From 388c4bb4dc1fc861dff425d37b0d6438f0e694bb Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Mon, 23 Jul 2018 21:10:02 +0300 Subject: [PATCH 1/5] sh_eth: uninline sh_eth_tsu_get_offset() sh_eth_tsu_get_offset() is called several times by the driver, remove *inline* and move that function from the header to the driver itself to let gcc decide whether to expand it inline or not... Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 5 +++++ drivers/net/ethernet/renesas/sh_eth.h | 6 ------ 2 files changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 314aeb5dd9214..1f8d5a08bdce6 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -439,6 +439,11 @@ static void sh_eth_modify(struct net_device *ndev, int enum_index, u32 clear, enum_index); } +static void *sh_eth_tsu_get_offset(struct sh_eth_private *mdp, int enum_index) +{ + return mdp->tsu_addr + mdp->reg_offset[enum_index]; +} + static void sh_eth_tsu_write(struct sh_eth_private *mdp, u32 data, int enum_index) { diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h index 140ad2c570950..f94be99cf4002 100644 --- a/drivers/net/ethernet/renesas/sh_eth.h +++ b/drivers/net/ethernet/renesas/sh_eth.h @@ -558,10 +558,4 @@ struct sh_eth_private { unsigned wol_enabled:1; }; -static inline void *sh_eth_tsu_get_offset(struct sh_eth_private *mdp, - int enum_index) -{ - return mdp->tsu_addr + mdp->reg_offset[enum_index]; -} - #endif /* #ifndef __SH_ETH_H__ */ From 41414f0a8568d1f395d823bc65e68ee0805d794f Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Mon, 23 Jul 2018 21:11:19 +0300 Subject: [PATCH 2/5] sh_eth: make sh_eth_tsu_get_offset() match its name sh_eth_tsu_get_offset(), despite its name, returns a TSU register's address, not its offset. Make this function match its name and return a register's offset from the TSU registers base address instead. Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 1f8d5a08bdce6..b813ef4ea51af 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -439,9 +439,9 @@ static void sh_eth_modify(struct net_device *ndev, int enum_index, u32 clear, enum_index); } -static void *sh_eth_tsu_get_offset(struct sh_eth_private *mdp, int enum_index) +static u16 sh_eth_tsu_get_offset(struct sh_eth_private *mdp, int enum_index) { - return mdp->tsu_addr + mdp->reg_offset[enum_index]; + return mdp->reg_offset[enum_index]; } static void sh_eth_tsu_write(struct sh_eth_private *mdp, u32 data, @@ -2712,12 +2712,12 @@ static void sh_eth_tsu_read_entry(void *reg, u8 *addr) static int sh_eth_tsu_find_entry(struct net_device *ndev, const u8 *addr) { struct sh_eth_private *mdp = netdev_priv(ndev); - void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); + u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); int i; u8 c_addr[ETH_ALEN]; for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) { - sh_eth_tsu_read_entry(reg_offset, c_addr); + sh_eth_tsu_read_entry(mdp->tsu_addr + reg_offset, c_addr); if (ether_addr_equal(addr, c_addr)) return i; } @@ -2739,7 +2739,7 @@ static int sh_eth_tsu_disable_cam_entry_table(struct net_device *ndev, int entry) { struct sh_eth_private *mdp = netdev_priv(ndev); - void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); + u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); int ret; u8 blank[ETH_ALEN]; @@ -2747,7 +2747,9 @@ static int sh_eth_tsu_disable_cam_entry_table(struct net_device *ndev, ~(1 << (31 - entry)), TSU_TEN); memset(blank, 0, sizeof(blank)); - ret = sh_eth_tsu_write_entry(ndev, reg_offset + entry * 8, blank); + ret = sh_eth_tsu_write_entry(ndev, + mdp->tsu_addr + reg_offset + entry * 8, + blank); if (ret < 0) return ret; return 0; @@ -2756,7 +2758,7 @@ static int sh_eth_tsu_disable_cam_entry_table(struct net_device *ndev, static int sh_eth_tsu_add_entry(struct net_device *ndev, const u8 *addr) { struct sh_eth_private *mdp = netdev_priv(ndev); - void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); + u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); int i, ret; if (!mdp->cd->tsu) @@ -2768,7 +2770,9 @@ static int sh_eth_tsu_add_entry(struct net_device *ndev, const u8 *addr) i = sh_eth_tsu_find_empty(ndev); if (i < 0) return -ENOMEM; - ret = sh_eth_tsu_write_entry(ndev, reg_offset + i * 8, addr); + ret = sh_eth_tsu_write_entry(ndev, + mdp->tsu_addr + reg_offset + i * 8, + addr); if (ret < 0) return ret; @@ -2830,15 +2834,15 @@ static int sh_eth_tsu_purge_all(struct net_device *ndev) static void sh_eth_tsu_purge_mcast(struct net_device *ndev) { struct sh_eth_private *mdp = netdev_priv(ndev); + u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); u8 addr[ETH_ALEN]; - void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); int i; if (!mdp->cd->tsu) return; for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) { - sh_eth_tsu_read_entry(reg_offset, addr); + sh_eth_tsu_read_entry(mdp->tsu_addr + reg_offset, addr); if (is_multicast_ether_addr(addr)) sh_eth_tsu_del_entry(ndev, addr); } From ecbecb0a90fbc318163dd1747bd325e08aee4b12 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Mon, 23 Jul 2018 21:12:38 +0300 Subject: [PATCH 3/5] sh_eth: call sh_eth_tsu_get_offset() from TSU register accessors With sh_eth_tsu_get_offset() now actually returning TSU register's offset, we can at last use it in sh_eth_tsu_{read|write}(). Somehow this saves 248 bytes of object code with AArch64 gcc 4.8.5... :-) Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index b813ef4ea51af..bf002c2b5d791 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -447,7 +447,7 @@ static u16 sh_eth_tsu_get_offset(struct sh_eth_private *mdp, int enum_index) static void sh_eth_tsu_write(struct sh_eth_private *mdp, u32 data, int enum_index) { - u16 offset = mdp->reg_offset[enum_index]; + u16 offset = sh_eth_tsu_get_offset(mdp, enum_index); if (WARN_ON(offset == SH_ETH_OFFSET_INVALID)) return; @@ -457,7 +457,7 @@ static void sh_eth_tsu_write(struct sh_eth_private *mdp, u32 data, static u32 sh_eth_tsu_read(struct sh_eth_private *mdp, int enum_index) { - u16 offset = mdp->reg_offset[enum_index]; + u16 offset = sh_eth_tsu_get_offset(mdp, enum_index); if (WARN_ON(offset == SH_ETH_OFFSET_INVALID)) return ~0U; From 7a54c867bad601406d71f375362048d8ccfb5fae Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Mon, 23 Jul 2018 21:14:38 +0300 Subject: [PATCH 4/5] sh_eth: make sh_eth_tsu_write_entry() take 'offset' parameter We can add the TSU register base address to a TSU register offset right in sh_eth_tsu_write_entry(), no need to do it in its callers... Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index bf002c2b5d791..b3434109e5e15 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -2676,18 +2676,19 @@ static int sh_eth_tsu_busy(struct net_device *ndev) return 0; } -static int sh_eth_tsu_write_entry(struct net_device *ndev, void *reg, +static int sh_eth_tsu_write_entry(struct net_device *ndev, u16 offset, const u8 *addr) { + struct sh_eth_private *mdp = netdev_priv(ndev); u32 val; val = addr[0] << 24 | addr[1] << 16 | addr[2] << 8 | addr[3]; - iowrite32(val, reg); + iowrite32(val, mdp->tsu_addr + offset); if (sh_eth_tsu_busy(ndev) < 0) return -EBUSY; val = addr[4] << 8 | addr[5]; - iowrite32(val, reg + 4); + iowrite32(val, mdp->tsu_addr + offset + 4); if (sh_eth_tsu_busy(ndev) < 0) return -EBUSY; @@ -2747,9 +2748,7 @@ static int sh_eth_tsu_disable_cam_entry_table(struct net_device *ndev, ~(1 << (31 - entry)), TSU_TEN); memset(blank, 0, sizeof(blank)); - ret = sh_eth_tsu_write_entry(ndev, - mdp->tsu_addr + reg_offset + entry * 8, - blank); + ret = sh_eth_tsu_write_entry(ndev, reg_offset + entry * 8, blank); if (ret < 0) return ret; return 0; @@ -2770,9 +2769,7 @@ static int sh_eth_tsu_add_entry(struct net_device *ndev, const u8 *addr) i = sh_eth_tsu_find_empty(ndev); if (i < 0) return -ENOMEM; - ret = sh_eth_tsu_write_entry(ndev, - mdp->tsu_addr + reg_offset + i * 8, - addr); + ret = sh_eth_tsu_write_entry(ndev, reg_offset + i * 8, addr); if (ret < 0) return ret; From 51459d4c76e551d006a7e22ce54ba4039480cd19 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Mon, 23 Jul 2018 21:15:47 +0300 Subject: [PATCH 5/5] sh_eth: make sh_eth_tsu_{read|write}_entry() prototypes symmetric sh_eth_tsu_read_entry() is still asymmetric with sh_eth_tsu_write_entry() WRT their prototypes -- make them symmetric by passing to the former a TSU register offset instead of its address and also adding the (now necessary) 'ndev' parameter... Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index b3434109e5e15..5573199c4536c 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -2695,16 +2695,17 @@ static int sh_eth_tsu_write_entry(struct net_device *ndev, u16 offset, return 0; } -static void sh_eth_tsu_read_entry(void *reg, u8 *addr) +static void sh_eth_tsu_read_entry(struct net_device *ndev, u16 offset, u8 *addr) { + struct sh_eth_private *mdp = netdev_priv(ndev); u32 val; - val = ioread32(reg); + val = ioread32(mdp->tsu_addr + offset); addr[0] = (val >> 24) & 0xff; addr[1] = (val >> 16) & 0xff; addr[2] = (val >> 8) & 0xff; addr[3] = val & 0xff; - val = ioread32(reg + 4); + val = ioread32(mdp->tsu_addr + offset + 4); addr[4] = (val >> 8) & 0xff; addr[5] = val & 0xff; } @@ -2718,7 +2719,7 @@ static int sh_eth_tsu_find_entry(struct net_device *ndev, const u8 *addr) u8 c_addr[ETH_ALEN]; for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) { - sh_eth_tsu_read_entry(mdp->tsu_addr + reg_offset, c_addr); + sh_eth_tsu_read_entry(ndev, reg_offset, c_addr); if (ether_addr_equal(addr, c_addr)) return i; } @@ -2839,7 +2840,7 @@ static void sh_eth_tsu_purge_mcast(struct net_device *ndev) return; for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) { - sh_eth_tsu_read_entry(mdp->tsu_addr + reg_offset, addr); + sh_eth_tsu_read_entry(ndev, reg_offset, addr); if (is_multicast_ether_addr(addr)) sh_eth_tsu_del_entry(ndev, addr); }