return MV_OK;
}
-
-int pex_local_bus_num_set(u32 pex_if, u32 bus_num)
-{
- u32 pex_status;
-
- DEBUG_INIT_FULL_S("\n### pex_local_bus_num_set ###\n");
-
- if (bus_num >= MAX_PEX_BUSSES) {
- DEBUG_INIT_C("pex_local_bus_num_set: Illegal bus number %d\n",
- bus_num, 4);
- return MV_BAD_PARAM;
- }
-
- pex_status = reg_read(PEX_STATUS_REG(pex_if));
- pex_status &= ~PXSR_PEX_BUS_NUM_MASK;
- pex_status |=
- (bus_num << PXSR_PEX_BUS_NUM_OFFS) & PXSR_PEX_BUS_NUM_MASK;
- reg_write(PEX_STATUS_REG(pex_if), pex_status);
-
- return MV_OK;
-}
-
-int pex_local_dev_num_set(u32 pex_if, u32 dev_num)
-{
- u32 pex_status;
-
- DEBUG_INIT_FULL_S("\n### pex_local_dev_num_set ###\n");
-
- pex_status = reg_read(PEX_STATUS_REG(pex_if));
- pex_status &= ~PXSR_PEX_DEV_NUM_MASK;
- pex_status |=
- (dev_num << PXSR_PEX_DEV_NUM_OFFS) & PXSR_PEX_DEV_NUM_MASK;
- reg_write(PEX_STATUS_REG(pex_if), pex_status);
-
- return MV_OK;
-}
-
-/*
- * pex_config_read - Read from configuration space
- *
- * DESCRIPTION:
- * This function performs a 32 bit read from PEX configuration space.
- * It supports both type 0 and type 1 of Configuration Transactions
- * (local and over bridge). In order to read from local bus segment, use
- * bus number retrieved from pex_local_bus_num_get(). Other bus numbers
- * will result configuration transaction of type 1 (over bridge).
- *
- * INPUT:
- * pex_if - PEX interface number.
- * bus - PEX segment bus number.
- * dev - PEX device number.
- * func - Function number.
- * reg_offs - Register offset.
- *
- * OUTPUT:
- * None.
- *
- * RETURN:
- * 32bit register data, 0xffffffff on error
- */
-u32 pex_config_read(u32 pex_if, u32 bus, u32 dev, u32 func, u32 reg_off)
-{
- u32 pex_data = 0;
- u32 local_dev, local_bus;
- u32 pex_status;
-
- pex_status = reg_read(PEX_STATUS_REG(pex_if));
- local_dev =
- ((pex_status & PXSR_PEX_DEV_NUM_MASK) >> PXSR_PEX_DEV_NUM_OFFS);
- local_bus =
- ((pex_status & PXSR_PEX_BUS_NUM_MASK) >> PXSR_PEX_BUS_NUM_OFFS);
-
- /*
- * In PCI Express we have only one device number
- * and this number is the first number we encounter
- * else that the local_dev
- * spec pex define return on config read/write on any device
- */
- if (bus == local_bus) {
- if (local_dev == 0) {
- /*
- * if local dev is 0 then the first number we encounter
- * after 0 is 1
- */
- if ((dev != 1) && (dev != local_dev))
- return MV_ERROR;
- } else {
- /*
- * if local dev is not 0 then the first number we
- * encounter is 0
- */
- if ((dev != 0) && (dev != local_dev))
- return MV_ERROR;
- }
- }
-
- /* Creating PEX address to be passed */
- pex_data = (bus << PXCAR_BUS_NUM_OFFS);
- pex_data |= (dev << PXCAR_DEVICE_NUM_OFFS);
- pex_data |= (func << PXCAR_FUNC_NUM_OFFS);
- /* Legacy register space */
- pex_data |= (reg_off & PXCAR_REG_NUM_MASK);
- /* Extended register space */
- pex_data |= (((reg_off & PXCAR_REAL_EXT_REG_NUM_MASK) >>
- PXCAR_REAL_EXT_REG_NUM_OFFS) << PXCAR_EXT_REG_NUM_OFFS);
- pex_data |= PXCAR_CONFIG_EN;
-
- /* Write the address to the PEX configuration address register */
- reg_write(PEX_CFG_ADDR_REG(pex_if), pex_data);
-
- /*
- * In order to let the PEX controller absorbed the address
- * of the read transaction we perform a validity check that
- * the address was written
- */
- if (pex_data != reg_read(PEX_CFG_ADDR_REG(pex_if)))
- return MV_ERROR;
-
- /* Cleaning Master Abort */
- reg_bit_set(PEX_CFG_DIRECT_ACCESS(pex_if, PEX_STATUS_AND_COMMAND),
- PXSAC_MABORT);
- /* Read the Data returned in the PEX Data register */
- pex_data = reg_read(PEX_CFG_DATA_REG(pex_if));
-
- DEBUG_INIT_FULL_C(" --> ", pex_data, 4);
-
- return pex_data;
-}
/* Direct access to PEX0 Root Port's PCIe Capability structure */
#define PEX0_RP_PCIE_CFG_OFFSET (0x00080000 + 0x60)
-/* Sample at Reset */
-#define MPP_SAMPLE_AT_RESET(id) (0xe4200 + (id * 4))
-
-/* PCI Express Control and Status Registers */
-#define MAX_PEX_BUSSES 256
-
-#define PEX_IF_REGS_OFFSET(if) ((if) > 0 ? \
- (0x40000 + ((if) - 1) * 0x4000) : \
- 0x80000)
-#define PEX_IF_REGS_BASE(if) (PEX_IF_REGS_OFFSET(if))
-#define PEX_CAPABILITIES_REG(if) ((PEX_IF_REGS_BASE(if)) + 0x60)
-#define PEX_LINK_CTRL_STATUS2_REG(if) ((PEX_IF_REGS_BASE(if)) + 0x90)
-#define PEX_CTRL_REG(if) ((PEX_IF_REGS_BASE(if)) + 0x1a00)
-#define PEX_STATUS_REG(if) ((PEX_IF_REGS_BASE(if)) + 0x1a04)
-#define PEX_DBG_STATUS_REG(if) ((PEX_IF_REGS_BASE(if)) + 0x1a64)
-#define PEX_LINK_CAPABILITY_REG 0x6c
-#define PEX_LINK_CTRL_STAT_REG 0x70
-#define PXSR_PEX_DEV_NUM_OFFS 16 /* Device Number Indication */
-#define PXSR_PEX_DEV_NUM_MASK (0x1f << PXSR_PEX_DEV_NUM_OFFS)
-#define PXSR_PEX_BUS_NUM_OFFS 8 /* Bus Number Indication */
-#define PXSR_PEX_BUS_NUM_MASK (0xff << PXSR_PEX_BUS_NUM_OFFS)
-
/* PEX_CAPABILITIES_REG fields */
#define PCIE0_ENABLE_OFFS 0
#define PCIE0_ENABLE_MASK (0x1 << PCIE0_ENABLE_OFFS)
#define PCIE3_ENABLE_OFFS 3
#define PCIE4_ENABLE_MASK (0x1 << PCIE3_ENABLE_OFFS)
-/* Controller revision info */
-#define PEX_DEVICE_AND_VENDOR_ID 0x000
-#define PEX_CFG_DIRECT_ACCESS(if, reg) (PEX_IF_REGS_BASE(if) + (reg))
-
-/* PCI Express Configuration Address Register */
-#define PXCAR_REG_NUM_OFFS 2
-#define PXCAR_REG_NUM_MAX 0x3f
-#define PXCAR_REG_NUM_MASK (PXCAR_REG_NUM_MAX << \
- PXCAR_REG_NUM_OFFS)
-#define PXCAR_FUNC_NUM_OFFS 8
-#define PXCAR_FUNC_NUM_MAX 0x7
-#define PXCAR_FUNC_NUM_MASK (PXCAR_FUNC_NUM_MAX << \
- PXCAR_FUNC_NUM_OFFS)
-#define PXCAR_DEVICE_NUM_OFFS 11
-#define PXCAR_DEVICE_NUM_MAX 0x1f
-#define PXCAR_DEVICE_NUM_MASK (PXCAR_DEVICE_NUM_MAX << \
- PXCAR_DEVICE_NUM_OFFS)
-#define PXCAR_BUS_NUM_OFFS 16
-#define PXCAR_BUS_NUM_MAX 0xff
-#define PXCAR_BUS_NUM_MASK (PXCAR_BUS_NUM_MAX << \
- PXCAR_BUS_NUM_OFFS)
-#define PXCAR_EXT_REG_NUM_OFFS 24
-#define PXCAR_EXT_REG_NUM_MAX 0xf
-
-#define PEX_CFG_ADDR_REG(if) ((PEX_IF_REGS_BASE(if)) + 0x18f8)
-#define PEX_CFG_DATA_REG(if) ((PEX_IF_REGS_BASE(if)) + 0x18fc)
-
-#define PXCAR_REAL_EXT_REG_NUM_OFFS 8
-#define PXCAR_REAL_EXT_REG_NUM_MASK (0xf << PXCAR_REAL_EXT_REG_NUM_OFFS)
-
-#define PXCAR_CONFIG_EN BIT(31)
-#define PEX_STATUS_AND_COMMAND 0x004
-#define PXSAC_MABORT BIT(29) /* Recieved Master Abort */
-
int hws_pex_config(const struct serdes_map *serdes_map, u8 count);
-int pex_local_bus_num_set(u32 pex_if, u32 bus_num);
-int pex_local_dev_num_set(u32 pex_if, u32 dev_num);
-u32 pex_config_read(u32 pex_if, u32 bus, u32 dev, u32 func, u32 reg_off);
-
void board_pex_config(void);
#endif
projects / u-boot.git / commitdiff
