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-rw-r--r--drivers/dma/dw-edma/dw-edma-pcie.c32
-rw-r--r--drivers/dma/dw-edma/dw-edma-v0-core.c69
-rw-r--r--include/linux/dma/edma.h5
3 files changed, 64 insertions, 42 deletions
diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c
index 3f9dadc73854..2b40f2b44f5e 100644
--- a/drivers/dma/dw-edma/dw-edma-pcie.c
+++ b/drivers/dma/dw-edma/dw-edma-pcie.c
@@ -240,20 +240,20 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev,
struct dw_edma_block *ll_block = &vsec_data.ll_wr[i];
struct dw_edma_block *dt_block = &vsec_data.dt_wr[i];
- ll_region->vaddr = pcim_iomap_table(pdev)[ll_block->bar];
- if (!ll_region->vaddr)
+ ll_region->vaddr.io = pcim_iomap_table(pdev)[ll_block->bar];
+ if (!ll_region->vaddr.io)
return -ENOMEM;
- ll_region->vaddr += ll_block->off;
+ ll_region->vaddr.io += ll_block->off;
ll_region->paddr = pci_bus_address(pdev, ll_block->bar);
ll_region->paddr += ll_block->off;
ll_region->sz = ll_block->sz;
- dt_region->vaddr = pcim_iomap_table(pdev)[dt_block->bar];
- if (!dt_region->vaddr)
+ dt_region->vaddr.io = pcim_iomap_table(pdev)[dt_block->bar];
+ if (!dt_region->vaddr.io)
return -ENOMEM;
- dt_region->vaddr += dt_block->off;
+ dt_region->vaddr.io += dt_block->off;
dt_region->paddr = pci_bus_address(pdev, dt_block->bar);
dt_region->paddr += dt_block->off;
dt_region->sz = dt_block->sz;
@@ -265,20 +265,20 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev,
struct dw_edma_block *ll_block = &vsec_data.ll_rd[i];
struct dw_edma_block *dt_block = &vsec_data.dt_rd[i];
- ll_region->vaddr = pcim_iomap_table(pdev)[ll_block->bar];
- if (!ll_region->vaddr)
+ ll_region->vaddr.io = pcim_iomap_table(pdev)[ll_block->bar];
+ if (!ll_region->vaddr.io)
return -ENOMEM;
- ll_region->vaddr += ll_block->off;
+ ll_region->vaddr.io += ll_block->off;
ll_region->paddr = pci_bus_address(pdev, ll_block->bar);
ll_region->paddr += ll_block->off;
ll_region->sz = ll_block->sz;
- dt_region->vaddr = pcim_iomap_table(pdev)[dt_block->bar];
- if (!dt_region->vaddr)
+ dt_region->vaddr.io = pcim_iomap_table(pdev)[dt_block->bar];
+ if (!dt_region->vaddr.io)
return -ENOMEM;
- dt_region->vaddr += dt_block->off;
+ dt_region->vaddr.io += dt_block->off;
dt_region->paddr = pci_bus_address(pdev, dt_block->bar);
dt_region->paddr += dt_block->off;
dt_region->sz = dt_block->sz;
@@ -303,24 +303,24 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev,
pci_dbg(pdev, "L. List:\tWRITE CH%.2u, BAR=%u, off=0x%.8lx, sz=0x%zx bytes, addr(v=%p, p=%pa)\n",
i, vsec_data.ll_wr[i].bar,
vsec_data.ll_wr[i].off, chip->ll_region_wr[i].sz,
- chip->ll_region_wr[i].vaddr, &chip->ll_region_wr[i].paddr);
+ chip->ll_region_wr[i].vaddr.io, &chip->ll_region_wr[i].paddr);
pci_dbg(pdev, "Data:\tWRITE CH%.2u, BAR=%u, off=0x%.8lx, sz=0x%zx bytes, addr(v=%p, p=%pa)\n",
i, vsec_data.dt_wr[i].bar,
vsec_data.dt_wr[i].off, chip->dt_region_wr[i].sz,
- chip->dt_region_wr[i].vaddr, &chip->dt_region_wr[i].paddr);
+ chip->dt_region_wr[i].vaddr.io, &chip->dt_region_wr[i].paddr);
}
for (i = 0; i < chip->ll_rd_cnt; i++) {
pci_dbg(pdev, "L. List:\tREAD CH%.2u, BAR=%u, off=0x%.8lx, sz=0x%zx bytes, addr(v=%p, p=%pa)\n",
i, vsec_data.ll_rd[i].bar,
vsec_data.ll_rd[i].off, chip->ll_region_rd[i].sz,
- chip->ll_region_rd[i].vaddr, &chip->ll_region_rd[i].paddr);
+ chip->ll_region_rd[i].vaddr.io, &chip->ll_region_rd[i].paddr);
pci_dbg(pdev, "Data:\tREAD CH%.2u, BAR=%u, off=0x%.8lx, sz=0x%zx bytes, addr(v=%p, p=%pa)\n",
i, vsec_data.dt_rd[i].bar,
vsec_data.dt_rd[i].off, chip->dt_region_rd[i].sz,
- chip->dt_region_rd[i].vaddr, &chip->dt_region_rd[i].paddr);
+ chip->dt_region_rd[i].vaddr.io, &chip->dt_region_rd[i].paddr);
}
pci_dbg(pdev, "Nr. IRQs:\t%u\n", chip->nr_irqs);
diff --git a/drivers/dma/dw-edma/dw-edma-v0-core.c b/drivers/dma/dw-edma/dw-edma-v0-core.c
index 6bcc57512258..72e79a0c0a4e 100644
--- a/drivers/dma/dw-edma/dw-edma-v0-core.c
+++ b/drivers/dma/dw-edma/dw-edma-v0-core.c
@@ -159,9 +159,6 @@ static inline u32 readl_ch(struct dw_edma *dw, enum dw_edma_dir dir, u16 ch,
#define GET_CH_32(dw, dir, ch, name) \
readl_ch(dw, dir, ch, &(__dw_ch_regs(dw, dir, ch)->name))
-#define SET_LL_32(ll, value) \
- writel(value, ll)
-
static inline void writeq_ch(struct dw_edma *dw, enum dw_edma_dir dir, u16 ch,
u64 value, void __iomem *addr)
{
@@ -218,9 +215,6 @@ static inline u64 readq_ch(struct dw_edma *dw, enum dw_edma_dir dir, u16 ch,
#define GET_CH_64(dw, dir, ch, name) \
readq_ch(dw, dir, ch, &(__dw_ch_regs(dw, dir, ch)->name))
-#define SET_LL_64(ll, value) \
- writeq(value, ll)
-
/* eDMA management callbacks */
void dw_edma_v0_core_off(struct dw_edma *dw)
{
@@ -292,17 +286,53 @@ u32 dw_edma_v0_core_status_abort_int(struct dw_edma *dw, enum dw_edma_dir dir)
GET_RW_32(dw, dir, int_status));
}
+static void dw_edma_v0_write_ll_data(struct dw_edma_chunk *chunk, int i,
+ u32 control, u32 size, u64 sar, u64 dar)
+{
+ ptrdiff_t ofs = i * sizeof(struct dw_edma_v0_lli);
+
+ if (chunk->chan->dw->chip->flags & DW_EDMA_CHIP_LOCAL) {
+ struct dw_edma_v0_lli *lli = chunk->ll_region.vaddr.mem + ofs;
+
+ lli->control = control;
+ lli->transfer_size = size;
+ lli->sar.reg = sar;
+ lli->dar.reg = dar;
+ } else {
+ struct dw_edma_v0_lli __iomem *lli = chunk->ll_region.vaddr.io + ofs;
+
+ writel(control, &lli->control);
+ writel(size, &lli->transfer_size);
+ writeq(sar, &lli->sar.reg);
+ writeq(dar, &lli->dar.reg);
+ }
+}
+
+static void dw_edma_v0_write_ll_link(struct dw_edma_chunk *chunk,
+ int i, u32 control, u64 pointer)
+{
+ ptrdiff_t ofs = i * sizeof(struct dw_edma_v0_lli);
+
+ if (chunk->chan->dw->chip->flags & DW_EDMA_CHIP_LOCAL) {
+ struct dw_edma_v0_llp *llp = chunk->ll_region.vaddr.mem + ofs;
+
+ llp->control = control;
+ llp->llp.reg = pointer;
+ } else {
+ struct dw_edma_v0_llp __iomem *llp = chunk->ll_region.vaddr.io + ofs;
+
+ writel(control, &llp->control);
+ writeq(pointer, &llp->llp.reg);
+ }
+}
+
static void dw_edma_v0_core_write_chunk(struct dw_edma_chunk *chunk)
{
struct dw_edma_burst *child;
struct dw_edma_chan *chan = chunk->chan;
- struct dw_edma_v0_lli __iomem *lli;
- struct dw_edma_v0_llp __iomem *llp;
u32 control = 0, i = 0;
int j;
- lli = chunk->ll_region.vaddr;
-
if (chunk->cb)
control = DW_EDMA_V0_CB;
@@ -314,27 +344,16 @@ static void dw_edma_v0_core_write_chunk(struct dw_edma_chunk *chunk)
if (!(chan->dw->chip->flags & DW_EDMA_CHIP_LOCAL))
control |= DW_EDMA_V0_RIE;
}
- /* Channel control */
- SET_LL_32(&lli[i].control, control);
- /* Transfer size */
- SET_LL_32(&lli[i].transfer_size, child->sz);
- /* SAR */
- SET_LL_64(&lli[i].sar.reg, child->sar);
- /* DAR */
- SET_LL_64(&lli[i].dar.reg, child->dar);
-
- i++;
+
+ dw_edma_v0_write_ll_data(chunk, i++, control, child->sz,
+ child->sar, child->dar);
}
- llp = (void __iomem *)&lli[i];
control = DW_EDMA_V0_LLP | DW_EDMA_V0_TCB;
if (!chunk->cb)
control |= DW_EDMA_V0_CB;
- /* Channel control */
- SET_LL_32(&llp->control, control);
- /* Linked list */
- SET_LL_64(&llp->llp.reg, chunk->ll_region.paddr);
+ dw_edma_v0_write_ll_link(chunk, i, control, chunk->ll_region.paddr);
}
void dw_edma_v0_core_start(struct dw_edma_chunk *chunk, bool first)
diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h
index 96bfd0173f3a..3b80040b95cc 100644
--- a/include/linux/dma/edma.h
+++ b/include/linux/dma/edma.h
@@ -19,7 +19,10 @@ struct dw_edma;
struct dw_edma_region {
u64 paddr;
- void __iomem *vaddr;
+ union {
+ void *mem;
+ void __iomem *io;
+ } vaddr;
size_t sz;
};
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