/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2019-08-29 zdzn first version * 2020-09-10 bigmagic add other mbox option */ /* mailbox message buffer */ #include "mbox.h" #include "mmu.h" volatile unsigned int *mbox = (volatile unsigned int *) MBOX_ADDR; #define BUS_ADDRESS(phys) (((phys) & ~0xC0000000) | 0xC0000000) /** * Make a mailbox call. Returns 0 on failure, non-zero on success */ int mbox_call(unsigned char ch, int mmu_enable) { unsigned int r = (((MBOX_ADDR) & ~0xF) | (ch & 0xF)); if (mmu_enable) { r = BUS_ADDRESS(r); } /* wait until we can write to the mailbox */ do { __asm__ volatile ("nop"); } while (*MBOX_STATUS & MBOX_FULL); /* write the address of our message to the mailbox with channel identifier */ *MBOX_WRITE = r; /* now wait for the response */ while (1) { /* is there a response? */ do { __asm__ volatile ("nop"); } while (*MBOX_STATUS & MBOX_EMPTY); /* is it a response to our message? */ if (r == *MBOX_READ) { /* is it a valid successful response? */ return mbox[1] == MBOX_RESPONSE; } } return 0; } int bcm271x_mbox_get_touch(void) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_GET_TOUCHBUF; mbox[3] = 4; // buffer size mbox[4] = 0; // len mbox[5] = 0; // id mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); return (int)(mbox[5] & ~0xC0000000); } int bcm271x_notify_reboot(void) { mbox[0] = 7 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_NOTIFY_REBOOT; // (the tag id) mbox[3] = 0x00000004; // length + 4 mbox[4] = 0x00000000; // size of the data mbox[5] = 0x00000000; // request mbox[6] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); return 0; } int bcm271x_notify_xhci_reset(void) { mbox[0] = 7 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_NOTIFY_XHCI_RESET; // (the tag id) mbox[3] = 0x00000004; // length + 4 mbox[4] = 0x00000004; // size of the data mbox[5] = 0x00100000; // request mbox[6] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); return 0; } int bcm271x_gpu_enable(void) { mbox[0] = 12 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_CLOCK_SET_RATE; mbox[3] = 0x00000008; // (the tag id) mbox[4] = 0x00000008; // (the tag id) mbox[5] = 5; // V3D mbox[6] = 250 * 1000 * 1000; mbox[7] = MBOX_TAG_ENABLE_QPU; // (the tag id) mbox[8] = 0x00000004; // (size of the buffer) mbox[9] = 0x00000004; // (size of the data) mbox[10] = 0x00000001; mbox[11] = MBOX_TAG_LAST; // end tag mbox_call(8, MMU_DISABLE); return mbox[1]; } int bcm271x_mbox_hardware_get_model(void) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_HARDWARE_GET_MODEL; mbox[3] = 4; // buffer size mbox[4] = 0; // len mbox[5] = 0; mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); return mbox[5]; } int bcm271x_mbox_hardware_get_revison(void) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_HARDWARE_GET_REV; mbox[3] = 4; // buffer size mbox[4] = 0; // len mbox[5] = 0; mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); return mbox[5]; } int bcm271x_mbox_hardware_get_mac_address(uint8_t *mac) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_HARDWARE_GET_MAC_ADDRESS; mbox[3] = 6; // buffer size mbox[4] = 0; // len mbox[5] = 0; mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); char *mac_str = (char *)&mbox[5]; mac[0] = mac_str[0]; mac[1] = mac_str[1]; mac[2] = mac_str[2]; mac[3] = mac_str[3]; mac[4] = mac_str[4]; mac[5] = mac_str[5]; return 0; } int bcm271x_mbox_hardware_get_serial(rt_uint64_t *sn) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_HARDWARE_GET_SERIAL; mbox[3] = 8; // buffer size mbox[4] = 0; // len mbox[5] = 0; mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); sn = (rt_uint64_t *)&mbox[5]; return 0; } int bcm271x_mbox_hardware_get_arm_memory(rt_uint32_t *base, rt_uint32_t *size) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_HARDWARE_GET_ARM_MEMORY; mbox[3] = 8; // buffer size mbox[4] = 0; // len mbox[5] = 0; mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); *base = mbox[5]; *size = mbox[6]; return 0; } int bcm271x_mbox_hardware_get_vc_memory(rt_uint32_t *base, rt_uint32_t *size) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_HARDWARE_GET_VC_MEMORY; mbox[3] = 8; // buffer size mbox[4] = 0; // len mbox[5] = 0; mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); *base = mbox[5]; *size = mbox[6]; return 0; } int bcm271x_mbox_clock_get_turbo(void) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_CLOCK_GET_TURBO; mbox[3] = 8; // buffer size mbox[4] = 4; // len mbox[5] = 0; // id mbox[6] = 0; // val mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != 0) { return -1; } return mbox[6]; } int bcm271x_mbox_clock_set_turbo(int level) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_CLOCK_SET_TURBO; mbox[3] = 8; // buffer size mbox[4] = 8; // len mbox[5] = 0; // id mbox[6] = level ? 1 : 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != 0) { return -1; } return mbox[6]; } int bcm271x_mbox_clock_get_state(int id) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_CLOCK_GET_STATE; mbox[3] = 8; // buffer size mbox[4] = 4; // len mbox[5] = id; // id mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != id) { return -1; } return (mbox[6] & 0x3); } int bcm271x_mbox_clock_set_state(int id, int state) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_CLOCK_SET_STATE; mbox[3] = 8; // buffer size mbox[4] = 8; // len mbox[5] = id; // id mbox[6] = state & 0x3; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != id) { return -1; } return (mbox[6] & 0x3); } int bcm271x_mbox_clock_get_rate(int id) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_CLOCK_GET_RATE; mbox[3] = 8; // buffer size mbox[4] = 4; // len mbox[5] = id; // id mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != id) { return -1; } return mbox[6]; } int bcm271x_mbox_clock_set_rate(int id, int rate) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_CLOCK_SET_RATE; mbox[3] = 8; // buffer size mbox[4] = 8; // len mbox[5] = id; // id mbox[6] = rate; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != id) { return -1; } return mbox[6]; } int bcm271x_mbox_clock_get_max_rate(int id) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_CLOCK_GET_MAX_RATE; mbox[3] = 8; // buffer size mbox[4] = 4; // len mbox[5] = id; // id mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != id) { return -1; } return mbox[6]; } int bcm271x_mbox_clock_get_min_rate(int id) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_CLOCK_GET_MIN_RATE; mbox[3] = 8; // buffer size mbox[4] = 4; // len mbox[5] = id; // id mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != id) { return -1; } return mbox[6]; } int bcm271x_mbox_power_get_state(int id) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_POWER_GET_STATE; mbox[3] = 8; // buffer size mbox[4] = 4; // len mbox[5] = id; // id mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != id) { return -1; } return (mbox[6] & 0x3); } int bcm271x_mbox_power_set_state(int id, int state) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_POWER_SET_STATE; mbox[3] = 8; // buffer size mbox[4] = 8; // len mbox[5] = id; // id mbox[6] = state & 0x3; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != id) { return -1; } return (mbox[6] & 0x3); } int bcm271x_mbox_temp_get(void) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_TEMP_GET; mbox[3] = 8; // buffer size mbox[4] = 4; // len mbox[5] = 0; //id mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != 0) { return -1; } return mbox[6]; } int bcm271x_mbox_temp_get_max(void) { mbox[0] = 8 * 4; // length of the message mbox[1] = MBOX_REQUEST; // this is a request message mbox[2] = MBOX_TAG_TEMP_GET_MAX; mbox[3] = 8; // buffer size mbox[4] = 4; // len mbox[5] = 0; // id mbox[6] = 0; mbox[7] = MBOX_TAG_LAST; mbox_call(8, MMU_DISABLE); if (mbox[5] != 0) { return -1; } return mbox[6]; }