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[PATCH] Gianfar update and sysfs support
This seems to have gotten lost, so I'll resend. Signed-off-by: Andy Fleming <afleming@freescale.com> * Added sysfs support to gianfar for modifying FIFO and stashing parameters * Updated driver to support 10 Mbit, full duplex operation * Improved comments throughout * Cleaned up and optimized offloading code * Fixed a bug where rx buffers were being improperly mapped and unmapped * (only manifested if cache-coherency was off) * Added support for using the eTSEC exact-match MAC registers * Bumped the version to 1.3 * Added support for distinguishing between reduced 100 and 10 Mbit modes * Modified default coalescing values to lower latency * Added documentation Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Andy Fleming
Jeff Garzik
parent
fed5eccdcf
commit
7f7f53168d
7 changed files with 579 additions and 112 deletions
72
Documentation/networking/gianfar.txt
Normal file
72
Documentation/networking/gianfar.txt
Normal file
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@ -0,0 +1,72 @@
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The Gianfar Ethernet Driver
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Sysfs File description
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Author: Andy Fleming <afleming@freescale.com>
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Updated: 2005-07-28
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SYSFS
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Several of the features of the gianfar driver are controlled
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through sysfs files. These are:
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bd_stash:
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To stash RX Buffer Descriptors in the L2, echo 'on' or '1' to
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bd_stash, echo 'off' or '0' to disable
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rx_stash_len:
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To stash the first n bytes of the packet in L2, echo the number
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of bytes to buf_stash_len. echo 0 to disable.
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WARNING: You could really screw these up if you set them too low or high!
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fifo_threshold:
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To change the number of bytes the controller needs in the
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fifo before it starts transmission, echo the number of bytes to
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fifo_thresh. Range should be 0-511.
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fifo_starve:
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When the FIFO has less than this many bytes during a transmit, it
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enters starve mode, and increases the priority of TX memory
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transactions. To change, echo the number of bytes to
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fifo_starve. Range should be 0-511.
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fifo_starve_off:
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Once in starve mode, the FIFO remains there until it has this
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many bytes. To change, echo the number of bytes to
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fifo_starve_off. Range should be 0-511.
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CHECKSUM OFFLOADING
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The eTSEC controller (first included in parts from late 2005 like
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the 8548) has the ability to perform TCP, UDP, and IP checksums
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in hardware. The Linux kernel only offloads the TCP and UDP
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checksums (and always performs the pseudo header checksums), so
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the driver only supports checksumming for TCP/IP and UDP/IP
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packets. Use ethtool to enable or disable this feature for RX
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and TX.
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VLAN
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In order to use VLAN, please consult Linux documentation on
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configuring VLANs. The gianfar driver supports hardware insertion and
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extraction of VLAN headers, but not filtering. Filtering will be
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done by the kernel.
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MULTICASTING
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The gianfar driver supports using the group hash table on the
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TSEC (and the extended hash table on the eTSEC) for multicast
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filtering. On the eTSEC, the exact-match MAC registers are used
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before the hash tables. See Linux documentation on how to join
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multicast groups.
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PADDING
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The gianfar driver supports padding received frames with 2 bytes
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to align the IP header to a 16-byte boundary, when supported by
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hardware.
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ETHTOOL
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The gianfar driver supports the use of ethtool for many
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configuration options. You must run ethtool only on currently
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open interfaces. See ethtool documentation for details.
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@ -13,7 +13,10 @@ obj-$(CONFIG_CHELSIO_T1) += chelsio/
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obj-$(CONFIG_BONDING) += bonding/
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obj-$(CONFIG_GIANFAR) += gianfar_driver.o
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gianfar_driver-objs := gianfar.o gianfar_ethtool.o gianfar_mii.o
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gianfar_driver-objs := gianfar.o \
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gianfar_ethtool.o \
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gianfar_mii.o \
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gianfar_sysfs.o
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#
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# link order important here
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@ -2,7 +2,8 @@
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* drivers/net/gianfar.c
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*
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* Gianfar Ethernet Driver
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* Driver for FEC on MPC8540 and TSEC on MPC8540/MPC8560
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* This driver is designed for the non-CPM ethernet controllers
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* on the 85xx and 83xx family of integrated processors
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* Based on 8260_io/fcc_enet.c
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*
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* Author: Andy Fleming
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@ -22,8 +23,6 @@
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* B-V +1.62
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*
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* Theory of operation
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* This driver is designed for the non-CPM ethernet controllers
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* on the 85xx and 83xx family of integrated processors
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*
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* The driver is initialized through platform_device. Structures which
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* define the configuration needed by the board are defined in a
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@ -110,7 +109,7 @@
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#endif
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const char gfar_driver_name[] = "Gianfar Ethernet";
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const char gfar_driver_version[] = "1.2";
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const char gfar_driver_version[] = "1.3";
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static int gfar_enet_open(struct net_device *dev);
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static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev);
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@ -139,6 +138,10 @@ static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, int l
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static void gfar_vlan_rx_register(struct net_device *netdev,
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struct vlan_group *grp);
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static void gfar_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
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void gfar_halt(struct net_device *dev);
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void gfar_start(struct net_device *dev);
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static void gfar_clear_exact_match(struct net_device *dev);
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static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr);
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extern struct ethtool_ops gfar_ethtool_ops;
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@ -146,12 +149,10 @@ MODULE_AUTHOR("Freescale Semiconductor, Inc");
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MODULE_DESCRIPTION("Gianfar Ethernet Driver");
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MODULE_LICENSE("GPL");
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int gfar_uses_fcb(struct gfar_private *priv)
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/* Returns 1 if incoming frames use an FCB */
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static inline int gfar_uses_fcb(struct gfar_private *priv)
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{
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if (priv->vlan_enable || priv->rx_csum_enable)
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return 1;
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else
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return 0;
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return (priv->vlan_enable || priv->rx_csum_enable);
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}
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/* Set up the ethernet device structure, private data,
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@ -320,15 +321,10 @@ static int gfar_probe(struct platform_device *pdev)
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else
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priv->padding = 0;
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dev->hard_header_len += priv->padding;
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if (dev->features & NETIF_F_IP_CSUM)
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dev->hard_header_len += GMAC_FCB_LEN;
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priv->rx_buffer_size = DEFAULT_RX_BUFFER_SIZE;
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#ifdef CONFIG_GFAR_BUFSTASH
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priv->rx_stash_size = STASH_LENGTH;
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#endif
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priv->tx_ring_size = DEFAULT_TX_RING_SIZE;
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priv->rx_ring_size = DEFAULT_RX_RING_SIZE;
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@ -350,6 +346,9 @@ static int gfar_probe(struct platform_device *pdev)
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goto register_fail;
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}
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/* Create all the sysfs files */
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gfar_init_sysfs(dev);
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/* Print out the device info */
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printk(KERN_INFO DEVICE_NAME, dev->name);
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for (idx = 0; idx < 6; idx++)
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@ -357,8 +356,7 @@ static int gfar_probe(struct platform_device *pdev)
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printk("\n");
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/* Even more device info helps when determining which kernel */
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/* provided which set of benchmarks. Since this is global for all */
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/* devices, we only print it once */
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/* provided which set of benchmarks. */
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#ifdef CONFIG_GFAR_NAPI
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printk(KERN_INFO "%s: Running with NAPI enabled\n", dev->name);
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#else
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@ -463,19 +461,9 @@ static void init_registers(struct net_device *dev)
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/* Initialize the max receive buffer length */
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gfar_write(&priv->regs->mrblr, priv->rx_buffer_size);
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#ifdef CONFIG_GFAR_BUFSTASH
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/* If we are stashing buffers, we need to set the
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* extraction length to the size of the buffer */
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gfar_write(&priv->regs->attreli, priv->rx_stash_size << 16);
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#endif
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/* Initialize the Minimum Frame Length Register */
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gfar_write(&priv->regs->minflr, MINFLR_INIT_SETTINGS);
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/* Setup Attributes so that snooping is on for rx */
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gfar_write(&priv->regs->attr, ATTR_INIT_SETTINGS);
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gfar_write(&priv->regs->attreli, ATTRELI_INIT_SETTINGS);
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/* Assign the TBI an address which won't conflict with the PHYs */
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gfar_write(&priv->regs->tbipa, TBIPA_VALUE);
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}
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@ -577,8 +565,7 @@ static void free_skb_resources(struct gfar_private *priv)
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for (i = 0; i < priv->rx_ring_size; i++) {
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if (priv->rx_skbuff[i]) {
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dma_unmap_single(NULL, rxbdp->bufPtr,
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priv->rx_buffer_size
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+ RXBUF_ALIGNMENT,
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priv->rx_buffer_size,
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DMA_FROM_DEVICE);
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dev_kfree_skb_any(priv->rx_skbuff[i]);
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@ -636,6 +623,7 @@ int startup_gfar(struct net_device *dev)
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struct gfar *regs = priv->regs;
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int err = 0;
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u32 rctrl = 0;
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u32 attrs = 0;
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gfar_write(®s->imask, IMASK_INIT_CLEAR);
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@ -795,18 +783,50 @@ int startup_gfar(struct net_device *dev)
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if (priv->rx_csum_enable)
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rctrl |= RCTRL_CHECKSUMMING;
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if (priv->extended_hash)
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if (priv->extended_hash) {
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rctrl |= RCTRL_EXTHASH;
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gfar_clear_exact_match(dev);
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rctrl |= RCTRL_EMEN;
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}
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if (priv->vlan_enable)
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rctrl |= RCTRL_VLAN;
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if (priv->padding) {
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rctrl &= ~RCTRL_PAL_MASK;
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rctrl |= RCTRL_PADDING(priv->padding);
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}
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/* Init rctrl based on our settings */
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gfar_write(&priv->regs->rctrl, rctrl);
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if (dev->features & NETIF_F_IP_CSUM)
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gfar_write(&priv->regs->tctrl, TCTRL_INIT_CSUM);
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/* Set the extraction length and index */
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attrs = ATTRELI_EL(priv->rx_stash_size) |
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ATTRELI_EI(priv->rx_stash_index);
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gfar_write(&priv->regs->attreli, attrs);
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/* Start with defaults, and add stashing or locking
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* depending on the approprate variables */
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attrs = ATTR_INIT_SETTINGS;
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if (priv->bd_stash_en)
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attrs |= ATTR_BDSTASH;
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if (priv->rx_stash_size != 0)
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attrs |= ATTR_BUFSTASH;
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gfar_write(&priv->regs->attr, attrs);
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gfar_write(&priv->regs->fifo_tx_thr, priv->fifo_threshold);
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gfar_write(&priv->regs->fifo_tx_starve, priv->fifo_starve);
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gfar_write(&priv->regs->fifo_tx_starve_shutoff, priv->fifo_starve_off);
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/* Start the controller */
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gfar_start(dev);
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return 0;
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@ -851,34 +871,32 @@ static int gfar_enet_open(struct net_device *dev)
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return err;
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}
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static struct txfcb *gfar_add_fcb(struct sk_buff *skb, struct txbd8 *bdp)
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static inline struct txfcb *gfar_add_fcb(struct sk_buff *skb, struct txbd8 *bdp)
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{
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struct txfcb *fcb = (struct txfcb *)skb_push (skb, GMAC_FCB_LEN);
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memset(fcb, 0, GMAC_FCB_LEN);
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/* Flag the bd so the controller looks for the FCB */
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bdp->status |= TXBD_TOE;
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return fcb;
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}
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static inline void gfar_tx_checksum(struct sk_buff *skb, struct txfcb *fcb)
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{
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int len;
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u8 flags = 0;
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/* If we're here, it's a IP packet with a TCP or UDP
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* payload. We set it to checksum, using a pseudo-header
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* we provide
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*/
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fcb->ip = 1;
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fcb->tup = 1;
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fcb->ctu = 1;
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fcb->nph = 1;
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flags = TXFCB_DEFAULT;
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/* Notify the controller what the protocol is */
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if (skb->nh.iph->protocol == IPPROTO_UDP)
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fcb->udp = 1;
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/* Tell the controller what the protocol is */
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/* And provide the already calculated phcs */
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if (skb->nh.iph->protocol == IPPROTO_UDP) {
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flags |= TXFCB_UDP;
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fcb->phcs = skb->h.uh->check;
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} else
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fcb->phcs = skb->h.th->check;
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/* l3os is the distance between the start of the
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* frame (skb->data) and the start of the IP hdr.
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@ -887,17 +905,12 @@ static inline void gfar_tx_checksum(struct sk_buff *skb, struct txfcb *fcb)
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fcb->l3os = (u16)(skb->nh.raw - skb->data - GMAC_FCB_LEN);
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fcb->l4os = (u16)(skb->h.raw - skb->nh.raw);
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len = skb->nh.iph->tot_len - fcb->l4os;
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/* Provide the pseudoheader csum */
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fcb->phcs = ~csum_tcpudp_magic(skb->nh.iph->saddr,
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skb->nh.iph->daddr, len,
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skb->nh.iph->protocol, 0);
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fcb->flags = flags;
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}
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void gfar_tx_vlan(struct sk_buff *skb, struct txfcb *fcb)
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void inline gfar_tx_vlan(struct sk_buff *skb, struct txfcb *fcb)
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{
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fcb->vln = 1;
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fcb->flags |= TXFCB_VLN;
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fcb->vlctl = vlan_tx_tag_get(skb);
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}
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@ -908,6 +921,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
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struct gfar_private *priv = netdev_priv(dev);
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struct txfcb *fcb = NULL;
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struct txbd8 *txbdp;
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u16 status;
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/* Update transmit stats */
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priv->stats.tx_bytes += skb->len;
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@ -919,19 +933,22 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
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txbdp = priv->cur_tx;
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/* Clear all but the WRAP status flags */
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txbdp->status &= TXBD_WRAP;
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status = txbdp->status & TXBD_WRAP;
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/* Set up checksumming */
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if ((dev->features & NETIF_F_IP_CSUM)
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&& (CHECKSUM_HW == skb->ip_summed)) {
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if (likely((dev->features & NETIF_F_IP_CSUM)
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&& (CHECKSUM_HW == skb->ip_summed))) {
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fcb = gfar_add_fcb(skb, txbdp);
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status |= TXBD_TOE;
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gfar_tx_checksum(skb, fcb);
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}
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if (priv->vlan_enable &&
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unlikely(priv->vlgrp && vlan_tx_tag_present(skb))) {
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if (NULL == fcb)
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if (unlikely(NULL == fcb)) {
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fcb = gfar_add_fcb(skb, txbdp);
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status |= TXBD_TOE;
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}
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gfar_tx_vlan(skb, fcb);
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}
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@ -949,14 +966,16 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
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(priv->skb_curtx + 1) & TX_RING_MOD_MASK(priv->tx_ring_size);
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/* Flag the BD as interrupt-causing */
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txbdp->status |= TXBD_INTERRUPT;
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status |= TXBD_INTERRUPT;
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/* Flag the BD as ready to go, last in frame, and */
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/* in need of CRC */
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txbdp->status |= (TXBD_READY | TXBD_LAST | TXBD_CRC);
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status |= (TXBD_READY | TXBD_LAST | TXBD_CRC);
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dev->trans_start = jiffies;
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txbdp->status = status;
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/* If this was the last BD in the ring, the next one */
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/* is at the beginning of the ring */
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if (txbdp->status & TXBD_WRAP)
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@ -1010,21 +1029,7 @@ static struct net_device_stats * gfar_get_stats(struct net_device *dev)
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/* Changes the mac address if the controller is not running. */
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int gfar_set_mac_address(struct net_device *dev)
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{
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struct gfar_private *priv = netdev_priv(dev);
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int i;
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char tmpbuf[MAC_ADDR_LEN];
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u32 tempval;
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/* Now copy it into the mac registers backwards, cuz */
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/* little endian is silly */
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for (i = 0; i < MAC_ADDR_LEN; i++)
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tmpbuf[MAC_ADDR_LEN - 1 - i] = dev->dev_addr[i];
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gfar_write(&priv->regs->macstnaddr1, *((u32 *) (tmpbuf)));
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tempval = *((u32 *) (tmpbuf + 4));
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gfar_write(&priv->regs->macstnaddr2, tempval);
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gfar_set_mac_for_addr(dev, 0, dev->dev_addr);
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return 0;
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}
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@ -1110,7 +1115,7 @@ static int gfar_change_mtu(struct net_device *dev, int new_mtu)
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INCREMENTAL_BUFFER_SIZE;
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/* Only stop and start the controller if it isn't already
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* stopped */
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* stopped, and we changed something */
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if ((oldsize != tempsize) && (dev->flags & IFF_UP))
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stop_gfar(dev);
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|
|
@ -1220,6 +1225,7 @@ static irqreturn_t gfar_transmit(int irq, void *dev_id, struct pt_regs *regs)
|
|||
|
||||
struct sk_buff * gfar_new_skb(struct net_device *dev, struct rxbd8 *bdp)
|
||||
{
|
||||
unsigned int alignamount;
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
struct sk_buff *skb = NULL;
|
||||
unsigned int timeout = SKB_ALLOC_TIMEOUT;
|
||||
|
|
@ -1231,18 +1237,18 @@ struct sk_buff * gfar_new_skb(struct net_device *dev, struct rxbd8 *bdp)
|
|||
if (NULL == skb)
|
||||
return NULL;
|
||||
|
||||
alignamount = RXBUF_ALIGNMENT -
|
||||
(((unsigned) skb->data) & (RXBUF_ALIGNMENT - 1));
|
||||
|
||||
/* We need the data buffer to be aligned properly. We will reserve
|
||||
* as many bytes as needed to align the data properly
|
||||
*/
|
||||
skb_reserve(skb,
|
||||
RXBUF_ALIGNMENT -
|
||||
(((unsigned) skb->data) & (RXBUF_ALIGNMENT - 1)));
|
||||
skb_reserve(skb, alignamount);
|
||||
|
||||
skb->dev = dev;
|
||||
|
||||
bdp->bufPtr = dma_map_single(NULL, skb->data,
|
||||
priv->rx_buffer_size + RXBUF_ALIGNMENT,
|
||||
DMA_FROM_DEVICE);
|
||||
priv->rx_buffer_size, DMA_FROM_DEVICE);
|
||||
|
||||
bdp->length = 0;
|
||||
|
||||
|
|
@ -1350,7 +1356,7 @@ static inline void gfar_rx_checksum(struct sk_buff *skb, struct rxfcb *fcb)
|
|||
/* If valid headers were found, and valid sums
|
||||
* were verified, then we tell the kernel that no
|
||||
* checksumming is necessary. Otherwise, it is */
|
||||
if (fcb->cip && !fcb->eip && fcb->ctu && !fcb->etu)
|
||||
if ((fcb->flags & RXFCB_CSUM_MASK) == (RXFCB_CIP | RXFCB_CTU))
|
||||
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
||||
else
|
||||
skb->ip_summed = CHECKSUM_NONE;
|
||||
|
|
@ -1401,7 +1407,7 @@ static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
|
|||
skb->protocol = eth_type_trans(skb, dev);
|
||||
|
||||
/* Send the packet up the stack */
|
||||
if (unlikely(priv->vlgrp && fcb->vln))
|
||||
if (unlikely(priv->vlgrp && (fcb->flags & RXFCB_VLN)))
|
||||
ret = gfar_rx_vlan(skb, priv->vlgrp, fcb->vlctl);
|
||||
else
|
||||
ret = RECEIVE(skb);
|
||||
|
|
@ -1620,6 +1626,7 @@ static void adjust_link(struct net_device *dev)
|
|||
spin_lock_irqsave(&priv->lock, flags);
|
||||
if (phydev->link) {
|
||||
u32 tempval = gfar_read(®s->maccfg2);
|
||||
u32 ecntrl = gfar_read(®s->ecntrl);
|
||||
|
||||
/* Now we make sure that we can be in full duplex mode.
|
||||
* If not, we operate in half-duplex mode. */
|
||||
|
|
@ -1644,6 +1651,13 @@ static void adjust_link(struct net_device *dev)
|
|||
case 10:
|
||||
tempval =
|
||||
((tempval & ~(MACCFG2_IF)) | MACCFG2_MII);
|
||||
|
||||
/* Reduced mode distinguishes
|
||||
* between 10 and 100 */
|
||||
if (phydev->speed == SPEED_100)
|
||||
ecntrl |= ECNTRL_R100;
|
||||
else
|
||||
ecntrl &= ~(ECNTRL_R100);
|
||||
break;
|
||||
default:
|
||||
if (netif_msg_link(priv))
|
||||
|
|
@ -1657,6 +1671,7 @@ static void adjust_link(struct net_device *dev)
|
|||
}
|
||||
|
||||
gfar_write(®s->maccfg2, tempval);
|
||||
gfar_write(®s->ecntrl, ecntrl);
|
||||
|
||||
if (!priv->oldlink) {
|
||||
new_state = 1;
|
||||
|
|
@ -1721,6 +1736,9 @@ static void gfar_set_multi(struct net_device *dev)
|
|||
gfar_write(®s->gaddr6, 0xffffffff);
|
||||
gfar_write(®s->gaddr7, 0xffffffff);
|
||||
} else {
|
||||
int em_num;
|
||||
int idx;
|
||||
|
||||
/* zero out the hash */
|
||||
gfar_write(®s->igaddr0, 0x0);
|
||||
gfar_write(®s->igaddr1, 0x0);
|
||||
|
|
@ -1739,11 +1757,28 @@ static void gfar_set_multi(struct net_device *dev)
|
|||
gfar_write(®s->gaddr6, 0x0);
|
||||
gfar_write(®s->gaddr7, 0x0);
|
||||
|
||||
/* If we have extended hash tables, we need to
|
||||
* clear the exact match registers to prepare for
|
||||
* setting them */
|
||||
if (priv->extended_hash) {
|
||||
em_num = GFAR_EM_NUM + 1;
|
||||
gfar_clear_exact_match(dev);
|
||||
idx = 1;
|
||||
} else {
|
||||
idx = 0;
|
||||
em_num = 0;
|
||||
}
|
||||
|
||||
if(dev->mc_count == 0)
|
||||
return;
|
||||
|
||||
/* Parse the list, and set the appropriate bits */
|
||||
for(mc_ptr = dev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
|
||||
if (idx < em_num) {
|
||||
gfar_set_mac_for_addr(dev, idx,
|
||||
mc_ptr->dmi_addr);
|
||||
idx++;
|
||||
} else
|
||||
gfar_set_hash_for_addr(dev, mc_ptr->dmi_addr);
|
||||
}
|
||||
}
|
||||
|
|
@ -1751,6 +1786,18 @@ static void gfar_set_multi(struct net_device *dev)
|
|||
return;
|
||||
}
|
||||
|
||||
|
||||
/* Clears each of the exact match registers to zero, so they
|
||||
* don't interfere with normal reception */
|
||||
static void gfar_clear_exact_match(struct net_device *dev)
|
||||
{
|
||||
int idx;
|
||||
u8 zero_arr[MAC_ADDR_LEN] = {0,0,0,0,0,0};
|
||||
|
||||
for(idx = 1;idx < GFAR_EM_NUM + 1;idx++)
|
||||
gfar_set_mac_for_addr(dev, idx, (u8 *)zero_arr);
|
||||
}
|
||||
|
||||
/* Set the appropriate hash bit for the given addr */
|
||||
/* The algorithm works like so:
|
||||
* 1) Take the Destination Address (ie the multicast address), and
|
||||
|
|
@ -1781,6 +1828,32 @@ static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr)
|
|||
return;
|
||||
}
|
||||
|
||||
|
||||
/* There are multiple MAC Address register pairs on some controllers
|
||||
* This function sets the numth pair to a given address
|
||||
*/
|
||||
static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr)
|
||||
{
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
int idx;
|
||||
char tmpbuf[MAC_ADDR_LEN];
|
||||
u32 tempval;
|
||||
u32 *macptr = &priv->regs->macstnaddr1;
|
||||
|
||||
macptr += num*2;
|
||||
|
||||
/* Now copy it into the mac registers backwards, cuz */
|
||||
/* little endian is silly */
|
||||
for (idx = 0; idx < MAC_ADDR_LEN; idx++)
|
||||
tmpbuf[MAC_ADDR_LEN - 1 - idx] = addr[idx];
|
||||
|
||||
gfar_write(macptr, *((u32 *) (tmpbuf)));
|
||||
|
||||
tempval = *((u32 *) (tmpbuf + 4));
|
||||
|
||||
gfar_write(macptr+1, tempval);
|
||||
}
|
||||
|
||||
/* GFAR error interrupt handler */
|
||||
static irqreturn_t gfar_error(int irq, void *dev_id, struct pt_regs *regs)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -90,12 +90,26 @@ extern const char gfar_driver_version[];
|
|||
#define GFAR_RX_MAX_RING_SIZE 256
|
||||
#define GFAR_TX_MAX_RING_SIZE 256
|
||||
|
||||
#define GFAR_MAX_FIFO_THRESHOLD 511
|
||||
#define GFAR_MAX_FIFO_STARVE 511
|
||||
#define GFAR_MAX_FIFO_STARVE_OFF 511
|
||||
|
||||
#define DEFAULT_RX_BUFFER_SIZE 1536
|
||||
#define TX_RING_MOD_MASK(size) (size-1)
|
||||
#define RX_RING_MOD_MASK(size) (size-1)
|
||||
#define JUMBO_BUFFER_SIZE 9728
|
||||
#define JUMBO_FRAME_SIZE 9600
|
||||
|
||||
#define DEFAULT_FIFO_TX_THR 0x100
|
||||
#define DEFAULT_FIFO_TX_STARVE 0x40
|
||||
#define DEFAULT_FIFO_TX_STARVE_OFF 0x80
|
||||
#define DEFAULT_BD_STASH 1
|
||||
#define DEFAULT_STASH_LENGTH 64
|
||||
#define DEFAULT_STASH_INDEX 0
|
||||
|
||||
/* The number of Exact Match registers */
|
||||
#define GFAR_EM_NUM 15
|
||||
|
||||
/* Latency of interface clock in nanoseconds */
|
||||
/* Interface clock latency , in this case, means the
|
||||
* time described by a value of 1 in the interrupt
|
||||
|
|
@ -112,11 +126,11 @@ extern const char gfar_driver_version[];
|
|||
|
||||
#define DEFAULT_TX_COALESCE 1
|
||||
#define DEFAULT_TXCOUNT 16
|
||||
#define DEFAULT_TXTIME 400
|
||||
#define DEFAULT_TXTIME 4
|
||||
|
||||
#define DEFAULT_RX_COALESCE 1
|
||||
#define DEFAULT_RXCOUNT 16
|
||||
#define DEFAULT_RXTIME 400
|
||||
#define DEFAULT_RXTIME 4
|
||||
|
||||
#define TBIPA_VALUE 0x1f
|
||||
#define MIIMCFG_INIT_VALUE 0x00000007
|
||||
|
|
@ -147,6 +161,7 @@ extern const char gfar_driver_version[];
|
|||
|
||||
#define ECNTRL_INIT_SETTINGS 0x00001000
|
||||
#define ECNTRL_TBI_MODE 0x00000020
|
||||
#define ECNTRL_R100 0x00000008
|
||||
|
||||
#define MRBLR_INIT_SETTINGS DEFAULT_RX_BUFFER_SIZE
|
||||
|
||||
|
|
@ -181,10 +196,12 @@ extern const char gfar_driver_version[];
|
|||
#define RCTRL_PRSDEP_MASK 0x000000c0
|
||||
#define RCTRL_PRSDEP_INIT 0x000000c0
|
||||
#define RCTRL_PROM 0x00000008
|
||||
#define RCTRL_EMEN 0x00000002
|
||||
#define RCTRL_CHECKSUMMING (RCTRL_IPCSEN \
|
||||
| RCTRL_TUCSEN | RCTRL_PRSDEP_INIT)
|
||||
#define RCTRL_EXTHASH (RCTRL_GHTX)
|
||||
#define RCTRL_VLAN (RCTRL_PRSDEP_INIT)
|
||||
#define RCTRL_PADDING(x) ((x << 16) & RCTRL_PAL_MASK)
|
||||
|
||||
|
||||
#define RSTAT_CLEAR_RHALT 0x00800000
|
||||
|
|
@ -251,28 +268,26 @@ extern const char gfar_driver_version[];
|
|||
IMASK_XFUN | IMASK_RXC | IMASK_BABT | IMASK_DPE \
|
||||
| IMASK_PERR)
|
||||
|
||||
/* Fifo management */
|
||||
#define FIFO_TX_THR_MASK 0x01ff
|
||||
#define FIFO_TX_STARVE_MASK 0x01ff
|
||||
#define FIFO_TX_STARVE_OFF_MASK 0x01ff
|
||||
|
||||
/* Attribute fields */
|
||||
|
||||
/* This enables rx snooping for buffers and descriptors */
|
||||
#ifdef CONFIG_GFAR_BDSTASH
|
||||
#define ATTR_BDSTASH 0x00000800
|
||||
#else
|
||||
#define ATTR_BDSTASH 0x00000000
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_GFAR_BUFSTASH
|
||||
#define ATTR_BUFSTASH 0x00004000
|
||||
#define STASH_LENGTH 64
|
||||
#else
|
||||
#define ATTR_BUFSTASH 0x00000000
|
||||
#endif
|
||||
|
||||
#define ATTR_SNOOPING 0x000000c0
|
||||
#define ATTR_INIT_SETTINGS (ATTR_SNOOPING \
|
||||
| ATTR_BDSTASH | ATTR_BUFSTASH)
|
||||
#define ATTR_INIT_SETTINGS ATTR_SNOOPING
|
||||
|
||||
#define ATTRELI_INIT_SETTINGS 0x0
|
||||
#define ATTRELI_EL_MASK 0x3fff0000
|
||||
#define ATTRELI_EL(x) (x << 16)
|
||||
#define ATTRELI_EI_MASK 0x00003fff
|
||||
#define ATTRELI_EI(x) (x)
|
||||
|
||||
|
||||
/* TxBD status field bits */
|
||||
|
|
@ -328,6 +343,7 @@ extern const char gfar_driver_version[];
|
|||
#define RXFCB_CTU 0x0400
|
||||
#define RXFCB_EIP 0x0200
|
||||
#define RXFCB_ETU 0x0100
|
||||
#define RXFCB_CSUM_MASK 0x0f00
|
||||
#define RXFCB_PERR_MASK 0x000c
|
||||
#define RXFCB_PERR_BADL3 0x0008
|
||||
|
||||
|
|
@ -339,14 +355,7 @@ struct txbd8
|
|||
};
|
||||
|
||||
struct txfcb {
|
||||
u8 vln:1,
|
||||
ip:1,
|
||||
ip6:1,
|
||||
tup:1,
|
||||
udp:1,
|
||||
cip:1,
|
||||
ctu:1,
|
||||
nph:1;
|
||||
u8 flags;
|
||||
u8 reserved;
|
||||
u8 l4os; /* Level 4 Header Offset */
|
||||
u8 l3os; /* Level 3 Header Offset */
|
||||
|
|
@ -362,14 +371,7 @@ struct rxbd8
|
|||
};
|
||||
|
||||
struct rxfcb {
|
||||
u16 vln:1,
|
||||
ip:1,
|
||||
ip6:1,
|
||||
tup:1,
|
||||
cip:1,
|
||||
ctu:1,
|
||||
eip:1,
|
||||
etu:1;
|
||||
u16 flags;
|
||||
u8 rq; /* Receive Queue index */
|
||||
u8 pro; /* Layer 4 Protocol */
|
||||
u16 reserved;
|
||||
|
|
@ -688,12 +690,17 @@ struct gfar_private {
|
|||
spinlock_t lock;
|
||||
unsigned int rx_buffer_size;
|
||||
unsigned int rx_stash_size;
|
||||
unsigned int rx_stash_index;
|
||||
unsigned int tx_ring_size;
|
||||
unsigned int rx_ring_size;
|
||||
unsigned int fifo_threshold;
|
||||
unsigned int fifo_starve;
|
||||
unsigned int fifo_starve_off;
|
||||
|
||||
unsigned char vlan_enable:1,
|
||||
rx_csum_enable:1,
|
||||
extended_hash:1;
|
||||
extended_hash:1,
|
||||
bd_stash_en:1;
|
||||
unsigned short padding;
|
||||
struct vlan_group *vlgrp;
|
||||
/* Info structure initialized by board setup code */
|
||||
|
|
@ -731,6 +738,6 @@ extern void stop_gfar(struct net_device *dev);
|
|||
extern void gfar_halt(struct net_device *dev);
|
||||
extern void gfar_phy_test(struct mii_bus *bus, struct phy_device *phydev,
|
||||
int enable, u32 regnum, u32 read);
|
||||
void gfar_setup_stashing(struct net_device *dev);
|
||||
void gfar_init_sysfs(struct net_device *dev);
|
||||
|
||||
#endif /* __GIANFAR_H */
|
||||
|
|
|
|||
|
|
@ -24,6 +24,7 @@
|
|||
#define MII_READ_COMMAND 0x00000001
|
||||
|
||||
#define GFAR_SUPPORTED (SUPPORTED_10baseT_Half \
|
||||
| SUPPORTED_10baseT_Full \
|
||||
| SUPPORTED_100baseT_Half \
|
||||
| SUPPORTED_100baseT_Full \
|
||||
| SUPPORTED_Autoneg \
|
||||
|
|
|
|||
311
drivers/net/gianfar_sysfs.c
Normal file
311
drivers/net/gianfar_sysfs.c
Normal file
|
|
@ -0,0 +1,311 @@
|
|||
/*
|
||||
* drivers/net/gianfar_sysfs.c
|
||||
*
|
||||
* Gianfar Ethernet Driver
|
||||
* This driver is designed for the non-CPM ethernet controllers
|
||||
* on the 85xx and 83xx family of integrated processors
|
||||
* Based on 8260_io/fcc_enet.c
|
||||
*
|
||||
* Author: Andy Fleming
|
||||
* Maintainer: Kumar Gala (kumar.gala@freescale.com)
|
||||
*
|
||||
* Copyright (c) 2002-2005 Freescale Semiconductor, Inc.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
|
||||
* option) any later version.
|
||||
*
|
||||
* Sysfs file creation and management
|
||||
*/
|
||||
|
||||
#include <linux/config.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/unistd.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/etherdevice.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/device.h>
|
||||
|
||||
#include <asm/uaccess.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/version.h>
|
||||
|
||||
#include "gianfar.h"
|
||||
|
||||
#define GFAR_ATTR(_name) \
|
||||
static ssize_t gfar_show_##_name(struct class_device *cdev, char *buf); \
|
||||
static ssize_t gfar_set_##_name(struct class_device *cdev, \
|
||||
const char *buf, size_t count); \
|
||||
static CLASS_DEVICE_ATTR(_name, 0644, gfar_show_##_name, gfar_set_##_name)
|
||||
|
||||
#define GFAR_CREATE_FILE(_dev, _name) \
|
||||
class_device_create_file(&_dev->class_dev, &class_device_attr_##_name)
|
||||
|
||||
GFAR_ATTR(bd_stash);
|
||||
GFAR_ATTR(rx_stash_size);
|
||||
GFAR_ATTR(rx_stash_index);
|
||||
GFAR_ATTR(fifo_threshold);
|
||||
GFAR_ATTR(fifo_starve);
|
||||
GFAR_ATTR(fifo_starve_off);
|
||||
|
||||
#define to_net_dev(cd) container_of(cd, struct net_device, class_dev)
|
||||
|
||||
static ssize_t gfar_show_bd_stash(struct class_device *cdev, char *buf)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
|
||||
return sprintf(buf, "%s\n", priv->bd_stash_en? "on" : "off");
|
||||
}
|
||||
|
||||
static ssize_t gfar_set_bd_stash(struct class_device *cdev,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
int new_setting = 0;
|
||||
u32 temp;
|
||||
unsigned long flags;
|
||||
|
||||
/* Find out the new setting */
|
||||
if (!strncmp("on", buf, count-1) || !strncmp("1", buf, count-1))
|
||||
new_setting = 1;
|
||||
else if (!strncmp("off", buf, count-1) || !strncmp("0", buf, count-1))
|
||||
new_setting = 0;
|
||||
else
|
||||
return count;
|
||||
|
||||
spin_lock_irqsave(&priv->lock, flags);
|
||||
|
||||
/* Set the new stashing value */
|
||||
priv->bd_stash_en = new_setting;
|
||||
|
||||
temp = gfar_read(&priv->regs->attr);
|
||||
|
||||
if (new_setting)
|
||||
temp |= ATTR_BDSTASH;
|
||||
else
|
||||
temp &= ~(ATTR_BDSTASH);
|
||||
|
||||
gfar_write(&priv->regs->attr, temp);
|
||||
|
||||
spin_unlock_irqrestore(&priv->lock, flags);
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static ssize_t gfar_show_rx_stash_size(struct class_device *cdev, char *buf)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
|
||||
return sprintf(buf, "%d\n", priv->rx_stash_size);
|
||||
}
|
||||
|
||||
static ssize_t gfar_set_rx_stash_size(struct class_device *cdev,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
unsigned int length = simple_strtoul(buf, NULL, 0);
|
||||
u32 temp;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&priv->lock, flags);
|
||||
if (length > priv->rx_buffer_size)
|
||||
return count;
|
||||
|
||||
if (length == priv->rx_stash_size)
|
||||
return count;
|
||||
|
||||
priv->rx_stash_size = length;
|
||||
|
||||
temp = gfar_read(&priv->regs->attreli);
|
||||
temp &= ~ATTRELI_EL_MASK;
|
||||
temp |= ATTRELI_EL(length);
|
||||
gfar_write(&priv->regs->attreli, temp);
|
||||
|
||||
/* Turn stashing on/off as appropriate */
|
||||
temp = gfar_read(&priv->regs->attr);
|
||||
|
||||
if (length)
|
||||
temp |= ATTR_BUFSTASH;
|
||||
else
|
||||
temp &= ~(ATTR_BUFSTASH);
|
||||
|
||||
gfar_write(&priv->regs->attr, temp);
|
||||
|
||||
spin_unlock_irqrestore(&priv->lock, flags);
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
|
||||
/* Stashing will only be enabled when rx_stash_size != 0 */
|
||||
static ssize_t gfar_show_rx_stash_index(struct class_device *cdev, char *buf)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
|
||||
return sprintf(buf, "%d\n", priv->rx_stash_index);
|
||||
}
|
||||
|
||||
static ssize_t gfar_set_rx_stash_index(struct class_device *cdev,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
unsigned short index = simple_strtoul(buf, NULL, 0);
|
||||
u32 temp;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&priv->lock, flags);
|
||||
if (index > priv->rx_stash_size)
|
||||
return count;
|
||||
|
||||
if (index == priv->rx_stash_index)
|
||||
return count;
|
||||
|
||||
priv->rx_stash_index = index;
|
||||
|
||||
temp = gfar_read(&priv->regs->attreli);
|
||||
temp &= ~ATTRELI_EI_MASK;
|
||||
temp |= ATTRELI_EI(index);
|
||||
gfar_write(&priv->regs->attreli, flags);
|
||||
|
||||
spin_unlock_irqrestore(&priv->lock, flags);
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static ssize_t gfar_show_fifo_threshold(struct class_device *cdev, char *buf)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
|
||||
return sprintf(buf, "%d\n", priv->fifo_threshold);
|
||||
}
|
||||
|
||||
static ssize_t gfar_set_fifo_threshold(struct class_device *cdev,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
unsigned int length = simple_strtoul(buf, NULL, 0);
|
||||
u32 temp;
|
||||
unsigned long flags;
|
||||
|
||||
if (length > GFAR_MAX_FIFO_THRESHOLD)
|
||||
return count;
|
||||
|
||||
spin_lock_irqsave(&priv->lock, flags);
|
||||
|
||||
priv->fifo_threshold = length;
|
||||
|
||||
temp = gfar_read(&priv->regs->fifo_tx_thr);
|
||||
temp &= ~FIFO_TX_THR_MASK;
|
||||
temp |= length;
|
||||
gfar_write(&priv->regs->fifo_tx_thr, temp);
|
||||
|
||||
spin_unlock_irqrestore(&priv->lock, flags);
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static ssize_t gfar_show_fifo_starve(struct class_device *cdev, char *buf)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
|
||||
return sprintf(buf, "%d\n", priv->fifo_starve);
|
||||
}
|
||||
|
||||
|
||||
static ssize_t gfar_set_fifo_starve(struct class_device *cdev,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
unsigned int num = simple_strtoul(buf, NULL, 0);
|
||||
u32 temp;
|
||||
unsigned long flags;
|
||||
|
||||
if (num > GFAR_MAX_FIFO_STARVE)
|
||||
return count;
|
||||
|
||||
spin_lock_irqsave(&priv->lock, flags);
|
||||
|
||||
priv->fifo_starve = num;
|
||||
|
||||
temp = gfar_read(&priv->regs->fifo_tx_starve);
|
||||
temp &= ~FIFO_TX_STARVE_MASK;
|
||||
temp |= num;
|
||||
gfar_write(&priv->regs->fifo_tx_starve, temp);
|
||||
|
||||
spin_unlock_irqrestore(&priv->lock, flags);
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static ssize_t gfar_show_fifo_starve_off(struct class_device *cdev, char *buf)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
|
||||
return sprintf(buf, "%d\n", priv->fifo_starve_off);
|
||||
}
|
||||
|
||||
static ssize_t gfar_set_fifo_starve_off(struct class_device *cdev,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct net_device *dev = to_net_dev(cdev);
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
unsigned int num = simple_strtoul(buf, NULL, 0);
|
||||
u32 temp;
|
||||
unsigned long flags;
|
||||
|
||||
if (num > GFAR_MAX_FIFO_STARVE_OFF)
|
||||
return count;
|
||||
|
||||
spin_lock_irqsave(&priv->lock, flags);
|
||||
|
||||
priv->fifo_starve_off = num;
|
||||
|
||||
temp = gfar_read(&priv->regs->fifo_tx_starve_shutoff);
|
||||
temp &= ~FIFO_TX_STARVE_OFF_MASK;
|
||||
temp |= num;
|
||||
gfar_write(&priv->regs->fifo_tx_starve_shutoff, temp);
|
||||
|
||||
spin_unlock_irqrestore(&priv->lock, flags);
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
void gfar_init_sysfs(struct net_device *dev)
|
||||
{
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
|
||||
/* Initialize the default values */
|
||||
priv->rx_stash_size = DEFAULT_STASH_LENGTH;
|
||||
priv->rx_stash_index = DEFAULT_STASH_INDEX;
|
||||
priv->fifo_threshold = DEFAULT_FIFO_TX_THR;
|
||||
priv->fifo_starve = DEFAULT_FIFO_TX_STARVE;
|
||||
priv->fifo_starve_off = DEFAULT_FIFO_TX_STARVE_OFF;
|
||||
priv->bd_stash_en = DEFAULT_BD_STASH;
|
||||
|
||||
/* Create our sysfs files */
|
||||
GFAR_CREATE_FILE(dev, bd_stash);
|
||||
GFAR_CREATE_FILE(dev, rx_stash_size);
|
||||
GFAR_CREATE_FILE(dev, rx_stash_index);
|
||||
GFAR_CREATE_FILE(dev, fifo_threshold);
|
||||
GFAR_CREATE_FILE(dev, fifo_starve);
|
||||
GFAR_CREATE_FILE(dev, fifo_starve_off);
|
||||
|
||||
}
|
||||
Loading…
Reference in a new issue