/* SPDX-License-Identifier: GPL-2.0-only */ #include <stdint.h> #include <device/pci_ops.h> #include <console/console.h> #include <soc/iosf.h> static inline void write_iosf_reg(int reg, uint32_t value) { pci_s_write_config32(IOSF_PCI_DEV, reg, value); } static inline uint32_t read_iosf_reg(int reg) { return pci_s_read_config32(IOSF_PCI_DEV, reg); } /* Common sequences for all the port accesses. */ static uint32_t iosf_read_port(uint32_t cr, int reg) { cr |= IOSF_REG(reg) | IOSF_BYTE_EN; write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg)); write_iosf_reg(MCR_REG, cr); return read_iosf_reg(MDR_REG); } static void iosf_write_port(uint32_t cr, int reg, uint32_t val) { cr |= IOSF_REG(reg) | IOSF_BYTE_EN; write_iosf_reg(MDR_REG, val); write_iosf_reg(MCRX_REG, IOSF_REG_UPPER(reg)); write_iosf_reg(MCR_REG, cr); } #define IOSF_READ(port) \ (IOSF_OPCODE(IOSF_OP_READ_##port) | IOSF_PORT(IOSF_PORT_##port)) #define IOSF_WRITE(port) \ (IOSF_OPCODE(IOSF_OP_WRITE_##port) | IOSF_PORT(IOSF_PORT_##port)) uint32_t iosf_bunit_read(int reg) { return iosf_read_port(IOSF_READ(BUNIT), reg); } void iosf_bunit_write(int reg, uint32_t val) { iosf_write_port(IOSF_WRITE(BUNIT), reg, val); } uint32_t iosf_punit_read(int reg) { return iosf_read_port(IOSF_READ(PMC), reg); } void iosf_punit_write(int reg, uint32_t val) { iosf_write_port(IOSF_WRITE(PMC), reg, val); } uint32_t iosf_score_read(int reg) { return iosf_read_port(IOSF_READ(SCORE), reg); } void iosf_score_write(int reg, uint32_t val) { iosf_write_port(IOSF_WRITE(SCORE), reg, val); } uint32_t iosf_lpss_read(int reg) { return iosf_read_port(IOSF_READ(LPSS), reg); } void iosf_lpss_write(int reg, uint32_t val) { iosf_write_port(IOSF_WRITE(LPSS), reg, val); } uint32_t iosf_port58_read(int reg) { return iosf_read_port(IOSF_READ(0x58), reg); } void iosf_port58_write(int reg, uint32_t val) { iosf_write_port(IOSF_WRITE(0x58), reg, val); } uint32_t iosf_scc_read(int reg) { return iosf_read_port(IOSF_READ(SCC), reg); } void iosf_scc_write(int reg, uint32_t val) { iosf_write_port(IOSF_WRITE(SCC), reg, val); } uint32_t iosf_usbphy_read(int reg) { return iosf_read_port(IOSF_READ(USBPHY), reg); } void iosf_usbphy_write(int reg, uint32_t val) { iosf_write_port(IOSF_WRITE(USBPHY), reg, val); } #if ENV_RAMSTAGE uint64_t reg_script_read_iosf(struct reg_script_context *ctx) { const struct reg_script *step = ctx->step; /* Process the request */ switch (step->id) { case IOSF_PORT_BUNIT: return iosf_bunit_read(step->reg); case IOSF_PORT_SCORE: return iosf_score_read(step->reg); case IOSF_PORT_LPSS: return iosf_lpss_read(step->reg); case IOSF_PORT_0x58: return iosf_port58_read(step->reg); case IOSF_PORT_SCC: return iosf_scc_read(step->reg); case IOSF_PORT_USBPHY: return iosf_usbphy_read(step->reg); default: printk(BIOS_DEBUG, "No read support for IOSF port 0x%x.\n", step->id); break; } return 0; } void reg_script_write_iosf(struct reg_script_context *ctx) { const struct reg_script *step = ctx->step; /* Process the request */ switch (step->id) { case IOSF_PORT_BUNIT: iosf_bunit_write(step->reg, step->value); break; case IOSF_PORT_SCORE: iosf_score_write(step->reg, step->value); break; case IOSF_PORT_LPSS: iosf_lpss_write(step->reg, step->value); break; case IOSF_PORT_0x58: iosf_port58_write(step->reg, step->value); break; case IOSF_PORT_SCC: iosf_scc_write(step->reg, step->value); break; case IOSF_PORT_USBPHY: iosf_usbphy_write(step->reg, step->value); break; default: printk(BIOS_DEBUG, "No write support for IOSF port 0x%x.\n", step->id); break; } } static const struct reg_script_bus_entry reg_script_bus_table = { REG_SCRIPT_TYPE_IOSF, reg_script_read_iosf, reg_script_write_iosf }; REG_SCRIPT_BUS_ENTRY(reg_script_bus_table); #endif /* ENV_RAMSTAGE */