static int mvebu_pcie_indirect_rd_conf(struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 *val)
{
struct mvebu_pcie *pcie = to_pcie(bus->host);
/* Skip all requests not directed to device behind bridge */
if (devfn != pcie->devfn || !mvebu_pcie_link_up(pcie)) {
*val = 0xffffffff;
return PCIBIOS_DEVICE_NOT_FOUND;
}
writel(PCIE_CONF_ADDR(bus->number, devfn, where),
pcie->base + PCIE_CONF_ADDR_OFF);
*val = readl(pcie->base + PCIE_CONF_DATA_OFF);
if (size == 1)
*val = (*val >> (8 * (where & 3))) & 0xff;
else if (size == 2)
void pci_init_board(void)
{
int mem_target, mem_attr, i;
int bus = 0;
u32 reg;
u32 soc_ctrl = readl(MVEBU_SYSTEM_REG_BASE + 0x4);
/* Check SoC Control Power State */
debug("%s: SoC Control %08x, 0en %01lx, 1en %01lx, 2en %01lx\n",
__func__, soc_ctrl, SELECT(soc_ctrl, 0), SELECT(soc_ctrl, 1),
SELECT(soc_ctrl, 2));
for (i = 0; i < MAX_PEX; i++) {
struct mvebu_pcie *pcie = &pcie_bus[i];
struct pci_controller *hose = &pcie->hose;
/* Get port number, lane number and memory target / attr */
mvebu_get_port_lane(pcie, i, &mem_target, &mem_attr);
/* Don't read at all from pci registers if port power is down */
if (pcie->lane == 0 && SELECT(soc_ctrl, pcie->port) == 0) {
i += 3;
debug("%s: skipping port %d\n", __func__, pcie->port);
continue;
}
pcie->base = (void __iomem *)PCIE_BASE(i);
/* Check link and skip ports that have no link */
if (!mvebu_pcie_link_up(pcie)) {
debug("%s: PCIe %d.%d - down\n", __func__,
pcie->port, pcie->lane);
continue;
}
debug("%s: PCIe %d.%d - up, base %08x\n", __func__,
pcie->port, pcie->lane, (u32)pcie->base);
/* Read Id info and local bus/dev */
debug("direct conf read %08x, local bus %d, local dev %d\n",
readl(pcie->base), mvebu_pcie_get_local_bus_nr(pcie),
mvebu_pcie_get_local_dev_nr(pcie));
mvebu_pcie_set_local_bus_nr(pcie, bus);
mvebu_pcie_set_local_dev_nr(pcie, 0);
pcie->dev = PCI_BDF(bus, 0, 0);
pcie->mem.start = (u32)mvebu_pcie_membase;
pcie->mem.end = pcie->mem.start + PCIE_MEM_SIZE - 1;
mvebu_pcie_membase += PCIE_MEM_SIZE;
if (mvebu_mbus_add_window_by_id(mem_target, mem_attr,
(phys_addr_t)pcie->mem.start,
PCIE_MEM_SIZE)) {
printf("PCIe unable to add mbus window for mem at %08x+%08x\n",
(u32)pcie->mem.start, PCIE_MEM_SIZE);
}
/* Setup windows and configure host bridge */
mvebu_pcie_setup_wins(pcie);
/* Master + slave enable. */
reg = readl(pcie->base + PCIE_CMD_OFF);
reg |= PCI_COMMAND_MEMORY;
reg |= PCI_COMMAND_MASTER;
reg |= BIT(10); /* disable interrupts */
writel(reg, pcie->base + PCIE_CMD_OFF);
/* Setup U-Boot PCI Controller */
hose->first_busno = 0;
hose->current_busno = bus;
/* PCI memory space */
pci_set_region(hose->regions + 0, pcie->mem.start,
pcie->mem.start, PCIE_MEM_SIZE, PCI_REGION_MEM);
pci_set_region(hose->regions + 1,
0, 0,
gd->ram_size,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
hose->region_count = 2;
pci_set_ops(hose,
pci_hose_read_config_byte_via_dword,
pci_hose_read_config_word_via_dword,
mvebu_pcie_read_config_dword,
pci_hose_write_config_byte_via_dword,
pci_hose_write_config_word_via_dword,
mvebu_pcie_write_config_dword);
pci_register_hose(hose);
hose->last_busno = pci_hose_scan(hose);
/* Set BAR0 to internal registers */
writel(SOC_REGS_PHY_BASE, pcie->base + PCIE_BAR_LO_OFF(0));
writel(0, pcie->base + PCIE_BAR_HI_OFF(0));
bus = hose->last_busno + 1;
}
}
