Re: [PATCH v7 02/10] crypto: hisilicon/qm: Move few definitions to common header

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On 02/03/2022 17:28, Shameer Kolothum wrote:
From: Longfang Liu <liulongfang@xxxxxxxxxx>

Move Doorbell and Mailbox definitions to common header
file. Also export QM mailbox functions.

This will be useful when we introduce VFIO PCI HiSilicon
ACC live migration driver.

Signed-off-by: Longfang Liu <liulongfang@xxxxxxxxxx>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@xxxxxxxxxx>
---
  drivers/crypto/hisilicon/qm.c | 32 +++++------------------------
  include/linux/hisi_acc_qm.h   | 38 +++++++++++++++++++++++++++++++++++
  2 files changed, 43 insertions(+), 27 deletions(-)

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index ed23e1d3fa27..8c29f9fba573 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -33,23 +33,6 @@
  #define QM_ABNORMAL_EVENT_IRQ_VECTOR	3
/* mailbox */
-#define QM_MB_CMD_SQC			0x0
-#define QM_MB_CMD_CQC			0x1
-#define QM_MB_CMD_EQC			0x2
-#define QM_MB_CMD_AEQC			0x3
-#define QM_MB_CMD_SQC_BT		0x4
-#define QM_MB_CMD_CQC_BT		0x5
-#define QM_MB_CMD_SQC_VFT_V2		0x6
-#define QM_MB_CMD_STOP_QP		0x8
-#define QM_MB_CMD_SRC			0xc
-#define QM_MB_CMD_DST			0xd
-
-#define QM_MB_CMD_SEND_BASE		0x300
-#define QM_MB_EVENT_SHIFT		8
-#define QM_MB_BUSY_SHIFT		13
-#define QM_MB_OP_SHIFT			14
-#define QM_MB_CMD_DATA_ADDR_L		0x304
-#define QM_MB_CMD_DATA_ADDR_H		0x308
  #define QM_MB_PING_ALL_VFS		0xffff
  #define QM_MB_CMD_DATA_SHIFT		32
  #define QM_MB_CMD_DATA_MASK		GENMASK(31, 0)
@@ -103,19 +86,12 @@
  #define QM_DB_CMD_SHIFT_V1		16
  #define QM_DB_INDEX_SHIFT_V1		32
  #define QM_DB_PRIORITY_SHIFT_V1		48
-#define QM_DOORBELL_SQ_CQ_BASE_V2	0x1000
-#define QM_DOORBELL_EQ_AEQ_BASE_V2	0x2000
  #define QM_QUE_ISO_CFG_V		0x0030
  #define QM_PAGE_SIZE			0x0034
  #define QM_QUE_ISO_EN			0x100154
  #define QM_CAPBILITY			0x100158
  #define QM_QP_NUN_MASK			GENMASK(10, 0)
  #define QM_QP_DB_INTERVAL		0x10000
-#define QM_QP_MAX_NUM_SHIFT		11
-#define QM_DB_CMD_SHIFT_V2		12
-#define QM_DB_RAND_SHIFT_V2		16
-#define QM_DB_INDEX_SHIFT_V2		32
-#define QM_DB_PRIORITY_SHIFT_V2		48
#define QM_MEM_START_INIT 0x100040
  #define QM_MEM_INIT_DONE		0x100044
@@ -693,7 +669,7 @@ static void qm_mb_pre_init(struct qm_mailbox *mailbox, u8 cmd,
  }
/* return 0 mailbox ready, -ETIMEDOUT hardware timeout */
-static int qm_wait_mb_ready(struct hisi_qm *qm)
+int qm_wait_mb_ready(struct hisi_qm *qm)
  {
  	u32 val;
@@ -701,6 +677,7 @@ static int qm_wait_mb_ready(struct hisi_qm *qm)
  					  val, !((val >> QM_MB_BUSY_SHIFT) &
  					  0x1), POLL_PERIOD, POLL_TIMEOUT);
  }
+EXPORT_SYMBOL_GPL(qm_wait_mb_ready);

Since these will be public they require a more distinctive name, like hisi_qm_wait_mb_ready or hisi_acc_qm_wait_mb_ready

/* 128 bit should be written to hardware at one time to trigger a mailbox */
  static void qm_mb_write(struct hisi_qm *qm, const void *src)
@@ -745,8 +722,8 @@ static int qm_mb_nolock(struct hisi_qm *qm, struct qm_mailbox *mailbox)
  	return -EBUSY;
  }
-static int qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue,
-		 bool op)
+int qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue,
+	  bool op)
  {
  	struct qm_mailbox mailbox;
  	int ret;
@@ -762,6 +739,7 @@ static int qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue,
return ret;
  }
+EXPORT_SYMBOL_GPL(qm_mb);
static void qm_db_v1(struct hisi_qm *qm, u16 qn, u8 cmd, u16 index, u8 priority)
  {
diff --git a/include/linux/hisi_acc_qm.h b/include/linux/hisi_acc_qm.h
index 3068093229a5..8befb59c6fb3 100644
--- a/include/linux/hisi_acc_qm.h
+++ b/include/linux/hisi_acc_qm.h
@@ -34,6 +34,40 @@
  #define QM_WUSER_M_CFG_ENABLE		0x1000a8
  #define WUSER_M_CFG_ENABLE		0xffffffff
+/* mailbox */
+#define QM_MB_CMD_SQC                   0x0
+#define QM_MB_CMD_CQC                   0x1
+#define QM_MB_CMD_EQC                   0x2
+#define QM_MB_CMD_AEQC                  0x3
+#define QM_MB_CMD_SQC_BT                0x4
+#define QM_MB_CMD_CQC_BT                0x5
+#define QM_MB_CMD_SQC_VFT_V2            0x6
+#define QM_MB_CMD_STOP_QP               0x8
+#define QM_MB_CMD_SRC                   0xc
+#define QM_MB_CMD_DST                   0xd
+
+#define QM_MB_CMD_SEND_BASE		0x300
+#define QM_MB_EVENT_SHIFT               8
+#define QM_MB_BUSY_SHIFT		13
+#define QM_MB_OP_SHIFT			14
+#define QM_MB_CMD_DATA_ADDR_L		0x304
+#define QM_MB_CMD_DATA_ADDR_H		0x308
+#define QM_MB_MAX_WAIT_CNT		6000
+
+/* doorbell */
+#define QM_DOORBELL_CMD_SQ              0
+#define QM_DOORBELL_CMD_CQ              1
+#define QM_DOORBELL_CMD_EQ              2
+#define QM_DOORBELL_CMD_AEQ             3
+
+#define QM_DOORBELL_SQ_CQ_BASE_V2	0x1000
+#define QM_DOORBELL_EQ_AEQ_BASE_V2	0x2000
+#define QM_QP_MAX_NUM_SHIFT             11
+#define QM_DB_CMD_SHIFT_V2		12
+#define QM_DB_RAND_SHIFT_V2		16
+#define QM_DB_INDEX_SHIFT_V2		32
+#define QM_DB_PRIORITY_SHIFT_V2		48
+
  /* qm cache */
  #define QM_CACHE_CTL			0x100050
  #define SQC_CACHE_ENABLE		BIT(0)
@@ -414,6 +448,10 @@ pci_ers_result_t hisi_qm_dev_slot_reset(struct pci_dev *pdev);
  void hisi_qm_reset_prepare(struct pci_dev *pdev);
  void hisi_qm_reset_done(struct pci_dev *pdev);
+int qm_wait_mb_ready(struct hisi_qm *qm);
+int qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue,
+	  bool op);

As above, please notice how everything else has a "hisi" prefix

+
  struct hisi_acc_sgl_pool;
  struct hisi_acc_hw_sgl *hisi_acc_sg_buf_map_to_hw_sgl(struct device *dev,
  	struct scatterlist *sgl, struct hisi_acc_sgl_pool *pool,




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