/**
* Initialize BAM DMA module
*
*/
int sps_dma_init(const struct sps_bam_props *bam_props)
{
struct sps_bam_props props;
const struct sps_bam_props *bam_reg;
u32 h;
/* Init local data */
memset(&bam_dma_dev, 0, sizeof(bam_dma_dev));
num_bams = 0;
memset(bam_handles, 0, sizeof(bam_handles));
/* Create a mutex to control access to the BAM-DMA devices */
mutex_init(&bam_dma_lock);
/* Are there any BAM DMA devices? */
if (bam_props == NULL)
return 0;
/*
* Registers all BAMs in the BSP properties, but only uses the first
* BAM-DMA device for allocations.
*/
if (bam_props->phys_addr) {
/* Force multi-EE option for all BAM-DMAs */
bam_reg = bam_props;
if ((bam_props->options & SPS_BAM_OPT_BAMDMA) &&
(bam_props->manage & SPS_BAM_MGR_MULTI_EE) == 0) {
SPS_DBG("sps:Setting multi-EE options for BAM-DMA: %x",
bam_props->phys_addr);
props = *bam_props;
props.manage |= SPS_BAM_MGR_MULTI_EE;
bam_reg = &props;
}
/* Register the BAM */
if (sps_register_bam_device(bam_reg, &h)) {
SPS_ERR("sps:Fail to register BAM-DMA BAM device: "
"phys 0x%0x", bam_props->phys_addr);
return SPS_ERROR;
}
/* Record the BAM so that it may be deregistered later */
if (num_bams < MAX_BAM_DMA_BAMS) {
bam_handles[num_bams] = h;
num_bams++;
} else {
SPS_ERR("sps:BAM-DMA: BAM limit exceeded: %d",
num_bams);
return SPS_ERROR;
}
} else {
SPS_ERR("sps:BAM-DMA phys_addr is zero.");
return SPS_ERROR;
}
return 0;
}
int sps_dma_init(const struct sps_bam_props *bam_props)
{
struct sps_bam_props props;
const struct sps_bam_props *bam_reg;
u32 h;
memset(&bam_dma_dev, 0, sizeof(bam_dma_dev));
num_bams = 0;
memset(bam_handles, 0, sizeof(bam_handles));
mutex_init(&bam_dma_lock);
if (bam_props == NULL)
return 0;
if (bam_props->phys_addr) {
bam_reg = bam_props;
if ((bam_props->options & SPS_BAM_OPT_BAMDMA) &&
(bam_props->manage & SPS_BAM_MGR_MULTI_EE) == 0) {
SPS_DBG("sps:Setting multi-EE options for BAM-DMA: %x",
bam_props->phys_addr);
props = *bam_props;
props.manage |= SPS_BAM_MGR_MULTI_EE;
bam_reg = &props;
}
if (sps_register_bam_device(bam_reg, &h)) {
SPS_ERR("sps:Fail to register BAM-DMA BAM device: "
"phys 0x%0x", bam_props->phys_addr);
return SPS_ERROR;
}
if (num_bams < MAX_BAM_DMA_BAMS) {
bam_handles[num_bams] = h;
num_bams++;
} else {
SPS_ERR("sps:BAM-DMA: BAM limit exceeded: %d",
num_bams);
return SPS_ERROR;
}
} else {
SPS_ERR("sps:BAM-DMA phys_addr is zero.");
return SPS_ERROR;
}
return 0;
}
static void bam_init(struct work_struct *work)
{
u32 h;
dma_addr_t dma_addr;
int ret;
void *a2_virt_addr;
/* init BAM */
a2_virt_addr = ioremap_nocache(A2_PHYS_BASE, A2_PHYS_SIZE);
if (!a2_virt_addr) {
pr_err("%s: ioremap failed\n", __func__);
ret = -ENOMEM;
goto register_bam_failed;
}
a2_props.phys_addr = A2_PHYS_BASE;
a2_props.virt_addr = a2_virt_addr;
a2_props.virt_size = A2_PHYS_SIZE;
a2_props.irq = A2_BAM_IRQ;
a2_props.num_pipes = A2_NUM_PIPES;
a2_props.summing_threshold = A2_SUMMING_THRESHOLD;
/* need to free on tear down */
ret = sps_register_bam_device(&a2_props, &h);
if (ret < 0) {
pr_err("%s: register bam error %d\n", __func__, ret);
goto register_bam_failed;
}
bam_tx_pipe = sps_alloc_endpoint();
if (bam_tx_pipe == NULL) {
pr_err("%s: tx alloc endpoint failed\n", __func__);
ret = -ENOMEM;
goto register_bam_failed;
}
ret = sps_get_config(bam_tx_pipe, &tx_connection);
if (ret) {
pr_err("%s: tx get config failed %d\n", __func__, ret);
goto tx_get_config_failed;
}
tx_connection.source = SPS_DEV_HANDLE_MEM;
tx_connection.src_pipe_index = 0;
tx_connection.destination = h;
tx_connection.dest_pipe_index = 4;
tx_connection.mode = SPS_MODE_DEST;
tx_connection.options = SPS_O_AUTO_ENABLE | SPS_O_EOT |
SPS_O_ACK_TRANSFERS;
tx_desc_mem_buf.size = 0x800; /* 2k */
tx_desc_mem_buf.base = dma_alloc_coherent(NULL, tx_desc_mem_buf.size,
&dma_addr, 0);
if (tx_desc_mem_buf.base == NULL) {
pr_err("%s: tx memory alloc failed\n", __func__);
ret = -ENOMEM;
goto tx_mem_failed;
}
tx_desc_mem_buf.phys_base = dma_addr;
memset(tx_desc_mem_buf.base, 0x0, tx_desc_mem_buf.size);
tx_connection.desc = tx_desc_mem_buf;
tx_connection.event_thresh = 0x10;
ret = sps_connect(bam_tx_pipe, &tx_connection);
if (ret < 0) {
pr_err("%s: tx connect error %d\n", __func__, ret);
goto tx_connect_failed;
}
bam_rx_pipe = sps_alloc_endpoint();
if (bam_rx_pipe == NULL) {
pr_err("%s: rx alloc endpoint failed\n", __func__);
ret = -ENOMEM;
goto tx_connect_failed;
}
ret = sps_get_config(bam_rx_pipe, &rx_connection);
if (ret) {
pr_err("%s: rx get config failed %d\n", __func__, ret);
goto rx_get_config_failed;
}
rx_connection.source = h;
rx_connection.src_pipe_index = 5;
rx_connection.destination = SPS_DEV_HANDLE_MEM;
rx_connection.dest_pipe_index = 1;
rx_connection.mode = SPS_MODE_SRC;
rx_connection.options = SPS_O_AUTO_ENABLE | SPS_O_EOT |
SPS_O_ACK_TRANSFERS;
rx_desc_mem_buf.size = 0x800; /* 2k */
rx_desc_mem_buf.base = dma_alloc_coherent(NULL, rx_desc_mem_buf.size,
&dma_addr, 0);
if (rx_desc_mem_buf.base == NULL) {
pr_err("%s: rx memory alloc failed\n", __func__);
ret = -ENOMEM;
goto rx_mem_failed;
}
rx_desc_mem_buf.phys_base = dma_addr;
memset(rx_desc_mem_buf.base, 0x0, rx_desc_mem_buf.size);
rx_connection.desc = rx_desc_mem_buf;
rx_connection.event_thresh = 0x10;
ret = sps_connect(bam_rx_pipe, &rx_connection);
if (ret < 0) {
pr_err("%s: rx connect error %d\n", __func__, ret);
goto rx_connect_failed;
}
tx_register_event.options = SPS_O_EOT;
tx_register_event.mode = SPS_TRIGGER_CALLBACK;
tx_register_event.xfer_done = NULL;
tx_register_event.callback = bam_mux_tx_notify;
tx_register_event.user = NULL;
ret = sps_register_event(bam_tx_pipe, &tx_register_event);
if (ret < 0) {
pr_err("%s: tx register event error %d\n", __func__, ret);
goto rx_event_reg_failed;
}
rx_register_event.options = SPS_O_EOT;
rx_register_event.mode = SPS_TRIGGER_CALLBACK;
rx_register_event.xfer_done = NULL;
rx_register_event.callback = bam_mux_rx_notify;
rx_register_event.user = NULL;
ret = sps_register_event(bam_rx_pipe, &rx_register_event);
if (ret < 0) {
pr_err("%s: tx register event error %d\n", __func__, ret);
goto rx_event_reg_failed;
}
bam_mux_initialized = 1;
queue_rx();
return;
rx_event_reg_failed:
sps_disconnect(bam_rx_pipe);
rx_connect_failed:
dma_free_coherent(NULL, rx_desc_mem_buf.size, rx_desc_mem_buf.base,
rx_desc_mem_buf.phys_base);
rx_mem_failed:
sps_disconnect(bam_tx_pipe);
rx_get_config_failed:
sps_free_endpoint(bam_rx_pipe);
tx_connect_failed:
dma_free_coherent(NULL, tx_desc_mem_buf.size, tx_desc_mem_buf.base,
tx_desc_mem_buf.phys_base);
tx_get_config_failed:
sps_free_endpoint(bam_tx_pipe);
tx_mem_failed:
sps_deregister_bam_device(h);
register_bam_failed:
/*destroy_workqueue(bam_mux_workqueue);*/
/*return ret;*/
return;
}
int qpic_init_sps(struct platform_device *pdev,
struct qpic_sps_endpt *end_point)
{
int rc = 0;
struct sps_pipe *pipe_handle;
struct sps_connect *sps_config = &end_point->config;
struct sps_register_event *sps_event = &end_point->bam_event;
struct sps_bam_props bam = {0};
u32 bam_handle = 0;
if (qpic_res->sps_init)
return 0;
bam.phys_addr = qpic_res->qpic_phys + 0x4000;
bam.virt_addr = qpic_res->qpic_base + 0x4000;
bam.irq = qpic_res->irq - 4;
bam.manage = SPS_BAM_MGR_DEVICE_REMOTE | SPS_BAM_MGR_MULTI_EE;
rc = sps_phy2h(bam.phys_addr, &bam_handle);
if (rc)
rc = sps_register_bam_device(&bam, &bam_handle);
if (rc) {
pr_err("%s bam_handle is NULL", __func__);
rc = -ENOMEM;
goto out;
}
pipe_handle = sps_alloc_endpoint();
if (!pipe_handle) {
pr_err("sps_alloc_endpoint() failed\n");
rc = -ENOMEM;
goto out;
}
rc = sps_get_config(pipe_handle, sps_config);
if (rc) {
pr_err("sps_get_config() failed %d\n", rc);
goto free_endpoint;
}
/* WRITE CASE: source - system memory; destination - BAM */
sps_config->source = SPS_DEV_HANDLE_MEM;
sps_config->destination = bam_handle;
sps_config->mode = SPS_MODE_DEST;
sps_config->dest_pipe_index = 6;
sps_config->options = SPS_O_AUTO_ENABLE | SPS_O_EOT;
sps_config->lock_group = 0;
/*
* Descriptor FIFO is a cyclic FIFO. If 64 descriptors
* are allowed to be submitted before we get any ack for any of them,
* the descriptor FIFO size should be: (SPS_MAX_DESC_NUM + 1) *
* sizeof(struct sps_iovec).
*/
sps_config->desc.size = (64) *
sizeof(struct sps_iovec);
sps_config->desc.base = dmam_alloc_coherent(&pdev->dev,
sps_config->desc.size,
&sps_config->desc.phys_base,
GFP_KERNEL);
if (!sps_config->desc.base) {
pr_err("dmam_alloc_coherent() failed for size %x\n",
sps_config->desc.size);
rc = -ENOMEM;
goto free_endpoint;
}
memset(sps_config->desc.base, 0x00, sps_config->desc.size);
rc = sps_connect(pipe_handle, sps_config);
if (rc) {
pr_err("sps_connect() failed %d\n", rc);
goto free_endpoint;
}
init_completion(&end_point->completion);
sps_event->mode = SPS_TRIGGER_WAIT;
sps_event->options = SPS_O_EOT;
sps_event->xfer_done = &end_point->completion;
sps_event->user = (void *)qpic_res;
rc = sps_register_event(pipe_handle, sps_event);
if (rc) {
pr_err("sps_register_event() failed %d\n", rc);
goto sps_disconnect;
}
end_point->handle = pipe_handle;
qpic_res->sps_init = true;
goto out;
sps_disconnect:
sps_disconnect(pipe_handle);
free_endpoint:
sps_free_endpoint(pipe_handle);
out:
return rc;
}
