+// SPDX-License-Identifier: GPL-2.0+
/*
+ * Copyright 2017-2019 NXP
* Copyright 2014-2015 Freescale Semiconductor, Inc.
* Layerscape PCIe driver
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <errno.h>
#include <malloc.h>
-#ifndef CONFIG_LS102XA
-#include <asm/arch/fdt.h>
-#include <asm/arch/soc.h>
-#else
-#include <asm/arch/immap_ls102xa.h>
+#include <dm.h>
+#if defined(CONFIG_FSL_LSCH2) || defined(CONFIG_FSL_LSCH3) || \
+ defined(CONFIG_ARM)
+#include <asm/arch/clock.h>
#endif
#include "pcie_layerscape.h"
-#ifdef CONFIG_LS102XA
-/* PEX1/2 Misc Ports Status Register */
-#define LTSSM_STATE_SHIFT 20
+DECLARE_GLOBAL_DATA_PTR;
-static int ls_pcie_link_state(struct ls_pcie *pcie)
+LIST_HEAD(ls_pcie_list);
+
+static unsigned int dbi_readl(struct ls_pcie *pcie, unsigned int offset)
{
- u32 state;
- struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR;
+ return in_le32(pcie->dbi + offset);
+}
- 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;
- }
+static void dbi_writel(struct ls_pcie *pcie, unsigned int value,
+ unsigned int offset)
+{
+ out_le32(pcie->dbi + offset, value);
+}
- return 1;
+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);
}
-#else
-static int ls_pcie_link_state(struct ls_pcie *pcie)
+
+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);
+}
+
+static int ls_pcie_ltssm(struct ls_pcie *pcie)
{
u32 state;
+ uint svr;
- 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;
+ svr = get_svr();
+ if (((svr >> SVR_VAR_PER_SHIFT) & SVR_LS102XA_MASK) == SVR_LS102XA) {
+ state = ctrl_readl(pcie, LS1021_PEXMSCPORTSR(pcie->idx));
+ state = (state >> LS1021_LTSSM_STATE_SHIFT) & LTSSM_STATE_MASK;
+ } else {
+ state = ctrl_readl(pcie, PCIE_PF_DBG) & LTSSM_STATE_MASK;
}
- return 1;
+ return state;
}
-#endif
static int ls_pcie_link_up(struct ls_pcie *pcie)
{
- int state;
- u32 cap;
+ int ltssm;
- 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);
+ ltssm = ls_pcie_ltssm(pcie);
+ if (ltssm < LTSSM_PCIE_L0)
+ return 0;
- return 0;
+ return 1;
}
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);
+ 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)
{
- writel(PCIE_ATU_REGION_OUTBOUND | PCIE_ATU_REGION_INDEX1,
- pcie->dbi + PCIE_ATU_VIEWPORT);
- writel(busdev, pcie->dbi + PCIE_ATU_LOWER_TARGET);
+ 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_iatu_outbound_set(struct ls_pcie *pcie, int idx, int type,
+static void ls_pcie_atu_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);
+ 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_iatu_inbound_set(struct ls_pcie *pcie, int idx,
+static void ls_pcie_atu_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);
+ 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_setup_atu(struct ls_pcie *pcie, struct ls_pcie_info *info)
+static void ls_pcie_dump_atu(struct ls_pcie *pcie)
{
-#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);
+ 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",
- readl(pcie->dbi + PCIE_ATU_LOWER_BASE));
+ dbi_readl(pcie, PCIE_ATU_LOWER_BASE));
debug("\tUPPER PHYS 0x%08x\n",
- readl(pcie->dbi + PCIE_ATU_UPPER_BASE));
+ dbi_readl(pcie, PCIE_ATU_UPPER_BASE));
debug("\tLOWER BUS 0x%08x\n",
- readl(pcie->dbi + PCIE_ATU_LOWER_TARGET));
+ dbi_readl(pcie, PCIE_ATU_LOWER_TARGET));
debug("\tUPPER BUS 0x%08x\n",
- readl(pcie->dbi + PCIE_ATU_UPPER_TARGET));
+ dbi_readl(pcie, 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));
+ dbi_readl(pcie, PCIE_ATU_CR1));
debug("\tCR2 0x%08x\n",
- readl(pcie->dbi + PCIE_ATU_CR2));
+ dbi_readl(pcie, PCIE_ATU_CR2));
}
-#endif
}
-int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
+static void ls_pcie_setup_atu(struct ls_pcie *pcie)
{
- /* Do not skip controller */
- return 0;
+ struct pci_region *io, *mem, *pref;
+ unsigned long long offset = 0;
+ 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->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;
+
+ /* 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);
}
-static int ls_pcie_addr_valid(struct pci_controller *hose, pci_dev_t d)
+/* Return 0 if the address is valid, -errno if not valid */
+static int ls_pcie_addr_valid(struct ls_pcie *pcie, pci_dev_t bdf)
{
- if (PCI_DEV(d) > 0)
+ struct udevice *bus = pcie->bus;
+
+ if (pcie->mode == PCI_HEADER_TYPE_NORMAL)
+ return -ENODEV;
+
+ if (!pcie->enabled)
+ return -ENXIO;
+
+ if (PCI_BUS(bdf) < bus->seq)
+ return -EINVAL;
+
+ if ((PCI_BUS(bdf) > bus->seq) && (!ls_pcie_link_up(pcie)))
return -EINVAL;
- /* Controller does not support multi-function in RC mode */
- if ((PCI_BUS(d) == hose->first_busno) && (PCI_FUNC(d) > 0))
+ if (PCI_BUS(bdf) <= (bus->seq + 1) && (PCI_DEV(bdf) > 0))
return -EINVAL;
return 0;
}
-static int ls_pcie_read_config(struct pci_controller *hose, pci_dev_t d,
- int where, u32 *val)
+int ls_pcie_conf_address(const struct udevice *bus, pci_dev_t bdf,
+ uint offset, void **paddress)
{
- struct ls_pcie *pcie = hose->priv_data;
- u32 busdev, *addr;
+ struct ls_pcie *pcie = dev_get_priv(bus);
+ u32 busdev;
+
+ if (ls_pcie_addr_valid(pcie, bdf))
+ return -EINVAL;
- if (ls_pcie_addr_valid(hose, d)) {
- *val = 0xffffffff;
+ if (PCI_BUS(bdf) == bus->seq) {
+ *paddress = pcie->dbi + offset;
return 0;
}
- if (PCI_BUS(d) == hose->first_busno) {
- addr = pcie->dbi + (where & ~0x3);
+ 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, busdev);
+ *paddress = pcie->cfg0 + offset;
} 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);
- }
+ ls_pcie_cfg1_set_busdev(pcie, busdev);
+ *paddress = pcie->cfg1 + offset;
}
-
- *val = readl(addr);
-
return 0;
}
-static int ls_pcie_write_config(struct pci_controller *hose, pci_dev_t d,
- int where, u32 val)
+static int ls_pcie_read_config(const struct udevice *bus, pci_dev_t bdf,
+ uint offset, ulong *valuep,
+ enum pci_size_t size)
{
- struct ls_pcie *pcie = hose->priv_data;
- u32 busdev, *addr;
+ return pci_generic_mmap_read_config(bus, ls_pcie_conf_address,
+ bdf, offset, valuep, size);
+}
- if (ls_pcie_addr_valid(hose, d))
- return -EINVAL;
+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);
+}
- 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);
- }
- }
+/* Clear multi-function bit */
+static void ls_pcie_clear_multifunction(struct ls_pcie *pcie)
+{
+ writeb(PCI_HEADER_TYPE_BRIDGE, pcie->dbi + PCI_HEADER_TYPE);
+}
- writel(val, addr);
+/* Fix class value */
+static void ls_pcie_fix_class(struct ls_pcie *pcie)
+{
+ writew(PCI_CLASS_BRIDGE_PCI, pcie->dbi + PCI_CLASS_DEVICE);
+}
- return 0;
+/* 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);
}
-static void ls_pcie_setup_ctrl(struct ls_pcie *pcie,
- struct ls_pcie_info *info)
+/* Disable all bars in RC mode */
+static void ls_pcie_disable_bars(struct ls_pcie *pcie)
{
- struct pci_controller *hose = &pcie->hose;
- pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0);
+ 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);
+}
- ls_pcie_setup_atu(pcie, info);
+static void ls_pcie_setup_ctrl(struct ls_pcie *pcie)
+{
+ ls_pcie_setup_atu(pcie);
- pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0);
+ 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);
- /* 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
+ ls_pcie_disable_bars(pcie);
+ pcie->stream_id_cur = 0;
}
-static void ls_pcie_ep_setup_atu(struct ls_pcie *pcie,
- struct ls_pcie_info *info)
+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_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX0, 0, phys);
+ ls_pcie_atu_inbound_set(pcie, 0, 0, phys);
/* ATU 1 : INBOUND : map BAR1 */
phys += PCIE_BAR1_SIZE;
- ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX1, 1, phys);
+ ls_pcie_atu_inbound_set(pcie, 1, 1, phys);
/* ATU 2 : INBOUND : map BAR2 */
phys += PCIE_BAR2_SIZE;
- ls_pcie_iatu_inbound_set(pcie, PCIE_ATU_REGION_INDEX2, 2, phys);
+ 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_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);
+ 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)
{
+ /* The least inbound window is 4KiB */
if (size < 4 * 1024)
return;
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)
+static void ls_pcie_ep_enable_cfg(struct ls_pcie *pcie)
+{
+ u32 config;
+
+ config = ctrl_readl(pcie, PCIE_PF_CONFIG);
+ config |= PCIE_CONFIG_READY;
+ ctrl_writel(pcie, config, PCIE_PF_CONFIG);
+}
+
+static void ls_pcie_setup_ep(struct ls_pcie *pcie)
{
- struct pci_controller *hose = &pcie->hose;
- pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0);
- int sriov;
+ u32 sriov;
- sriov = pci_hose_find_ext_capability(hose, dev, PCI_EXT_CAP_ID_SRIOV);
- if (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++) {
-#ifndef CONFIG_LS102XA
- writel(PCIE_LCTRL0_VAL(pf, vf),
- pcie->dbi + PCIE_LUT_BASE +
- PCIE_LUT_LCTRL0);
-#endif
+ 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, info);
+ ls_pcie_ep_setup_atu(pcie);
}
}
-
/* Disable CFG2 */
-#ifndef CONFIG_LS102XA
- writel(0, pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_LCTRL0);
-#endif
+ 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, info);
+ ls_pcie_ep_setup_atu(pcie);
}
+
+ ls_pcie_ep_enable_cfg(pcie);
}
-int ls_pcie_init_ctrl(int busno, enum srds_prtcl dev, struct ls_pcie_info *info)
+static int ls_pcie_probe(struct udevice *dev)
{
- 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;
+ struct ls_pcie *pcie = dev_get_priv(dev);
+ const void *fdt = gd->fdt_blob;
+ int node = dev_of_offset(dev);
+ u16 link_sta;
+ uint svr;
+ int ret;
+ fdt_size_t cfg_size;
+
+ 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 = 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);
+ pcie->idx = (pcie->dbi_res.start - PCIE_SYS_BASE_ADDR) / PCIE_CCSR_SIZE;
- linkup = ls_pcie_link_up(pcie);
+ list_add(&pcie->list, &ls_pcie_list);
- 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;
+ 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;
}
- /* 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;
+ 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 -1;
+ }
- pci_register_hose(hose);
+ 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 ret;
+ }
- hose->last_busno = pci_hose_scan(hose);
+ /*
+ * 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->cfg_res);
+ pcie->cfg_res.start = LS2088A_PCIE1_PHYS_ADDR +
+ LS2088A_PCIE_PHYS_SIZE * pcie->idx;
+ pcie->cfg_res.end = pcie->cfg_res.start + cfg_size;
+ pcie->ctrl = pcie->lut + 0x40000;
+ }
- printf("PCIe%x: Bus %02x - %02x\n",
- info->pci_num, hose->first_busno, hose->last_busno);
+ 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;
- return hose->last_busno + 1;
-}
+ pcie->big_endian = fdtdec_get_bool(fdt, node, "big-endian");
-int ls_pcie_init_board(int busno)
-{
- struct ls_pcie_info info;
+ 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);
-#ifdef CONFIG_PCIE1
- SET_LS_PCIE_INFO(info, 1);
- busno = ls_pcie_init_ctrl(busno, PCIE1, &info);
-#endif
+ pcie->mode = readb(pcie->dbi + PCI_HEADER_TYPE) & 0x7f;
-#ifdef CONFIG_PCIE2
- SET_LS_PCIE_INFO(info, 2);
- busno = ls_pcie_init_ctrl(busno, PCIE2, &info);
-#endif
+ if (pcie->mode == PCI_HEADER_TYPE_NORMAL) {
+ printf("PCIe%u: %s %s", pcie->idx, dev->name, "Endpoint");
+ ls_pcie_setup_ep(pcie);
+ } else {
+ printf("PCIe%u: %s %s", pcie->idx, dev->name, "Root Complex");
+ ls_pcie_setup_ctrl(pcie);
+ }
-#ifdef CONFIG_PCIE3
- SET_LS_PCIE_INFO(info, 3);
- busno = ls_pcie_init_ctrl(busno, PCIE3, &info);
-#endif
+ if (!ls_pcie_link_up(pcie)) {
+ /* Let the user know there's no PCIe link */
+ printf(": no link\n");
+ return 0;
+ }
-#ifdef CONFIG_PCIE4
- SET_LS_PCIE_INFO(info, 4);
- busno = ls_pcie_init_ctrl(busno, PCIE4, &info);
-#endif
+ /* 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 busno;
+ return 0;
}
-void pci_init_board(void)
-{
- ls_pcie_init_board(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),
+};
projects / oweals / u-boot.git / blobdiff