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nuttx/drivers/modem/altair/altmdm_spi.c
Xiang Xiao 0536953ded Kernel module should prefer functions with nx/kmm prefix 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-01-13 08:57:58 +01:00

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/****************************************************************************
* drivers/modem/altmdm/altmdm_spi.c
*
* Copyright 2018 Sony Semiconductor Solutions Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of Sony Semiconductor Solutions Corporation nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <string.h>
#include <nuttx/kmalloc.h>
#include <nuttx/signal.h>
#include <nuttx/spi/spi.h>
#include <nuttx/modem/altmdm.h>
#include "altmdm_sys.h"
#include "altmdm_pm.h"
#include "altmdm_pm_state.h"
#if defined(CONFIG_MODEM_ALTMDM)
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define EVENT_BIT(b) (1<<(b))
#define EVENT_NONE (0)
#define EVENT_TXREQ EVENT_BIT(0)
#define EVENT_RXREQ EVENT_BIT(1)
#define EVENT_CANCEL EVENT_BIT(2)
#define EVENT_EXIT EVENT_BIT(3)
#define EVENT_RXRDY EVENT_BIT(4)
#define EVENT_RXBUFRDY EVENT_BIT(5)
#define EVENT_TX_DONE EVENT_BIT(6)
#define EVENT_RX_DONE EVENT_BIT(7)
#define EVENT_SLEEPREQ EVENT_BIT(8)
#define EVENT_SLEEP_DONE EVENT_BIT(9)
#define EVENT_SV_TIMER_EXP EVENT_BIT(10)
#define EVENT_XFERRDY EVENT_BIT(11)
#define EVENT_REQMASK (EVENT_TXREQ | EVENT_RXREQ | EVENT_SLEEPREQ | \
EVENT_SV_TIMER_EXP)
#define EVENT_TRANS_WAIT (EVENT_TXREQ | EVENT_RXREQ | EVENT_RXBUFRDY | \
EVENT_SLEEPREQ | EVENT_SV_TIMER_EXP | EVENT_EXIT)
#if defined(CONFIG_MODEM_ALTMDM_XFER_TASK_PRIORITY)
# define XFER_TASK_PRI (CONFIG_MODEM_ALTMDM_XFER_TASK_PRIORITY)
#else
# define XFER_TASK_PRI (170)
#endif
#define XFER_TASK_STKSIZE (1536)
#define XFER_TASK_NAME "altmdm_xfer_task"
#if defined(CONFIG_MODEM_ALTMDM_MAX_PACKET_SIZE)
# if ((CONFIG_MODEM_ALTMDM_MAX_PACKET_SIZE & 0x3) != 0)
# error MODEM_ALTMDM_MAX_PACKET_SIZE must be aligned 0x4 (4B)
# endif
# define MAX_PKT_SIZE (CONFIG_MODEM_ALTMDM_MAX_PACKET_SIZE)
#else
# define MAX_PKT_SIZE (2064)
#endif
#define UNIT_SIZE (4)
#define RX_ENABLE (0)
#define RX_DISABLE (1)
#define SLEEP_OK (0)
#define SLEEP_NG (-EBUSY)
/* Timeout is counted in units of millisecond. */
#define WAIT_RXREQ_TIMEOUT (5)
#define WAIT_RXREQ_HEADER_TIMEOUT (5 * 1000)
#define WAIT_XFERRDY_TIMEOUT (25 * 1000)
#if defined(CONFIG_MODEM_ALTMDM_SLEEP_TIMER_VAL)
# if (CONFIG_MODEM_ALTMDM_SLEEP_TIMER_VAL < 20)
# error MODEM_ALTMDM_SLEEP_TIMER_VAL too small
# endif
# define SV_TIMER_TIMOUT_VAL (CONFIG_MODEM_ALTMDM_SLEEP_TIMER_VAL)
#else
# define SV_TIMER_TIMOUT_VAL (20)
#endif
#define WRITE_WAIT_TIMEOUT (ALTMDM_SYS_FLAG_TMOFEVR)
#define SREQ_WAIT_TIMEOUT (ALTMDM_SYS_FLAG_TMOFEVR)
#define YIELD_TASK_NOBUFF (100 * 1000) /* microsecond */
/* Defines for transfer mode */
#define MODE_RXDATA (0) /* Data receive mode. */
#define MODE_TXDATA (1) /* Data send mode. */
#define MODE_TRXDATA (2) /* Data send and receive mode. */
#define MODE_RXDATANOBUFF (3) /* Data receive mode when there is no
* receiving buffer.
*/
#define MODE_TRXDATANOBUFF (4) /* Data send and receive mode when
* there is no receiving buffer.
*/
#define MODE_RXINVALID (5) /* Data receive mode when receiving
* header is wrong.
*/
#define MODE_TRXHEADERFAILTXREQ (6) /* Data send and receive mode when
* header transfer fails. Send request
* triggered.
*/
#define MODE_TRXHEADERFAILRXREQ (7) /* Data receive mode when header
* transfer fails. Receive request
* triggered.
*/
#define MODE_RXRESET (8) /* Reset packet receive mode. */
#define MODE_TRXRESET (9) /* Data send and reset packet receive
* mode.
*/
/* Defines for transfer result code */
#define TRANS_OK (1) /* OK. */
#define TRANS_OK_RXDATANOBUFF (-1) /* OK when MODE_RXDATANOBUFF mode. */
#define TRANS_OK_TRXDATANORXBUFF (-2) /* OK when MODE_TRXDATANOBUFF mode. */
#define TRANS_RXINVALID (-3) /* NG when MODE_RXINVALID mode. */
#define TRANS_WAITRCVRTMO (-4) /* NG when receiver ready timeout. */
#define TRANS_OK_RCVBUFFUL (-5) /* OK when receiver is buffer full. */
#define RESET_BOOTSTAT_BOOTING (0) /* Boot stat: booting */
#define RESET_BOOTSTAT_UPDATING (1) /* Boot stat: updating */
#define STAT_INF_GET_BOOTSTAT (1 << 1) /* Status info: Get bootstatus bit */
#define STAT_INF_RESET (1 << 2) /* Status info: Reset bit */
#define STAT_INF_BUFFFULL (1 << 3) /* Status info: Buffer full bit */
#define STAT_INF_IS_RESET(info) ((info & STAT_INF_RESET) >> 2)
#define STAT_INF_IS_BUFF_FULL(info) ((info & STAT_INF_BUFFFULL) >> 3)
/****************************************************************************
* Private Data
****************************************************************************/
static struct altmdm_dev_s *g_privdata = NULL;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: svtimer_handler
*
* Description:
* Timeout handler for supervisory timer.
*
****************************************************************************/
static void svtimer_handler(int signo, FAR siginfo_t * info,
FAR void *ucontext)
{
FAR struct altmdm_dev_s *priv =
(FAR struct altmdm_dev_s *)(info->si_value.sival_ptr);
struct altmdm_sys_flagstate_s flag_status;
altmdm_sys_referflag(&priv->spidev.xfer_flag, &flag_status);
if (!(flag_status.flag_pattern & EVENT_SV_TIMER_EXP))
{
altmdm_sys_setflag(&priv->spidev.xfer_flag, EVENT_SV_TIMER_EXP);
}
}
/****************************************************************************
* Name: init_svtimer
*
* Description:
* Initialize supervisory timer.
*
****************************************************************************/
static int init_svtimer(FAR struct altmdm_dev_s *priv)
{
priv->spidev.sleep_param.sv_timerid = NULL;
return 0;
}
/****************************************************************************
* Name: delete_svtimer
*
* Description:
* Delete supervisory timer.
*
****************************************************************************/
static int delete_svtimer(FAR struct altmdm_dev_s *priv)
{
altmdm_sys_stoptimer(priv->spidev.sleep_param.sv_timerid);
priv->spidev.sleep_param.sv_timerid = NULL;
return 0;
}
/****************************************************************************
* Name: start_svtimer
*
* Description:
* Start supervisory timer.
*
****************************************************************************/
static int start_svtimer(FAR struct altmdm_dev_s *priv)
{
timer_t timerid;
timerid = altmdm_sys_starttimer(SV_TIMER_TIMOUT_VAL, SV_TIMER_TIMOUT_VAL,
svtimer_handler, 0, priv);
if (timerid == NULL)
{
return -1;
}
priv->spidev.sleep_param.sv_timerid = timerid;
return 0;
}
/****************************************************************************
* Name: stop_svtimer
*
* Description:
* Stop supervisory timer.
*
****************************************************************************/
static int stop_svtimer(FAR struct altmdm_dev_s *priv)
{
altmdm_sys_stoptimer(priv->spidev.sleep_param.sv_timerid);
priv->spidev.sleep_param.sv_timerid = NULL;
return 0;
}
/****************************************************************************
* Name: do_dmaxfer
*
* Description:
* Execute DMA transfer.
*
****************************************************************************/
static int do_dmaxfer(FAR struct altmdm_dev_s *priv, FAR void *tx_buffer,
FAR void *rx_buffer, size_t dma_size)
{
SPI_EXCHANGE(priv->spi, tx_buffer, rx_buffer, dma_size);
return 0;
}
/****************************************************************************
* Name: get_dmasize
*
* Description:
* Get the data size used for DMA transfer.
*
****************************************************************************/
static int get_dmasize(FAR struct altmdm_dev_s *priv, int data_size)
{
return data_size;
}
/****************************************************************************
* Name: wait_receiverready
*
* Description:
* Wait until receiver is ready.
*
****************************************************************************/
static int wait_receiverready(FAR struct altmdm_dev_s *priv,
uint32_t timeout_ms)
{
int ret;
uint32_t ptn;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
ret = altmdm_sys_waitflag(&spidev->xfer_flag, EVENT_RXREQ,
ALTMDM_SYS_FLAG_WMODEOR, &ptn,
timeout_ms);
if (ret != 0)
{
m_err("receiver ready timeout.\n");
return TRANS_WAITRCVRTMO;
}
return 0;
}
/****************************************************************************
* Name: wait_xferready
*
* Description:
* Wait until xfer is ready.
*
****************************************************************************/
static int wait_xferready(FAR struct altmdm_dev_s *priv)
{
int ret;
uint32_t ptn;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
ret = altmdm_sys_waitflag(&spidev->xferready_flag, EVENT_XFERRDY,
ALTMDM_SYS_FLAG_WMODEOR, &ptn,
WAIT_XFERRDY_TIMEOUT);
if (ret != 0)
{
m_err("xfer ready timeout.\n");
/* Make it ready to transfer.
* It is assumed that modem does not implement reset packet.
*/
if (!spidev->is_xferready)
{
spidev->is_xferready = true;
m_info("ready to xfer\n");
}
return -1;
}
return 0;
}
/****************************************************************************
* Name: notify_xferready
*
* Description:
* Notify xfer is ready.
*
****************************************************************************/
static int notify_xferready(FAR struct altmdm_dev_s *priv)
{
int ret;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
ret = altmdm_sys_setflag(&spidev->xferready_flag, EVENT_XFERRDY);
return ret;
}
/****************************************************************************
* Name: init_rxbuffer
*
* Description:
* Initialize the receive buffer used for data transfer.
*
****************************************************************************/
static void init_rxbuffer(FAR struct altmdm_dev_s *priv,
FAR struct altmdm_spi_rxbuff_s **rxbuff,
uint32_t unit_size)
{
FAR struct altmdm_spi_rxbuff_s *l_buff = NULL;
l_buff = (FAR struct altmdm_spi_rxbuff_s *)kmm_malloc
(sizeof(struct altmdm_spi_rxbuff_s));
if (l_buff == NULL)
{
m_err("cannot allocate memory for received buffer\n");
}
else
{
memset(l_buff, 0x00, sizeof(struct altmdm_spi_rxbuff_s));
l_buff->buff_addr = (char *)kmm_malloc(unit_size);
if (l_buff->buff_addr == NULL)
{
m_err("cannot allocate memory for received buffer\n");
kmm_free(l_buff);
l_buff = NULL;
}
else
{
l_buff->buff_size = unit_size;
}
}
*rxbuff = l_buff;
}
/****************************************************************************
* Name: uninit_rxbuffer
*
* Description:
* Uninitialize the receive buffer used for data transfer.
*
****************************************************************************/
static void uninit_rxbuffer(FAR struct altmdm_dev_s *priv,
FAR struct altmdm_spi_rxbuff_s *rxbuff)
{
if (rxbuff != NULL)
{
if (rxbuff->buff_addr != NULL)
{
kmm_free(rxbuff->buff_addr);
}
kmm_free(rxbuff);
}
}
/****************************************************************************
* Name: alloc_rxbuffer
*
* Description:
* Get the allocated receive buffer.
*
****************************************************************************/
static void alloc_rxbuffer(FAR struct altmdm_dev_s *priv,
FAR struct altmdm_spi_rxbuff_s **rxbuff,
uint32_t size)
{
if (priv->spidev.rxbuffinfo.free_buff == NULL)
{
m_err("cannot allocate free rx buffer\n");
}
else
{
*rxbuff = priv->spidev.rxbuffinfo.free_buff;
priv->spidev.rxbuffinfo.free_buff = NULL;
}
}
/****************************************************************************
* Name: free_rxbuffer
*
* Description:
* Release allocated receive buffer.
*
****************************************************************************/
static void free_rxbuffer(FAR struct altmdm_dev_s *priv,
FAR struct altmdm_spi_rxbuff_s *rxbuff)
{
if (priv->spidev.rxbuffinfo.free_buff != NULL)
{
m_err("cannot free rx buffer\n");
}
else
{
priv->spidev.rxbuffinfo.free_buff = rxbuff;
}
}
/****************************************************************************
* Name: create_rxbufffifo
*
* Description:
* Create receiving FIFO. This fifo is used when copying to the buffer
* specified by the user.
*
****************************************************************************/
static void create_rxbufffifo(FAR struct altmdm_dev_s *priv)
{
FAR struct altmdm_spi_rxbufffifo_s *fifo = &priv->spidev.rxbuffinfo.fifo;
init_rxbuffer(priv, &priv->spidev.rxbuffinfo.free_buff, MAX_PKT_SIZE);
fifo->head = NULL;
fifo->tail = NULL;
altmdm_sys_initcsem(&fifo->csem);
}
/****************************************************************************
* Name: destroy_rxbufffifo
*
* Description:
* Destroy receiving FIFO.
*
****************************************************************************/
static void destroy_rxbufffifo(FAR struct altmdm_dev_s *priv)
{
FAR struct altmdm_spi_rxbufffifo_s *fifo = &priv->spidev.rxbuffinfo.fifo;
uninit_rxbuffer(priv, priv->spidev.rxbuffinfo.free_buff);
altmdm_sys_deletecsem(&fifo->csem);
}
/****************************************************************************
* Name: put_rxbufffifo
*
* Description:
* Put date into the receiving FIFO.
*
****************************************************************************/
static void put_rxbufffifo(FAR struct altmdm_dev_s *priv,
FAR struct altmdm_spi_rxbuff_s *rxbuff)
{
FAR struct altmdm_spi_rxbufffifo_s *fifo = &priv->spidev.rxbuffinfo.fifo;
irqstate_t flags;
flags = enter_critical_section();
if (fifo->head == NULL)
{
fifo->head = rxbuff;
fifo->tail = rxbuff;
rxbuff->next = NULL;
}
else
{
fifo->tail->next = rxbuff;
fifo->tail = rxbuff;
rxbuff->next = NULL;
}
leave_critical_section(flags);
altmdm_sys_postcsem(&fifo->csem);
}
/****************************************************************************
* Name: get_rxbufffifo
*
* Description:
* Get date from the receiving FIFO. If the FIFO is empty,
* it is kept waiting until data is put in the FIFO.
*
****************************************************************************/
static void get_rxbufffifo(FAR struct altmdm_dev_s *priv,
FAR struct altmdm_spi_rxbuff_s **rxbuff)
{
FAR struct altmdm_spi_rxbufffifo_s *fifo = &priv->spidev.rxbuffinfo.fifo;
irqstate_t flags;
*rxbuff = NULL;
altmdm_sys_waitcsem(&fifo->csem);
flags = enter_critical_section();
if (fifo->head != NULL)
{
*rxbuff = fifo->head;
fifo->head = fifo->head->next;
}
leave_critical_section(flags);
}
/****************************************************************************
* Name: abort_get_rxbufffifo
*
* Description:
* If waiting for data to be put in the FIFO, then abort it.
*
****************************************************************************/
static void abort_get_rxbufffifo(FAR struct altmdm_dev_s *priv)
{
int val;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
FAR struct altmdm_spi_rxbufffifo_s *fifo = &priv->spidev.rxbuffinfo.fifo;
if (!altmdm_sys_getcsemvalue(&fifo->csem, &val))
{
if (val < 0)
{
spidev->rx_param.rxabort = true;
altmdm_sys_postcsem(&fifo->csem);
}
}
}
/****************************************************************************
* Name: clear_txheader
*
* Description:
* Clear the header for transmission.
*
****************************************************************************/
static void clear_txheader(FAR struct altmdm_dev_s *priv)
{
memset(&priv->spidev.tx_param.header, 0x00,
sizeof(struct altmdm_spi_xferhdr_s));
}
/****************************************************************************
* Name: clear_rxheader
*
* Description:
* Clear the header for reception.
*
****************************************************************************/
static void clear_rxheader(FAR struct altmdm_dev_s *priv)
{
memset(&priv->spidev.rx_param.header, 0x00,
sizeof(struct altmdm_spi_xferhdr_s));
}
/****************************************************************************
* Name: set_txheader_datasize
*
* Description:
* Set transmission data size in the header.
*
****************************************************************************/
static void set_txheader_datasize(FAR struct altmdm_dev_s *priv,
int total_size, int actual_size)
{
FAR struct altmdm_spi_xferhdr_s *tx_header = &priv->spidev.tx_param.header;
tx_header->header[0] =
(tx_header->header[0] & 0xf0) + ((total_size >> 10) & 0x0000000f);
tx_header->header[1] = (total_size >> 2) & 0x000000ff;
tx_header->header[2] =
((total_size & 0x00000003) << 6) + ((actual_size >> 8) & 0x0000003f);
tx_header->header[3] = (actual_size & 0x000000ff);
}
/****************************************************************************
* Name: set_txheader_possibleofrx
*
* Description:
* Set flag in the header. The flag indicates that master can receive data.
*
****************************************************************************/
static void set_txheader_possibleofrx(FAR struct altmdm_dev_s *priv,
bool possible)
{
FAR struct altmdm_spi_xferhdr_s *tx_header = &priv->spidev.tx_param.header;
if (!possible)
{
tx_header->header[0] = 0x80 + (tx_header->header[0] & 0x7f);
}
else
{
tx_header->header[0] = 0x00 + (tx_header->header[0] & 0x7f);
}
}
/****************************************************************************
* Name: set_txheader_sleepreq
*
* Description:
* Set flag in the header. The flag indicates that sleep request.
*
****************************************************************************/
static void set_txheader_sleepreq(FAR struct altmdm_dev_s *priv)
{
FAR struct altmdm_spi_xferhdr_s *tx_header = &priv->spidev.tx_param.header;
tx_header->header[0] = 0x10 + (tx_header->header[0] & 0xef);
}
/****************************************************************************
* Name: show_txheader
*
* Description:
* Show header for transmission.
*
****************************************************************************/
static void show_txheader(FAR struct altmdm_dev_s *priv)
{
#ifdef MODEM_ALTMDM_DEBUG
FAR struct altmdm_spi_xferhdr_s *tx_header = &priv->spidev.tx_param.header;
m_info("[TXHDR]=%02x,%02x,%02x,%02x\n",
tx_header->header[0], tx_header->header[1],
tx_header->header[2], tx_header->header[3]);
#endif
}
/****************************************************************************
* Name: parse_rxheader
*
* Description:
* Parse header for receiving.
*
****************************************************************************/
static void parse_rxheader(FAR struct altmdm_dev_s *priv,
FAR int32_t *total_size, FAR int32_t *actual_size,
FAR int *is_reset, FAR int32_t *is_bufful)
{
FAR struct altmdm_spi_xferhdr_s *rx_header = &priv->spidev.rx_param.header;
m_info("[RXHDR]%02x,%02x,%02x,%02x\n",
rx_header->header[0], rx_header->header[1],
rx_header->header[2], rx_header->header[3]);
*total_size = ((rx_header->header[0] & 0x0f) << 10) +
((rx_header->header[1] & 0xff) << 2) + (rx_header->header[2] >> 6);
*actual_size = ((rx_header->header[2] & 0x3f) << 8) +
(rx_header->header[3] & 0xff);
priv->spidev.rx_param.status_info = (rx_header->header[0] & 0xf0) >> 4;
*is_reset = STAT_INF_IS_RESET(priv->spidev.rx_param.status_info);
*is_bufful = STAT_INF_IS_BUFF_FULL(priv->spidev.rx_param.status_info);
m_info("t=%d a=%d r=%d b=%d\n",
*total_size, *actual_size, *is_reset, *is_bufful);
return;
}
/****************************************************************************
* Name: verify_rxheader
*
* Description:
* Verify header for receiving.
*
****************************************************************************/
static int verify_rxheader(FAR struct altmdm_dev_s *priv,
int total_size, int actual_size)
{
int calc_total_size;
if ((total_size == 0) || (actual_size == 0))
{
return -1;
}
if ((total_size > MAX_PKT_SIZE) || (actual_size > MAX_PKT_SIZE))
{
return -1;
}
if (total_size % UNIT_SIZE)
{
return -1;
}
if (total_size != actual_size)
{
calc_total_size = ((actual_size / UNIT_SIZE) + 1) * UNIT_SIZE;
if (total_size != calc_total_size)
{
return -1;
}
}
return 0;
}
/****************************************************************************
* Name: do_xferheader
*
* Description:
* Execute header transfer.
*
****************************************************************************/
static int do_xferheader(FAR struct altmdm_dev_s *priv,
uint32_t is_rxreq, uint32_t is_txreq,
uint32_t is_sleepreq, uint32_t is_rcvrready)
{
int ret;
int dma_xfer_size;
struct altmdm_spi_dev_s *spidev = &priv->spidev;
bool possibleofrx = true;
/* Make transfer header */
clear_txheader(priv);
if ((is_sleepreq) || (is_txreq))
{
DEBUGASSERT(priv->lower);
priv->lower->master_request(true);
if (is_sleepreq)
{
set_txheader_sleepreq(priv);
}
else
{
set_txheader_datasize(priv, spidev->tx_param.total_size,
spidev->tx_param.actual_size);
}
}
if (!is_sleepreq)
{
alloc_rxbuffer(priv, &spidev->rx_param.rxbuff, MAX_PKT_SIZE);
if (spidev->rx_param.rxbuff == NULL)
{
possibleofrx = false;
}
set_txheader_possibleofrx(priv, possibleofrx);
}
show_txheader(priv);
/* Wait for Receiver Ready to receive. */
if ((!is_rxreq) && (!is_rcvrready))
{
ret = wait_receiverready(priv, WAIT_RXREQ_HEADER_TIMEOUT);
if (ret < 0)
{
goto trans_header_error;
}
}
/* Get DMA transfer size */
dma_xfer_size = get_dmasize(priv, sizeof(struct altmdm_spi_xferhdr_s));
ret = do_dmaxfer(priv, (FAR void *)&spidev->tx_param.header,
(FAR void *)&spidev->rx_param.header, dma_xfer_size);
if (ret < 0)
{
goto trans_header_error;
}
return ret;
trans_header_error:
m_err("ERR:%04d Transfer Header Failed. ret = %d.\n", __LINE__, ret);
/* Clear Header */
clear_rxheader(priv);
set_txheader_datasize(priv, 0, 0);
return ret;
}
/****************************************************************************
* Name: do_receivedata
*
* Description:
* Executes the receive only transfer mode.
*
****************************************************************************/
static int do_receivedata(FAR struct altmdm_dev_s *priv)
{
int ret;
int dma_xfer_size;
FAR void *rxbuff;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
/* Wait for Receiver Ready to receive. */
ret = wait_receiverready(priv, WAIT_RXREQ_TIMEOUT);
if (ret >= 0)
{
/* Get DMA transfer size */
dma_xfer_size = get_dmasize(priv, spidev->rx_param.total_size);
rxbuff = spidev->rx_param.rxbuff->buff_addr;
/* Do DMA transfer */
ret = do_dmaxfer(priv, NULL, rxbuff, dma_xfer_size);
}
if (ret < 0)
{
m_err("Rcv Data Failed. ret = %d.\n", ret);
clear_rxheader(priv);
}
return ret;
}
/****************************************************************************
* Name: do_senddata
*
* Description:
* Executes the transmission only transfer mode.
*
****************************************************************************/
static int do_senddata(FAR struct altmdm_dev_s *priv)
{
int ret;
int dma_xfer_size;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
/* Wait for Receiver Ready to receive. */
ret = wait_receiverready(priv, WAIT_RXREQ_TIMEOUT);
if (ret >= 0)
{
/* Get DMA transfer size */
dma_xfer_size = get_dmasize(priv, spidev->tx_param.total_size);
/* Do DMA transfer */
ret = do_dmaxfer(priv, (FAR void *)spidev->tx_param.buff_addr,
NULL, dma_xfer_size);
}
if (ret < 0)
{
m_err("ERR:%04d Snd Data Failed. ret = %d.\n", __LINE__, ret);
clear_txheader(priv);
}
return ret;
}
/****************************************************************************
* Name: do_trxdata
*
* Description:
* Executes the transmission and receive transfer mode.
*
****************************************************************************/
static int do_trxdata(FAR struct altmdm_dev_s *priv)
{
int ret;
int xfer_size;
int dma_xfer_size;
FAR void *rxbuff;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
/* Wait for Receiver Ready to receive. */
ret = wait_receiverready(priv, WAIT_RXREQ_TIMEOUT);
if (ret >= 0)
{
/* Choose the larger one. */
if (spidev->tx_param.total_size < spidev->rx_param.total_size)
{
xfer_size = spidev->rx_param.total_size;
}
else
{
xfer_size = spidev->tx_param.total_size;
}
rxbuff = spidev->rx_param.rxbuff->buff_addr;
/* Get DMA transfer size */
dma_xfer_size = get_dmasize(priv, xfer_size);
/* Do DMA transfer */
ret = do_dmaxfer(priv, (FAR void *)spidev->tx_param.buff_addr, rxbuff,
dma_xfer_size);
}
if (ret < 0)
{
m_err("ERR:%04d Trx Data Failed. ret = %d.\n", __LINE__, ret);
clear_txheader(priv);
clear_rxheader(priv);
}
return ret;
}
/****************************************************************************
* Name: do_receivedata_nobuff
*
* Description:
* Executes the receive only transfer mode. When receiving buffer cannot
* be prepared.
*
****************************************************************************/
static int do_receivedata_nobuff(FAR struct altmdm_dev_s *priv)
{
int ret;
int dma_xfer_size;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
/* Wait for Receiver Ready to receive. */
ret = wait_receiverready(priv, WAIT_RXREQ_TIMEOUT);
if (ret >= 0)
{
/* Get DMA transfer size */
dma_xfer_size = get_dmasize(priv, spidev->rx_param.total_size);
/* Do DMA transfer */
ret = do_dmaxfer(priv, NULL, NULL, dma_xfer_size);
}
if (ret < 0)
{
m_err("ERR:%04d Rcv Data Nobuff Failed. ret = %d.\n", __LINE__, ret);
clear_rxheader(priv);
}
else
{
ret = TRANS_OK_RXDATANOBUFF;
}
return ret;
}
/****************************************************************************
* Name: do_trxdata_norxbuff
*
* Description:
* Executes the transmission and receive transfer mode. When receiving
* buffer cannot be prepared.
*
****************************************************************************/
static int do_trxdata_norxbuff(FAR struct altmdm_dev_s *priv)
{
int ret;
int xfer_size;
int dma_xfer_size;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
/* Wait for Receiver Ready to receive. */
ret = wait_receiverready(priv, WAIT_RXREQ_TIMEOUT);
if (ret >= 0)
{
/* Choose the larger one. */
if (spidev->tx_param.total_size < spidev->rx_param.total_size)
{
xfer_size = spidev->rx_param.total_size;
}
else
{
xfer_size = spidev->tx_param.total_size;
}
/* Get DMA transfer size */
dma_xfer_size = get_dmasize(priv, xfer_size);
/* Do DMA transfer */
ret = do_dmaxfer(priv, (FAR void *)spidev->tx_param.buff_addr,
NULL, dma_xfer_size);
}
if (ret < 0)
{
m_err("ERR:%04d Trx Data Norxbuff Failed. ret = %d.\n", __LINE__, ret);
clear_txheader(priv);
clear_rxheader(priv);
}
else
{
ret = TRANS_OK_TRXDATANORXBUFF;
}
return ret;
}
/****************************************************************************
* Name: do_receivesleepdata
*
* Description:
* Executes the sleep data transfer mode.
*
****************************************************************************/
static int do_receivesleepdata(FAR struct altmdm_dev_s *priv, FAR int *resp)
{
int ret;
int dma_xfer_size;
char rxbuff[UNIT_SIZE];
/* Wait for Receiver Ready to receive. */
ret = wait_receiverready(priv, WAIT_RXREQ_TIMEOUT);
if (ret >= 0)
{
/* Get DMA transfer size */
dma_xfer_size = get_dmasize(priv, UNIT_SIZE);
/* Do DMA transfer */
ret = do_dmaxfer(priv, NULL, (FAR void *)rxbuff, dma_xfer_size);
}
if (ret < 0)
{
m_err("ERR:%04d Rcv Sleep Resp Data Failed. ret = %d.\n",
__LINE__, ret);
}
else
{
m_info("[SRESP] 0x%02x,0x%02x,0x%02x,0x%02x\n",
rxbuff[0], rxbuff[1],
rxbuff[2], rxbuff[3]);
if (!memcmp(rxbuff, "OK", 2))
{
*resp = SLEEP_OK;
}
else
{
*resp = SLEEP_NG;
}
}
return ret;
}
/****************************************************************************
* Name: do_receivereset
*
* Description:
* Executes the reset packet receive only transfer mode.
*
****************************************************************************/
static int do_receivereset(FAR struct altmdm_dev_s *priv)
{
int ret;
int dma_xfer_size;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
char rxbuff[UNIT_SIZE];
/* Wait for Receiver Ready to receive. */
ret = wait_receiverready(priv, WAIT_RXREQ_TIMEOUT);
if (ret >= 0)
{
/* Get DMA transfer size */
dma_xfer_size = get_dmasize(priv, spidev->rx_param.total_size);
/* Do DMA transfer */
ret = do_dmaxfer(priv, NULL, (FAR void *)rxbuff, dma_xfer_size);
}
if (ret < 0)
{
m_err("ERR:%04d Rcv Reset Failed. ret = %d.\n", __LINE__, ret);
clear_rxheader(priv);
}
else
{
if ((STAT_INF_GET_BOOTSTAT | STAT_INF_RESET) ==
(spidev->rx_param.
status_info & (STAT_INF_GET_BOOTSTAT | STAT_INF_RESET)))
{
switch (rxbuff[0])
{
case RESET_BOOTSTAT_BOOTING:
altmdm_pm_set_bootstatus(priv,
MODEM_PM_ERR_RESET_BOOTSTAT_BOOTING);
break;
case RESET_BOOTSTAT_UPDATING:
altmdm_pm_set_bootstatus(priv,
MODEM_PM_ERR_RESET_BOOTSTAT_UPDATING);
break;
default:
m_err
("ERR:%04d Invalid payload of reset packet. " \
"%02x,%02x,%02x,%02x\n",
__LINE__, rxbuff[0], rxbuff[1], rxbuff[2], rxbuff[3]);
break;
}
}
else if (STAT_INF_RESET ==
(spidev->rx_param.status_info & STAT_INF_RESET))
{
altmdm_pm_set_bootstatus(priv, MODEM_PM_ERR_RESET_BOOTSTAT_DONE);
}
else
{
m_err("ERR:%04d Unexpected status info. %04x\n", __LINE__,
spidev->rx_param.status_info);
}
}
return ret;
}
/****************************************************************************
* Name: do_trxreset
*
* Description:
* Executes the transmission and receive reset packet transfer mode.
*
****************************************************************************/
static int do_trxreset(FAR struct altmdm_dev_s *priv)
{
int ret;
int xfer_size;
int dma_xfer_size;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
/* Wait for Receiver Ready to receive. */
ret = wait_receiverready(priv, WAIT_RXREQ_TIMEOUT);
if (ret >= 0)
{
/* If a conflict occurs with the reset packet,
* the packet is transferred by the size specified
* by the receiving side. Discard the data on the sending side.
*/
xfer_size = spidev->rx_param.total_size;
/* Get DMA transfer size */
dma_xfer_size = get_dmasize(priv, xfer_size);
/* Do DMA transfer */
ret = do_dmaxfer(priv, NULL, NULL, dma_xfer_size);
}
if (ret < 0)
{
m_err("ERR:%04d Trx Reset Failed. ret = %d.\n", __LINE__, ret);
clear_txheader(priv);
clear_rxheader(priv);
}
return ret;
}
/****************************************************************************
* Name: do_xfersleep
*
* Description:
* Executes the sleep request.
*
****************************************************************************/
static int do_xfersleep(FAR struct altmdm_dev_s *priv, uint32_t is_rcvrready)
{
int ret;
int resp = 0;
int is_reset = 0;
int32_t total_size;
int32_t actual_size;
int32_t is_bufful;
/* Transfer header for sleep request */
ret = do_xferheader(priv, 0, 0, 1, is_rcvrready);
if (ret >= 0)
{
parse_rxheader(priv, &total_size, &actual_size, &is_reset, &is_bufful);
/* Transfer data for sleep request */
ret = do_receivesleepdata(priv, &resp);
if (ret >= 0)
{
ret = resp;
}
}
if (ret < 0)
{
ret = SLEEP_NG;
}
DEBUGASSERT(priv && priv->lower);
priv->lower->master_request(false);
if (is_reset)
{
if (!priv->spidev.is_xferready)
{
priv->spidev.is_xferready = true;
m_info("ready to xfer\n");
notify_xferready(priv);
}
altmdm_pm_notify_reset(priv);
}
return ret;
}
/****************************************************************************
* Name: decide_xfermode
*
* Description:
* Decide transfer mode.
*
****************************************************************************/
static uint32_t decide_xfermode(FAR struct altmdm_dev_s *priv,
uint32_t is_rxreq, uint32_t is_txreq,
int ret)
{
int retval;
int is_reset;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
uint32_t mode = MODE_RXINVALID;
if (ret < 0)
{
if (is_txreq)
{
mode = MODE_TRXHEADERFAILTXREQ;
}
else
{
mode = MODE_TRXHEADERFAILRXREQ;
}
if (spidev->rx_param.rxbuff != NULL)
{
free_rxbuffer(priv, spidev->rx_param.rxbuff);
spidev->rx_param.rxbuff = NULL;
}
}
else
{
parse_rxheader(priv, &spidev->rx_param.total_size,
&spidev->rx_param.actual_size, &is_reset,
&spidev->tx_param.is_bufful);
if (is_rxreq)
{
retval = verify_rxheader(priv, spidev->rx_param.total_size,
spidev->rx_param.actual_size);
if (retval != 0)
{
m_info("RX header:total=0x%02x, actual=0x%02x.\n",
spidev->rx_param.total_size,
spidev->rx_param.actual_size);
if (spidev->rx_param.rxbuff != NULL)
{
free_rxbuffer(priv, spidev->rx_param.rxbuff);
spidev->rx_param.rxbuff = NULL;
}
if (!is_txreq)
{
return mode;
}
is_rxreq = 0;
m_info("RX Header invalid. But Send will be done.\n");
}
}
else if ((spidev->rx_param.actual_size != 0) ||
(spidev->rx_param.total_size != 0))
{
retval = verify_rxheader(priv, spidev->rx_param.total_size,
spidev->rx_param.actual_size);
if (retval == 0)
{
is_rxreq = 1;
}
}
/* Diceide transfer mode here. */
if (is_txreq)
{
if (is_rxreq)
{
if (is_reset)
{
if (spidev->rx_param.rxbuff != NULL)
{
free_rxbuffer(priv, spidev->rx_param.rxbuff);
spidev->rx_param.rxbuff = NULL;
}
mode = MODE_TRXRESET;
}
else
{
if (spidev->rx_param.rxbuff == NULL)
{
mode = MODE_TRXDATANOBUFF;
}
else
{
mode = MODE_TRXDATA;
spidev->rx_param.rxbuff->rx_size =
spidev->rx_param.actual_size;
m_info("received size = %d.\n",
spidev->rx_param.rxbuff->rx_size);
}
}
}
else
{
if (spidev->rx_param.rxbuff != NULL)
{
free_rxbuffer(priv, spidev->rx_param.rxbuff);
spidev->rx_param.rxbuff = NULL;
}
mode = MODE_TXDATA;
}
}
else
{
if (is_reset)
{
if (spidev->rx_param.rxbuff != NULL)
{
free_rxbuffer(priv, spidev->rx_param.rxbuff);
spidev->rx_param.rxbuff = NULL;
}
mode = MODE_RXRESET;
}
else
{
if (spidev->rx_param.rxbuff == NULL)
{
mode = MODE_RXDATANOBUFF;
}
else
{
mode = MODE_RXDATA;
spidev->rx_param.rxbuff->rx_size =
spidev->rx_param.actual_size;
m_info("received size = %d.\n",
spidev->rx_param.rxbuff->rx_size);
}
}
}
}
clear_rxheader(priv);
clear_txheader(priv);
return mode;
}
/****************************************************************************
* Name: done_xfer
*
* Description:
* Notify that transfer has completed.
*
****************************************************************************/
static void done_xfer(FAR struct altmdm_dev_s *priv, uint32_t xfer_mode,
int ret)
{
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
switch (xfer_mode)
{
case MODE_RXDATA:
if (ret < 0)
{
free_rxbuffer(priv, spidev->rx_param.rxbuff);
spidev->rx_param.rxbuff = NULL;
}
else
{
put_rxbufffifo(priv, spidev->rx_param.rxbuff);
spidev->rx_param.rxbuff = NULL;
}
break;
case MODE_TXDATA:
if (spidev->tx_param.is_bufful)
{
spidev->tx_param.is_bufful = 0;
spidev->tx_param.result = (ret < 0) ? ret : TRANS_OK_RCVBUFFUL;
}
else
{
spidev->tx_param.result = (ret < 0) ? ret : TRANS_OK;
}
altmdm_sys_setflag(&spidev->tx_param.done_flag, EVENT_TX_DONE);
break;
case MODE_TRXDATA:
if (spidev->tx_param.is_bufful)
{
spidev->tx_param.is_bufful = 0;
spidev->tx_param.result = (ret < 0) ? ret : TRANS_OK_RCVBUFFUL;
}
else
{
spidev->tx_param.result = (ret < 0) ? ret : TRANS_OK;
}
altmdm_sys_setflag(&spidev->tx_param.done_flag, EVENT_TX_DONE);
if (ret < 0)
{
free_rxbuffer(priv, spidev->rx_param.rxbuff);
spidev->rx_param.rxbuff = NULL;
}
else
{
put_rxbufffifo(priv, spidev->rx_param.rxbuff);
spidev->rx_param.rxbuff = NULL;
}
break;
case MODE_TRXDATANOBUFF:
if (spidev->tx_param.is_bufful)
{
spidev->tx_param.is_bufful = 0;
spidev->tx_param.result = (ret < 0) ? ret : TRANS_OK_RCVBUFFUL;
}
else
{
spidev->tx_param.result = (ret < 0) ? ret : TRANS_OK;
}
altmdm_sys_setflag(&spidev->tx_param.done_flag, EVENT_TX_DONE);
/* Yield the CPU so that the upper layer can execute
* the receiving process.
*/
nxsig_usleep(YIELD_TASK_NOBUFF);
break;
case MODE_TRXHEADERFAILTXREQ:
spidev->tx_param.result = ret;
altmdm_sys_setflag(&spidev->tx_param.done_flag, EVENT_TX_DONE);
break;
case MODE_RXRESET:
if (!spidev->is_xferready)
{
spidev->is_xferready = true;
m_info("ready to xfer\n");
notify_xferready(priv);
}
altmdm_pm_notify_reset(priv);
break;
case MODE_TRXRESET:
if (!spidev->is_xferready)
{
spidev->is_xferready = true;
m_info("ready to xfer\n");
notify_xferready(priv);
}
altmdm_pm_notify_reset(priv);
if (spidev->tx_param.is_bufful)
{
spidev->tx_param.is_bufful = 0;
spidev->tx_param.result = (ret < 0) ? ret : TRANS_OK_RCVBUFFUL;
}
else
{
spidev->tx_param.result = (ret < 0) ? ret : TRANS_OK;
}
altmdm_sys_setflag(&spidev->tx_param.done_flag, EVENT_TX_DONE);
break;
case MODE_RXDATANOBUFF:
/* Yield the CPU so that the upper layer can execute
* the receiving process.
*/
nxsig_usleep(YIELD_TASK_NOBUFF);
break;
case MODE_TRXHEADERFAILRXREQ:
case MODE_RXINVALID:
break;
default:
break;
}
}
/****************************************************************************
* Name: done_sleep
*
* Description:
* Notify that sleep request has completed.
*
****************************************************************************/
static void done_sleep(FAR struct altmdm_dev_s *priv, int ret)
{
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
spidev->sleep_param.result = ret;
altmdm_sys_setflag(&spidev->sleep_param.done_flag, EVENT_SLEEP_DONE);
}
/****************************************************************************
* Name: xfer_task_init
*
* Description:
* Initialize SPI transfer task.
*
****************************************************************************/
static void xfer_task_init(FAR struct altmdm_dev_s *priv)
{
sigset_t mask;
sigfillset(&mask);
nxsig_procmask(SIG_SETMASK, &mask, NULL);
init_svtimer(priv);
}
/****************************************************************************
* Name: xfer_task
*
* Description:
* ALTMDM SPI transfer task.
*
****************************************************************************/
static int xfer_task(int argc, char *argv[])
{
int ret;
int sleep_result;
int res_code;
uint32_t is_txreq;
uint32_t is_rxreq;
uint32_t is_sleepreq;
uint32_t is_timerexp;
uint32_t do_sleep;
uint32_t ptn;
uint32_t xfer_mode;
uint32_t modem_state;
uint32_t is_rcvrready = 0;
FAR struct altmdm_dev_s *priv = g_privdata;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
xfer_task_init(priv);
while (!spidev->is_not_run)
{
ret = altmdm_sys_waitflag(&spidev->xfer_flag, EVENT_TRANS_WAIT,
ALTMDM_SYS_FLAG_WMODEOR, &ptn,
ALTMDM_SYS_FLAG_TMOFEVR);
if (ret != 0)
{
m_err("wait flag failed:%d.\n", ret);
continue;
}
m_info("ptn:%x.\n", ptn);
if (ptn & EVENT_REQMASK)
{
is_txreq = ptn & EVENT_TXREQ;
is_rxreq = ptn & EVENT_RXREQ;
is_sleepreq = ptn & EVENT_SLEEPREQ;
is_timerexp = ptn & EVENT_SV_TIMER_EXP;
do_sleep = 0;
sleep_result = SLEEP_NG;
/* Sleep transition event received. Check if it can sleep. */
if (is_sleepreq || is_timerexp)
{
/* If data transfer required at the same time, cannot sleep. */
if (!(is_txreq || is_rxreq))
{
if (altmdm_pm_cansleep(priv))
{
do_sleep = 1;
}
else if (is_timerexp)
{
/* Case where modem spontaneously enters sleep state
* and timer is not stopped.
*/
modem_state = altmdm_pm_getinternalstate();
if (modem_state == MODEM_PM_INTERNAL_STATE_SLEEP)
{
stop_svtimer(priv);
}
}
}
}
if (do_sleep)
{
stop_svtimer(priv);
/* Transfer sleep packet */
sleep_result = do_xfersleep(priv, 0);
if (sleep_result == SLEEP_OK)
{
altmdm_pm_sleepmodem(priv);
}
}
if (is_sleepreq)
{
/* Send sleep response */
done_sleep(priv, sleep_result);
}
/* Receive data transfer request */
if (is_txreq || is_rxreq)
{
stop_svtimer(priv);
/* Wakeup modem before data transfer */
if (is_rxreq)
{
res_code = altmdm_pm_wakeup(priv, NULL);
}
else
{
res_code = altmdm_pm_wakeup(priv, wait_receiverready);
}
if (res_code == MODEM_PM_WAKEUP_FAIL)
{
done_xfer(priv, MODE_TXDATA, TRANS_WAITRCVRTMO);
start_svtimer(priv);
continue;
}
else if (res_code == MODEM_PM_WAKEUP_DONE)
{
is_rcvrready = 1;
}
/* transfer header */
ret = do_xferheader(priv, is_rxreq, is_txreq, 0, is_rcvrready);
if (is_rcvrready)
{
is_rcvrready = 0;
}
xfer_mode = decide_xfermode(priv, is_rxreq, is_txreq, ret);
switch (xfer_mode)
{
case MODE_RXDATA:
ret = do_receivedata(priv);
break;
case MODE_TXDATA:
ret = do_senddata(priv);
break;
case MODE_TRXDATA:
ret = do_trxdata(priv);
break;
case MODE_RXDATANOBUFF:
ret = do_receivedata_nobuff(priv);
break;
case MODE_TRXDATANOBUFF:
ret = do_trxdata_norxbuff(priv);
break;
case MODE_RXRESET:
ret = do_receivereset(priv);
break;
case MODE_TRXRESET:
ret = do_trxreset(priv);
break;
case MODE_RXINVALID:
ret = TRANS_RXINVALID;
break;
case MODE_TRXHEADERFAILTXREQ:
case MODE_TRXHEADERFAILRXREQ:
break;
default:
m_err("ERR:%04d Unknown decision of transfer: %d.\n",
__LINE__, xfer_mode);
break;
}
if (is_txreq)
{
DEBUGASSERT(priv->lower);
priv->lower->master_request(false);
}
m_info("m=%d\n", xfer_mode);
done_xfer(priv, xfer_mode, ret);
start_svtimer(priv);
}
}
if (ptn & EVENT_EXIT)
{
spidev->is_not_run = true;
}
}
delete_svtimer(priv);
task_delete(0);
return 0;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: altmdm_spi_gpioreadyisr
*
* Description:
* Interrupt handler for SLAVE_REQUEST GPIO line.
*
****************************************************************************/
int altmdm_spi_gpioreadyisr(int irq, FAR void *context, FAR void *arg)
{
FAR struct altmdm_dev_s *priv = g_privdata;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
altmdm_sys_setflag(&spidev->xfer_flag, EVENT_RXREQ);
return 0;
}
/****************************************************************************
* Name: altmdm_spi_init
*
* Description:
* Initialize ALTMDM driver.
*
****************************************************************************/
int altmdm_spi_init(FAR struct altmdm_dev_s *priv)
{
int ret = 0;
g_privdata = priv;
/* Initialize modem power management driver */
altmdm_pm_init(priv);
memset(&priv->spidev, 0, sizeof(struct altmdm_spi_dev_s));
priv->spidev.is_not_run = false;
priv->spidev.is_xferready = false;
altmdm_sys_initlock(&priv->spidev.tx_param.lock);
altmdm_sys_initlock(&priv->spidev.rx_param.lock);
altmdm_sys_initlock(&priv->spidev.sleep_param.lock);
altmdm_sys_initflag(&priv->spidev.xfer_flag);
altmdm_sys_initflag(&priv->spidev.xferready_flag);
altmdm_sys_initflag(&priv->spidev.tx_param.done_flag);
altmdm_sys_initflag(&priv->spidev.sleep_param.done_flag);
create_rxbufffifo(priv);
DEBUGASSERT(priv->lower);
/* SPI settings */
SPI_LOCK(priv->spi, true);
SPI_SETMODE(priv->spi, SPIDEV_MODE0);
SPI_SETBITS(priv->spi, 8);
SPI_SETFREQUENCY(priv->spi, priv->lower->spi_maxfreq());
SPI_LOCK(priv->spi, false);
priv->lower->sready_irqattach(true, altmdm_spi_gpioreadyisr);
priv->spidev.task_id = task_create(XFER_TASK_NAME, XFER_TASK_PRI,
XFER_TASK_STKSIZE, xfer_task, NULL);
if (priv->spidev.task_id == ERROR)
{
m_err("Failed to create xfer task\n");
}
return ret;
}
/****************************************************************************
* Name: altmdm_spi_uninit
*
* Description:
* Uninitialize ALTMDM driver.
*
****************************************************************************/
int altmdm_spi_uninit(FAR struct altmdm_dev_s *priv)
{
altmdm_sys_setflag(&priv->spidev.xfer_flag, EVENT_EXIT);
/* check transfer task is deleted or not */
while (1)
{
if (priv->spidev.is_not_run)
{
break;
}
nxsig_usleep(10);
}
altmdm_sys_deletelock(&priv->spidev.tx_param.lock);
altmdm_sys_deletelock(&priv->spidev.rx_param.lock);
altmdm_sys_deletelock(&priv->spidev.sleep_param.lock);
altmdm_sys_deleteflag(&priv->spidev.xfer_flag);
altmdm_sys_deleteflag(&priv->spidev.tx_param.done_flag);
altmdm_sys_deleteflag(&priv->spidev.sleep_param.done_flag);
if (priv->spidev.rx_param.rxbuff != NULL)
{
free_rxbuffer(priv, priv->spidev.rx_param.rxbuff);
priv->spidev.rx_param.rxbuff = NULL;
}
destroy_rxbufffifo(priv);
DEBUGASSERT(priv->lower);
priv->lower->sready_irqattach(false, NULL);
/* Uninitialize modem power management driver */
altmdm_pm_uninit(priv);
return 0;
}
/****************************************************************************
* Name: altmdm_spi_enable
*
* Description:
* Enable ALTMDM SPI driver.
*
****************************************************************************/
int altmdm_spi_enable(FAR struct altmdm_dev_s *priv)
{
DEBUGASSERT(priv && priv->lower);
priv->lower->sready_irqenable(true);
return 0;
}
/****************************************************************************
* Name: altmdm_spi_disable
*
* Description:
* Disable ALTMDM SPI driver.
*
****************************************************************************/
int altmdm_spi_disable(FAR struct altmdm_dev_s *priv)
{
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
DEBUGASSERT(priv->lower);
priv->lower->sready_irqenable(false);
spidev->is_xferready = false;
return 0;
}
/****************************************************************************
* Name: altmdm_spi_read
*
* Description:
* ALTMDM SPI driver read method.
*
****************************************************************************/
ssize_t altmdm_spi_read(FAR struct altmdm_dev_s * priv,
FAR const char *buffer, size_t readlen)
{
FAR struct altmdm_spi_dev_s *spidev;
FAR struct altmdm_spi_rxbuff_s *rbuff;
ssize_t rsize = readlen;
/* Check argument */
if ((priv == NULL) || (buffer == NULL))
{
return -EINVAL;
}
if (!readlen || readlen > MAX_PKT_SIZE)
{
m_err("Invalid read length:%d.\n", readlen);
return -EINVAL;
}
spidev = &priv->spidev;
altmdm_sys_lock(&spidev->rx_param.lock);
get_rxbufffifo(priv, &rbuff);
if (spidev->rx_param.rxabort)
{
spidev->rx_param.rxabort = false;
if (rbuff != NULL)
{
m_info("rx buffer discard because of abort.%d\n", __LINE__);
free_rxbuffer(priv, rbuff);
}
rsize = -ECONNABORTED;
}
else
{
if (rbuff == NULL)
{
m_err("get rx buffer failed.\n");
rsize = -EIO;
}
else if (rbuff->rx_size > readlen)
{
m_info("get rx buffer.%d\n", __LINE__);
rsize = readlen;
memcpy((void *)buffer, rbuff->buff_addr, rsize);
free_rxbuffer(priv, rbuff);
}
else
{
m_info("get rx buffer.%d\n", __LINE__);
rsize = rbuff->rx_size;
memcpy((void *)buffer, rbuff->buff_addr, rsize);
free_rxbuffer(priv, rbuff);
}
}
altmdm_sys_unlock(&spidev->rx_param.lock);
return rsize;
}
/****************************************************************************
* Name: altmdm_spi_write
*
* Description:
* ALTMDM SPI driver write method.
*
****************************************************************************/
ssize_t altmdm_spi_write(FAR struct altmdm_dev_s * priv,
FAR const char *buffer, size_t witelen)
{
int ret;
int remainder;
uint32_t ptn;
FAR struct altmdm_spi_dev_s *spidev;
ssize_t wsize = witelen;
/* Check argument */
if ((priv == NULL) || (buffer == NULL))
{
return -EINVAL;
}
if (!witelen || witelen > MAX_PKT_SIZE)
{
m_err("Invalid write length:%d.\n", witelen);
return -EINVAL;
}
spidev = &priv->spidev;
if (!spidev->is_xferready)
{
wait_xferready(priv);
}
altmdm_sys_lock(&spidev->tx_param.lock);
again:
spidev->tx_param.buff_addr = (void *)buffer;
spidev->tx_param.actual_size = witelen;
remainder = witelen % UNIT_SIZE;
if (remainder == 0)
{
spidev->tx_param.total_size = spidev->tx_param.actual_size;
}
else
{
spidev->tx_param.total_size =
((spidev->tx_param.actual_size / UNIT_SIZE) + 1) * UNIT_SIZE;
}
spidev->tx_param.result = 0;
altmdm_sys_setflag(&spidev->xfer_flag, EVENT_TXREQ);
ret = altmdm_sys_waitflag(&spidev->tx_param.done_flag,
EVENT_TX_DONE,
ALTMDM_SYS_FLAG_WMODEOR,
&ptn,
WRITE_WAIT_TIMEOUT);
if (ret != OK)
{
m_err("wait failed:%d\n", ret);
wsize = -ETIME;
}
else
{
switch (spidev->tx_param.result)
{
case TRANS_OK:
case TRANS_OK_TRXDATANORXBUFF:
wsize = witelen;
break;
case TRANS_RXINVALID:
case TRANS_WAITRCVRTMO:
wsize = -EIO;
break;
case TRANS_OK_RCVBUFFUL:
nxsig_usleep(100);
goto again;
break;
default:
m_err("Unexpected situation. tx result = %d.\n",
spidev->tx_param.result);
wsize = -EIO;
break;
}
m_info("%s: tx result: %d.\n", __func__, spidev->tx_param.result);
m_info("%s: write size: %d.\n", __func__, wsize);
}
altmdm_sys_unlock(&spidev->tx_param.lock);
return wsize;
}
/****************************************************************************
* Name: spicom_read_abort
*
* Description:
* Abort the read process.
*
****************************************************************************/
int altmdm_spi_readabort(FAR struct altmdm_dev_s *priv)
{
/* Check argument */
if (priv == NULL)
{
return -EINVAL;
}
abort_get_rxbufffifo(priv);
return OK;
}
/****************************************************************************
* Name: altmdm_spi_sleepmodem
*
* Description:
* Make ALTMDM sleep.
*
****************************************************************************/
int altmdm_spi_sleepmodem(FAR struct altmdm_dev_s *priv)
{
int ret;
bool sleep_requested;
uint32_t ptn;
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
altmdm_sys_lock(&spidev->sleep_param.lock);
sleep_requested = spidev->sleep_param.requested;
if (!sleep_requested)
{
spidev->sleep_param.requested = true;
}
altmdm_sys_unlock(&spidev->sleep_param.lock);
if (sleep_requested)
{
ret = -EBUSY;
}
else
{
spidev->sleep_param.result = 0;
altmdm_sys_setflag(&spidev->xfer_flag, EVENT_SLEEPREQ);
ret = altmdm_sys_waitflag(&spidev->sleep_param.done_flag,
EVENT_SLEEP_DONE, ALTMDM_SYS_FLAG_WMODEOR,
&ptn, SREQ_WAIT_TIMEOUT);
if (ret != OK)
{
m_err("wait failed:%d\n", ret);
}
else
{
ret = spidev->sleep_param.result;
m_info("%s: sleep result: %d.\n", __func__,
spidev->sleep_param.result);
}
spidev->sleep_param.requested = false;
}
return ret;
}
/****************************************************************************
* Name: altmdm_spi_setreceiverready
*
* Description:
* Set receiver ready notification.
*
****************************************************************************/
int altmdm_spi_setreceiverready(FAR struct altmdm_dev_s *priv)
{
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
altmdm_sys_setflag(&spidev->xfer_flag, EVENT_RXREQ);
return 0;
}
/****************************************************************************
* Name: altmdm_spi_isreceiverready
*
* Description:
* Check already notified or not by altmdm_spi_setreceiverready.
*
****************************************************************************/
int altmdm_spi_isreceiverready(FAR struct altmdm_dev_s *priv)
{
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
struct altmdm_sys_flagstate_s flag_status;
altmdm_sys_referflag(&spidev->xfer_flag, &flag_status);
if (flag_status.flag_pattern & EVENT_RXREQ)
{
return 1;
}
return 0;
}
/****************************************************************************
* Name: altmdm_spi_clearreceiverready
*
* Description:
* Clear receiver ready notification.
*
****************************************************************************/
int altmdm_spi_clearreceiverready(FAR struct altmdm_dev_s *priv)
{
FAR struct altmdm_spi_dev_s *spidev = &priv->spidev;
altmdm_sys_clearflag(&spidev->xfer_flag, EVENT_RXREQ);
return 0;
}
#endif /* CONFIG_MODEM_ALTMDM */
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