RDMA/hns: Remove asynchronic QP destroy

Verbs destroy callbacks are synchronous operations and can't be delayed.
The expectation is that after driver returned from destroy function, the
memory can be freed and user won't be able to access it again.

Ditch workqueue implementation used in HNS driver.

Fixes: d838c481 ("IB/hns: Fix the bug when destroy qp")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: oulijun <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/hns/hns_roce_common.h

@@ -57,32 +57,6 @@
 #define roce_set_bit(origin, shift, val) \
 	roce_set_field((origin), (1ul << (shift)), (shift), (val))
 
-/*
- * roce_hw_index_cmp_lt - Compare two hardware index values in hisilicon
- *                        SOC, check if a is less than b.
- * @a: hardware index value
- * @b: hardware index value
- * @bits: the number of bits of a and b, range: 0~31.
- *
- * Hardware index increases continuously till max value, and then restart
- * from zero, again and again. Because the bits of reg field is often
- * limited, the reg field can only hold the low bits of the hardware index
- * in hisilicon SOC.
- * In some scenes we need to compare two values(a,b) getted from two reg
- * fields in this driver, for example:
- * If a equals 0xfffe, b equals 0x1 and bits equals 16, we think b has
- * incresed from 0xffff to 0x1 and a is less than b.
- * If a equals 0xfffe, b equals 0x0xf001 and bits equals 16, we think a
- * is bigger than b.
- *
- * Return true on a less than b, otherwise false.
- */
-#define roce_hw_index_mask(bits)	((1ul << (bits)) - 1)
-#define roce_hw_index_shift(bits)	(32 - (bits))
-#define roce_hw_index_cmp_lt(a, b, bits) \
-	((int)((((a) - (b)) & roce_hw_index_mask(bits)) << \
-		roce_hw_index_shift(bits)) < 0)
-
 #define ROCEE_GLB_CFG_ROCEE_DB_SQ_MODE_S 3
 #define ROCEE_GLB_CFG_ROCEE_DB_OTH_MODE_S 4
 
@@ -271,8 +245,6 @@
 #define ROCEE_SDB_SEND_PTR_SDB_SEND_PTR_M   \
 	(((1UL << 28) - 1) << ROCEE_SDB_SEND_PTR_SDB_SEND_PTR_S)
 
-#define ROCEE_SDB_PTR_CMP_BITS 28
-
 #define ROCEE_SDB_INV_CNT_SDB_INV_CNT_S 0
 #define ROCEE_SDB_INV_CNT_SDB_INV_CNT_M   \
 	(((1UL << 16) - 1) << ROCEE_SDB_INV_CNT_SDB_INV_CNT_S)
@@ -353,13 +325,8 @@
 #define ROCEE_CAEP_AE_MASK_REG			0x6C8
 #define ROCEE_CAEP_AE_ST_REG			0x6CC
 
-#define ROCEE_SDB_ISSUE_PTR_REG			0x758
-#define ROCEE_SDB_SEND_PTR_REG			0x75C
 #define ROCEE_CAEP_CQE_WCMD_EMPTY		0x850
 #define ROCEE_SCAEP_WR_CQE_CNT			0x8D0
-#define ROCEE_SDB_INV_CNT_REG			0x9A4
-#define ROCEE_SDB_RETRY_CNT_REG			0x9AC
-#define ROCEE_TSP_BP_ST_REG			0x9EC
 #define ROCEE_ECC_UCERR_ALM0_REG		0xB34
 #define ROCEE_ECC_CERR_ALM0_REG			0xB40
 

drivers/infiniband/hw/hns/hns_roce_hw_v1.h

@@ -110,11 +110,6 @@
 #define HNS_ROCE_V1_EXT_ODB_ALFUL	\
 	(HNS_ROCE_V1_EXT_ODB_DEPTH - HNS_ROCE_V1_DB_RSVD)
 
-#define HNS_ROCE_V1_DB_WAIT_OK				0
-#define HNS_ROCE_V1_DB_STAGE1				1
-#define HNS_ROCE_V1_DB_STAGE2				2
-#define HNS_ROCE_V1_CHECK_DB_TIMEOUT_MSECS		10000
-#define HNS_ROCE_V1_CHECK_DB_SLEEP_MSECS		20
 #define HNS_ROCE_V1_FREE_MR_TIMEOUT_MSECS		50000
 #define HNS_ROCE_V1_RECREATE_LP_QP_TIMEOUT_MSECS	10000
 #define HNS_ROCE_V1_FREE_MR_WAIT_VALUE			5
@@ -162,7 +157,6 @@
 #define SQ_PSN_SHIFT					8
 #define QKEY_VAL					0x80010000
 #define SDB_INV_CNT_OFFSET				8
-#define SDB_ST_CMP_VAL					8
 
 #define HNS_ROCE_CEQ_DEFAULT_INTERVAL			0x10
 #define HNS_ROCE_CEQ_DEFAULT_BURST_NUM			0x10
@@ -1068,11 +1062,6 @@ struct hns_roce_qp_work {
 	u32	sche_cnt;
 };
 
-struct hns_roce_des_qp {
-	struct workqueue_struct	*qp_wq;
-	int	requeue_flag;
-};
-
 struct hns_roce_mr_free_work {
 	struct	work_struct work;
 	struct	ib_device *ib_dev;
@@ -1100,7 +1089,6 @@ struct hns_roce_v1_priv {
 	struct hns_roce_raq_table raq_table;
 	struct hns_roce_bt_table  bt_table;
 	struct hns_roce_tptr_table tptr_table;
-	struct hns_roce_des_qp des_qp;
 	struct hns_roce_free_mr free_mr;
 };