| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #pragma once |
| |
| #include <ddk/protocol/i2c.h> |
| #include <ddk/protocol/platform/device.h> |
| #include <ddk/protocol/platform/proxy.h> |
| |
| namespace platform_bus { |
| |
| // Maximum transfer size we can proxy. |
| static constexpr size_t PROXY_MAX_TRANSFER_SIZE = 4096; |
| |
| // Device ID for a top level platform device (that is, an immediate child of the platform bus). |
| static constexpr uint32_t ROOT_DEVICE_ID = 0; |
| |
| // ZX_PROTOCOL_PDEV proxy support. |
| enum { |
| PDEV_GET_MMIO, |
| PDEV_GET_INTERRUPT, |
| PDEV_GET_BTI, |
| PDEV_GET_SMC, |
| PDEV_GET_DEVICE_INFO, |
| PDEV_GET_BOARD_INFO, |
| PDEV_DEVICE_ADD, |
| PDEV_GET_METADATA, |
| PDEV_GET_PROTOCOLS, |
| }; |
| |
| typedef struct { |
| platform_proxy_req_t header; |
| uint32_t index; |
| uint32_t flags; |
| } rpc_pdev_req_t; |
| |
| typedef struct { |
| platform_proxy_rsp_t header; |
| zx_paddr_t paddr; |
| size_t length; |
| uint32_t irq; |
| uint32_t mode; |
| pdev_device_info_t device_info; |
| pdev_board_info_t board_info; |
| uint32_t device_id; |
| uint32_t metadata_type; |
| uint32_t metadata_length; |
| uint32_t protocol_count; |
| } rpc_pdev_rsp_t; |
| |
| // Maximum metadata size that can be returned via PDEV_DEVICE_GET_METADATA. |
| static constexpr uint32_t PROXY_MAX_METADATA_SIZE = |
| (PROXY_MAX_TRANSFER_SIZE - sizeof(rpc_pdev_rsp_t)); |
| |
| typedef struct { |
| rpc_pdev_rsp_t pdev; |
| uint8_t metadata[PROXY_MAX_METADATA_SIZE]; |
| } rpc_pdev_metadata_rsp_t; |
| |
| // Maximum number of protocols that can be returned via PDEV_GET_PROTOCOLS. |
| static constexpr size_t PROXY_MAX_PROTOCOLS = ((PLATFORM_PROXY_MAX_DATA - sizeof(rpc_pdev_rsp_t)) |
| / sizeof(uint32_t)); |
| |
| // Maximum I2C transfer is I2C_MAX_TRANSFER_SIZE minus size of largest header. |
| static constexpr uint32_t I2C_MAX_TRANSFER_SIZE = (PROXY_MAX_TRANSFER_SIZE - |
| (sizeof(rpc_pdev_req_t) > sizeof(rpc_pdev_rsp_t) ? |
| sizeof(rpc_pdev_req_t) : sizeof(rpc_pdev_rsp_t))); |
| |
| // ZX_PROTOCOL_GPIO proxy support. |
| enum { |
| GPIO_CONFIG_IN, |
| GPIO_CONFIG_OUT, |
| GPIO_SET_ALT_FUNCTION, |
| GPIO_READ, |
| GPIO_WRITE, |
| GPIO_GET_INTERRUPT, |
| GPIO_RELEASE_INTERRUPT, |
| GPIO_SET_POLARITY, |
| }; |
| |
| typedef struct { |
| platform_proxy_req_t header; |
| uint32_t index; |
| uint32_t flags; |
| uint32_t polarity; |
| uint64_t alt_function; |
| uint8_t value; |
| } rpc_gpio_req_t; |
| |
| typedef struct { |
| platform_proxy_rsp_t header; |
| uint8_t value; |
| } rpc_gpio_rsp_t; |
| |
| // ZX_PROTOCOL_I2C proxy support. |
| enum { |
| I2C_GET_MAX_TRANSFER, |
| I2C_TRANSACT, |
| }; |
| |
| typedef struct { |
| platform_proxy_req_t header; |
| uint32_t index; |
| i2c_transact_callback transact_cb; |
| void* cookie; |
| size_t cnt; |
| } rpc_i2c_req_t; |
| |
| typedef struct { |
| platform_proxy_rsp_t header; |
| size_t max_transfer; |
| i2c_transact_callback transact_cb; |
| void* cookie; |
| } rpc_i2c_rsp_t; |
| |
| // ZX_PROTOCOL_CLK proxy support. |
| enum { |
| CLK_ENABLE, |
| CLK_DISABLE, |
| }; |
| |
| typedef struct { |
| platform_proxy_req_t header; |
| uint32_t index; |
| } rpc_clk_req_t; |
| |
| } // namespace platform_bus |