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u-boot/drivers/pci/pcie_ecam_synquacer.c
Pali Rohár a4bc38da27 pci: Add standard PCIe ECAM macros 
Lot of PCIe controllers are using ECAM addressing. So add common ECAM
macros into U-Boot's pci.h header file which can be suitable for most
PCI controller drivers.

Replace custom ECAM address macros in every PCI controller driver by new
ECAM macros from U-Boot's pci.h header file.

Similar macros are defined also in Linux kernel. There is a small
difference between Linux and these new U-Boot macros.

U-Boot's PCIE_ECAM_OFFSET() takes device and function numbers in separate
arguments. Linux's PCIE_ECAM_OFFSET() takes device and function numbers
encoded in one argument. The reason is that U-Boot's PCI_DEVFN() macro is
different than Linux's PCI_SLOT() macro. So having device and function
numbers in separate arguments makes code more straightforward.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2021-11-17 17:04:58 -05:00

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// SPDX-License-Identifier: GPL-2.0
/*
* SynQuacer PCIE host driver
*
* Based on drivers/pci/pcie_ecam_generic.c
*
* Copyright (C) 2016 Imagination Technologies
* Copyright (C) 2021 Linaro Ltd.
*/
#include <common.h>
#include <dm.h>
#include <pci.h>
#include <log.h>
#include <asm/io.h>
#include <linux/bitops.h>
#include <linux/delay.h>
/* iATU registers */
#define IATU_VIEWPORT_OFF 0x900
#define IATU_VIEWPORT_INBOUND BIT(31)
#define IATU_VIEWPORT_OUTBOUND 0
#define IATU_VIEWPORT_REGION_INDEX(idx) ((idx) & 7)
#define IATU_REGION_CTRL_1_OFF_OUTBOUND_0 0x904
#define IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TYPE_MEM 0x0
#define IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TYPE_IO 0x2
#define IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TYPE_CFG0 0x4
#define IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TYPE_CFG1 0x5
#define IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TH BIT(12)
#define IATU_REGION_CTRL_2_OFF_OUTBOUND_0 0x908
#define IATU_REGION_CTRL_2_OFF_OUTBOUND_0_REGION_EN BIT(31)
#define IATU_REGION_CTRL_2_OFF_OUTBOUND_0_CFG_SHIFT_MODE BIT(28)
#define IATU_REGION_CTRL_2_OFF_OUTBOUND_0_MSG_CODE_32BIT 0xF
#define IATU_REGION_CTRL_2_OFF_OUTBOUND_0_MSG_CODE_64BIT 0xFF
#define IATU_LWR_BASE_ADDR_OFF_OUTBOUND_0 0x90C
#define IATU_UPPER_BASE_ADDR_OFF_OUTBOUND_0 0x910
#define IATU_LIMIT_ADDR_OFF_OUTBOUND_0 0x914
#define IATU_LWR_TARGET_ADDR_OFF_OUTBOUND_0 0x918
#define IATU_UPPER_TARGET_ADDR_OFF_OUTBOUND_0 0x91C
/* Clock and resets */
#define CORE_CONTROL 0x000
#define APP_LTSSM_ENABLE BIT(4)
#define DEVICE_TYPE (BIT(3) | BIT(2) | BIT(1) | BIT(0))
#define AXI_CLK_STOP 0x004
#define DBI_ACLK_STOP BIT(8)
#define SLV_ACLK_STOP BIT(4)
#define MSTR_ACLK_STOP BIT(0)
#define DBI_CSYSREQ_REG BIT(9)
#define SLV_CSYSREQ_REG BIT(5)
#define MSTR_CSYSREQ_REG BIT(1)
#define RESET_CONTROL_1 0x00C
#define PERST_N_O_REG BIT(5)
#define PERST_N_I_REG BIT(4)
#define BUTTON_RST_N_REG BIT(1)
#define PWUP_RST_N_REG BIT(0)
#define RESET_CONTROL_2 0x010
#define RESET_SELECT_1 0x014
#define SQU_RST_SEL BIT(29)
#define PHY_RST_SEL BIT(28)
#define PWR_RST_SEL BIT(24)
#define STI_RST_SEL BIT(20)
#define N_STI_RST_SEL BIT(16)
#define CORE_RST_SEL BIT(12)
#define PERST_SEL BIT(4)
#define BUTTON_RST_SEL BIT(1)
#define PWUP_RST_SEL BIT(0)
#define RESET_SELECT_2 0x018
#define DBI_ARST_SEL BIT(8)
#define SLV_ARST_SEL BIT(4)
#define MSTR_ARST_SEL BIT(0)
#define EM_CONTROL 0x030
#define PRE_DET_STT_REG BIT(4)
#define EM_SELECT 0x034
#define PRE_DET_STT_SEL BIT(4)
#define PM_CONTROL_2 0x050
#define SYS_AUX_PWR_DET BIT(8)
#define PHY_CONFIG_COM_6 0x114
#define PIPE_PORT_SEL GENMASK(1, 0)
#define LINK_MONITOR 0x210
#define SMLH_LINK_UP BIT(0)
#define LINK_CAPABILITIES_REG 0x07C
#define PCIE_CAP_MAX_LINK_WIDTH GENMASK(7, 4)
#define PCIE_CAP_MAX_LINK_SPEED GENMASK(3, 0)
#define LINK_CONTROL_LINK_STATUS_REG 0x080
#define PCIE_CAP_NEGO_LINK_WIDTH GENMASK(23, 20)
#define PCIE_CAP_LINK_SPEED GENMASK(19, 16)
#define TYPE1_CLASS_CODE_REV_ID_REG 0x008
#define BASE_CLASS_CODE 0xFF000000
#define BASE_CLASS_CODE_VALUE 0x06
#define SUBCLASS_CODE 0x00FF0000
#define SUBCLASS_CODE_VALUE 0x04
#define PROGRAM_INTERFACE 0x0000FF00
#define PROGRAM_INTERFACE_VALUE 0x00
#define GEN2_CONTROL_OFF 0x80c
#define DIRECT_SPEED_CHANGE BIT(17)
#define MISC_CONTROL_1_OFF 0x8BC
#define DBI_RO_WR_EN BIT(0)
static void or_writel(void *base, u32 offs, u32 val)
{
writel(readl(base + offs) | val, base + offs);
}
static void masked_writel(void *base, u32 offs, u32 mask, u32 val)
{
u32 data;
int shift = ffs(mask); /* Note that ffs() returns 1 for 0x1 */
if (val && shift > 1)
val <<= shift - 1;
if (mask != ~0)
data = (readl(base + offs) & ~mask) | val;
else
data = val;
writel(data, base + offs);
}
static u32 masked_readl(void *base, u32 offs, u32 mask)
{
u32 data;
int shift = ffs(mask); /* Note that ffs() returns 1 for 0x1 */
data = readl(base + offs);
if (mask != ~0)
data &= mask;
if (shift > 1)
data >>= shift - 1;
return data;
}
/*
* Since SynQuacer's PCIe RC is expected to be initialized in the
* firmware (including U-Boot), devicetree doesn't have control
* blocks.
*
* Thus, this will initialize the PCIe RC with fixed addresses.
*/
#define SYNQUACER_PCI_SEG0_CONFIG_BASE 0x60000000
#define SYNQUACER_PCI_SEG0_CONFIG_SIZE 0x07f00000
#define SYNQUACER_PCI_SEG0_DBI_BASE 0x583d0000
#define SYNQUACER_PCI_SEG0_EXS_BASE 0x58390000
#define SYNQUACER_PCI_SEG1_CONFIG_BASE 0x70000000
#define SYNQUACER_PCI_SEG1_CONFIG_SIZE 0x07f00000
#define SYNQUACER_PCI_SEG1_DBI_BASE 0x583c0000
#define SYNQUACER_PCI_SEG1_EXS_BASE 0x58380000
#define SIZE_16KB 0x00004000
#define SIZE_64KB 0x00010000
#define SIZE_1MB 0x00100000
#define SYNQUACER_PCI_DBI_SIZE SIZE_16KB
#define SYNQUACER_PCI_EXS_SIZE SIZE_64KB
#define NUM_SQ_PCI_RC 2
static const struct synquacer_pcie_base {
phys_addr_t cfg_base;
phys_addr_t dbi_base;
phys_addr_t exs_base;
} synquacer_pci_bases[NUM_SQ_PCI_RC] = {
{
.cfg_base = SYNQUACER_PCI_SEG0_CONFIG_BASE,
.dbi_base = SYNQUACER_PCI_SEG0_DBI_BASE,
.exs_base = SYNQUACER_PCI_SEG0_EXS_BASE,
}, {
.cfg_base = SYNQUACER_PCI_SEG1_CONFIG_BASE,
.dbi_base = SYNQUACER_PCI_SEG1_DBI_BASE,
.exs_base = SYNQUACER_PCI_SEG1_EXS_BASE,
},
};
/**
* struct synquacer_ecam_pcie - synquacer_ecam PCIe controller state
* @cfg_base: The base address of memory mapped configuration space
*/
struct synquacer_ecam_pcie {
void *cfg_base;
pci_size_t size;
void *dbi_base;
void *exs_base;
int first_busno;
struct pci_region mem;
struct pci_region io;
struct pci_region mem64;
};
DECLARE_GLOBAL_DATA_PTR;
/**
* pci_synquacer_ecam_conf_address() - Calculate the address of a config access
* @bus: Pointer to the PCI bus
* @bdf: Identifies the PCIe device to access
* @offset: The offset into the device's configuration space
* @paddress: Pointer to the pointer to write the calculates address to
*
* Calculates the address that should be accessed to perform a PCIe
* configuration space access for a given device identified by the PCIe
* controller device @pcie and the bus, device & function numbers in @bdf. If
* access to the device is not valid then the function will return an error
* code. Otherwise the address to access will be written to the pointer pointed
* to by @paddress.
*/
static int pci_synquacer_ecam_conf_address(const struct udevice *bus,
pci_dev_t bdf, uint offset,
void **paddress)
{
struct synquacer_ecam_pcie *pcie = dev_get_priv(bus);
void *addr;
addr = pcie->cfg_base;
addr += PCIE_ECAM_OFFSET(PCI_BUS(bdf) - pcie->first_busno,
PCI_DEV(bdf), PCI_FUNC(bdf), offset);
*paddress = addr;
return 0;
}
static bool pci_synquacer_ecam_addr_valid(const struct udevice *bus,
pci_dev_t bdf)
{
struct synquacer_ecam_pcie *pcie = dev_get_priv(bus);
int num_buses = DIV_ROUND_UP(pcie->size, 1 << 16);
/*
* The Synopsys DesignWare PCIe controller in ECAM mode will not filter
* type 0 config TLPs sent to devices 1 and up on its downstream port,
* resulting in devices appearing multiple times on bus 0 unless we
* filter out those accesses here.
*/
if (PCI_BUS(bdf) == pcie->first_busno && PCI_DEV(bdf) > 0)
return false;
return (PCI_BUS(bdf) >= pcie->first_busno &&
PCI_BUS(bdf) < pcie->first_busno + num_buses);
}
/**
* pci_synquacer_ecam_read_config() - Read from configuration space
* @bus: Pointer to the PCI bus
* @bdf: Identifies the PCIe device to access
* @offset: The offset into the device's configuration space
* @valuep: A pointer at which to store the read value
* @size: Indicates the size of access to perform
*
* Read a value of size @size from offset @offset within the configuration
* space of the device identified by the bus, device & function numbers in @bdf
* on the PCI bus @bus.
*/
static int pci_synquacer_ecam_read_config(const struct udevice *bus,
pci_dev_t bdf, uint offset,
ulong *valuep, enum pci_size_t size)
{
if (!pci_synquacer_ecam_addr_valid(bus, bdf)) {
*valuep = pci_get_ff(size);
return 0;
}
return pci_generic_mmap_read_config(bus, pci_synquacer_ecam_conf_address,
bdf, offset, valuep, size);
}
/**
* pci_synquacer_ecam_write_config() - Write to configuration space
* @bus: Pointer to the PCI bus
* @bdf: Identifies the PCIe device to access
* @offset: The offset into the device's configuration space
* @value: The value to write
* @size: Indicates the size of access to perform
*
* Write the value @value of size @size from offset @offset within the
* configuration space of the device identified by the bus, device & function
* numbers in @bdf on the PCI bus @bus.
*/
static int pci_synquacer_ecam_write_config(struct udevice *bus, pci_dev_t bdf,
uint offset, ulong value,
enum pci_size_t size)
{
if (!pci_synquacer_ecam_addr_valid(bus, bdf))
return 0;
return pci_generic_mmap_write_config(bus, pci_synquacer_ecam_conf_address,
bdf, offset, value, size);
}
/**
* pci_synquacer_ecam_of_to_plat() - Translate from DT to device state
* @dev: A pointer to the device being operated on
*
* Translate relevant data from the device tree pertaining to device @dev into
* state that the driver will later make use of. This state is stored in the
* device's private data structure.
*
* Return: 0 on success, else -EINVAL
*/
static int pci_synquacer_ecam_of_to_plat(struct udevice *dev)
{
struct synquacer_ecam_pcie *pcie = dev_get_priv(dev);
struct fdt_resource reg_res;
int i, err;
debug("%s: called for %s\n", __func__, dev->name);
err = fdt_get_resource(gd->fdt_blob, dev_of_offset(dev), "reg",
0, &reg_res);
if (err < 0) {
pr_err("\"reg\" resource not found\n");
return err;
}
/* Find the correct pair of the DBI/EXS base address */
for (i = 0; i < NUM_SQ_PCI_RC; i++) {
if (synquacer_pci_bases[i].cfg_base == reg_res.start)
break;
}
if (i == NUM_SQ_PCI_RC) {
pr_err("Unknown ECAM base address %lx.\n",
(unsigned long)reg_res.start);
return -ENOENT;
}
pcie->dbi_base = map_physmem(synquacer_pci_bases[i].dbi_base,
SYNQUACER_PCI_DBI_SIZE, MAP_NOCACHE);
if (!pcie->dbi_base) {
pr_err("Failed to map DBI for %s\n", dev->name);
return -ENOMEM;
}
pcie->exs_base = map_physmem(synquacer_pci_bases[i].exs_base,
SYNQUACER_PCI_EXS_SIZE, MAP_NOCACHE);
if (!pcie->exs_base) {
pr_err("Failed to map EXS for %s\n", dev->name);
return -ENOMEM;
}
pcie->size = fdt_resource_size(&reg_res);
pcie->cfg_base = map_physmem(reg_res.start, pcie->size, MAP_NOCACHE);
if (!pcie->cfg_base) {
pr_err("Failed to map config space for %s\n", dev->name);
return -ENOMEM;
}
debug("mappings DBI: %p EXS: %p CFG: %p\n", pcie->dbi_base, pcie->exs_base, pcie->cfg_base);
return 0;
}
static void pci_synquacer_pre_init(struct synquacer_ecam_pcie *pcie)
{
void *base = pcie->exs_base;
masked_writel(base, EM_SELECT, PRE_DET_STT_SEL, 0);
masked_writel(base, EM_CONTROL, PRE_DET_STT_REG, 0);
masked_writel(base, EM_CONTROL, PRE_DET_STT_REG, 1);
/* 1: Assert all PHY / LINK resets */
masked_writel(base, RESET_SELECT_1, PERST_SEL, 0);
masked_writel(base, RESET_CONTROL_1, PERST_N_I_REG, 0);
masked_writel(base, RESET_CONTROL_1, PERST_N_O_REG, 0);
/* Device Reset(PERST#) is effective afrer Set device_type (RC) */
masked_writel(base, RESET_SELECT_1, PWUP_RST_SEL, 0);
masked_writel(base, RESET_CONTROL_1, PWUP_RST_N_REG, 0);
masked_writel(base, RESET_SELECT_1, BUTTON_RST_SEL, 0);
masked_writel(base, RESET_CONTROL_1, BUTTON_RST_N_REG, 0);
masked_writel(base, RESET_SELECT_1, PWR_RST_SEL, 1);
masked_writel(base, RESET_SELECT_2, MSTR_ARST_SEL, 1);
masked_writel(base, RESET_SELECT_2, SLV_ARST_SEL, 1);
masked_writel(base, RESET_SELECT_2, DBI_ARST_SEL, 1);
masked_writel(base, RESET_SELECT_1, CORE_RST_SEL, 1);
masked_writel(base, RESET_SELECT_1, STI_RST_SEL, 1);
masked_writel(base, RESET_SELECT_1, N_STI_RST_SEL, 1);
masked_writel(base, RESET_SELECT_1, SQU_RST_SEL, 1);
masked_writel(base, RESET_SELECT_1, PHY_RST_SEL, 1);
/* 2: Set P<n>_app_ltssm_enable='0' for reprogramming before linkup. */
masked_writel(base, CORE_CONTROL, APP_LTSSM_ENABLE, 0);
/* 3: Set device_type (RC) */
masked_writel(base, CORE_CONTROL, DEVICE_TYPE, 4);
}
static void pci_synquacer_dbi_init(void *dbi_base)
{
masked_writel(dbi_base, MISC_CONTROL_1_OFF, DBI_RO_WR_EN, 1);
/* 4 Lanes */
masked_writel(dbi_base, LINK_CAPABILITIES_REG,
PCIE_CAP_MAX_LINK_WIDTH, 4);
/* Gen 2 */
masked_writel(dbi_base, LINK_CAPABILITIES_REG,
PCIE_CAP_MAX_LINK_SPEED, 2);
masked_writel(dbi_base, TYPE1_CLASS_CODE_REV_ID_REG,
BASE_CLASS_CODE, BASE_CLASS_CODE_VALUE);
masked_writel(dbi_base, TYPE1_CLASS_CODE_REV_ID_REG,
SUBCLASS_CODE, SUBCLASS_CODE_VALUE);
masked_writel(dbi_base, TYPE1_CLASS_CODE_REV_ID_REG,
PROGRAM_INTERFACE, PROGRAM_INTERFACE_VALUE);
masked_writel(dbi_base, MISC_CONTROL_1_OFF, DBI_RO_WR_EN, 0);
}
static void pcie_sq_prog_outbound_atu(void *dbi_base, int index,
u64 cpu_base, u64 pci_base, u64 size,
u32 type, u32 flags)
{
debug("%s: %p, %d, %llx, %llx, %llx, %x, %x\n", __func__,
dbi_base, index, cpu_base, pci_base, size, type, flags);
writel(IATU_VIEWPORT_OUTBOUND | IATU_VIEWPORT_REGION_INDEX(index),
dbi_base + IATU_VIEWPORT_OFF);
writel((u32)(cpu_base & 0xffffffff),
dbi_base + IATU_LWR_BASE_ADDR_OFF_OUTBOUND_0);
writel((u32)(cpu_base >> 32),
dbi_base + IATU_UPPER_BASE_ADDR_OFF_OUTBOUND_0);
writel((u32)(cpu_base + size - 1),
dbi_base + IATU_LIMIT_ADDR_OFF_OUTBOUND_0);
writel((u32)(pci_base & 0xffffffff),
dbi_base + IATU_LWR_TARGET_ADDR_OFF_OUTBOUND_0);
writel((u32)(pci_base >> 32),
dbi_base + IATU_UPPER_TARGET_ADDR_OFF_OUTBOUND_0);
writel(type, dbi_base + IATU_REGION_CTRL_1_OFF_OUTBOUND_0);
writel(IATU_REGION_CTRL_2_OFF_OUTBOUND_0_REGION_EN | flags,
dbi_base + IATU_REGION_CTRL_2_OFF_OUTBOUND_0);
}
static void pci_synquacer_post_init(struct synquacer_ecam_pcie *pcie)
{
void *base = pcie->exs_base;
/*
* 4: Set Bifurcation 1=disable 4=able
* 5: Supply Reference (It has executed)
* 6: Wait for 10usec (Reference Clocks is stable)
* 7: De assert PERST#
*/
masked_writel(base, RESET_CONTROL_1, PERST_N_I_REG, 1);
masked_writel(base, RESET_CONTROL_1, PERST_N_O_REG, 1);
/* 8: Assert SYS_AUX_PWR_DET */
masked_writel(base, PM_CONTROL_2, SYS_AUX_PWR_DET, 1);
/* 9: Supply following clocks */
masked_writel(base, AXI_CLK_STOP, MSTR_CSYSREQ_REG, 1);
masked_writel(base, AXI_CLK_STOP, MSTR_ACLK_STOP, 0);
masked_writel(base, AXI_CLK_STOP, SLV_CSYSREQ_REG, 1);
masked_writel(base, AXI_CLK_STOP, SLV_ACLK_STOP, 0);
masked_writel(base, AXI_CLK_STOP, DBI_CSYSREQ_REG, 1);
masked_writel(base, AXI_CLK_STOP, DBI_ACLK_STOP, 0);
/*
* 10: De assert PHY reset
* 11: De assert LINK's PMC reset
*/
masked_writel(base, RESET_CONTROL_1, PWUP_RST_N_REG, 1);
masked_writel(base, RESET_CONTROL_1, BUTTON_RST_N_REG, 1);
/* 12: PHY auto
* 13: Wrapper auto
* 14-17: PHY auto
* 18: Wrapper auto
* 19: Update registers through DBI AXI Slave interface
*/
pci_synquacer_dbi_init(pcie->dbi_base);
or_writel(pcie->dbi_base, PCI_COMMAND,
PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
/* Force link speed change to Gen2 at link up */
or_writel(pcie->dbi_base, GEN2_CONTROL_OFF, DIRECT_SPEED_CHANGE);
/* Region 0: MMIO32 range */
pcie_sq_prog_outbound_atu(pcie->dbi_base, 0,
pcie->mem.phys_start,
pcie->mem.bus_start,
pcie->mem.size,
IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TYPE_MEM |
IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TH,
IATU_REGION_CTRL_2_OFF_OUTBOUND_0_MSG_CODE_32BIT);
/* Region 1: Type 0 config space */
pcie_sq_prog_outbound_atu(pcie->dbi_base, 1,
(u64)pcie->cfg_base,
0,
SIZE_64KB,
IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TYPE_CFG0,
IATU_REGION_CTRL_2_OFF_OUTBOUND_0_CFG_SHIFT_MODE);
/* Region 2: Type 1 config space */
pcie_sq_prog_outbound_atu(pcie->dbi_base, 2,
(u64)pcie->cfg_base + SIZE_64KB,
0,
(u64)pcie->io.phys_start - (u64)pcie->cfg_base - SIZE_64KB,
IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TYPE_CFG1,
IATU_REGION_CTRL_2_OFF_OUTBOUND_0_CFG_SHIFT_MODE);
/* Region 3: port I/O range */
pcie_sq_prog_outbound_atu(pcie->dbi_base, 3,
pcie->io.phys_start,
pcie->io.bus_start,
pcie->io.size,
IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TYPE_IO,
0);
/* Region 4: MMIO64 range */
pcie_sq_prog_outbound_atu(pcie->dbi_base, 4,
pcie->mem64.phys_start,
pcie->mem64.bus_start,
pcie->mem64.size,
IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TYPE_MEM |
IATU_REGION_CTRL_1_OFF_OUTBOUND_0_TH,
IATU_REGION_CTRL_2_OFF_OUTBOUND_0_MSG_CODE_32BIT);
/* enable link */
if (masked_readl(base, CORE_CONTROL, APP_LTSSM_ENABLE) == 0)
masked_writel(base, CORE_CONTROL, APP_LTSSM_ENABLE, 1);
}
static int pci_synquacer_ecam_probe(struct udevice *dev)
{
struct synquacer_ecam_pcie *pcie = dev_get_priv(dev);
struct udevice *ctlr = pci_get_controller(dev);
struct pci_controller *hose = dev_get_uclass_priv(ctlr);
debug("Probe synquacer pcie for bus %d\n", dev_seq(dev));
pcie->first_busno = dev_seq(dev);
/* Store the IO and MEM windows settings for configuring ATU */
pcie->io.phys_start = hose->regions[0].phys_start; /* IO base */
pcie->io.bus_start = hose->regions[0].bus_start; /* IO_bus_addr */
pcie->io.size = hose->regions[0].size; /* IO size */
pcie->mem.phys_start = hose->regions[1].phys_start; /* MEM base */
pcie->mem.bus_start = hose->regions[1].bus_start; /* MEM_bus_addr */
pcie->mem.size = hose->regions[1].size; /* MEM size */
pcie->mem64.phys_start = hose->regions[2].phys_start; /* MEM64 base */
pcie->mem64.bus_start = hose->regions[2].bus_start; /* MEM64_bus_addr */
pcie->mem64.size = hose->regions[2].size; /* MEM64 size */
pci_synquacer_pre_init(pcie);
mdelay(150);
pci_synquacer_post_init(pcie);
/* It takes a while to stabilize the PCIe bus for scanning */
mdelay(100);
return 0;
}
static const struct dm_pci_ops pci_synquacer_ecam_ops = {
.read_config = pci_synquacer_ecam_read_config,
.write_config = pci_synquacer_ecam_write_config,
};
static const struct udevice_id pci_synquacer_ecam_ids[] = {
{ .compatible = "socionext,synquacer-pcie-ecam" },
{ }
};
U_BOOT_DRIVER(pci_synquacer_ecam) = {
.name = "pci_synquacer_ecam",
.id = UCLASS_PCI,
.of_match = pci_synquacer_ecam_ids,
.ops = &pci_synquacer_ecam_ops,
.probe = pci_synquacer_ecam_probe,
.of_to_plat = pci_synquacer_ecam_of_to_plat,
.priv_auto = sizeof(struct synquacer_ecam_pcie),
};
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