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https://github.com/qemu/qemu.git
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907b5105f1
Since commit a2ce7dbd91 ("meson: convert tests/qtest to meson"),
libqtest.h is under libqos/ directory, while libqtest.c is still in
qtest/. Move back to its original location to avoid mixing with libqos/.
Suggested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/*
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* MMC Host Controller Commands
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*
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* Copyright (c) 2021 Google LLC
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "qemu/osdep.h"
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#include "sdhci-cmd.h"
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#include "../libqtest.h"
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static ssize_t read_fifo(QTestState *qts, uint64_t reg, char *msg, size_t count)
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{
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uint32_t mask = 0xff;
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size_t index = 0;
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uint32_t msg_frag;
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int size;
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while (index < count) {
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size = count - index;
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if (size > 4) {
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size = 4;
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}
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msg_frag = qtest_readl(qts, reg);
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while (size > 0) {
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msg[index] = msg_frag & mask;
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if (msg[index++] == 0) {
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return index;
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}
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msg_frag >>= 8;
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--size;
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}
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}
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return index;
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}
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static void write_fifo(QTestState *qts, uint64_t reg, const char *msg,
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size_t count)
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{
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size_t index = 0;
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uint32_t msg_frag;
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int size;
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int frag_i;
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while (index < count) {
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size = count - index;
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if (size > 4) {
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size = 4;
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}
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msg_frag = 0;
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frag_i = 0;
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while (frag_i < size) {
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msg_frag |= ((uint32_t)msg[index++]) << (frag_i * 8);
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++frag_i;
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}
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qtest_writel(qts, reg, msg_frag);
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}
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}
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static void fill_block(QTestState *qts, uint64_t reg, int count)
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{
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while (--count >= 0) {
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qtest_writel(qts, reg, 0);
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}
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}
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void sdhci_cmd_regs(QTestState *qts, uint64_t base_addr, uint16_t blksize,
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uint16_t blkcnt, uint32_t argument, uint16_t trnmod,
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uint16_t cmdreg)
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{
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qtest_writew(qts, base_addr + SDHC_BLKSIZE, blksize);
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qtest_writew(qts, base_addr + SDHC_BLKCNT, blkcnt);
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qtest_writel(qts, base_addr + SDHC_ARGUMENT, argument);
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qtest_writew(qts, base_addr + SDHC_TRNMOD, trnmod);
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qtest_writew(qts, base_addr + SDHC_CMDREG, cmdreg);
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}
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ssize_t sdhci_read_cmd(QTestState *qts, uint64_t base_addr, char *msg,
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size_t count)
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{
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sdhci_cmd_regs(qts, base_addr, count, 1, 0,
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SDHC_TRNS_MULTI | SDHC_TRNS_READ | SDHC_TRNS_BLK_CNT_EN,
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SDHC_READ_MULTIPLE_BLOCK | SDHC_CMD_DATA_PRESENT);
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/* read sd fifo_buffer */
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ssize_t bytes_read = read_fifo(qts, base_addr + SDHC_BDATA, msg, count);
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sdhci_cmd_regs(qts, base_addr, 0, 0, 0,
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SDHC_TRNS_MULTI | SDHC_TRNS_READ | SDHC_TRNS_BLK_CNT_EN,
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SDHC_STOP_TRANSMISSION);
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return bytes_read;
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}
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void sdhci_write_cmd(QTestState *qts, uint64_t base_addr, const char *msg,
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size_t count, size_t blksize)
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{
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sdhci_cmd_regs(qts, base_addr, blksize, 1, 0,
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SDHC_TRNS_MULTI | SDHC_TRNS_WRITE | SDHC_TRNS_BLK_CNT_EN,
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SDHC_WRITE_MULTIPLE_BLOCK | SDHC_CMD_DATA_PRESENT);
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/* write to sd fifo_buffer */
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write_fifo(qts, base_addr + SDHC_BDATA, msg, count);
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fill_block(qts, base_addr + SDHC_BDATA, (blksize - count) / 4);
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sdhci_cmd_regs(qts, base_addr, 0, 0, 0,
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SDHC_TRNS_MULTI | SDHC_TRNS_WRITE | SDHC_TRNS_BLK_CNT_EN,
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SDHC_STOP_TRANSMISSION);
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}
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