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// SPDX-License-Identifier: GPL-2.0 OR Apache-2.0
/*
* Copyright 2022 Qorvo US, Inc.
*
*/
#include <qmrom_utils.h>
#include <qmrom_log.h>
#include <qmrom_spi.h>
#include <qmrom.h>
#include <spi_rom_protocol.h>
int qm357xx_rom_probe_device(struct qmrom_handle *handle);
static void qmrom_free_stcs(struct qmrom_handle *h)
{
if (h->hstc)
qmrom_free(h->hstc);
if (h->sstc)
qmrom_free(h->sstc);
}
#ifdef CHECK_STCS
void check_stcs(const char *func, int line, struct qmrom_handle *h)
{
uint32_t *buff = (uint32_t *)h->hstc;
if (buff[MAX_STC_FRAME_LEN / sizeof(uint32_t)] != 0xfeeddeef) {
LOG_ERR("%s:%d - hstc %pK corrupted\n", func, line,
(void *)h->hstc);
} else {
LOG_ERR("%s:%d - hstc %pK safe\n", func, line, (void *)h->hstc);
}
buff = (uint32_t *)h->sstc;
if (buff[MAX_STC_FRAME_LEN / sizeof(uint32_t)] != 0xfeeddeef) {
LOG_ERR("%s:%d - sstc %pK corrupted\n", func, line,
(void *)h->sstc);
} else {
LOG_ERR("%s:%d - sstc %pK safe\n", func, line, (void *)h->sstc);
}
}
#endif
static int qmrom_allocate_stcs(struct qmrom_handle *h)
{
int rc = 0;
uint8_t *tx_buf = NULL, *rx_buf = NULL;
qmrom_alloc(tx_buf, MAX_STC_FRAME_LEN + sizeof(uint32_t));
if (tx_buf == NULL) {
rc = -ENOMEM;
goto out;
}
qmrom_alloc(rx_buf, MAX_STC_FRAME_LEN + sizeof(uint32_t));
if (rx_buf == NULL) {
qmrom_free(tx_buf);
rc = -ENOMEM;
goto out;
}
#ifdef CHECK_STCS
((uint32_t *)tx_buf)[MAX_STC_FRAME_LEN / sizeof(uint32_t)] = 0xfeeddeef;
((uint32_t *)rx_buf)[MAX_STC_FRAME_LEN / sizeof(uint32_t)] = 0xfeeddeef;
#endif
h->hstc = (struct stc *)tx_buf;
h->sstc = (struct stc *)rx_buf;
return rc;
out:
qmrom_free_stcs(h);
return rc;
}
int qmrom_pre_read(struct qmrom_handle *handle)
{
handle->hstc->all = 0;
handle->hstc->host_flags.pre_read = 1;
handle->hstc->ul = 1;
handle->hstc->len = 0;
handle->hstc->payload[0] = 0;
return qmrom_spi_transfer(handle->spi_handle, (char *)handle->sstc,
(const char *)handle->hstc,
sizeof(struct stc) + handle->hstc->len);
}
int qmrom_read(struct qmrom_handle *handle)
{
size_t rd_size = handle->sstc->len;
if (rd_size > MAX_STC_FRAME_LEN)
return SPI_ERR_INVALID_STC_LEN;
LOG_DBG("%s: reading %zu bytes...\n", __func__, rd_size);
memset(handle->hstc, 0, sizeof(struct stc) + rd_size);
handle->hstc->host_flags.read = 1;
handle->hstc->ul = 1;
handle->hstc->len = handle->sstc->len;
return qmrom_spi_transfer(handle->spi_handle, (char *)handle->sstc,
(const char *)handle->hstc,
sizeof(struct stc) + rd_size);
}
/*
* Unfortunately, A0, B0 and C0 have different
* APIs to get the chip version...
*
*/
int qmrom_probe_device(struct qmrom_handle *handle,
enum device_generation_e dev_gen_hint)
{
int rc = -1;
if (dev_gen_hint == DEVICE_GEN_QM357XX ||
dev_gen_hint == DEVICE_GEN_UNKNOWN)
rc = qm357xx_rom_probe_device(handle);
return rc;
}
struct qmrom_handle *qmrom_init(void *spi_handle, void *reset_handle,
void *ss_rdy_handle, void *ss_irq_handle,
int spi_speed, int comms_retries,
reset_device_fn reset,
enum device_generation_e dev_gen_hint)
{
struct qmrom_handle *handle;
int rc;
qmrom_alloc(handle, sizeof(struct qmrom_handle));
if (!handle) {
LOG_ERR("%s: Couldn't allocate %zu bytes...\n", __func__,
sizeof(struct qmrom_handle));
return NULL;
}
rc = qmrom_allocate_stcs(handle);
if (rc) {
LOG_ERR("%s: Couldn't allocate stcs...\n", __func__);
qmrom_free(handle);
return NULL;
}
handle->spi_handle = spi_handle;
handle->reset_handle = reset_handle;
handle->ss_rdy_handle = ss_rdy_handle;
handle->ss_irq_handle = ss_irq_handle;
handle->comms_retries = comms_retries;
handle->chip_rev = CHIP_REVISION_UNKNOWN;
handle->device_version = -1;
handle->spi_speed = spi_speed;
handle->dev_ops.reset = reset;
rc = qmrom_probe_device(handle, dev_gen_hint);
if (rc) {
LOG_ERR("%s: qmrom_probe_device returned %d!\n", __func__, rc);
qmrom_free_stcs(handle);
qmrom_free(handle);
return NULL;
}
check_stcs(__func__, __LINE__, handle);
return handle;
}
void qmrom_deinit(struct qmrom_handle *handle)
{
LOG_DBG("Deinitializing %pK\n", (void *)handle);
qmrom_free_stcs(handle);
qmrom_free(handle);
}
int qmrom_reboot_bootloader(struct qmrom_handle *handle)
{
int rc;
rc = qmrom_spi_set_cs_level(handle->spi_handle, 0);
if (rc) {
LOG_ERR("%s: spi_set_cs_level(0) failed with %d\n", __func__,
rc);
return rc;
}
qmrom_msleep(SPI_RST_LOW_DELAY_MS);
handle->dev_ops.reset(handle->reset_handle);
qmrom_msleep(SPI_RST_LOW_DELAY_MS);
rc = qmrom_spi_set_cs_level(handle->spi_handle, 1);
if (rc) {
LOG_ERR("%s: spi_set_cs_level(1) failed with %d\n", __func__,
rc);
return rc;
}
qmrom_msleep(SPI_RST_LOW_DELAY_MS);
return 0;
}
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