|
|
if (ret) {
|
|
printf("%s: resource \"config\" not found\n", dev->name);
|
|
return ret;
|
|
}
|
|
|
|
cfg_size = fdt_resource_size(&pcie_rc->cfg_res);
|
|
if (cfg_size < SZ_8K) {
|
|
printf("PCIe%d: %s Invalid size(0x%llx) for resource \"config\",expected minimum 0x%x\n",
|
|
PCIE_SRDS_PRTCL(pcie->idx), dev->name, (u64)cfg_size, SZ_8K);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Fix the pcie memory map address and PF control registers address
|
|
* for LS2088A series SoCs
|
|
*/
|
|
svr = get_svr();
|
|
svr = (svr >> SVR_VAR_PER_SHIFT) & 0xFFFFFE;
|
|
if (svr == SVR_LS2088A || svr == SVR_LS2084A ||
|
|
svr == SVR_LS2048A || svr == SVR_LS2044A ||
|
|
svr == SVR_LS2081A || svr == SVR_LS2041A) {
|
|
pcie_rc->cfg_res.start = LS2088A_PCIE1_PHYS_ADDR +
|
|
LS2088A_PCIE_PHYS_SIZE * pcie->idx;
|
|
pcie_rc->cfg_res.end = pcie_rc->cfg_res.start + cfg_size;
|
|
pcie->ctrl = pcie->lut + 0x40000;
|
|
}
|
|
|
|
pcie_rc->cfg0 = map_physmem(pcie_rc->cfg_res.start,
|
|
fdt_resource_size(&pcie_rc->cfg_res),
|
|
MAP_NOCACHE);
|
|
pcie_rc->cfg1 = pcie_rc->cfg0 +
|
|
fdt_resource_size(&pcie_rc->cfg_res) / 2;
|
|
|
|
if (drvdata)
|
|
pcie->big_endian = drvdata->big_endian;
|
|
else
|
|
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_rc->cfg0,
|
|
pcie->big_endian);
|
|
|
|
printf("PCIe%u: %s %s", PCIE_SRDS_PRTCL(pcie->idx), dev->name,
|
|
"Root Complex");
|
|
ls_pcie_setup_ctrl(pcie_rc);
|
|
|
|
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 & PCIE_LINK_WIDTH_MASK) >> 4,
|
|
link_sta & PCIE_LINK_SPEED_MASK);
|
|
|
|
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 ls_pcie_drvdata ls1028a_drvdata = {
|
|
.lut_offset = 0x80000,
|
|
.ctrl_offset = 0x40000,
|
|
.big_endian = false,
|
|
};
|
|
|
|
static const struct udevice_id ls_pcie_ids[] = {
|
|
{ .compatible = "fsl,ls-pcie" },
|
|
{ .compatible = "fsl,ls1028a-pcie", .data = (ulong)&ls1028a_drvdata },
|
|
{ }
|
|
};
|
|
|
|
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 = sizeof(struct ls_pcie_rc),
|
|
};
|