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dmaengine: hisilicon: Dump regs to debugfs 

This patch adds dump of registers with debugfs for HIP08
and HIP09 DMA driver.

Signed-off-by: Jie Hai <haijie1@huawei.com>
Acked-by: Zhou Wang <wangzhou1@hisilicon.com>
Link: https://lore.kernel.org/r/20220830062251.52993-7-haijie1@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Jie Hai 2022-08-30 14:22:50 +08:00 committed by Vinod Koul
parent fd5273fa08
commit 5dda7a62aa
1 changed files with 236 additions and 2 deletions
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238
drivers/dma/hisi_dma.c
View File

@ -78,6 +78,8 @@
#define HISI_DMA_POLL_Q_STS_DELAY_US 10
#define HISI_DMA_POLL_Q_STS_TIME_OUT_US 1000
#define HISI_DMA_MAX_DIR_NAME_LEN 128
/*
* The HIP08B(HiSilicon IP08) and HIP09A(HiSilicon IP09) are DMA iEPs, they
* have the same pci device id but different pci revision.
@ -164,6 +166,123 @@ struct hisi_dma_dev {
struct hisi_dma_chan chan[];
};
#ifdef CONFIG_DEBUG_FS
static const struct debugfs_reg32 hisi_dma_comm_chan_regs[] = {
{"DMA_QUEUE_SQ_DEPTH ", 0x0008ull},
{"DMA_QUEUE_SQ_TAIL_PTR ", 0x000Cull},
{"DMA_QUEUE_CQ_DEPTH ", 0x0018ull},
{"DMA_QUEUE_CQ_HEAD_PTR ", 0x001Cull},
{"DMA_QUEUE_CTRL0 ", 0x0020ull},
{"DMA_QUEUE_CTRL1 ", 0x0024ull},
{"DMA_QUEUE_FSM_STS ", 0x0030ull},
{"DMA_QUEUE_SQ_STS ", 0x0034ull},
{"DMA_QUEUE_CQ_TAIL_PTR ", 0x003Cull},
{"DMA_QUEUE_INT_STS ", 0x0040ull},
{"DMA_QUEUE_INT_MSK ", 0x0044ull},
{"DMA_QUEUE_INT_RO ", 0x006Cull},
};
static const struct debugfs_reg32 hisi_dma_hip08_chan_regs[] = {
{"DMA_QUEUE_BYTE_CNT ", 0x0038ull},
{"DMA_ERR_INT_NUM6 ", 0x0048ull},
{"DMA_QUEUE_DESP0 ", 0x0050ull},
{"DMA_QUEUE_DESP1 ", 0x0054ull},
{"DMA_QUEUE_DESP2 ", 0x0058ull},
{"DMA_QUEUE_DESP3 ", 0x005Cull},
{"DMA_QUEUE_DESP4 ", 0x0074ull},
{"DMA_QUEUE_DESP5 ", 0x0078ull},
{"DMA_QUEUE_DESP6 ", 0x007Cull},
{"DMA_QUEUE_DESP7 ", 0x0080ull},
{"DMA_ERR_INT_NUM0 ", 0x0084ull},
{"DMA_ERR_INT_NUM1 ", 0x0088ull},
{"DMA_ERR_INT_NUM2 ", 0x008Cull},
{"DMA_ERR_INT_NUM3 ", 0x0090ull},
{"DMA_ERR_INT_NUM4 ", 0x0094ull},
{"DMA_ERR_INT_NUM5 ", 0x0098ull},
{"DMA_QUEUE_SQ_STS2 ", 0x00A4ull},
};
static const struct debugfs_reg32 hisi_dma_hip09_chan_regs[] = {
{"DMA_QUEUE_ERR_INT_STS ", 0x0048ull},
{"DMA_QUEUE_ERR_INT_MSK ", 0x004Cull},
{"DFX_SQ_READ_ERR_PTR ", 0x0068ull},
{"DFX_DMA_ERR_INT_NUM0 ", 0x0084ull},
{"DFX_DMA_ERR_INT_NUM1 ", 0x0088ull},
{"DFX_DMA_ERR_INT_NUM2 ", 0x008Cull},
{"DFX_DMA_QUEUE_SQ_STS2 ", 0x00A4ull},
};
static const struct debugfs_reg32 hisi_dma_hip08_comm_regs[] = {
{"DMA_ECC_ERR_ADDR ", 0x2004ull},
{"DMA_ECC_ECC_CNT ", 0x2014ull},
{"COMMON_AND_CH_ERR_STS ", 0x2030ull},
{"LOCAL_CPL_ID_STS_0 ", 0x20E0ull},
{"LOCAL_CPL_ID_STS_1 ", 0x20E4ull},
{"LOCAL_CPL_ID_STS_2 ", 0x20E8ull},
{"LOCAL_CPL_ID_STS_3 ", 0x20ECull},
{"LOCAL_TLP_NUM ", 0x2158ull},
{"SQCQ_TLP_NUM ", 0x2164ull},
{"CPL_NUM ", 0x2168ull},
{"INF_BACK_PRESS_STS ", 0x2170ull},
{"DMA_CH_RAS_LEVEL ", 0x2184ull},
{"DMA_CM_RAS_LEVEL ", 0x2188ull},
{"DMA_CH_ERR_STS ", 0x2190ull},
{"DMA_CH_DONE_STS ", 0x2194ull},
{"DMA_SQ_TAG_STS_0 ", 0x21A0ull},
{"DMA_SQ_TAG_STS_1 ", 0x21A4ull},
{"DMA_SQ_TAG_STS_2 ", 0x21A8ull},
{"DMA_SQ_TAG_STS_3 ", 0x21ACull},
{"LOCAL_P_ID_STS_0 ", 0x21B0ull},
{"LOCAL_P_ID_STS_1 ", 0x21B4ull},
{"LOCAL_P_ID_STS_2 ", 0x21B8ull},
{"LOCAL_P_ID_STS_3 ", 0x21BCull},
{"DMA_PREBUFF_INFO_0 ", 0x2200ull},
{"DMA_CM_TABLE_INFO_0 ", 0x2220ull},
{"DMA_CM_CE_RO ", 0x2244ull},
{"DMA_CM_NFE_RO ", 0x2248ull},
{"DMA_CM_FE_RO ", 0x224Cull},
};
static const struct debugfs_reg32 hisi_dma_hip09_comm_regs[] = {
{"COMMON_AND_CH_ERR_STS ", 0x0030ull},
{"DMA_PORT_IDLE_STS ", 0x0150ull},
{"DMA_CH_RAS_LEVEL ", 0x0184ull},
{"DMA_CM_RAS_LEVEL ", 0x0188ull},
{"DMA_CM_CE_RO ", 0x0244ull},
{"DMA_CM_NFE_RO ", 0x0248ull},
{"DMA_CM_FE_RO ", 0x024Cull},
{"DFX_INF_BACK_PRESS_STS0 ", 0x1A40ull},
{"DFX_INF_BACK_PRESS_STS1 ", 0x1A44ull},
{"DFX_INF_BACK_PRESS_STS2 ", 0x1A48ull},
{"DFX_DMA_WRR_DISABLE ", 0x1A4Cull},
{"DFX_PA_REQ_TLP_NUM ", 0x1C00ull},
{"DFX_PA_BACK_TLP_NUM ", 0x1C04ull},
{"DFX_PA_RETRY_TLP_NUM ", 0x1C08ull},
{"DFX_LOCAL_NP_TLP_NUM ", 0x1C0Cull},
{"DFX_LOCAL_CPL_HEAD_TLP_NUM ", 0x1C10ull},
{"DFX_LOCAL_CPL_DATA_TLP_NUM ", 0x1C14ull},
{"DFX_LOCAL_CPL_EXT_DATA_TLP_NUM ", 0x1C18ull},
{"DFX_LOCAL_P_HEAD_TLP_NUM ", 0x1C1Cull},
{"DFX_LOCAL_P_ACK_TLP_NUM ", 0x1C20ull},
{"DFX_BUF_ALOC_PORT_REQ_NUM ", 0x1C24ull},
{"DFX_BUF_ALOC_PORT_RESULT_NUM ", 0x1C28ull},
{"DFX_BUF_FAIL_SIZE_NUM ", 0x1C2Cull},
{"DFX_BUF_ALOC_SIZE_NUM ", 0x1C30ull},
{"DFX_BUF_NP_RELEASE_SIZE_NUM ", 0x1C34ull},
{"DFX_BUF_P_RELEASE_SIZE_NUM ", 0x1C38ull},
{"DFX_BUF_PORT_RELEASE_SIZE_NUM ", 0x1C3Cull},
{"DFX_DMA_PREBUF_MEM0_ECC_ERR_ADDR ", 0x1CA8ull},
{"DFX_DMA_PREBUF_MEM0_ECC_CNT ", 0x1CACull},
{"DFX_DMA_LOC_NP_OSTB_ECC_ERR_ADDR ", 0x1CB0ull},
{"DFX_DMA_LOC_NP_OSTB_ECC_CNT ", 0x1CB4ull},
{"DFX_DMA_PREBUF_MEM1_ECC_ERR_ADDR ", 0x1CC0ull},
{"DFX_DMA_PREBUF_MEM1_ECC_CNT ", 0x1CC4ull},
{"DMA_CH_DONE_STS ", 0x02E0ull},
{"DMA_CH_ERR_STS ", 0x0320ull},
};
#endif /* CONFIG_DEBUG_FS*/
static enum hisi_dma_reg_layout hisi_dma_get_reg_layout(struct pci_dev *pdev)
{
if (pdev->revision == HISI_DMA_REVISION_HIP08B)
@ -717,6 +836,117 @@ static void hisi_dma_init_dma_dev(struct hisi_dma_dev *hdma_dev)
INIT_LIST_HEAD(&dma_dev->channels);
}
/* --- debugfs implementation --- */
#ifdef CONFIG_DEBUG_FS
#include <linux/debugfs.h>
static struct debugfs_reg32 *hisi_dma_get_ch_regs(struct hisi_dma_dev *hdma_dev,
u32 *regs_sz)
{
struct device *dev = &hdma_dev->pdev->dev;
struct debugfs_reg32 *regs;
u32 regs_sz_comm;
regs_sz_comm = ARRAY_SIZE(hisi_dma_comm_chan_regs);
if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08)
*regs_sz = regs_sz_comm + ARRAY_SIZE(hisi_dma_hip08_chan_regs);
else
*regs_sz = regs_sz_comm + ARRAY_SIZE(hisi_dma_hip09_chan_regs);
regs = devm_kcalloc(dev, *regs_sz, sizeof(struct debugfs_reg32),
GFP_KERNEL);
if (!regs)
return NULL;
memcpy(regs, hisi_dma_comm_chan_regs, sizeof(hisi_dma_comm_chan_regs));
if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08)
memcpy(regs + regs_sz_comm, hisi_dma_hip08_chan_regs,
sizeof(hisi_dma_hip08_chan_regs));
else
memcpy(regs + regs_sz_comm, hisi_dma_hip09_chan_regs,
sizeof(hisi_dma_hip09_chan_regs));
return regs;
}
static int hisi_dma_create_chan_dir(struct hisi_dma_dev *hdma_dev)
{
char dir_name[HISI_DMA_MAX_DIR_NAME_LEN];
struct debugfs_regset32 *regsets;
struct debugfs_reg32 *regs;
struct dentry *chan_dir;
struct device *dev;
u32 regs_sz;
int ret;
int i;
dev = &hdma_dev->pdev->dev;
regsets = devm_kcalloc(dev, hdma_dev->chan_num,
sizeof(*regsets), GFP_KERNEL);
if (!regsets)
return -ENOMEM;
regs = hisi_dma_get_ch_regs(hdma_dev, &regs_sz);
if (!regs)
return -ENOMEM;
for (i = 0; i < hdma_dev->chan_num; i++) {
regsets[i].regs = regs;
regsets[i].nregs = regs_sz;
regsets[i].base = hdma_dev->queue_base + i * HISI_DMA_Q_OFFSET;
regsets[i].dev = dev;
memset(dir_name, 0, HISI_DMA_MAX_DIR_NAME_LEN);
ret = sprintf(dir_name, "channel%d", i);
if (ret < 0)
return ret;
chan_dir = debugfs_create_dir(dir_name,
hdma_dev->dma_dev.dbg_dev_root);
debugfs_create_regset32("regs", 0444, chan_dir, &regsets[i]);
}
return 0;
}
static void hisi_dma_create_debugfs(struct hisi_dma_dev *hdma_dev)
{
struct debugfs_regset32 *regset;
struct device *dev;
int ret;
dev = &hdma_dev->pdev->dev;
if (hdma_dev->dma_dev.dbg_dev_root == NULL)
return;
regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);
if (!regset)
return;
if (hdma_dev->reg_layout == HISI_DMA_REG_LAYOUT_HIP08) {
regset->regs = hisi_dma_hip08_comm_regs;
regset->nregs = ARRAY_SIZE(hisi_dma_hip08_comm_regs);
} else {
regset->regs = hisi_dma_hip09_comm_regs;
regset->nregs = ARRAY_SIZE(hisi_dma_hip09_comm_regs);
}
regset->base = hdma_dev->base;
regset->dev = dev;
debugfs_create_regset32("regs", 0444,
hdma_dev->dma_dev.dbg_dev_root, regset);
ret = hisi_dma_create_chan_dir(hdma_dev);
if (ret < 0)
dev_info(&hdma_dev->pdev->dev, "fail to create debugfs for channels!\n");
}
#else
static void hisi_dma_create_debugfs(struct hisi_dma_dev *hdma_dev) { }
#endif /* CONFIG_DEBUG_FS*/
/* --- debugfs implementation --- */
static int hisi_dma_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
enum hisi_dma_reg_layout reg_layout;
@ -793,10 +1023,14 @@ static int hisi_dma_probe(struct pci_dev *pdev, const struct pci_device_id *id)
dma_dev = &hdma_dev->dma_dev;
ret = dmaenginem_async_device_register(dma_dev);
if (ret < 0)
if (ret < 0) {
dev_err(dev, "failed to register device!\n");
return ret;
}
return ret;
hisi_dma_create_debugfs(hdma_dev);
return 0;
}
static const struct pci_device_id hisi_dma_pci_tbl[] = {