diff options
Diffstat (limited to 'drivers/pci/pcie_xilinx.c')
| -rw-r--r-- | drivers/pci/pcie_xilinx.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/drivers/pci/pcie_xilinx.c b/drivers/pci/pcie_xilinx.c index 53fd121..3db460b 100644 --- a/drivers/pci/pcie_xilinx.c +++ b/drivers/pci/pcie_xilinx.c @@ -8,11 +8,10 @@ #include <common.h> #include <dm.h> #include <pci.h> -#include <asm/global_data.h> #include <linux/bitops.h> #include <linux/printk.h> - -#include <asm/io.h> +#include <linux/io.h> +#include <linux/err.h> /** * struct xilinx_pcie - Xilinx PCIe controller state @@ -25,6 +24,8 @@ struct xilinx_pcie { /* Register definitions */ #define XILINX_PCIE_REG_PSCR 0x144 #define XILINX_PCIE_REG_PSCR_LNKUP BIT(11) +#define XILINX_PCIE_REG_RPSC 0x148 +#define XILINX_PCIE_REG_RPSC_BEN BIT(0) /** * pcie_xilinx_link_up() - Check whether the PCIe link is up @@ -140,20 +141,22 @@ static int pcie_xilinx_write_config(struct udevice *bus, pci_dev_t bdf, static int pcie_xilinx_of_to_plat(struct udevice *dev) { struct xilinx_pcie *pcie = dev_get_priv(dev); - struct fdt_resource reg_res; - DECLARE_GLOBAL_DATA_PTR; - int err; - - err = fdt_get_resource(gd->fdt_blob, dev_of_offset(dev), "reg", - 0, ®_res); - if (err < 0) { - pr_err("\"reg\" resource not found\n"); - return err; - } - - pcie->cfg_base = map_physmem(reg_res.start, - fdt_resource_size(®_res), - MAP_NOCACHE); + fdt_addr_t addr; + fdt_size_t size; + u32 rpsc; + + addr = dev_read_addr_size(dev, &size); + if (addr == FDT_ADDR_T_NONE) + return -EINVAL; + + pcie->cfg_base = devm_ioremap(dev, addr, size); + if (IS_ERR(pcie->cfg_base)) + return PTR_ERR(pcie->cfg_base); + + /* Enable the Bridge enable bit */ + rpsc = __raw_readl(pcie->cfg_base + XILINX_PCIE_REG_RPSC); + rpsc |= XILINX_PCIE_REG_RPSC_BEN; + __raw_writel(rpsc, pcie->cfg_base + XILINX_PCIE_REG_RPSC); return 0; } |