[PATCH net-next v2 0/4] hisilicon hns deadcoding

[PATCH net-next v2 0/4] hisilicon hns deadcoding

[linux]

From: "Dr. David Alan Gilbert" <linux@treblig.org>

Hi,
  A small set of deadcoding for functions that are not
called, and a couple of function pointers that they
called.

Build tested only; I don't have the hardware.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>

v2
  Add a patch to remove unused enums as recommended
  by Jijie's review

Dr. David Alan Gilbert (4):
  net: hisilicon: hns: Remove unused hns_dsaf_roce_reset
  net: hisilicon: hns: Remove unused hns_rcb_start
  net: hisilicon: hns: Remove reset helpers
  net: hisilicon: hns: Remove unused enums

 .../ethernet/hisilicon/hns/hns_dsaf_main.c    | 109 ------------------
 .../ethernet/hisilicon/hns/hns_dsaf_main.h    |  28 -----
 .../ethernet/hisilicon/hns/hns_dsaf_misc.c    |  67 -----------
 .../net/ethernet/hisilicon/hns/hns_dsaf_rcb.c |   5 -
 .../net/ethernet/hisilicon/hns/hns_dsaf_rcb.h |   1 -
 5 files changed, 210 deletions(-)

-- 
2.47.1

[PATCH net-next v2 1/4] net: hisilicon: hns: Remove unused hns_dsaf_roce_reset

[linux]

From: "Dr. David Alan Gilbert" <linux@treblig.org>

hns_dsaf_roce_reset() has been unused since 2021's
commit 38d220882426 ("RDMA/hns: Remove support for HIP06")

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
---
 .../ethernet/hisilicon/hns/hns_dsaf_main.c    | 109 ------------------
 .../ethernet/hisilicon/hns/hns_dsaf_main.h    |   2 -
 2 files changed, 111 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
index 851490346261..6b6ced37e490 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
@@ -3019,115 +3019,6 @@ static struct platform_driver g_dsaf_driver = {
 
 module_platform_driver(g_dsaf_driver);
 
-/**
- * hns_dsaf_roce_reset - reset dsaf and roce
- * @dsaf_fwnode: Pointer to framework node for the dasf
- * @dereset: false - request reset , true - drop reset
- * return 0 - success , negative -fail
- */
-int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, bool dereset)
-{
-	struct dsaf_device *dsaf_dev;
-	struct platform_device *pdev;
-	u32 mp;
-	u32 sl;
-	u32 credit;
-	int i;
-	static const u32 port_map[DSAF_ROCE_CREDIT_CHN][DSAF_ROCE_CHAN_MODE_NUM] = {
-		{DSAF_ROCE_PORT_0, DSAF_ROCE_PORT_0, DSAF_ROCE_PORT_0},
-		{DSAF_ROCE_PORT_1, DSAF_ROCE_PORT_0, DSAF_ROCE_PORT_0},
-		{DSAF_ROCE_PORT_2, DSAF_ROCE_PORT_1, DSAF_ROCE_PORT_0},
-		{DSAF_ROCE_PORT_3, DSAF_ROCE_PORT_1, DSAF_ROCE_PORT_0},
-		{DSAF_ROCE_PORT_4, DSAF_ROCE_PORT_2, DSAF_ROCE_PORT_1},
-		{DSAF_ROCE_PORT_4, DSAF_ROCE_PORT_2, DSAF_ROCE_PORT_1},
-		{DSAF_ROCE_PORT_5, DSAF_ROCE_PORT_3, DSAF_ROCE_PORT_1},
-		{DSAF_ROCE_PORT_5, DSAF_ROCE_PORT_3, DSAF_ROCE_PORT_1},
-	};
-	static const u32 sl_map[DSAF_ROCE_CREDIT_CHN][DSAF_ROCE_CHAN_MODE_NUM] = {
-		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_0},
-		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_1, DSAF_ROCE_SL_1},
-		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_2},
-		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_1, DSAF_ROCE_SL_3},
-		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_0},
-		{DSAF_ROCE_SL_1, DSAF_ROCE_SL_1, DSAF_ROCE_SL_1},
-		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_2},
-		{DSAF_ROCE_SL_1, DSAF_ROCE_SL_1, DSAF_ROCE_SL_3},
-	};
-
-	/* find the platform device corresponding to fwnode */
-	if (is_of_node(dsaf_fwnode)) {
-		pdev = of_find_device_by_node(to_of_node(dsaf_fwnode));
-	} else if (is_acpi_device_node(dsaf_fwnode)) {
-		pdev = hns_dsaf_find_platform_device(dsaf_fwnode);
-	} else {
-		pr_err("fwnode is neither OF or ACPI type\n");
-		return -EINVAL;
-	}
-
-	/* check if we were a success in fetching pdev */
-	if (!pdev) {
-		pr_err("couldn't find platform device for node\n");
-		return -ENODEV;
-	}
-
-	/* retrieve the dsaf_device from the driver data */
-	dsaf_dev = dev_get_drvdata(&pdev->dev);
-	if (!dsaf_dev) {
-		dev_err(&pdev->dev, "dsaf_dev is NULL\n");
-		put_device(&pdev->dev);
-		return -ENODEV;
-	}
-
-	/* now, make sure we are running on compatible SoC */
-	if (AE_IS_VER1(dsaf_dev->dsaf_ver)) {
-		dev_err(dsaf_dev->dev, "%s v1 chip doesn't support RoCE!\n",
-			dsaf_dev->ae_dev.name);
-		put_device(&pdev->dev);
-		return -ENODEV;
-	}
-
-	/* do reset or de-reset according to the flag */
-	if (!dereset) {
-		/* reset rocee-channels in dsaf and rocee */
-		dsaf_dev->misc_op->hns_dsaf_srst_chns(dsaf_dev, DSAF_CHNS_MASK,
-						      false);
-		dsaf_dev->misc_op->hns_dsaf_roce_srst(dsaf_dev, false);
-	} else {
-		/* configure dsaf tx roce correspond to port map and sl map */
-		mp = dsaf_read_dev(dsaf_dev, DSAF_ROCE_PORT_MAP_REG);
-		for (i = 0; i < DSAF_ROCE_CREDIT_CHN; i++)
-			dsaf_set_field(mp, 7 << i * 3, i * 3,
-				       port_map[i][DSAF_ROCE_6PORT_MODE]);
-		dsaf_set_field(mp, 3 << i * 3, i * 3, 0);
-		dsaf_write_dev(dsaf_dev, DSAF_ROCE_PORT_MAP_REG, mp);
-
-		sl = dsaf_read_dev(dsaf_dev, DSAF_ROCE_SL_MAP_REG);
-		for (i = 0; i < DSAF_ROCE_CREDIT_CHN; i++)
-			dsaf_set_field(sl, 3 << i * 2, i * 2,
-				       sl_map[i][DSAF_ROCE_6PORT_MODE]);
-		dsaf_write_dev(dsaf_dev, DSAF_ROCE_SL_MAP_REG, sl);
-
-		/* de-reset rocee-channels in dsaf and rocee */
-		dsaf_dev->misc_op->hns_dsaf_srst_chns(dsaf_dev, DSAF_CHNS_MASK,
-						      true);
-		msleep(SRST_TIME_INTERVAL);
-		dsaf_dev->misc_op->hns_dsaf_roce_srst(dsaf_dev, true);
-
-		/* enable dsaf channel rocee credit */
-		credit = dsaf_read_dev(dsaf_dev, DSAF_SBM_ROCEE_CFG_REG_REG);
-		dsaf_set_bit(credit, DSAF_SBM_ROCEE_CFG_CRD_EN_B, 0);
-		dsaf_write_dev(dsaf_dev, DSAF_SBM_ROCEE_CFG_REG_REG, credit);
-
-		dsaf_set_bit(credit, DSAF_SBM_ROCEE_CFG_CRD_EN_B, 1);
-		dsaf_write_dev(dsaf_dev, DSAF_SBM_ROCEE_CFG_REG_REG, credit);
-	}
-
-	put_device(&pdev->dev);
-
-	return 0;
-}
-EXPORT_SYMBOL(hns_dsaf_roce_reset);
-
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Huawei Tech. Co., Ltd.");
 MODULE_DESCRIPTION("HNS DSAF driver");
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
index 0eb03dff1a8b..c90f41c75500 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
@@ -463,6 +463,4 @@ int hns_dsaf_clr_mac_mc_port(struct dsaf_device *dsaf_dev,
 			     u8 mac_id, u8 port_num);
 int hns_dsaf_wait_pkt_clean(struct dsaf_device *dsaf_dev, int port);
 
-int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, bool dereset);
-
 #endif /* __HNS_DSAF_MAIN_H__ */
-- 
2.47.1

[PATCH net-next v2 2/4] net: hisilicon: hns: Remove unused hns_rcb_start

[linux]

From: "Dr. David Alan Gilbert" <linux@treblig.org>

hns_rcb_start() has been unused since 2016's
commit 454784d85de3 ("net: hns: delete redundancy ring enable operations")

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Jijie Shao<shaojijie@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c | 5 -----
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h | 1 -
 2 files changed, 6 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
index 46af467aa596..635b3a95dd82 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
@@ -195,11 +195,6 @@ void hns_rcb_ring_enable_hw(struct hnae_queue *q, u32 val)
 	dsaf_write_dev(q, RCB_RING_PREFETCH_EN_REG, !!val);
 }
 
-void hns_rcb_start(struct hnae_queue *q, u32 val)
-{
-	hns_rcb_ring_enable_hw(q, val);
-}
-
 /**
  *hns_rcb_common_init_commit_hw - make rcb common init completed
  *@rcb_common: rcb common device
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
index 0f4cc184ef39..68f81547dfb4 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
@@ -116,7 +116,6 @@ int hns_rcb_buf_size2type(u32 buf_size);
 int hns_rcb_common_get_cfg(struct dsaf_device *dsaf_dev, int comm_index);
 void hns_rcb_common_free_cfg(struct dsaf_device *dsaf_dev, u32 comm_index);
 int hns_rcb_common_init_hw(struct rcb_common_cb *rcb_common);
-void hns_rcb_start(struct hnae_queue *q, u32 val);
 int hns_rcb_get_cfg(struct rcb_common_cb *rcb_common);
 void hns_rcb_get_queue_mode(enum dsaf_mode dsaf_mode,
 			    u16 *max_vfn, u16 *max_q_per_vf);
-- 
2.47.1

[PATCH net-next v2 3/4] net: hisilicon: hns: Remove reset helpers

[linux]

From: "Dr. David Alan Gilbert" <linux@treblig.org>

With hns_dsaf_roce_reset() removed in a previous patch, the two
helper member pointers, 'hns_dsaf_roce_srst',  and 'hns_dsaf_srst_chns'
are now unread.

Remove them, and the helper functions that they were initialised
to, that is hns_dsaf_srst_chns(), hns_dsaf_srst_chns_acpi(),
hns_dsaf_roce_srst() and hns_dsaf_roce_srst_acpi().

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Jijie Shao<shaojijie@huawei.com>
---
 .../ethernet/hisilicon/hns/hns_dsaf_main.h    |  3 -
 .../ethernet/hisilicon/hns/hns_dsaf_misc.c    | 67 -------------------
 2 files changed, 70 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
index c90f41c75500..bb8267aafc43 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
@@ -307,9 +307,6 @@ struct dsaf_misc_op {
 	void (*ge_srst)(struct dsaf_device *dsaf_dev, u32 port, bool dereset);
 	void (*ppe_srst)(struct dsaf_device *dsaf_dev, u32 port, bool dereset);
 	void (*ppe_comm_srst)(struct dsaf_device *dsaf_dev, bool dereset);
-	void (*hns_dsaf_srst_chns)(struct dsaf_device *dsaf_dev, u32 msk,
-				   bool dereset);
-	void (*hns_dsaf_roce_srst)(struct dsaf_device *dsaf_dev, bool dereset);
 
 	phy_interface_t (*get_phy_if)(struct hns_mac_cb *mac_cb);
 	int (*get_sfp_prsnt)(struct hns_mac_cb *mac_cb, int *sfp_prsnt);
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
index 5df19c604d09..91391a49fcea 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
@@ -326,69 +326,6 @@ static void hns_dsaf_xge_srst_by_port_acpi(struct dsaf_device *dsaf_dev,
 				   HNS_XGE_RESET_FUNC, port, dereset);
 }
 
-/**
- * hns_dsaf_srst_chns - reset dsaf channels
- * @dsaf_dev: dsaf device struct pointer
- * @msk: xbar channels mask value:
- * @dereset: false - request reset , true - drop reset
- *
- * bit0-5 for xge0-5
- * bit6-11 for ppe0-5
- * bit12-17 for roce0-5
- * bit18-19 for com/dfx
- */
-static void
-hns_dsaf_srst_chns(struct dsaf_device *dsaf_dev, u32 msk, bool dereset)
-{
-	u32 reg_addr;
-
-	if (!dereset)
-		reg_addr = DSAF_SUB_SC_DSAF_RESET_REQ_REG;
-	else
-		reg_addr = DSAF_SUB_SC_DSAF_RESET_DREQ_REG;
-
-	dsaf_write_sub(dsaf_dev, reg_addr, msk);
-}
-
-/**
- * hns_dsaf_srst_chns_acpi - reset dsaf channels
- * @dsaf_dev: dsaf device struct pointer
- * @msk: xbar channels mask value:
- * @dereset: false - request reset , true - drop reset
- *
- * bit0-5 for xge0-5
- * bit6-11 for ppe0-5
- * bit12-17 for roce0-5
- * bit18-19 for com/dfx
- */
-static void
-hns_dsaf_srst_chns_acpi(struct dsaf_device *dsaf_dev, u32 msk, bool dereset)
-{
-	hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
-				   HNS_DSAF_CHN_RESET_FUNC,
-				   msk, dereset);
-}
-
-static void hns_dsaf_roce_srst(struct dsaf_device *dsaf_dev, bool dereset)
-{
-	if (!dereset) {
-		dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_ROCEE_RESET_REQ_REG, 1);
-	} else {
-		dsaf_write_sub(dsaf_dev,
-			       DSAF_SUB_SC_ROCEE_CLK_DIS_REG, 1);
-		dsaf_write_sub(dsaf_dev,
-			       DSAF_SUB_SC_ROCEE_RESET_DREQ_REG, 1);
-		msleep(20);
-		dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_ROCEE_CLK_EN_REG, 1);
-	}
-}
-
-static void hns_dsaf_roce_srst_acpi(struct dsaf_device *dsaf_dev, bool dereset)
-{
-	hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
-				   HNS_ROCE_RESET_FUNC, 0, dereset);
-}
-
 static void hns_dsaf_ge_srst_by_port(struct dsaf_device *dsaf_dev, u32 port,
 				     bool dereset)
 {
@@ -729,8 +666,6 @@ struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
 		misc_op->ge_srst = hns_dsaf_ge_srst_by_port;
 		misc_op->ppe_srst = hns_ppe_srst_by_port;
 		misc_op->ppe_comm_srst = hns_ppe_com_srst;
-		misc_op->hns_dsaf_srst_chns = hns_dsaf_srst_chns;
-		misc_op->hns_dsaf_roce_srst = hns_dsaf_roce_srst;
 
 		misc_op->get_phy_if = hns_mac_get_phy_if;
 		misc_op->get_sfp_prsnt = hns_mac_get_sfp_prsnt;
@@ -746,8 +681,6 @@ struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
 		misc_op->ge_srst = hns_dsaf_ge_srst_by_port_acpi;
 		misc_op->ppe_srst = hns_ppe_srst_by_port_acpi;
 		misc_op->ppe_comm_srst = hns_ppe_com_srst;
-		misc_op->hns_dsaf_srst_chns = hns_dsaf_srst_chns_acpi;
-		misc_op->hns_dsaf_roce_srst = hns_dsaf_roce_srst_acpi;
 
 		misc_op->get_phy_if = hns_mac_get_phy_if_acpi;
 		misc_op->get_sfp_prsnt = hns_mac_get_sfp_prsnt_acpi;
-- 
2.47.1

[PATCH net-next v2 4/4] net: hisilicon: hns: Remove unused enums

[linux]

From: "Dr. David Alan Gilbert" <linux@treblig.org>

The enums dsaf_roce_port_mode, dsaf_roce_port_num and dsaf_roce_qos_sl
are unused after the removal of the reset code.

Remove them.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
---
 .../ethernet/hisilicon/hns/hns_dsaf_main.h    | 23 -------------------
 1 file changed, 23 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
index bb8267aafc43..653dfbb25d1b 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
@@ -42,29 +42,6 @@ struct hns_mac_cb;
 
 #define HNS_MAX_WAIT_CNT 10000
 
-enum dsaf_roce_port_mode {
-	DSAF_ROCE_6PORT_MODE,
-	DSAF_ROCE_4PORT_MODE,
-	DSAF_ROCE_2PORT_MODE,
-	DSAF_ROCE_CHAN_MODE_NUM,
-};
-
-enum dsaf_roce_port_num {
-	DSAF_ROCE_PORT_0,
-	DSAF_ROCE_PORT_1,
-	DSAF_ROCE_PORT_2,
-	DSAF_ROCE_PORT_3,
-	DSAF_ROCE_PORT_4,
-	DSAF_ROCE_PORT_5,
-};
-
-enum dsaf_roce_qos_sl {
-	DSAF_ROCE_SL_0,
-	DSAF_ROCE_SL_1,
-	DSAF_ROCE_SL_2,
-	DSAF_ROCE_SL_3,
-};
-
 #define DSAF_STATS_READ(p, offset) (*((u64 *)((u8 *)(p) + (offset))))
 #define HNS_DSAF_IS_DEBUG(dev) ((dev)->dsaf_mode == DSAF_MODE_DISABLE_SP)
 
-- 
2.47.1

Re: [PATCH net-next v2 1/4] net: hisilicon: hns: Remove unused hns_dsaf_roce_reset

[Jijie Shao]

on 2024/12/19 0:33, linux@treblig.org wrote:
> From: "Dr. David Alan Gilbert" <linux@treblig.org>
>
> hns_dsaf_roce_reset() has been unused since 2021's
> commit 38d220882426 ("RDMA/hns: Remove support for HIP06")
>
> Remove it.

Thanks,

Reviewed-by: Jijie Shao<shaojijie@huawei.com>


>
> Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
> ---
>   .../ethernet/hisilicon/hns/hns_dsaf_main.c    | 109 ------------------
>   .../ethernet/hisilicon/hns/hns_dsaf_main.h    |   2 -
>   2 files changed, 111 deletions(-)
>
> diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
> index 851490346261..6b6ced37e490 100644
> --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
> +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
> @@ -3019,115 +3019,6 @@ static struct platform_driver g_dsaf_driver = {
>   
>   module_platform_driver(g_dsaf_driver);
>   
> -/**
> - * hns_dsaf_roce_reset - reset dsaf and roce
> - * @dsaf_fwnode: Pointer to framework node for the dasf
> - * @dereset: false - request reset , true - drop reset
> - * return 0 - success , negative -fail
> - */
> -int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, bool dereset)
> -{
> -	struct dsaf_device *dsaf_dev;
> -	struct platform_device *pdev;
> -	u32 mp;
> -	u32 sl;
> -	u32 credit;
> -	int i;
> -	static const u32 port_map[DSAF_ROCE_CREDIT_CHN][DSAF_ROCE_CHAN_MODE_NUM] = {
> -		{DSAF_ROCE_PORT_0, DSAF_ROCE_PORT_0, DSAF_ROCE_PORT_0},
> -		{DSAF_ROCE_PORT_1, DSAF_ROCE_PORT_0, DSAF_ROCE_PORT_0},
> -		{DSAF_ROCE_PORT_2, DSAF_ROCE_PORT_1, DSAF_ROCE_PORT_0},
> -		{DSAF_ROCE_PORT_3, DSAF_ROCE_PORT_1, DSAF_ROCE_PORT_0},
> -		{DSAF_ROCE_PORT_4, DSAF_ROCE_PORT_2, DSAF_ROCE_PORT_1},
> -		{DSAF_ROCE_PORT_4, DSAF_ROCE_PORT_2, DSAF_ROCE_PORT_1},
> -		{DSAF_ROCE_PORT_5, DSAF_ROCE_PORT_3, DSAF_ROCE_PORT_1},
> -		{DSAF_ROCE_PORT_5, DSAF_ROCE_PORT_3, DSAF_ROCE_PORT_1},
> -	};
> -	static const u32 sl_map[DSAF_ROCE_CREDIT_CHN][DSAF_ROCE_CHAN_MODE_NUM] = {
> -		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_0},
> -		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_1, DSAF_ROCE_SL_1},
> -		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_2},
> -		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_1, DSAF_ROCE_SL_3},
> -		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_0},
> -		{DSAF_ROCE_SL_1, DSAF_ROCE_SL_1, DSAF_ROCE_SL_1},
> -		{DSAF_ROCE_SL_0, DSAF_ROCE_SL_0, DSAF_ROCE_SL_2},
> -		{DSAF_ROCE_SL_1, DSAF_ROCE_SL_1, DSAF_ROCE_SL_3},
> -	};
> -
> -	/* find the platform device corresponding to fwnode */
> -	if (is_of_node(dsaf_fwnode)) {
> -		pdev = of_find_device_by_node(to_of_node(dsaf_fwnode));
> -	} else if (is_acpi_device_node(dsaf_fwnode)) {
> -		pdev = hns_dsaf_find_platform_device(dsaf_fwnode);
> -	} else {
> -		pr_err("fwnode is neither OF or ACPI type\n");
> -		return -EINVAL;
> -	}
> -
> -	/* check if we were a success in fetching pdev */
> -	if (!pdev) {
> -		pr_err("couldn't find platform device for node\n");
> -		return -ENODEV;
> -	}
> -
> -	/* retrieve the dsaf_device from the driver data */
> -	dsaf_dev = dev_get_drvdata(&pdev->dev);
> -	if (!dsaf_dev) {
> -		dev_err(&pdev->dev, "dsaf_dev is NULL\n");
> -		put_device(&pdev->dev);
> -		return -ENODEV;
> -	}
> -
> -	/* now, make sure we are running on compatible SoC */
> -	if (AE_IS_VER1(dsaf_dev->dsaf_ver)) {
> -		dev_err(dsaf_dev->dev, "%s v1 chip doesn't support RoCE!\n",
> -			dsaf_dev->ae_dev.name);
> -		put_device(&pdev->dev);
> -		return -ENODEV;
> -	}
> -
> -	/* do reset or de-reset according to the flag */
> -	if (!dereset) {
> -		/* reset rocee-channels in dsaf and rocee */
> -		dsaf_dev->misc_op->hns_dsaf_srst_chns(dsaf_dev, DSAF_CHNS_MASK,
> -						      false);
> -		dsaf_dev->misc_op->hns_dsaf_roce_srst(dsaf_dev, false);
> -	} else {
> -		/* configure dsaf tx roce correspond to port map and sl map */
> -		mp = dsaf_read_dev(dsaf_dev, DSAF_ROCE_PORT_MAP_REG);
> -		for (i = 0; i < DSAF_ROCE_CREDIT_CHN; i++)
> -			dsaf_set_field(mp, 7 << i * 3, i * 3,
> -				       port_map[i][DSAF_ROCE_6PORT_MODE]);
> -		dsaf_set_field(mp, 3 << i * 3, i * 3, 0);
> -		dsaf_write_dev(dsaf_dev, DSAF_ROCE_PORT_MAP_REG, mp);
> -
> -		sl = dsaf_read_dev(dsaf_dev, DSAF_ROCE_SL_MAP_REG);
> -		for (i = 0; i < DSAF_ROCE_CREDIT_CHN; i++)
> -			dsaf_set_field(sl, 3 << i * 2, i * 2,
> -				       sl_map[i][DSAF_ROCE_6PORT_MODE]);
> -		dsaf_write_dev(dsaf_dev, DSAF_ROCE_SL_MAP_REG, sl);
> -
> -		/* de-reset rocee-channels in dsaf and rocee */
> -		dsaf_dev->misc_op->hns_dsaf_srst_chns(dsaf_dev, DSAF_CHNS_MASK,
> -						      true);
> -		msleep(SRST_TIME_INTERVAL);
> -		dsaf_dev->misc_op->hns_dsaf_roce_srst(dsaf_dev, true);
> -
> -		/* enable dsaf channel rocee credit */
> -		credit = dsaf_read_dev(dsaf_dev, DSAF_SBM_ROCEE_CFG_REG_REG);
> -		dsaf_set_bit(credit, DSAF_SBM_ROCEE_CFG_CRD_EN_B, 0);
> -		dsaf_write_dev(dsaf_dev, DSAF_SBM_ROCEE_CFG_REG_REG, credit);
> -
> -		dsaf_set_bit(credit, DSAF_SBM_ROCEE_CFG_CRD_EN_B, 1);
> -		dsaf_write_dev(dsaf_dev, DSAF_SBM_ROCEE_CFG_REG_REG, credit);
> -	}
> -
> -	put_device(&pdev->dev);
> -
> -	return 0;
> -}
> -EXPORT_SYMBOL(hns_dsaf_roce_reset);
> -
>   MODULE_LICENSE("GPL");
>   MODULE_AUTHOR("Huawei Tech. Co., Ltd.");
>   MODULE_DESCRIPTION("HNS DSAF driver");
> diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
> index 0eb03dff1a8b..c90f41c75500 100644
> --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
> +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
> @@ -463,6 +463,4 @@ int hns_dsaf_clr_mac_mc_port(struct dsaf_device *dsaf_dev,
>   			     u8 mac_id, u8 port_num);
>   int hns_dsaf_wait_pkt_clean(struct dsaf_device *dsaf_dev, int port);
>   
> -int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, bool dereset);
> -
>   #endif /* __HNS_DSAF_MAIN_H__ */

Re: [PATCH net-next v2 4/4] net: hisilicon: hns: Remove unused enums

[Jijie Shao]

on 2024/12/19 0:33, linux@treblig.org wrote:
> From: "Dr. David Alan Gilbert" <linux@treblig.org>
>
> The enums dsaf_roce_port_mode, dsaf_roce_port_num and dsaf_roce_qos_sl
> are unused after the removal of the reset code.
>
> Remove them.

Thanks,

Reviewed-by: Jijie Shao<shaojijie@huawei.com>


>
> Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
> ---
>   .../ethernet/hisilicon/hns/hns_dsaf_main.h    | 23 -------------------
>   1 file changed, 23 deletions(-)
>
> diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
> index bb8267aafc43..653dfbb25d1b 100644
> --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
> +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
> @@ -42,29 +42,6 @@ struct hns_mac_cb;
>   
>   #define HNS_MAX_WAIT_CNT 10000
>   
> -enum dsaf_roce_port_mode {
> -	DSAF_ROCE_6PORT_MODE,
> -	DSAF_ROCE_4PORT_MODE,
> -	DSAF_ROCE_2PORT_MODE,
> -	DSAF_ROCE_CHAN_MODE_NUM,
> -};
> -
> -enum dsaf_roce_port_num {
> -	DSAF_ROCE_PORT_0,
> -	DSAF_ROCE_PORT_1,
> -	DSAF_ROCE_PORT_2,
> -	DSAF_ROCE_PORT_3,
> -	DSAF_ROCE_PORT_4,
> -	DSAF_ROCE_PORT_5,
> -};
> -
> -enum dsaf_roce_qos_sl {
> -	DSAF_ROCE_SL_0,
> -	DSAF_ROCE_SL_1,
> -	DSAF_ROCE_SL_2,
> -	DSAF_ROCE_SL_3,
> -};
> -
>   #define DSAF_STATS_READ(p, offset) (*((u64 *)((u8 *)(p) + (offset))))
>   #define HNS_DSAF_IS_DEBUG(dev) ((dev)->dsaf_mode == DSAF_MODE_DISABLE_SP)
>   

Re: [PATCH net-next v2 0/4] hisilicon hns deadcoding

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Wed, 18 Dec 2024 16:33:37 +0000 you wrote:
> From: "Dr. David Alan Gilbert" <linux@treblig.org>
> 
> Hi,
>   A small set of deadcoding for functions that are not
> called, and a couple of function pointers that they
> called.
> 
> [...]

Here is the summary with links:
  - [net-next,v2,1/4] net: hisilicon: hns: Remove unused hns_dsaf_roce_reset
    https://git.kernel.org/netdev/net-next/c/a574fe14ed1e
  - [net-next,v2,2/4] net: hisilicon: hns: Remove unused hns_rcb_start
    https://git.kernel.org/netdev/net-next/c/0265e9edf210
  - [net-next,v2,3/4] net: hisilicon: hns: Remove reset helpers
    https://git.kernel.org/netdev/net-next/c/0198b459f54e
  - [net-next,v2,4/4] net: hisilicon: hns: Remove unused enums
    https://git.kernel.org/netdev/net-next/c/8973ce189376

You are awesome, thank you!
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