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dma: ti: k3-udma: Switch to k3_ringacc_request_rings_pair 

We only request ring pairs via K3 DMA driver, switch to use the new
k3_ringacc_request_rings_pair() to simplify the code.

As a good side effect, all boot stages now use exposed RING mode which
avoid maintaining proxy mode for 32 bit R5 core.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
This commit is contained in:
Vignesh Raghavendra 2020-07-06 13:26:27 +05:30 committed by Lokesh Vutla
parent 7be5121719
commit ddcf5318af
1 changed files with 15 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
drivers/dma/ti/k3-udma.c
View File

@ -32,12 +32,6 @@
#include "k3-udma-hwdef.h"
#include "k3-psil-priv.h"
#if BITS_PER_LONG == 64
#define RINGACC_RING_USE_PROXY (0)
#else
#define RINGACC_RING_USE_PROXY (1)
#endif
#define K3_UDMA_MAX_RFLOWS 1024
struct udma_chan;
@ -796,21 +790,14 @@ static int udma_alloc_tx_resources(struct udma_chan *uc)
if (ret)
return ret;
uc->tchan->t_ring = k3_nav_ringacc_request_ring(
ud->ringacc, uc->tchan->id,
RINGACC_RING_USE_PROXY);
if (!uc->tchan->t_ring) {
ret = k3_nav_ringacc_request_rings_pair(ud->ringacc, uc->tchan->id, -1,
&uc->tchan->t_ring,
&uc->tchan->tc_ring);
if (ret) {
ret = -EBUSY;
goto err_tx_ring;
}
uc->tchan->tc_ring = k3_nav_ringacc_request_ring(
ud->ringacc, -1, RINGACC_RING_USE_PROXY);
if (!uc->tchan->tc_ring) {
ret = -EBUSY;
goto err_txc_ring;
}
memset(&ring_cfg, 0, sizeof(ring_cfg));
ring_cfg.size = 16;
ring_cfg.elm_size = K3_NAV_RINGACC_RING_ELSIZE_8;
@ -827,7 +814,6 @@ static int udma_alloc_tx_resources(struct udma_chan *uc)
err_ringcfg:
k3_nav_ringacc_ring_free(uc->tchan->tc_ring);
uc->tchan->tc_ring = NULL;
err_txc_ring:
k3_nav_ringacc_ring_free(uc->tchan->t_ring);
uc->tchan->t_ring = NULL;
err_tx_ring:
@ -857,6 +843,7 @@ static int udma_alloc_rx_resources(struct udma_chan *uc)
{
struct k3_nav_ring_cfg ring_cfg;
struct udma_dev *ud = uc->ud;
struct udma_rflow *rflow;
int fd_ring_id;
int ret;
@ -876,40 +863,31 @@ static int udma_alloc_rx_resources(struct udma_chan *uc)
fd_ring_id = ud->tchan_cnt + ud->echan_cnt + uc->rchan->id;
uc->rflow->fd_ring = k3_nav_ringacc_request_ring(
ud->ringacc, fd_ring_id,
RINGACC_RING_USE_PROXY);
if (!uc->rflow->fd_ring) {
rflow = uc->rflow;
ret = k3_nav_ringacc_request_rings_pair(ud->ringacc, fd_ring_id, -1,
&rflow->fd_ring, &rflow->r_ring);
if (ret) {
ret = -EBUSY;
goto err_rx_ring;
}
uc->rflow->r_ring = k3_nav_ringacc_request_ring(
ud->ringacc, -1, RINGACC_RING_USE_PROXY);
if (!uc->rflow->r_ring) {
ret = -EBUSY;
goto err_rxc_ring;
}
memset(&ring_cfg, 0, sizeof(ring_cfg));
ring_cfg.size = 16;
ring_cfg.elm_size = K3_NAV_RINGACC_RING_ELSIZE_8;
ring_cfg.mode = K3_NAV_RINGACC_RING_MODE_RING;
ret = k3_nav_ringacc_ring_cfg(uc->rflow->fd_ring, &ring_cfg);
ret |= k3_nav_ringacc_ring_cfg(uc->rflow->r_ring, &ring_cfg);
ret = k3_nav_ringacc_ring_cfg(rflow->fd_ring, &ring_cfg);
ret |= k3_nav_ringacc_ring_cfg(rflow->r_ring, &ring_cfg);
if (ret)
goto err_ringcfg;
return 0;
err_ringcfg:
k3_nav_ringacc_ring_free(uc->rflow->r_ring);
uc->rflow->r_ring = NULL;
err_rxc_ring:
k3_nav_ringacc_ring_free(uc->rflow->fd_ring);
uc->rflow->fd_ring = NULL;
k3_nav_ringacc_ring_free(rflow->r_ring);
rflow->r_ring = NULL;
k3_nav_ringacc_ring_free(rflow->fd_ring);
rflow->fd_ring = NULL;
err_rx_ring:
udma_put_rflow(uc);
err_rflow: