diff options
| -rw-r--r-- | drivers/net/smsc911x.c | 158 | ||||
| -rw-r--r-- | drivers/net/smsc911x.h | 1 | ||||
| -rw-r--r-- | include/linux/smsc911x.h | 5 |
3 files changed, 84 insertions, 80 deletions
diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c index fe51788..4b8ff84 100644 --- a/drivers/net/smsc911x.c +++ b/drivers/net/smsc911x.c @@ -77,19 +77,16 @@ struct smsc911x_data { unsigned int generation; /* device configuration (copied from platform_data during probe) */ - unsigned int irq_polarity; - unsigned int irq_type; - phy_interface_t phy_interface; + struct smsc911x_platform_config config; /* This needs to be acquired before calling any of below: * smsc911x_mac_read(), smsc911x_mac_write() */ spinlock_t mac_lock; -#if (!SMSC_CAN_USE_32BIT) - /* spinlock to ensure 16-bit accesses are serialised */ + /* spinlock to ensure 16-bit accesses are serialised. + * unused with a 32-bit bus */ spinlock_t dev_lock; -#endif struct phy_device *phy_dev; struct mii_bus *mii_bus; @@ -121,70 +118,56 @@ struct smsc911x_data { unsigned int hashlo; }; -#if SMSC_CAN_USE_32BIT - -static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg) -{ - return readl(pdata->ioaddr + reg); -} - -static inline void smsc911x_reg_write(struct smsc911x_data *pdata, u32 reg, - u32 val) -{ - writel(val, pdata->ioaddr + reg); -} - -/* Writes a packet to the TX_DATA_FIFO */ -static inline void -smsc911x_tx_writefifo(struct smsc911x_data *pdata, unsigned int *buf, - unsigned int wordcount) -{ - writesl(pdata->ioaddr + TX_DATA_FIFO, buf, wordcount); -} - -/* Reads a packet out of the RX_DATA_FIFO */ -static inline void -smsc911x_rx_readfifo(struct smsc911x_data *pdata, unsigned int *buf, - unsigned int wordcount) -{ - readsl(pdata->ioaddr + RX_DATA_FIFO, buf, wordcount); -} - -#else /* SMSC_CAN_USE_32BIT */ - -/* These 16-bit access functions are significantly slower, due to the locking +/* The 16-bit access functions are significantly slower, due to the locking * necessary. If your bus hardware can be configured to do this for you * (in response to a single 32-bit operation from software), you should use * the 32-bit access functions instead. */ static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg) { - unsigned long flags; - u32 data; - - /* these two 16-bit reads must be performed consecutively, so must - * not be interrupted by our own ISR (which would start another - * read operation) */ - spin_lock_irqsave(&pdata->dev_lock, flags); - data = ((readw(pdata->ioaddr + reg) & 0xFFFF) | - ((readw(pdata->ioaddr + reg + 2) & 0xFFFF) << 16)); - spin_unlock_irqrestore(&pdata->dev_lock, flags); + if (pdata->config.flags & SMSC911X_USE_32BIT) + return readl(pdata->ioaddr + reg); + + if (pdata->config.flags & SMSC911X_USE_16BIT) { + u32 data; + unsigned long flags; + + /* these two 16-bit reads must be performed consecutively, so + * must not be interrupted by our own ISR (which would start + * another read operation) */ + spin_lock_irqsave(&pdata->dev_lock, flags); + data = ((readw(pdata->ioaddr + reg) & 0xFFFF) | + ((readw(pdata->ioaddr + reg + 2) & 0xFFFF) << 16)); + spin_unlock_irqrestore(&pdata->dev_lock, flags); + + return data; + } - return data; + BUG(); } static inline void smsc911x_reg_write(struct smsc911x_data *pdata, u32 reg, u32 val) { - unsigned long flags; + if (pdata->config.flags & SMSC911X_USE_32BIT) { + writel(val, pdata->ioaddr + reg); + return; + } + + if (pdata->config.flags & SMSC911X_USE_16BIT) { + unsigned long flags; + + /* these two 16-bit writes must be performed consecutively, so + * must not be interrupted by our own ISR (which would start + * another read operation) */ + spin_lock_irqsave(&pdata->dev_lock, flags); + writew(val & 0xFFFF, pdata->ioaddr + reg); + writew((val >> 16) & 0xFFFF, pdata->ioaddr + reg + 2); + spin_unlock_irqrestore(&pdata->dev_lock, flags); + return; + } - /* these two 16-bit writes must be performed consecutively, so must - * not be interrupted by our own ISR (which would start another - * read operation) */ - spin_lock_irqsave(&pdata->dev_lock, flags); - writew(val & 0xFFFF, pdata->ioaddr + reg); - writew((val >> 16) & 0xFFFF, pdata->ioaddr + reg + 2); - spin_unlock_irqrestore(&pdata->dev_lock, flags); + BUG(); } /* Writes a packet to the TX_DATA_FIFO */ @@ -192,8 +175,18 @@ static inline void smsc911x_tx_writefifo(struct smsc911x_data *pdata, unsigned int *buf, unsigned int wordcount) { - while (wordcount--) - smsc911x_reg_write(pdata, TX_DATA_FIFO, *buf++); + if (pdata->config.flags & SMSC911X_USE_32BIT) { + writesl(pdata->ioaddr + TX_DATA_FIFO, buf, wordcount); + return; + } + + if (pdata->config.flags & SMSC911X_USE_16BIT) { + while (wordcount--) + smsc911x_reg_write(pdata, TX_DATA_FIFO, *buf++); + return; + } + + BUG(); } /* Reads a packet out of the RX_DATA_FIFO */ @@ -201,11 +194,19 @@ static inline void smsc911x_rx_readfifo(struct smsc911x_data *pdata, unsigned int *buf, unsigned int wordcount) { - while (wordcount--) - *buf++ = smsc911x_reg_read(pdata, RX_DATA_FIFO); -} + if (pdata->config.flags & SMSC911X_USE_32BIT) { + readsl(pdata->ioaddr + RX_DATA_FIFO, buf, wordcount); + return; + } -#endif /* SMSC_CAN_USE_32BIT */ + if (pdata->config.flags & SMSC911X_USE_16BIT) { + while (wordcount--) + *buf++ = smsc911x_reg_read(pdata, RX_DATA_FIFO); + return; + } + + BUG(); +} /* waits for MAC not busy, with timeout. Only called by smsc911x_mac_read * and smsc911x_mac_write, so assumes mac_lock is held */ @@ -790,7 +791,7 @@ static int smsc911x_mii_probe(struct net_device *dev) } phydev = phy_connect(dev, phydev->dev.bus_id, - &smsc911x_phy_adjust_link, 0, pdata->phy_interface); + &smsc911x_phy_adjust_link, 0, pdata->config.phy_interface); if (IS_ERR(phydev)) { pr_err("%s: Could not attach to PHY\n", dev->name); @@ -1205,14 +1206,14 @@ static int smsc911x_open(struct net_device *dev) /* Set interrupt deassertion to 100uS */ intcfg = ((10 << 24) | INT_CFG_IRQ_EN_); - if (pdata->irq_polarity) { + if (pdata->config.irq_polarity) { SMSC_TRACE(IFUP, "irq polarity: active high"); intcfg |= INT_CFG_IRQ_POL_; } else { SMSC_TRACE(IFUP, "irq polarity: active low"); } - if (pdata->irq_type) { + if (pdata->config.irq_type) { SMSC_TRACE(IFUP, "irq type: push-pull"); intcfg |= INT_CFG_IRQ_TYPE_; } else { @@ -1767,9 +1768,7 @@ static int __devinit smsc911x_init(struct net_device *dev) SMSC_TRACE(PROBE, "IRQ: %d", dev->irq); SMSC_TRACE(PROBE, "PHY will be autodetected."); -#if (!SMSC_CAN_USE_32BIT) spin_lock_init(&pdata->dev_lock); -#endif if (pdata->ioaddr == 0) { SMSC_WARNING(PROBE, "pdata->ioaddr: 0x00000000"); @@ -1910,6 +1909,7 @@ static int __devinit smsc911x_drv_probe(struct platform_device *pdev) { struct net_device *dev; struct smsc911x_data *pdata; + struct smsc911x_platform_config *config = pdev->dev.platform_data; struct resource *res; unsigned int intcfg = 0; int res_size; @@ -1918,6 +1918,13 @@ static int __devinit smsc911x_drv_probe(struct platform_device *pdev) pr_info("%s: Driver version %s.\n", SMSC_CHIPNAME, SMSC_DRV_VERSION); + /* platform data specifies irq & dynamic bus configuration */ + if (!pdev->dev.platform_data) { + pr_warning("%s: platform_data not provided\n", SMSC_CHIPNAME); + retval = -ENODEV; + goto out_0; + } + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smsc911x-memory"); if (!res) @@ -1949,15 +1956,8 @@ static int __devinit smsc911x_drv_probe(struct platform_device *pdev) dev->irq = platform_get_irq(pdev, 0); pdata->ioaddr = ioremap_nocache(res->start, res_size); - /* copy config parameters across if present, otherwise pdata - * defaults to zeros */ - if (pdev->dev.platform_data) { - struct smsc911x_platform_config *config = - pdev->dev.platform_data; - pdata->irq_polarity = config->irq_polarity; - pdata->irq_type = config->irq_type; - pdata->phy_interface = config->phy_interface; - } + /* copy config parameters across to pdata */ + memcpy(&pdata->config, config, sizeof(pdata->config)); pdata->dev = dev; pdata->msg_enable = ((1 << debug) - 1); @@ -1974,10 +1974,10 @@ static int __devinit smsc911x_drv_probe(struct platform_device *pdev) goto out_unmap_io_3; /* configure irq polarity and type before connecting isr */ - if (pdata->irq_polarity == SMSC911X_IRQ_POLARITY_ACTIVE_HIGH) + if (pdata->config.irq_polarity == SMSC911X_IRQ_POLARITY_ACTIVE_HIGH) intcfg |= INT_CFG_IRQ_POL_; - if (pdata->irq_type == SMSC911X_IRQ_TYPE_PUSH_PULL) + if (pdata->config.irq_type == SMSC911X_IRQ_TYPE_PUSH_PULL) intcfg |= INT_CFG_IRQ_TYPE_; smsc911x_reg_write(pdata, INT_CFG, intcfg); diff --git a/drivers/net/smsc911x.h b/drivers/net/smsc911x.h index feb36de..f818cf0 100644 --- a/drivers/net/smsc911x.h +++ b/drivers/net/smsc911x.h @@ -21,7 +21,6 @@ #ifndef __SMSC911X_H__ #define __SMSC911X_H__ -#define SMSC_CAN_USE_32BIT 1 #define TX_FIFO_LOW_THRESHOLD ((u32)1600) #define SMSC911X_EEPROM_SIZE ((u32)7) #define USE_DEBUG 0 diff --git a/include/linux/smsc911x.h b/include/linux/smsc911x.h index 47c4ffd..1cbf031 100644 --- a/include/linux/smsc911x.h +++ b/include/linux/smsc911x.h @@ -28,6 +28,7 @@ struct smsc911x_platform_config { unsigned int irq_polarity; unsigned int irq_type; + unsigned int flags; phy_interface_t phy_interface; }; @@ -39,4 +40,8 @@ struct smsc911x_platform_config { #define SMSC911X_IRQ_TYPE_OPEN_DRAIN 0 #define SMSC911X_IRQ_TYPE_PUSH_PULL 1 +/* Constants for flags */ +#define SMSC911X_USE_16BIT (BIT(0)) +#define SMSC911X_USE_32BIT (BIT(1)) + #endif /* __LINUX_SMSC911X_H__ */ |
