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soc/qman: test: Don't use dummy platform device for dma mapping

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Replace dummy platform device hack with a reference to a portal's
platform device, in order to dma map the test frame for this
small unit test.  The 2 qman symbols need to be exported because
this self test is a kernel module.

Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>
This commit is contained in:
Claudiu Manoil 2016-11-16 16:40:22 +02:00 committed by Scott Wood
parent 0fbeac3b0f
commit 021ba01066
3 changed files with 22 additions and 11 deletions
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1
drivers/soc/fsl/qbman/qman.c
View File

@ -2711,6 +2711,7 @@ const struct qm_portal_config *qman_get_qm_portal_config(
{
return portal->config;
}
EXPORT_SYMBOL(qman_get_qm_portal_config);
struct gen_pool *qm_fqalloc; /* FQID allocator */
struct gen_pool *qm_qpalloc; /* pool-channel allocator */

1
drivers/soc/fsl/qbman/qman_portal.c
View File

@ -31,6 +31,7 @@
#include "qman_priv.h"
struct qman_portal *qman_dma_portal;
EXPORT_SYMBOL(qman_dma_portal);
/* Enable portal interupts (as opposed to polling mode) */
#define CONFIG_FSL_DPA_PIRQ_SLOW 1

31
drivers/soc/fsl/qbman/qman_test_stash.c
View File

@ -191,6 +191,9 @@ static void *__frame_ptr;
static u32 *frame_ptr;
static dma_addr_t frame_dma;
/* needed for dma_map*() */
static const struct qm_portal_config *pcfg;
/* the main function waits on this */
static DECLARE_WAIT_QUEUE_HEAD(queue);
@ -210,16 +213,14 @@ static int allocate_frame_data(void)
{
u32 lfsr = HP_FIRST_WORD;
int loop;
struct platform_device *pdev = platform_device_alloc("foobar", -1);
if (!pdev) {
pr_crit("platform_device_alloc() failed");
return -EIO;
}
if (platform_device_add(pdev)) {
pr_crit("platform_device_add() failed");
if (!qman_dma_portal) {
pr_crit("portal not available\n");
return -EIO;
}
pcfg = qman_get_qm_portal_config(qman_dma_portal);
__frame_ptr = kmalloc(4 * HP_NUM_WORDS, GFP_KERNEL);
if (!__frame_ptr)
return -ENOMEM;
@ -229,15 +230,22 @@ static int allocate_frame_data(void)
frame_ptr[loop] = lfsr;
lfsr = do_lfsr(lfsr);
}
frame_dma = dma_map_single(&pdev->dev, frame_ptr, 4 * HP_NUM_WORDS,
frame_dma = dma_map_single(pcfg->dev, frame_ptr, 4 * HP_NUM_WORDS,
DMA_BIDIRECTIONAL);
platform_device_del(pdev);
platform_device_put(pdev);
if (dma_mapping_error(pcfg->dev, frame_dma)) {
pr_crit("dma mapping failure\n");
kfree(__frame_ptr);
return -EIO;
}
return 0;
}
static void deallocate_frame_data(void)
{
dma_unmap_single(pcfg->dev, frame_dma, 4 * HP_NUM_WORDS,
DMA_BIDIRECTIONAL);
kfree(__frame_ptr);
}
@ -249,7 +257,8 @@ static inline int process_frame_data(struct hp_handler *handler,
int loop;
if (qm_fd_addr_get64(fd) != handler->addr) {
pr_crit("bad frame address");
pr_crit("bad frame address, [%llX != %llX]\n",
qm_fd_addr_get64(fd), handler->addr);
return -EIO;
}
for (loop = 0; loop < HP_NUM_WORDS; loop++, p++) {