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crypto: hisilicon/zip - support register checking
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The value of the register is changed after the task running. A debugfs
file node is added to help users to check the change of register values.

Signed-off-by: Longfang Liu <[email protected]>
Signed-off-by: Kai Ye <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
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@yekai123123 @herbertx
yekai123123 authored and herbertx committed Apr 15, 2022
1 parent 1617503 commit 9b0c97d
Showing 1 changed file with 70 additions and 8 deletions.
78 changes: 70 additions & 8 deletions drivers/crypto/hisilicon/zip/zip_main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -49,14 +49,18 @@

#define HZIP_QM_IDEL_STATUS 0x3040e4

#define HZIP_CORE_DEBUG_COMP_0 0x302000
#define HZIP_CORE_DEBUG_COMP_1 0x303000
#define HZIP_CORE_DEBUG_DECOMP_0 0x304000
#define HZIP_CORE_DEBUG_DECOMP_1 0x305000
#define HZIP_CORE_DEBUG_DECOMP_2 0x306000
#define HZIP_CORE_DEBUG_DECOMP_3 0x307000
#define HZIP_CORE_DEBUG_DECOMP_4 0x308000
#define HZIP_CORE_DEBUG_DECOMP_5 0x309000
#define HZIP_CORE_DFX_BASE 0x301000
#define HZIP_CLOCK_GATED_CONTL 0X301004
#define HZIP_CORE_DFX_COMP_0 0x302000
#define HZIP_CORE_DFX_COMP_1 0x303000
#define HZIP_CORE_DFX_DECOMP_0 0x304000
#define HZIP_CORE_DFX_DECOMP_1 0x305000
#define HZIP_CORE_DFX_DECOMP_2 0x306000
#define HZIP_CORE_DFX_DECOMP_3 0x307000
#define HZIP_CORE_DFX_DECOMP_4 0x308000
#define HZIP_CORE_DFX_DECOMP_5 0x309000
#define HZIP_CORE_REGS_BASE_LEN 0xB0
#define HZIP_CORE_REGS_DFX_LEN 0x28

#define HZIP_CORE_INT_SOURCE 0x3010A0
#define HZIP_CORE_INT_MASK_REG 0x3010A4
Expand Down Expand Up @@ -230,6 +234,48 @@ static const struct debugfs_reg32 hzip_dfx_regs[] = {
{"HZIP_DECOMP_LZ77_CURR_ST ", 0x9cull},
};

/* define the ZIP's dfx regs region and region length */
static struct dfx_diff_registers hzip_diff_regs[] = {
{
.reg_offset = HZIP_CORE_DFX_BASE,
.reg_len = HZIP_CORE_REGS_BASE_LEN,
}, {
.reg_offset = HZIP_CORE_DFX_COMP_0,
.reg_len = HZIP_CORE_REGS_DFX_LEN,
}, {
.reg_offset = HZIP_CORE_DFX_COMP_1,
.reg_len = HZIP_CORE_REGS_DFX_LEN,
}, {
.reg_offset = HZIP_CORE_DFX_DECOMP_0,
.reg_len = HZIP_CORE_REGS_DFX_LEN,
}, {
.reg_offset = HZIP_CORE_DFX_DECOMP_1,
.reg_len = HZIP_CORE_REGS_DFX_LEN,
}, {
.reg_offset = HZIP_CORE_DFX_DECOMP_2,
.reg_len = HZIP_CORE_REGS_DFX_LEN,
}, {
.reg_offset = HZIP_CORE_DFX_DECOMP_3,
.reg_len = HZIP_CORE_REGS_DFX_LEN,
}, {
.reg_offset = HZIP_CORE_DFX_DECOMP_4,
.reg_len = HZIP_CORE_REGS_DFX_LEN,
}, {
.reg_offset = HZIP_CORE_DFX_DECOMP_5,
.reg_len = HZIP_CORE_REGS_DFX_LEN,
},
};

static int hzip_diff_regs_show(struct seq_file *s, void *unused)
{
struct hisi_qm *qm = s->private;

hisi_qm_acc_diff_regs_dump(qm, s, qm->debug.acc_diff_regs,
ARRAY_SIZE(hzip_diff_regs));

return 0;
}
DEFINE_SHOW_ATTRIBUTE(hzip_diff_regs);
static const struct kernel_param_ops zip_uacce_mode_ops = {
.set = uacce_mode_set,
.get = param_get_int,
Expand Down Expand Up @@ -621,6 +667,7 @@ static int hisi_zip_core_debug_init(struct hisi_qm *qm)

static void hisi_zip_dfx_debug_init(struct hisi_qm *qm)
{
struct dfx_diff_registers *hzip_regs = qm->debug.acc_diff_regs;
struct hisi_zip *zip = container_of(qm, struct hisi_zip, qm);
struct hisi_zip_dfx *dfx = &zip->dfx;
struct dentry *tmp_dir;
Expand All @@ -634,6 +681,10 @@ static void hisi_zip_dfx_debug_init(struct hisi_qm *qm)
0644, tmp_dir, data,
&zip_atomic64_ops);
}

if (qm->fun_type == QM_HW_PF && hzip_regs)
debugfs_create_file("diff_regs", 0444, tmp_dir,
qm, &hzip_diff_regs_fops);
}

static int hisi_zip_ctrl_debug_init(struct hisi_qm *qm)
Expand Down Expand Up @@ -666,6 +717,13 @@ static int hisi_zip_debugfs_init(struct hisi_qm *qm)
qm->debug.sqe_mask_offset = HZIP_SQE_MASK_OFFSET;
qm->debug.sqe_mask_len = HZIP_SQE_MASK_LEN;
qm->debug.debug_root = dev_d;
ret = hisi_qm_diff_regs_init(qm, hzip_diff_regs,
ARRAY_SIZE(hzip_diff_regs));
if (ret) {
dev_warn(dev, "Failed to init ZIP diff regs!\n");
goto debugfs_remove;
}

hisi_qm_debug_init(qm);

if (qm->fun_type == QM_HW_PF) {
Expand All @@ -679,6 +737,8 @@ static int hisi_zip_debugfs_init(struct hisi_qm *qm)
return 0;

failed_to_create:
hisi_qm_diff_regs_uninit(qm, ARRAY_SIZE(hzip_diff_regs));
debugfs_remove:
debugfs_remove_recursive(hzip_debugfs_root);
return ret;
}
Expand All @@ -703,6 +763,8 @@ static void hisi_zip_debug_regs_clear(struct hisi_qm *qm)

static void hisi_zip_debugfs_exit(struct hisi_qm *qm)
{
hisi_qm_diff_regs_uninit(qm, ARRAY_SIZE(hzip_diff_regs));

debugfs_remove_recursive(qm->debug.debug_root);

if (qm->fun_type == QM_HW_PF) {
Expand Down

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