This breaks on RISC-V, because dma_pool_alloc returns addresses which
are not in the linear map. Instead, plumb through the physical address
which is already known anyway.
Acked-by: Maxime Ripard <maxime@xxxxxxxxxx>
Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx>
---
Changes in v3:
- Fix format warnings
drivers/dma/sun6i-dma.c | 38 +++++++++++++++++++-------------------
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c
index 5cadd4d2b824..4436fbd70445 100644
--- a/drivers/dma/sun6i-dma.c
+++ b/drivers/dma/sun6i-dma.c
@@ -241,9 +241,7 @@ static inline void sun6i_dma_dump_com_regs(struct sun6i_dma_dev *sdev)
static inline void sun6i_dma_dump_chan_regs(struct sun6i_dma_dev *sdev,
struct sun6i_pchan *pchan)
{
- phys_addr_t reg = virt_to_phys(pchan->base);
-
- dev_dbg(sdev->slave.dev, "Chan %d reg: %pa\n"
+ dev_dbg(sdev->slave.dev, "Chan %d reg:\n"
"\t___en(%04x): \t0x%08x\n"
"\tpause(%04x): \t0x%08x\n"
"\tstart(%04x): \t0x%08x\n"
@@ -252,7 +250,7 @@ static inline void sun6i_dma_dump_chan_regs(struct sun6i_dma_dev *sdev,
"\t__dst(%04x): \t0x%08x\n"
"\tcount(%04x): \t0x%08x\n"
"\t_para(%04x): \t0x%08x\n\n",
- pchan->idx, ®,
+ pchan->idx,
DMA_CHAN_ENABLE,
readl(pchan->base + DMA_CHAN_ENABLE),
DMA_CHAN_PAUSE,
@@ -385,17 +383,16 @@ static void *sun6i_dma_lli_add(struct sun6i_dma_lli *prev,
}
static inline void sun6i_dma_dump_lli(struct sun6i_vchan *vchan,
- struct sun6i_dma_lli *lli)
+ struct sun6i_dma_lli *v_lli,
+ dma_addr_t p_lli)
{
- phys_addr_t p_lli = virt_to_phys(lli);
-
dev_dbg(chan2dev(&vchan->vc.chan),
- "\n\tdesc: p - %pa v - 0x%p\n"
+ "\n\tdesc:\tp - %pad v - 0x%p\n"
"\t\tc - 0x%08x s - 0x%08x d - 0x%08x\n"
"\t\tl - 0x%08x p - 0x%08x n - 0x%08x\n",
- &p_lli, lli,
- lli->cfg, lli->src, lli->dst,
- lli->len, lli->para, lli->p_lli_next);
+ &p_lli, v_lli,
+ v_lli->cfg, v_lli->src, v_lli->dst,
+ v_lli->len, v_lli->para, v_lli->p_lli_next);
}
static void sun6i_dma_free_desc(struct virt_dma_desc *vd)
@@ -445,7 +442,7 @@ static int sun6i_dma_start_desc(struct sun6i_vchan *vchan)
pchan->desc = to_sun6i_desc(&desc->tx);
pchan->done = NULL;
- sun6i_dma_dump_lli(vchan, pchan->desc->v_lli);
+ sun6i_dma_dump_lli(vchan, pchan->desc->v_lli, pchan->desc->p_lli);
irq_reg = pchan->idx / DMA_IRQ_CHAN_NR;
irq_offset = pchan->idx % DMA_IRQ_CHAN_NR;
@@ -670,7 +667,7 @@ static struct dma_async_tx_descriptor *sun6i_dma_prep_dma_memcpy(
sun6i_dma_lli_add(NULL, v_lli, p_lli, txd);
- sun6i_dma_dump_lli(vchan, v_lli);
+ sun6i_dma_dump_lli(vchan, v_lli, p_lli);
return vchan_tx_prep(&vchan->vc, &txd->vd, flags);
@@ -746,14 +743,16 @@ static struct dma_async_tx_descriptor *sun6i_dma_prep_slave_sg(
}
dev_dbg(chan2dev(chan), "First: %pad\n", &txd->p_lli);
- for (prev = txd->v_lli; prev; prev = prev->v_lli_next)
- sun6i_dma_dump_lli(vchan, prev);
+ for (p_lli = txd->p_lli, v_lli = txd->v_lli; v_lli;
+ p_lli = v_lli->p_lli_next, v_lli = v_lli->v_lli_next)
+ sun6i_dma_dump_lli(vchan, v_lli, p_lli);
return vchan_tx_prep(&vchan->vc, &txd->vd, flags);
err_lli_free:
- for (prev = txd->v_lli; prev; prev = prev->v_lli_next)
- dma_pool_free(sdev->pool, prev, virt_to_phys(prev));
+ for (p_lli = txd->p_lli, v_lli = txd->v_lli; v_lli;
+ p_lli = v_lli->p_lli_next, v_lli = v_lli->v_lli_next)
+ dma_pool_free(sdev->pool, v_lli, p_lli);
kfree(txd);
return NULL;
}
@@ -820,8 +819,9 @@ static struct dma_async_tx_descriptor *sun6i_dma_prep_dma_cyclic(
return vchan_tx_prep(&vchan->vc, &txd->vd, flags);
err_lli_free:
- for (prev = txd->v_lli; prev; prev = prev->v_lli_next)
- dma_pool_free(sdev->pool, prev, virt_to_phys(prev));
+ for (p_lli = txd->p_lli, v_lli = txd->v_lli; v_lli;
+ p_lli = v_lli->p_lli_next, v_lli = v_lli->v_lli_next)
+ dma_pool_free(sdev->pool, v_lli, p_lli);
kfree(txd);
return NULL;
}
--
2.35.1
