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Date: Tue, 26 Jul 2022 09:40:00 +0800
From: Jie Hai <haijie1@...wei.com>
To: Vinod Koul <vkoul@...nel.org>
CC: <wangzhou1@...ilicon.com>, <dmaengine@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 5/7] dmaengine: hisilicon: Adapt DMA driver to
HiSilicon IP09
On 2022/7/21 21:29, Vinod Koul wrote:
> On 29-06-22, 11:55, Jie Hai wrote:
>> The HiSilicon IP08 and HiSilicon IP09 are DMA iEPs, they
>> have the same pci device id but different pci revision.
>> Unfortunately, they have different register layouts, so
>> the origin driver cannot run on HiSilicon IP09 correctly.
>>
>> This patch enables the driver to adapt to HiSilicon IP09.
>> HiSilicon IP09 offers 4 channels, each channel has a send
>> queue, a complete queue and an interrupt to help to do tasks.
>> This DMA engine can do memory copy between memory blocks.
>>
>> Signed-off-by: Jie Hai <haijie1@...wei.com>
>> ---
>> drivers/dma/hisi_dma.c | 382 ++++++++++++++++++++++++++++++++---------
>> 1 file changed, 299 insertions(+), 83 deletions(-)
>>
>> diff --git a/drivers/dma/hisi_dma.c b/drivers/dma/hisi_dma.c
>> index d5f87ef4a5ee..dc7c59b21114 100644
>> --- a/drivers/dma/hisi_dma.c
>> +++ b/drivers/dma/hisi_dma.c
>> @@ -1,5 +1,6 @@
>> // 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>
>> @@ -9,35 +10,85 @@
>> #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 0
>> +#define HISI_DMA_Q_CTRL0_QUEUE_PAUSE 4
>
> Pls use BIT/GENMASK only for register bits
>
Thanks for your reviewing.
This issue has been fixed in V3.
>> +#define HISI_DMA_Q_CTRL1 0x24
>> +#define HISI_DMA_Q_CTRL1_QUEUE_RESET 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 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 24
>> +
>> +/* HiSilicon IP09 DMA register and field define */
>> +#define HISI_DMA_HIP09_DMA_FLR_DISABLE 0xA00
>> +#define HISI_DMA_HIP09_DMA_FLR_DISABLE_B 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 26
>> +#define HISI_DMA_HIP09_Q_CTRL0_CQ_DRCT 27
>> +#define HISI_DMA_HIP09_Q_CTRL1_VA_ENABLE 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 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,
>> @@ -108,9 +159,45 @@ struct hisi_dma_dev {
>> 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);
>> @@ -124,7 +211,7 @@ static inline struct hisi_dma_desc *to_hisi_dma_desc(struct virt_dma_desc *vd)
>> 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)
>> @@ -139,48 +226,76 @@ static inline void hisi_dma_update_bit(void __iomem *addr, u32 pos, bool val)
>> 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,
>> @@ -195,11 +310,11 @@ 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) {
>> @@ -217,7 +332,7 @@ static void hisi_dma_reset_or_disable_hw_chan(struct hisi_dma_chan *chan,
>> }
>>
>> 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) {
>> @@ -300,8 +415,8 @@ static void hisi_dma_start_transfer(struct hisi_dma_chan *chan)
>> 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)
>> @@ -375,26 +490,86 @@ static int hisi_dma_alloc_qps_mem(struct hisi_dma_dev *hdma_dev)
>> 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)
>> @@ -438,17 +613,18 @@ static irqreturn_t hisi_dma_irq(int irq, void *data)
>> 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, chan->qp_num,
>> - chan->cq_head);
>> + 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);
>> hisi_dma_start_transfer(chan);
>> @@ -508,16 +684,58 @@ static void hisi_dma_disable_hw_channels(void *data)
>> 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");
>> @@ -534,40 +752,37 @@ static int hisi_dma_probe(struct pci_dev *pdev, const struct pci_device_id *id)
>> 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");
>> @@ -579,6 +794,7 @@ static int hisi_dma_probe(struct pci_dev *pdev, const struct pci_device_id *id)
>> 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");
>> --
>> 2.33.0
>
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