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PCI: rockchip: move the handshake data to the end of 1M

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Change-Id: Ia5a6587b3ef8de00434496c111bc035a09d4c6e6
Signed-off-by: Simon Xue <xxm@rock-chips.com>
Signed-off-by: Weixin Zhou <zwx@rock-chips.com>
This commit is contained in:
Weixin Zhou
2019-07-29 14:00:30 +08:00
parent cbb77ae430
commit 01fb8f2040
1 changed files with 5 additions and 4 deletions
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9
drivers/pci/host/rockchip-pcie-dma.c
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@@ -118,9 +118,9 @@
#define PCIE_DMA_WR_BUF_SIZE (PCIE_DMA_BUF_SIZE * PCIE_DMA_BUF_CNT)
#define PCIE_DMA_ACK_BASE (PCIE_DMA_RD_BUF_SIZE + PCIE_DMA_WR_BUF_SIZE)
#define PCIE_DMA_SET_DATA_CHECK_POS 0x0
#define PCIE_DMA_SET_LOCAL_IDX_POS 0x4
#define PCIE_DMA_SET_BUF_SIZE_POS 0x8
#define PCIE_DMA_SET_DATA_CHECK_POS (SZ_1M - 0x4)
#define PCIE_DMA_SET_LOCAL_IDX_POS (SZ_1M - 0x8)
#define PCIE_DMA_SET_BUF_SIZE_POS (SZ_1M - 0xc)
#define PCIE_DMA_DATA_CHECK 0x12345678
#define PCIE_DMA_DATA_ACK_CHECK 0xdeadbeef
@@ -171,6 +171,7 @@ static void rk_pcie_prepare_dma(struct dma_trx_obj *obj,
writel(local_idx, virt + PCIE_DMA_SET_LOCAL_IDX_POS);
writel(buf_size, virt + PCIE_DMA_SET_BUF_SIZE_POS);
buf_size = SZ_1M;
break;
case PCIE_DMA_DATA_RCV_ACK:
table = obj->table[PCIE_DMA_DATA_RCV_ACK_TABLE_OFFSET + idx];
@@ -306,7 +307,7 @@ static enum hrtimer_restart rk_pcie_scan_timer(struct hrtimer *timer)
if (sdv == PCIE_DMA_DATA_CHECK) {
if (!need_ack)
need_ack = true;
writel(0x0, scan_data_addr);
writel(0x0, scan_data_addr + PCIE_DMA_SET_DATA_CHECK_POS);
set_bit(i, &obj->local_read_available);
rk_pcie_prepare_dma(obj, idx, 0, 0, 0x4,
PCIE_DMA_DATA_RCV_ACK);