// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright(c) 2019 HiSilicon Limited. */
+/* Copyright(c) 2019-2022 HiSilicon Limited. */
+
#include <linux/bitfield.h>
#include <linux/dmaengine.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include "virt-dma.h"
-#define HISI_DMA_SQ_BASE_L 0x0
-#define HISI_DMA_SQ_BASE_H 0x4
-#define HISI_DMA_SQ_DEPTH 0x8
-#define HISI_DMA_SQ_TAIL_PTR 0xc
-#define HISI_DMA_CQ_BASE_L 0x10
-#define HISI_DMA_CQ_BASE_H 0x14
-#define HISI_DMA_CQ_DEPTH 0x18
-#define HISI_DMA_CQ_HEAD_PTR 0x1c
-#define HISI_DMA_CTRL0 0x20
-#define HISI_DMA_CTRL0_QUEUE_EN_S 0
-#define HISI_DMA_CTRL0_QUEUE_PAUSE_S 4
-#define HISI_DMA_CTRL1 0x24
-#define HISI_DMA_CTRL1_QUEUE_RESET_S 0
-#define HISI_DMA_Q_FSM_STS 0x30
-#define HISI_DMA_FSM_STS_MASK GENMASK(3, 0)
-#define HISI_DMA_INT_STS 0x40
-#define HISI_DMA_INT_STS_MASK GENMASK(12, 0)
-#define HISI_DMA_INT_MSK 0x44
-#define HISI_DMA_MODE 0x217c
-#define HISI_DMA_OFFSET 0x100
-
-#define HISI_DMA_MSI_NUM 32
-#define HISI_DMA_CHAN_NUM 30
-#define HISI_DMA_Q_DEPTH_VAL 1024
-
-#define PCI_BAR_2 2
-
-#define HISI_DMA_POLL_Q_STS_DELAY_US 10
-#define HISI_DMA_POLL_Q_STS_TIME_OUT_US 1000
+/* HiSilicon DMA register common field define */
+#define HISI_DMA_Q_SQ_BASE_L 0x0
+#define HISI_DMA_Q_SQ_BASE_H 0x4
+#define HISI_DMA_Q_SQ_DEPTH 0x8
+#define HISI_DMA_Q_SQ_TAIL_PTR 0xc
+#define HISI_DMA_Q_CQ_BASE_L 0x10
+#define HISI_DMA_Q_CQ_BASE_H 0x14
+#define HISI_DMA_Q_CQ_DEPTH 0x18
+#define HISI_DMA_Q_CQ_HEAD_PTR 0x1c
+#define HISI_DMA_Q_CTRL0 0x20
+#define HISI_DMA_Q_CTRL0_QUEUE_EN BIT(0)
+#define HISI_DMA_Q_CTRL0_QUEUE_PAUSE BIT(4)
+#define HISI_DMA_Q_CTRL1 0x24
+#define HISI_DMA_Q_CTRL1_QUEUE_RESET BIT(0)
+#define HISI_DMA_Q_FSM_STS 0x30
+#define HISI_DMA_Q_FSM_STS_MASK GENMASK(3, 0)
+#define HISI_DMA_Q_ERR_INT_NUM0 0x84
+#define HISI_DMA_Q_ERR_INT_NUM1 0x88
+#define HISI_DMA_Q_ERR_INT_NUM2 0x8c
+
+/* HiSilicon IP08 DMA register and field define */
+#define HISI_DMA_HIP08_MODE 0x217C
+#define HISI_DMA_HIP08_Q_BASE 0x0
+#define HISI_DMA_HIP08_Q_CTRL0_ERR_ABORT_EN BIT(2)
+#define HISI_DMA_HIP08_Q_INT_STS 0x40
+#define HISI_DMA_HIP08_Q_INT_MSK 0x44
+#define HISI_DMA_HIP08_Q_INT_STS_MASK GENMASK(14, 0)
+#define HISI_DMA_HIP08_Q_ERR_INT_NUM3 0x90
+#define HISI_DMA_HIP08_Q_ERR_INT_NUM4 0x94
+#define HISI_DMA_HIP08_Q_ERR_INT_NUM5 0x98
+#define HISI_DMA_HIP08_Q_ERR_INT_NUM6 0x48
+#define HISI_DMA_HIP08_Q_CTRL0_SQCQ_DRCT BIT(24)
+
+/* HiSilicon IP09 DMA register and field define */
+#define HISI_DMA_HIP09_DMA_FLR_DISABLE 0xA00
+#define HISI_DMA_HIP09_DMA_FLR_DISABLE_B BIT(0)
+#define HISI_DMA_HIP09_Q_BASE 0x2000
+#define HISI_DMA_HIP09_Q_CTRL0_ERR_ABORT_EN GENMASK(31, 28)
+#define HISI_DMA_HIP09_Q_CTRL0_SQ_DRCT BIT(26)
+#define HISI_DMA_HIP09_Q_CTRL0_CQ_DRCT BIT(27)
+#define HISI_DMA_HIP09_Q_CTRL1_VA_ENABLE BIT(2)
+#define HISI_DMA_HIP09_Q_INT_STS 0x40
+#define HISI_DMA_HIP09_Q_INT_MSK 0x44
+#define HISI_DMA_HIP09_Q_INT_STS_MASK 0x1
+#define HISI_DMA_HIP09_Q_ERR_INT_STS 0x48
+#define HISI_DMA_HIP09_Q_ERR_INT_MSK 0x4C
+#define HISI_DMA_HIP09_Q_ERR_INT_STS_MASK GENMASK(18, 1)
+#define HISI_DMA_HIP09_PORT_CFG_REG(port_id) (0x800 + \
+ (port_id) * 0x20)
+#define HISI_DMA_HIP09_PORT_CFG_LINK_DOWN_MASK_B BIT(16)
+
+#define HISI_DMA_HIP09_MAX_PORT_NUM 16
+
+#define HISI_DMA_HIP08_MSI_NUM 32
+#define HISI_DMA_HIP08_CHAN_NUM 30
+#define HISI_DMA_HIP09_MSI_NUM 4
+#define HISI_DMA_HIP09_CHAN_NUM 4
+#define HISI_DMA_REVISION_HIP08B 0x21
+#define HISI_DMA_REVISION_HIP09A 0x30
+
+#define HISI_DMA_Q_OFFSET 0x100
+#define HISI_DMA_Q_DEPTH_VAL 1024
+
+#define PCI_BAR_2 2
+
+#define HISI_DMA_POLL_Q_STS_DELAY_US 10
+#define HISI_DMA_POLL_Q_STS_TIME_OUT_US 1000
+
+/*
+ * The HIP08B(HiSilicon IP08) and HIP09A(HiSilicon IP09) are DMA iEPs, they
+ * have the same pci device id but different pci revision.
+ * Unfortunately, they have different register layouts, so two layout
+ * enumerations are defined.
+ */
+enum hisi_dma_reg_layout {
+ HISI_DMA_REG_LAYOUT_INVALID = 0,
+ HISI_DMA_REG_LAYOUT_HIP08,
+ HISI_DMA_REG_LAYOUT_HIP09
+};
enum hisi_dma_mode {
EP = 0,
struct dma_device dma_dev;
u32 chan_num;
u32 chan_depth;
+ enum hisi_dma_reg_layout reg_layout;
+ void __iomem *queue_base; /* queue region start of register */
struct hisi_dma_chan chan[];
};
+static enum hisi_dma_reg_layout hisi_dma_get_reg_layout(struct pci_dev *pdev)
+{
+ if (pdev->revision == HISI_DMA_REVISION_HIP08B)
+ return HISI_DMA_REG_LAYOUT_HIP08;
+ else if (pdev->revision >= HISI_DMA_REVISION_HIP09A)
+ return HISI_DMA_REG_LAYOUT_HIP09;
+
+ return HISI_DMA_REG_LAYOUT_INVALID;
+}
+
+static u32 hisi_dma_get_chan_num(struct pci_dev *pdev)
+{
+ if (pdev->revision == HISI_DMA_REVISION_HIP08B)
+ return HISI_DMA_HIP08_CHAN_NUM;
+
+ return HISI_DMA_HIP09_CHAN_NUM;
+}
+
+static u32 hisi_dma_get_msi_num(struct pci_dev *pdev)
+{
+ if (pdev->revision == HISI_DMA_REVISION_HIP08B)
+ return HISI_DMA_HIP08_MSI_NUM;
+
+ return HISI_DMA_HIP09_MSI_NUM;
+}
+
+static u32 hisi_dma_get_queue_base(struct pci_dev *pdev)
+{
+ if (pdev->revision == HISI_DMA_REVISION_HIP08B)
+ return HISI_DMA_HIP08_Q_BASE;
+
+ return HISI_DMA_HIP09_Q_BASE;
+}
+
static inline struct hisi_dma_chan *to_hisi_dma_chan(struct dma_chan *c)
{
return container_of(c, struct hisi_dma_chan, vc.chan);
static inline void hisi_dma_chan_write(void __iomem *base, u32 reg, u32 index,
u32 val)
{
- writel_relaxed(val, base + reg + index * HISI_DMA_OFFSET);
+ writel_relaxed(val, base + reg + index * HISI_DMA_Q_OFFSET);
}
static inline void hisi_dma_update_bit(void __iomem *addr, u32 pos, bool val)
u32 tmp;
tmp = readl_relaxed(addr);
- tmp = val ? tmp | BIT(pos) : tmp & ~BIT(pos);
+ tmp = val ? tmp | pos : tmp & ~pos;
writel_relaxed(tmp, addr);
}
static void hisi_dma_pause_dma(struct hisi_dma_dev *hdma_dev, u32 index,
bool pause)
{
- void __iomem *addr = hdma_dev->base + HISI_DMA_CTRL0 + index *
- HISI_DMA_OFFSET;
+ void __iomem *addr;
- hisi_dma_update_bit(addr, HISI_DMA_CTRL0_QUEUE_PAUSE_S, pause);
+ addr = hdma_dev->queue_base + HISI_DMA_Q_CTRL0 +
+ index * HISI_DMA_Q_OFFSET;
+ hisi_dma_update_bit(addr, HISI_DMA_Q_CTRL0_QUEUE_PAUSE, pause);
}
static void hisi_dma_enable_dma(struct hisi_dma_dev *hdma_dev, u32 index,
bool enable)
{
- void __iomem *addr = hdma_dev->base + HISI_DMA_CTRL0 + index *
- HISI_DMA_OFFSET;
+ void __iomem *addr;
- hisi_dma_update_bit(addr, HISI_DMA_CTRL0_QUEUE_EN_S, enable);
+ addr = hdma_dev->queue_base + HISI_DMA_Q_CTRL0 +
+ index * HISI_DMA_Q_OFFSET;
+ hisi_dma_update_bit(addr, HISI_DMA_Q_CTRL0_QUEUE_EN, enable);
}
static void hisi_dma_mask_irq(struct hisi_dma_dev *hdma_dev, u32 qp_index)
{
- hisi_dma_chan_write(hdma_dev->base, HISI_DMA_INT_MSK, qp_index,
- HISI_DMA_INT_STS_MASK);
+ void __iomem *q_base = hdma_dev->queue_base;
+
+ if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08)
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_INT_MSK,
+ qp_index, HISI_DMA_HIP08_Q_INT_STS_MASK);
+ else {
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_INT_MSK,
+ qp_index, HISI_DMA_HIP09_Q_INT_STS_MASK);
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_ERR_INT_MSK,
+ qp_index,
+ HISI_DMA_HIP09_Q_ERR_INT_STS_MASK);
+ }
}
static void hisi_dma_unmask_irq(struct hisi_dma_dev *hdma_dev, u32 qp_index)
{
- void __iomem *base = hdma_dev->base;
-
- hisi_dma_chan_write(base, HISI_DMA_INT_STS, qp_index,
- HISI_DMA_INT_STS_MASK);
- hisi_dma_chan_write(base, HISI_DMA_INT_MSK, qp_index, 0);
+ void __iomem *q_base = hdma_dev->queue_base;
+
+ if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08) {
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_INT_STS,
+ qp_index, HISI_DMA_HIP08_Q_INT_STS_MASK);
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_INT_MSK,
+ qp_index, 0);
+ } else {
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_INT_STS,
+ qp_index, HISI_DMA_HIP09_Q_INT_STS_MASK);
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_ERR_INT_STS,
+ qp_index,
+ HISI_DMA_HIP09_Q_ERR_INT_STS_MASK);
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_INT_MSK,
+ qp_index, 0);
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP09_Q_ERR_INT_MSK,
+ qp_index, 0);
+ }
}
static void hisi_dma_do_reset(struct hisi_dma_dev *hdma_dev, u32 index)
{
- void __iomem *addr = hdma_dev->base + HISI_DMA_CTRL1 + index *
- HISI_DMA_OFFSET;
+ void __iomem *addr;
- hisi_dma_update_bit(addr, HISI_DMA_CTRL1_QUEUE_RESET_S, 1);
+ addr = hdma_dev->queue_base +
+ HISI_DMA_Q_CTRL1 + index * HISI_DMA_Q_OFFSET;
+ hisi_dma_update_bit(addr, HISI_DMA_Q_CTRL1_QUEUE_RESET, 1);
}
static void hisi_dma_reset_qp_point(struct hisi_dma_dev *hdma_dev, u32 index)
{
- hisi_dma_chan_write(hdma_dev->base, HISI_DMA_SQ_TAIL_PTR, index, 0);
- hisi_dma_chan_write(hdma_dev->base, HISI_DMA_CQ_HEAD_PTR, index, 0);
+ void __iomem *q_base = hdma_dev->queue_base;
+
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_SQ_TAIL_PTR, index, 0);
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_HEAD_PTR, index, 0);
}
static void hisi_dma_reset_or_disable_hw_chan(struct hisi_dma_chan *chan,
hisi_dma_enable_dma(hdma_dev, index, false);
hisi_dma_mask_irq(hdma_dev, index);
- addr = hdma_dev->base +
- HISI_DMA_Q_FSM_STS + index * HISI_DMA_OFFSET;
+ addr = hdma_dev->queue_base +
+ HISI_DMA_Q_FSM_STS + index * HISI_DMA_Q_OFFSET;
ret = readl_relaxed_poll_timeout(addr, tmp,
- FIELD_GET(HISI_DMA_FSM_STS_MASK, tmp) != RUN,
+ FIELD_GET(HISI_DMA_Q_FSM_STS_MASK, tmp) != RUN,
HISI_DMA_POLL_Q_STS_DELAY_US, HISI_DMA_POLL_Q_STS_TIME_OUT_US);
if (ret) {
dev_err(&hdma_dev->pdev->dev, "disable channel timeout!\n");
}
ret = readl_relaxed_poll_timeout(addr, tmp,
- FIELD_GET(HISI_DMA_FSM_STS_MASK, tmp) == IDLE,
+ FIELD_GET(HISI_DMA_Q_FSM_STS_MASK, tmp) == IDLE,
HISI_DMA_POLL_Q_STS_DELAY_US, HISI_DMA_POLL_Q_STS_TIME_OUT_US);
if (ret) {
dev_err(&hdma_dev->pdev->dev, "reset channel timeout!\n");
chan->sq_tail = (chan->sq_tail + 1) % hdma_dev->chan_depth;
/* update sq_tail to trigger a new task */
- hisi_dma_chan_write(hdma_dev->base, HISI_DMA_SQ_TAIL_PTR, chan->qp_num,
- chan->sq_tail);
+ hisi_dma_chan_write(hdma_dev->queue_base, HISI_DMA_Q_SQ_TAIL_PTR,
+ chan->qp_num, chan->sq_tail);
}
static void hisi_dma_issue_pending(struct dma_chan *c)
static void hisi_dma_init_hw_qp(struct hisi_dma_dev *hdma_dev, u32 index)
{
struct hisi_dma_chan *chan = &hdma_dev->chan[index];
+ void __iomem *q_base = hdma_dev->queue_base;
u32 hw_depth = hdma_dev->chan_depth - 1;
- void __iomem *base = hdma_dev->base;
+ void __iomem *addr;
+ u32 tmp;
/* set sq, cq base */
- hisi_dma_chan_write(base, HISI_DMA_SQ_BASE_L, index,
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_SQ_BASE_L, index,
lower_32_bits(chan->sq_dma));
- hisi_dma_chan_write(base, HISI_DMA_SQ_BASE_H, index,
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_SQ_BASE_H, index,
upper_32_bits(chan->sq_dma));
- hisi_dma_chan_write(base, HISI_DMA_CQ_BASE_L, index,
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_BASE_L, index,
lower_32_bits(chan->cq_dma));
- hisi_dma_chan_write(base, HISI_DMA_CQ_BASE_H, index,
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_BASE_H, index,
upper_32_bits(chan->cq_dma));
/* set sq, cq depth */
- hisi_dma_chan_write(base, HISI_DMA_SQ_DEPTH, index, hw_depth);
- hisi_dma_chan_write(base, HISI_DMA_CQ_DEPTH, index, hw_depth);
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_SQ_DEPTH, index, hw_depth);
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_DEPTH, index, hw_depth);
/* init sq tail and cq head */
- hisi_dma_chan_write(base, HISI_DMA_SQ_TAIL_PTR, index, 0);
- hisi_dma_chan_write(base, HISI_DMA_CQ_HEAD_PTR, index, 0);
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_SQ_TAIL_PTR, index, 0);
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_HEAD_PTR, index, 0);
+
+ /* init error interrupt stats */
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_ERR_INT_NUM0, index, 0);
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_ERR_INT_NUM1, index, 0);
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_ERR_INT_NUM2, index, 0);
+
+ if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08) {
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_ERR_INT_NUM3,
+ index, 0);
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_ERR_INT_NUM4,
+ index, 0);
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_ERR_INT_NUM5,
+ index, 0);
+ hisi_dma_chan_write(q_base, HISI_DMA_HIP08_Q_ERR_INT_NUM6,
+ index, 0);
+ /*
+ * init SQ/CQ direction selecting register.
+ * "0" is to local side and "1" is to remote side.
+ */
+ addr = q_base + HISI_DMA_Q_CTRL0 + index * HISI_DMA_Q_OFFSET;
+ hisi_dma_update_bit(addr, HISI_DMA_HIP08_Q_CTRL0_SQCQ_DRCT, 0);
+
+ /*
+ * 0 - Continue to next descriptor if error occurs.
+ * 1 - Abort the DMA queue if error occurs.
+ */
+ hisi_dma_update_bit(addr,
+ HISI_DMA_HIP08_Q_CTRL0_ERR_ABORT_EN, 0);
+ } else {
+ addr = q_base + HISI_DMA_Q_CTRL0 + index * HISI_DMA_Q_OFFSET;
+
+ /*
+ * init SQ/CQ direction selecting register.
+ * "0" is to local side and "1" is to remote side.
+ */
+ hisi_dma_update_bit(addr, HISI_DMA_HIP09_Q_CTRL0_SQ_DRCT, 0);
+ hisi_dma_update_bit(addr, HISI_DMA_HIP09_Q_CTRL0_CQ_DRCT, 0);
+
+ /*
+ * 0 - Continue to next descriptor if error occurs.
+ * 1 - Abort the DMA queue if error occurs.
+ */
+
+ tmp = readl_relaxed(addr);
+ tmp &= ~HISI_DMA_HIP09_Q_CTRL0_ERR_ABORT_EN;
+ writel_relaxed(tmp, addr);
+
+ /*
+ * 0 - dma should process FLR whith CPU.
+ * 1 - dma not process FLR, only cpu process FLR.
+ */
+ addr = q_base + HISI_DMA_HIP09_DMA_FLR_DISABLE +
+ index * HISI_DMA_Q_OFFSET;
+ hisi_dma_update_bit(addr, HISI_DMA_HIP09_DMA_FLR_DISABLE_B, 0);
+
+ addr = q_base + HISI_DMA_Q_CTRL1 + index * HISI_DMA_Q_OFFSET;
+ hisi_dma_update_bit(addr, HISI_DMA_HIP09_Q_CTRL1_VA_ENABLE, 1);
+ }
}
static void hisi_dma_enable_qp(struct hisi_dma_dev *hdma_dev, u32 qp_index)
struct hisi_dma_dev *hdma_dev = chan->hdma_dev;
struct hisi_dma_desc *desc;
struct hisi_dma_cqe *cqe;
+ void __iomem *q_base;
spin_lock(&chan->vc.lock);
desc = chan->desc;
cqe = chan->cq + chan->cq_head;
+ q_base = hdma_dev->queue_base;
if (desc) {
chan->cq_head = (chan->cq_head + 1) % hdma_dev->chan_depth;
- hisi_dma_chan_write(hdma_dev->base, HISI_DMA_CQ_HEAD_PTR,
+ hisi_dma_chan_write(q_base, HISI_DMA_Q_CQ_HEAD_PTR,
chan->qp_num, chan->cq_head);
if (FIELD_GET(STATUS_MASK, cqe->w0) == STATUS_SUCC) {
vchan_cookie_complete(&desc->vd);
static void hisi_dma_set_mode(struct hisi_dma_dev *hdma_dev,
enum hisi_dma_mode mode)
{
- writel_relaxed(mode == RC ? 1 : 0, hdma_dev->base + HISI_DMA_MODE);
+ if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08)
+ writel_relaxed(mode == RC ? 1 : 0,
+ hdma_dev->base + HISI_DMA_HIP08_MODE);
+}
+
+static void hisi_dma_init_hw(struct hisi_dma_dev *hdma_dev)
+{
+ void __iomem *addr;
+ int i;
+
+ if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP09) {
+ for (i = 0; i < HISI_DMA_HIP09_MAX_PORT_NUM; i++) {
+ addr = hdma_dev->base + HISI_DMA_HIP09_PORT_CFG_REG(i);
+ hisi_dma_update_bit(addr,
+ HISI_DMA_HIP09_PORT_CFG_LINK_DOWN_MASK_B, 1);
+ }
+ }
+}
+
+static void hisi_dma_init_dma_dev(struct hisi_dma_dev *hdma_dev)
+{
+ struct dma_device *dma_dev;
+
+ dma_dev = &hdma_dev->dma_dev;
+ dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask);
+ dma_dev->device_free_chan_resources = hisi_dma_free_chan_resources;
+ dma_dev->device_prep_dma_memcpy = hisi_dma_prep_dma_memcpy;
+ dma_dev->device_tx_status = hisi_dma_tx_status;
+ dma_dev->device_issue_pending = hisi_dma_issue_pending;
+ dma_dev->device_terminate_all = hisi_dma_terminate_all;
+ dma_dev->device_synchronize = hisi_dma_synchronize;
+ dma_dev->directions = BIT(DMA_MEM_TO_MEM);
+ dma_dev->dev = &hdma_dev->pdev->dev;
+ INIT_LIST_HEAD(&dma_dev->channels);
}
static int hisi_dma_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
+ enum hisi_dma_reg_layout reg_layout;
struct device *dev = &pdev->dev;
struct hisi_dma_dev *hdma_dev;
struct dma_device *dma_dev;
+ u32 chan_num;
+ u32 msi_num;
int ret;
+ reg_layout = hisi_dma_get_reg_layout(pdev);
+ if (reg_layout == HISI_DMA_REG_LAYOUT_INVALID) {
+ dev_err(dev, "unsupported device!\n");
+ return -EINVAL;
+ }
+
ret = pcim_enable_device(pdev);
if (ret) {
dev_err(dev, "failed to enable device mem!\n");
if (ret)
return ret;
- hdma_dev = devm_kzalloc(dev, struct_size(hdma_dev, chan, HISI_DMA_CHAN_NUM), GFP_KERNEL);
+ chan_num = hisi_dma_get_chan_num(pdev);
+ hdma_dev = devm_kzalloc(dev, struct_size(hdma_dev, chan, chan_num),
+ GFP_KERNEL);
if (!hdma_dev)
return -EINVAL;
hdma_dev->base = pcim_iomap_table(pdev)[PCI_BAR_2];
hdma_dev->pdev = pdev;
- hdma_dev->chan_num = HISI_DMA_CHAN_NUM;
hdma_dev->chan_depth = HISI_DMA_Q_DEPTH_VAL;
+ hdma_dev->chan_num = chan_num;
+ hdma_dev->reg_layout = reg_layout;
+ hdma_dev->queue_base = hdma_dev->base + hisi_dma_get_queue_base(pdev);
pci_set_drvdata(pdev, hdma_dev);
pci_set_master(pdev);
+ msi_num = hisi_dma_get_msi_num(pdev);
+
/* This will be freed by 'pcim_release()'. See 'pcim_enable_device()' */
- ret = pci_alloc_irq_vectors(pdev, HISI_DMA_MSI_NUM, HISI_DMA_MSI_NUM,
- PCI_IRQ_MSI);
+ ret = pci_alloc_irq_vectors(pdev, msi_num, msi_num, PCI_IRQ_MSI);
if (ret < 0) {
dev_err(dev, "Failed to allocate MSI vectors!\n");
return ret;
}
- dma_dev = &hdma_dev->dma_dev;
- dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask);
- dma_dev->device_free_chan_resources = hisi_dma_free_chan_resources;
- dma_dev->device_prep_dma_memcpy = hisi_dma_prep_dma_memcpy;
- dma_dev->device_tx_status = hisi_dma_tx_status;
- dma_dev->device_issue_pending = hisi_dma_issue_pending;
- dma_dev->device_terminate_all = hisi_dma_terminate_all;
- dma_dev->device_synchronize = hisi_dma_synchronize;
- dma_dev->directions = BIT(DMA_MEM_TO_MEM);
- dma_dev->dev = dev;
- INIT_LIST_HEAD(&dma_dev->channels);
+ hisi_dma_init_dma_dev(hdma_dev);
hisi_dma_set_mode(hdma_dev, RC);
+ hisi_dma_init_hw(hdma_dev);
+
ret = hisi_dma_enable_hw_channels(hdma_dev);
if (ret < 0) {
dev_err(dev, "failed to enable hw channel!\n");
if (ret)
return ret;
+ dma_dev = &hdma_dev->dma_dev;
ret = dmaenginem_async_device_register(dma_dev);
if (ret < 0)
dev_err(dev, "failed to register device!\n");
projects / linux-2.6-microblaze.git / commitdiff