This patch support basic DMA operations which includes
device capability and channel setup.
Signed-off-by: Gagandeep Singh <g.si...@nxp.com>
---
drivers/dma/dpaa/dpaa_qdma.c | 182 +++++++++++++++++++++++++++++++++++
drivers/dma/dpaa/dpaa_qdma.h | 6 ++
2 files changed, 188 insertions(+)
diff --git a/drivers/dma/dpaa/dpaa_qdma.c b/drivers/dma/dpaa/dpaa_qdma.c
index 8b0454abce..0297166550 100644
--- a/drivers/dma/dpaa/dpaa_qdma.c
+++ b/drivers/dma/dpaa/dpaa_qdma.c
@@ -8,6 +8,18 @@
#include "dpaa_qdma.h"
#include "dpaa_qdma_logs.h"
+static inline void
+qdma_desc_addr_set64(struct fsl_qdma_format *ccdf, u64 addr)
+{
+ ccdf->addr_hi = upper_32_bits(addr);
+ ccdf->addr_lo = rte_cpu_to_le_32(lower_32_bits(addr));
+}
+
+static inline void qdma_csgf_set_len(struct fsl_qdma_format *csgf, int len)
+{
+ csgf->cfg = rte_cpu_to_le_32(len & QDMA_SG_LEN_MASK);
+}
+
static inline int ilog2(int x)
{
int log = 0;
@@ -84,6 +96,64 @@ static void fsl_qdma_free_chan_resources(struct
fsl_qdma_chan *fsl_chan)
finally:
fsl_qdma->desc_allocated--;
}
+
+/*
+ * Pre-request command descriptor and compound S/G for enqueue.
+ */
+static int fsl_qdma_pre_request_enqueue_comp_sd_desc(
+ struct fsl_qdma_queue *queue,
+ int size, int aligned)
+{
+ struct fsl_qdma_comp *comp_temp;
+ struct fsl_qdma_sdf *sdf;
+ struct fsl_qdma_ddf *ddf;
+ struct fsl_qdma_format *csgf_desc;
+ int i;
+
+ for (i = 0; i < (int)(queue->n_cq + COMMAND_QUEUE_OVERFLLOW); i++) {
+ comp_temp = rte_zmalloc("qdma: comp temp",
+ sizeof(*comp_temp), 0);
+ if (!comp_temp)
+ return -ENOMEM;
+
+ comp_temp->virt_addr =
+ dma_pool_alloc(size, aligned, &comp_temp->bus_addr);
+ if (!comp_temp->virt_addr) {
+ rte_free(comp_temp);
+ return -ENOMEM;
+ }
+
+ comp_temp->desc_virt_addr =
+ dma_pool_alloc(size, aligned, &comp_temp->desc_bus_addr);
+ if (!comp_temp->desc_virt_addr)
+ return -ENOMEM;
+
+ memset(comp_temp->virt_addr, 0, FSL_QDMA_COMMAND_BUFFER_SIZE);
+ memset(comp_temp->desc_virt_addr, 0,
+ FSL_QDMA_DESCRIPTOR_BUFFER_SIZE);
+
+ csgf_desc = (struct fsl_qdma_format *)comp_temp->virt_addr + 1;
+ sdf = (struct fsl_qdma_sdf *)comp_temp->desc_virt_addr;
+ ddf = (struct fsl_qdma_ddf *)comp_temp->desc_virt_addr + 1;
+ /* Compound Command Descriptor(Frame List Table) */
+ qdma_desc_addr_set64(csgf_desc, comp_temp->desc_bus_addr);
+ /* It must be 32 as Compound S/G Descriptor */
+ qdma_csgf_set_len(csgf_desc, 32);
+ /* Descriptor Buffer */
+ sdf->cmd = rte_cpu_to_le_32(FSL_QDMA_CMD_RWTTYPE <<
+ FSL_QDMA_CMD_RWTTYPE_OFFSET);
+ ddf->cmd = rte_cpu_to_le_32(FSL_QDMA_CMD_RWTTYPE <<
+ FSL_QDMA_CMD_RWTTYPE_OFFSET);
+ ddf->cmd |= rte_cpu_to_le_32(FSL_QDMA_CMD_LWC <<
+ FSL_QDMA_CMD_LWC_OFFSET);
+
+ list_add_tail(&comp_temp->list, &queue->comp_free);
+ }
+
+ return 0;
+}
+
+
static struct fsl_qdma_queue
*fsl_qdma_alloc_queue_resources(struct fsl_qdma_engine *fsl_qdma)
{
@@ -311,6 +381,79 @@ static int fsl_qdma_reg_init(struct fsl_qdma_engine
*fsl_qdma)
return 0;
}
+static int fsl_qdma_alloc_chan_resources(struct fsl_qdma_chan *fsl_chan)
+{
+ struct fsl_qdma_queue *fsl_queue = fsl_chan->queue;
+ struct fsl_qdma_engine *fsl_qdma = fsl_chan->qdma;
+ int ret;
+
+ if (fsl_queue->count++)
+ goto finally;
+
+ INIT_LIST_HEAD(&fsl_queue->comp_free);
+ INIT_LIST_HEAD(&fsl_queue->comp_used);
+
+ ret = fsl_qdma_pre_request_enqueue_comp_sd_desc(fsl_queue,
+ FSL_QDMA_COMMAND_BUFFER_SIZE, 64);
+ if (ret) {
+ DPAA_QDMA_ERR(
+ "failed to alloc dma buffer for comp descriptor\n");
+ goto exit;
+ }
+
+finally:
+ return fsl_qdma->desc_allocated++;
+
+exit:
+ return -ENOMEM;
+}
+
+static int
+dpaa_info_get(const struct rte_dmadev *dev, struct rte_dmadev_info *dev_info,
+ uint32_t info_sz)
+{
+#define DPAADMA_MAX_DESC 128
+#define DPAADMA_MIN_DESC 128
+
+ RTE_SET_USED(dev);
+ RTE_SET_USED(info_sz);
+
+ dev_info->dev_capa = RTE_DMADEV_CAPA_MEM_TO_MEM |
+ RTE_DMADEV_CAPA_MEM_TO_DEV |
+ RTE_DMADEV_CAPA_DEV_TO_DEV |
+ RTE_DMADEV_CAPA_DEV_TO_MEM |
+ RTE_DMADEV_CAPA_SILENT |
+ RTE_DMADEV_CAPA_OPS_COPY;
+ dev_info->max_vchans = 1;
+ dev_info->max_desc = DPAADMA_MAX_DESC;
+ dev_info->min_desc = DPAADMA_MIN_DESC;
+
+ return 0;
+}
+
+static int
+dpaa_get_channel(struct fsl_qdma_engine *fsl_qdma, uint16_t vchan)
+{
+ u32 i, start, end;
+
+ start = fsl_qdma->free_block_id * QDMA_QUEUES;
+ fsl_qdma->free_block_id++;
+
+ end = start + 1;
+ for (i = start; i < end; i++) {
+ struct fsl_qdma_chan *fsl_chan = &fsl_qdma->chans[i];
+
+ if (fsl_chan->free) {
+ fsl_chan->free = false;
+ fsl_qdma_alloc_chan_resources(fsl_chan);
+ fsl_qdma->vchan_map[vchan] = i;
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
static void
dma_release(void *fsl_chan)
{
@@ -318,6 +461,43 @@ dma_release(void *fsl_chan)
fsl_qdma_free_chan_resources((struct fsl_qdma_chan *)fsl_chan);
}
+static int
+dpaa_qdma_configure(__rte_unused struct rte_dmadev *dmadev,
+ __rte_unused const struct rte_dmadev_conf *dev_conf)
+{
+ return 0;
+}
+
+static int
+dpaa_qdma_start(__rte_unused struct rte_dmadev *dev)
+{
+ return 0;
+}
+
+static int
+dpaa_qdma_close(__rte_unused struct rte_dmadev *dev)
+{
+ return 0;
+}
+
+static int
+dpaa_qdma_queue_setup(struct rte_dmadev *dmadev,
+ uint16_t vchan,
+ __rte_unused const struct rte_dmadev_vchan_conf *conf)
+{
+ struct fsl_qdma_engine *fsl_qdma = dmadev->dev_private;
+
+ return dpaa_get_channel(fsl_qdma, vchan);
+}
+
+static struct rte_dmadev_ops dpaa_qdma_ops = {
+ .dev_info_get = dpaa_info_get,
+ .dev_configure = dpaa_qdma_configure,
+ .dev_start = dpaa_qdma_start,
+ .dev_close = dpaa_qdma_close,
+ .vchan_setup = dpaa_qdma_queue_setup,
+};
+
static int
dpaa_qdma_init(struct rte_dmadev *dmadev)
{
@@ -430,6 +610,8 @@ dpaa_qdma_probe(__rte_unused struct rte_dpaa_driver
*dpaa_drv,
}
dpaa_dev->dmadev = dmadev;
+ dmadev->dev_ops = &dpaa_qdma_ops;
+ dmadev->device = &dpaa_dev->device;
/* Invoke PMD device initialization function */
ret = dpaa_qdma_init(dmadev);
diff --git a/drivers/dma/dpaa/dpaa_qdma.h b/drivers/dma/dpaa/dpaa_qdma.h
index cc0d1f114e..f482b16334 100644
--- a/drivers/dma/dpaa/dpaa_qdma.h
+++ b/drivers/dma/dpaa/dpaa_qdma.h
@@ -8,6 +8,12 @@
#define CORE_NUMBER 4
#define RETRIES 5
+#ifndef GENMASK
+#define BITS_PER_LONG (__SIZEOF_LONG__ * 8)
+#define GENMASK(h, l) \
+ (((~0UL) << (l)) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
+#endif
+
#define FSL_QDMA_DMR 0x0
#define FSL_QDMA_DSR 0x4
#define FSL_QDMA_DEIER 0xe00
--
2.25.1
