Hello everyone,
This is my first patch submission so hopefully everything goes well. :-)
By swithing from our __raw_read and __raw_write functions to ioread32 and iowrite32,
benchmarks on my desk with iperf went from 11MBps to 18.1MBps using the AHB bus
on an EnGenius ECB3500 running OpenWRT.
Signed-off-by: Jonathan Bither <[email protected]>
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
@@ -1656,12 +1656,12 @@
static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
{
- return __raw_readl(ath5k_ahb_reg(ah, reg));
+ return ioread32(ath5k_ahb_reg(ah, reg));
}
static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
{
- __raw_writel(val, ath5k_ahb_reg(ah, reg));
+ iowrite32(val, ath5k_ahb_reg(ah, reg));
}
#else
--- a/drivers/net/wireless/ath/ath5k/ahb.c
+++ b/drivers/net/wireless/ath/ath5k/ahb.c
@@ -140,23 +140,23 @@
if (bcfg->devid >= AR5K_SREV_AR2315_R6) {
/* Enable WMAC AHB arbitration */
- reg = __raw_readl((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
+ reg = ioread32((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
reg |= AR5K_AR2315_AHB_ARB_CTL_WLAN;
- __raw_writel(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
+ iowrite32(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
/* Enable global WMAC swapping */
- reg = __raw_readl((void __iomem *) AR5K_AR2315_BYTESWAP);
+ reg = ioread32((void __iomem *) AR5K_AR2315_BYTESWAP);
reg |= AR5K_AR2315_BYTESWAP_WMAC;
- __raw_writel(reg, (void __iomem *) AR5K_AR2315_BYTESWAP);
+ iowrite32(reg, (void __iomem *) AR5K_AR2315_BYTESWAP);
} else {
/* Enable WMAC DMA access (assuming 5312 or 231x*/
/* TODO: check other platforms */
- reg = __raw_readl((void __iomem *) AR5K_AR5312_ENABLE);
+ reg = ioread32((void __iomem *) AR5K_AR5312_ENABLE);
if (to_platform_device(ah->dev)->id == 0)
reg |= AR5K_AR5312_ENABLE_WLAN0;
else
reg |= AR5K_AR5312_ENABLE_WLAN1;
- __raw_writel(reg, (void __iomem *) AR5K_AR5312_ENABLE);
+ iowrite32(reg, (void __iomem *) AR5K_AR5312_ENABLE);
/*
* On a dual-band AR5312, the multiband radio is only
@@ -203,17 +203,17 @@
if (bcfg->devid >= AR5K_SREV_AR2315_R6) {
/* Disable WMAC AHB arbitration */
- reg = __raw_readl((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
+ reg = ioread32((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
reg &= ~AR5K_AR2315_AHB_ARB_CTL_WLAN;
- __raw_writel(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
+ iowrite32(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
} else {
/*Stop DMA access */
- reg = __raw_readl((void __iomem *) AR5K_AR5312_ENABLE);
+ reg = ioread32((void __iomem *) AR5K_AR5312_ENABLE);
if (to_platform_device(ah->dev)->id == 0)
reg &= ~AR5K_AR5312_ENABLE_WLAN0;
else
reg &= ~AR5K_AR5312_ENABLE_WLAN1;
- __raw_writel(reg, (void __iomem *) AR5K_AR5312_ENABLE);
+ iowrite32(reg, (void __iomem *) AR5K_AR5312_ENABLE);
}
ath5k_deinit_ah(ah);
--- a/drivers/net/wireless/ath/ath5k/reset.c
+++ b/drivers/net/wireless/ath/ath5k/reset.c
@@ -473,14 +473,14 @@
}
/* Put BB/MAC into reset */
- regval = __raw_readl(reg);
- __raw_writel(regval | val, reg);
- regval = __raw_readl(reg);
+ regval = ioread32(reg);
+ iowrite32(regval | val, reg);
+ regval = ioread32(reg);
usleep_range(100, 150);
/* Bring BB/MAC out of reset */
- __raw_writel(regval & ~val, reg);
- regval = __raw_readl(reg);
+ iowrite32(regval & ~val, reg);
+ regval = ioread32(reg);
/*
* Reset configuration register (for hw byte-swap). Note that this