lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-Id: <20221025081747.1884926-1-junxiao.chang@intel.com> Date: Tue, 25 Oct 2022 16:17:47 +0800 From: Junxiao Chang <junxiao.chang@...el.com> To: peppe.cavallaro@...com, alexandre.torgue@...s.st.com, joabreu@...opsys.com, davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, mcoquelin.stm32@...il.com, Joao.Pinto@...opsys.com, netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Cc: junxiao.chang@...el.com, veekhee@...il.com Subject: [PATCH net-next,v2] net: stmmac: remove duplicate dma queue channel macros It doesn't need extra macros for queue 0 & 4. Same macro could be used for all 8 queues. Related queue/channel functions could be combined together. Original macro which has two same parameters is unsafe macro and might have potential side effects. Each MTL RxQ DMA channel mask is 4 bits, so using (0xf << chan) instead of GENMASK(x + 3, x) to avoid unsafe macro. Signed-off-by: Junxiao Chang <junxiao.chang@...el.com> --- v2: combined "if (queue < 4)" and "else" according to Vee Khee's suggestion. v1: https://lore.kernel.org/r/20221025053555.1883731-1-junxiao.chang@intel.com --- drivers/net/ethernet/stmicro/stmmac/dwmac4.h | 4 +--- .../net/ethernet/stmicro/stmmac/dwmac4_core.c | 21 ++++++------------- 2 files changed, 7 insertions(+), 18 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h index 71dad409f78b0..ccd49346d3b30 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h @@ -331,9 +331,7 @@ enum power_event { #define MTL_RXQ_DMA_MAP0 0x00000c30 /* queue 0 to 3 */ #define MTL_RXQ_DMA_MAP1 0x00000c34 /* queue 4 to 7 */ -#define MTL_RXQ_DMA_Q04MDMACH_MASK GENMASK(3, 0) -#define MTL_RXQ_DMA_Q04MDMACH(x) ((x) << 0) -#define MTL_RXQ_DMA_QXMDMACH_MASK(x) GENMASK(11 + (8 * ((x) - 1)), 8 * (x)) +#define MTL_RXQ_DMA_QXMDMACH_MASK(x) (0xf << 8 * (x)) #define MTL_RXQ_DMA_QXMDMACH(chan, q) ((chan) << (8 * (q))) #define MTL_CHAN_BASE_ADDR 0x00000d00 diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c index c25bfecb4a2df..513f6ea335a82 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c @@ -214,26 +214,17 @@ static void dwmac4_map_mtl_dma(struct mac_device_info *hw, u32 queue, u32 chan) void __iomem *ioaddr = hw->pcsr; u32 value; - if (queue < 4) + if (queue < 4) { value = readl(ioaddr + MTL_RXQ_DMA_MAP0); - else - value = readl(ioaddr + MTL_RXQ_DMA_MAP1); - - if (queue == 0 || queue == 4) { - value &= ~MTL_RXQ_DMA_Q04MDMACH_MASK; - value |= MTL_RXQ_DMA_Q04MDMACH(chan); - } else if (queue > 4) { - value &= ~MTL_RXQ_DMA_QXMDMACH_MASK(queue - 4); - value |= MTL_RXQ_DMA_QXMDMACH(chan, queue - 4); - } else { value &= ~MTL_RXQ_DMA_QXMDMACH_MASK(queue); value |= MTL_RXQ_DMA_QXMDMACH(chan, queue); - } - - if (queue < 4) writel(value, ioaddr + MTL_RXQ_DMA_MAP0); - else + } else { + value = readl(ioaddr + MTL_RXQ_DMA_MAP1); + value &= ~MTL_RXQ_DMA_QXMDMACH_MASK(queue - 4); + value |= MTL_RXQ_DMA_QXMDMACH(chan, queue - 4); writel(value, ioaddr + MTL_RXQ_DMA_MAP1); + } } static void dwmac4_config_cbs(struct mac_device_info *hw, -- 2.25.1
Powered by blists - more mailing lists