mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
80b5a662b7
Modify the ls_pcie_dump_atu function, make it can print the INBOUND windows registers. Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com> Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
379 lines
9.7 KiB
C
379 lines
9.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2020 NXP
|
|
* Layerscape PCIe driver
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/arch/fsl_serdes.h>
|
|
#include <pci.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;
|
|
|
|
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) < 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;
|
|
}
|
|
|
|
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) == bus->seq) {
|
|
*paddress = pcie->dbi + offset;
|
|
return 0;
|
|
}
|
|
|
|
busdev = PCIE_ATU_BUS(PCI_BUS(bdf) - bus->seq) |
|
|
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_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);
|
|
pcie_rc->stream_id_cur = 0;
|
|
}
|
|
|
|
static int ls_pcie_probe(struct udevice *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_kmalloc(dev, sizeof(*pcie), GFP_KERNEL);
|
|
if (!pcie)
|
|
return -ENOMEM;
|
|
|
|
pcie_rc->pcie = pcie;
|
|
|
|
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->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;
|
|
|
|
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);
|
|
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* 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) {
|
|
cfg_size = fdt_resource_size(&pcie_rc->cfg_res);
|
|
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;
|
|
|
|
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->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 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_rc),
|
|
};
|