diff options
Diffstat (limited to 'drivers/pci/pci-aardvark.c')
| -rw-r--r-- | drivers/pci/pci-aardvark.c | 82 |
1 files changed, 30 insertions, 52 deletions
diff --git a/drivers/pci/pci-aardvark.c b/drivers/pci/pci-aardvark.c index 22b6d8b6286..ad4edd715bd 100644 --- a/drivers/pci/pci-aardvark.c +++ b/drivers/pci/pci-aardvark.c @@ -35,28 +35,10 @@ #include <linux/delay.h> #include <linux/ioport.h> -/* PCIe core registers */ -#define PCIE_CORE_CMD_STATUS_REG 0x4 -#define PCIE_CORE_CMD_IO_ACCESS_EN BIT(0) -#define PCIE_CORE_CMD_MEM_ACCESS_EN BIT(1) -#define PCIE_CORE_CMD_MEM_IO_REQ_EN BIT(2) -#define PCIE_CORE_DEV_REV_REG 0x8 -#define PCIE_CORE_EXP_ROM_BAR_REG 0x30 -#define PCIE_CORE_PCIEXP_CAP_OFF 0xc0 -#define PCIE_CORE_DEV_CTRL_STATS_REG 0xc8 -#define PCIE_CORE_DEV_CTRL_STATS_RELAX_ORDER_DISABLE (0 << 4) -#define PCIE_CORE_DEV_CTRL_STATS_SNOOP_DISABLE (0 << 11) -#define PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SIZE 0x2 -#define PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SIZE_SHIFT 5 -#define PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE 0x2 -#define PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE_SHIFT 12 -#define PCIE_CORE_LINK_CTRL_STAT_REG 0xd0 -#define PCIE_CORE_LINK_TRAINING BIT(5) -#define PCIE_CORE_ERR_CAPCTL_REG 0x118 -#define PCIE_CORE_ERR_CAPCTL_ECRC_CHK_TX BIT(5) -#define PCIE_CORE_ERR_CAPCTL_ECRC_CHK_TX_EN BIT(6) -#define PCIE_CORE_ERR_CAPCTL_ECRC_CHECK BIT(7) -#define PCIE_CORE_ERR_CAPCTL_ECRC_CHECK_RCV BIT(8) +/* PCIe Root Port register offsets */ +#define ADVK_ROOT_PORT_PCI_CFG_OFF 0x0 +#define ADVK_ROOT_PORT_PCI_EXP_OFF 0xc0 +#define ADVK_ROOT_PORT_PCI_ERR_OFF 0x100 /* PIO registers base address and register offsets */ #define PIO_BASE_ADDR 0x4000 @@ -394,7 +376,7 @@ static int pcie_advk_read_config(const struct udevice *bus, pci_dev_t bdf, if ((offset >= 0x10 && offset < 0x34) || (offset >= 0x38 && offset < 0x3c)) data = pcie->cfgcache[(offset - 0x10) / 4]; else - data = advk_readl(pcie, offset & ~3); + data = advk_readl(pcie, ADVK_ROOT_PORT_PCI_CFG_OFF + (offset & ~3)); if ((offset & ~3) == (PCI_HEADER_TYPE & ~3)) { /* @@ -406,14 +388,13 @@ static int pcie_advk_read_config(const struct udevice *bus, pci_dev_t bdf, data |= PCI_HEADER_TYPE_BRIDGE << 16; } - if ((offset & ~3) == PCIE_CORE_PCIEXP_CAP_OFF + PCI_EXP_RTCTL) { + if ((offset & ~3) == ADVK_ROOT_PORT_PCI_EXP_OFF + PCI_EXP_RTCTL) { /* CRSSVE bit is stored only in cache */ if (pcie->cfgcrssve) data |= PCI_EXP_RTCTL_CRSSVE; } - if ((offset & ~3) == PCIE_CORE_PCIEXP_CAP_OFF + - (PCI_EXP_RTCAP & ~3)) { + if ((offset & ~3) == ADVK_ROOT_PORT_PCI_EXP_OFF + (PCI_EXP_RTCAP & ~3)) { /* CRS is emulated below, so set CRSVIS capability */ data |= PCI_EXP_RTCAP_CRSVIS << 16; } @@ -583,9 +564,9 @@ static int pcie_advk_write_config(struct udevice *bus, pci_dev_t bdf, data = 0x0; pcie->cfgcache[(offset - 0x10) / 4] = data; } else { - data = advk_readl(pcie, offset & ~3); + data = advk_readl(pcie, ADVK_ROOT_PORT_PCI_CFG_OFF + (offset & ~3)); data = pci_conv_size_to_32(data, value, offset, size); - advk_writel(pcie, data, offset & ~3); + advk_writel(pcie, data, ADVK_ROOT_PORT_PCI_CFG_OFF + (offset & ~3)); } if (offset == PCI_PRIMARY_BUS) @@ -595,7 +576,7 @@ static int pcie_advk_write_config(struct udevice *bus, pci_dev_t bdf, (offset == PCI_PRIMARY_BUS && size != PCI_SIZE_8)) pcie->sec_busno = (data >> 8) & 0xff; - if ((offset & ~3) == PCIE_CORE_PCIEXP_CAP_OFF + PCI_EXP_RTCTL) + if ((offset & ~3) == ADVK_ROOT_PORT_PCI_EXP_OFF + PCI_EXP_RTCTL) pcie->cfgcrssve = data & PCI_EXP_RTCTL_CRSSVE; return 0; @@ -834,26 +815,25 @@ static int pcie_advk_setup_hw(struct pcie_advk *pcie) * Type 1 registers is redirected to the virtual cfgcache[] buffer, * which avoids changing unrelated registers. */ - reg = advk_readl(pcie, PCIE_CORE_DEV_REV_REG); + reg = advk_readl(pcie, ADVK_ROOT_PORT_PCI_CFG_OFF + PCI_CLASS_REVISION); reg &= ~0xffffff00; reg |= (PCI_CLASS_BRIDGE_PCI << 8) << 8; - advk_writel(pcie, reg, PCIE_CORE_DEV_REV_REG); - - /* Set Advanced Error Capabilities and Control PF0 register */ - reg = PCIE_CORE_ERR_CAPCTL_ECRC_CHK_TX | - PCIE_CORE_ERR_CAPCTL_ECRC_CHK_TX_EN | - PCIE_CORE_ERR_CAPCTL_ECRC_CHECK | - PCIE_CORE_ERR_CAPCTL_ECRC_CHECK_RCV; - advk_writel(pcie, reg, PCIE_CORE_ERR_CAPCTL_REG); - - /* Set PCIe Device Control and Status 1 PF0 register */ - reg = PCIE_CORE_DEV_CTRL_STATS_RELAX_ORDER_DISABLE | - (PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SIZE << - PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SIZE_SHIFT) | - (PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE << - PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE_SHIFT) | - PCIE_CORE_DEV_CTRL_STATS_SNOOP_DISABLE; - advk_writel(pcie, reg, PCIE_CORE_DEV_CTRL_STATS_REG); + advk_writel(pcie, reg, ADVK_ROOT_PORT_PCI_CFG_OFF + PCI_CLASS_REVISION); + + /* Enable generation and checking of ECRC on PCIe Root Port */ + reg = advk_readl(pcie, ADVK_ROOT_PORT_PCI_ERR_OFF + PCI_ERR_CAP); + reg |= PCI_ERR_CAP_ECRC_GENE | PCI_ERR_CAP_ECRC_CHKE; + advk_writel(pcie, reg, ADVK_ROOT_PORT_PCI_ERR_OFF + PCI_ERR_CAP); + + /* Set PCIe Device Control register on PCIe Root Port */ + reg = advk_readl(pcie, ADVK_ROOT_PORT_PCI_EXP_OFF + PCI_EXP_DEVCTL); + reg &= ~PCI_EXP_DEVCTL_RELAX_EN; + reg &= ~PCI_EXP_DEVCTL_NOSNOOP_EN; + reg &= ~PCI_EXP_DEVCTL_PAYLOAD; + reg &= ~PCI_EXP_DEVCTL_READRQ; + reg |= PCI_EXP_DEVCTL_PAYLOAD_512B; + reg |= PCI_EXP_DEVCTL_READRQ_512B; + advk_writel(pcie, reg, ADVK_ROOT_PORT_PCI_EXP_OFF + PCI_EXP_DEVCTL); /* Program PCIe Control 2 to disable strict ordering */ reg = PCIE_CORE_CTRL2_RESERVED | @@ -994,11 +974,9 @@ static int pcie_advk_remove(struct udevice *dev) for (i = 0; i < OB_WIN_COUNT; i++) pcie_advk_disable_ob_win(pcie, i); - reg = advk_readl(pcie, PCIE_CORE_CMD_STATUS_REG); - reg &= ~(PCIE_CORE_CMD_MEM_ACCESS_EN | - PCIE_CORE_CMD_IO_ACCESS_EN | - PCIE_CORE_CMD_MEM_IO_REQ_EN); - advk_writel(pcie, reg, PCIE_CORE_CMD_STATUS_REG); + reg = advk_readl(pcie, ADVK_ROOT_PORT_PCI_CFG_OFF + PCI_COMMAND); + reg &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); + advk_writel(pcie, reg, ADVK_ROOT_PORT_PCI_CFG_OFF + PCI_COMMAND); reg = advk_readl(pcie, PCIE_CORE_CTRL0_REG); reg &= ~LINK_TRAINING_EN; |