forked from Minki/linux
b04138b335
The ADM6996L switch and some Broadcom switches with two MII interfaces like the BCM5325F connected to two MACs on the SoC, used on some routers do not return a valid value when reading the PHY id register and Linux thinks there is no PHY at all, but that is wrong. This patch registers a fixed phy in the arch code and then searches it when there is no other phy in the Ethernet driver code. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2600 lines
63 KiB
C
2600 lines
63 KiB
C
/* b44.c: Broadcom 44xx/47xx Fast Ethernet device driver.
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*
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* Copyright (C) 2002 David S. Miller (davem@redhat.com)
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* Copyright (C) 2004 Pekka Pietikainen (pp@ee.oulu.fi)
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* Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
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* Copyright (C) 2006 Felix Fietkau (nbd@openwrt.org)
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* Copyright (C) 2006 Broadcom Corporation.
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* Copyright (C) 2007 Michael Buesch <m@bues.ch>
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* Copyright (C) 2013 Hauke Mehrtens <hauke@hauke-m.de>
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*
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* Distribute under GPL.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/types.h>
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#include <linux/netdevice.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <linux/if_ether.h>
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#include <linux/if_vlan.h>
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#include <linux/etherdevice.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/dma-mapping.h>
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#include <linux/ssb/ssb.h>
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#include <linux/slab.h>
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#include <linux/phy.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include "b44.h"
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#define DRV_MODULE_NAME "b44"
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#define DRV_MODULE_VERSION "2.0"
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#define DRV_DESCRIPTION "Broadcom 44xx/47xx 10/100 PCI ethernet driver"
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#define B44_DEF_MSG_ENABLE \
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(NETIF_MSG_DRV | \
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NETIF_MSG_PROBE | \
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NETIF_MSG_LINK | \
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NETIF_MSG_TIMER | \
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NETIF_MSG_IFDOWN | \
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NETIF_MSG_IFUP | \
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NETIF_MSG_RX_ERR | \
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NETIF_MSG_TX_ERR)
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/* length of time before we decide the hardware is borked,
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* and dev->tx_timeout() should be called to fix the problem
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*/
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#define B44_TX_TIMEOUT (5 * HZ)
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/* hardware minimum and maximum for a single frame's data payload */
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#define B44_MIN_MTU 60
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#define B44_MAX_MTU 1500
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#define B44_RX_RING_SIZE 512
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#define B44_DEF_RX_RING_PENDING 200
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#define B44_RX_RING_BYTES (sizeof(struct dma_desc) * \
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B44_RX_RING_SIZE)
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#define B44_TX_RING_SIZE 512
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#define B44_DEF_TX_RING_PENDING (B44_TX_RING_SIZE - 1)
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#define B44_TX_RING_BYTES (sizeof(struct dma_desc) * \
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B44_TX_RING_SIZE)
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#define TX_RING_GAP(BP) \
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(B44_TX_RING_SIZE - (BP)->tx_pending)
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#define TX_BUFFS_AVAIL(BP) \
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(((BP)->tx_cons <= (BP)->tx_prod) ? \
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(BP)->tx_cons + (BP)->tx_pending - (BP)->tx_prod : \
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(BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP))
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#define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1))
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#define RX_PKT_OFFSET (RX_HEADER_LEN + 2)
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#define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET)
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/* minimum number of free TX descriptors required to wake up TX process */
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#define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4)
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/* b44 internal pattern match filter info */
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#define B44_PATTERN_BASE 0x400
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#define B44_PATTERN_SIZE 0x80
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#define B44_PMASK_BASE 0x600
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#define B44_PMASK_SIZE 0x10
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#define B44_MAX_PATTERNS 16
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#define B44_ETHIPV6UDP_HLEN 62
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#define B44_ETHIPV4UDP_HLEN 42
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MODULE_AUTHOR("Felix Fietkau, Florian Schirmer, Pekka Pietikainen, David S. Miller");
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MODULE_DESCRIPTION(DRV_DESCRIPTION);
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_MODULE_VERSION);
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static int b44_debug = -1; /* -1 == use B44_DEF_MSG_ENABLE as value */
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module_param(b44_debug, int, 0);
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MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value");
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#ifdef CONFIG_B44_PCI
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static DEFINE_PCI_DEVICE_TABLE(b44_pci_tbl) = {
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{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401) },
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{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B0) },
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{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1) },
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{ 0 } /* terminate list with empty entry */
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};
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MODULE_DEVICE_TABLE(pci, b44_pci_tbl);
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static struct pci_driver b44_pci_driver = {
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.name = DRV_MODULE_NAME,
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.id_table = b44_pci_tbl,
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};
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#endif /* CONFIG_B44_PCI */
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static const struct ssb_device_id b44_ssb_tbl[] = {
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SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_ETHERNET, SSB_ANY_REV),
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SSB_DEVTABLE_END
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};
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MODULE_DEVICE_TABLE(ssb, b44_ssb_tbl);
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static void b44_halt(struct b44 *);
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static void b44_init_rings(struct b44 *);
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#define B44_FULL_RESET 1
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#define B44_FULL_RESET_SKIP_PHY 2
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#define B44_PARTIAL_RESET 3
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#define B44_CHIP_RESET_FULL 4
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#define B44_CHIP_RESET_PARTIAL 5
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static void b44_init_hw(struct b44 *, int);
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static int dma_desc_sync_size;
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static int instance;
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static const char b44_gstrings[][ETH_GSTRING_LEN] = {
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#define _B44(x...) # x,
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B44_STAT_REG_DECLARE
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#undef _B44
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};
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static inline void b44_sync_dma_desc_for_device(struct ssb_device *sdev,
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dma_addr_t dma_base,
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unsigned long offset,
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enum dma_data_direction dir)
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{
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dma_sync_single_for_device(sdev->dma_dev, dma_base + offset,
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dma_desc_sync_size, dir);
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}
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static inline void b44_sync_dma_desc_for_cpu(struct ssb_device *sdev,
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dma_addr_t dma_base,
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unsigned long offset,
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enum dma_data_direction dir)
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{
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dma_sync_single_for_cpu(sdev->dma_dev, dma_base + offset,
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dma_desc_sync_size, dir);
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}
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static inline unsigned long br32(const struct b44 *bp, unsigned long reg)
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{
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return ssb_read32(bp->sdev, reg);
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}
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static inline void bw32(const struct b44 *bp,
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unsigned long reg, unsigned long val)
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{
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ssb_write32(bp->sdev, reg, val);
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}
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static int b44_wait_bit(struct b44 *bp, unsigned long reg,
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u32 bit, unsigned long timeout, const int clear)
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{
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unsigned long i;
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for (i = 0; i < timeout; i++) {
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u32 val = br32(bp, reg);
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if (clear && !(val & bit))
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break;
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if (!clear && (val & bit))
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break;
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udelay(10);
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}
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if (i == timeout) {
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if (net_ratelimit())
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netdev_err(bp->dev, "BUG! Timeout waiting for bit %08x of register %lx to %s\n",
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bit, reg, clear ? "clear" : "set");
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return -ENODEV;
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}
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return 0;
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}
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static inline void __b44_cam_read(struct b44 *bp, unsigned char *data, int index)
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{
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u32 val;
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bw32(bp, B44_CAM_CTRL, (CAM_CTRL_READ |
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(index << CAM_CTRL_INDEX_SHIFT)));
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b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
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val = br32(bp, B44_CAM_DATA_LO);
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data[2] = (val >> 24) & 0xFF;
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data[3] = (val >> 16) & 0xFF;
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data[4] = (val >> 8) & 0xFF;
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data[5] = (val >> 0) & 0xFF;
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val = br32(bp, B44_CAM_DATA_HI);
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data[0] = (val >> 8) & 0xFF;
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data[1] = (val >> 0) & 0xFF;
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}
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static inline void __b44_cam_write(struct b44 *bp, unsigned char *data, int index)
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{
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u32 val;
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val = ((u32) data[2]) << 24;
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val |= ((u32) data[3]) << 16;
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val |= ((u32) data[4]) << 8;
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val |= ((u32) data[5]) << 0;
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bw32(bp, B44_CAM_DATA_LO, val);
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val = (CAM_DATA_HI_VALID |
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(((u32) data[0]) << 8) |
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(((u32) data[1]) << 0));
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bw32(bp, B44_CAM_DATA_HI, val);
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bw32(bp, B44_CAM_CTRL, (CAM_CTRL_WRITE |
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(index << CAM_CTRL_INDEX_SHIFT)));
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b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
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}
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static inline void __b44_disable_ints(struct b44 *bp)
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{
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bw32(bp, B44_IMASK, 0);
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}
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static void b44_disable_ints(struct b44 *bp)
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{
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__b44_disable_ints(bp);
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/* Flush posted writes. */
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br32(bp, B44_IMASK);
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}
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static void b44_enable_ints(struct b44 *bp)
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{
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bw32(bp, B44_IMASK, bp->imask);
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}
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static int __b44_readphy(struct b44 *bp, int phy_addr, int reg, u32 *val)
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{
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int err;
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bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
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bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
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(MDIO_OP_READ << MDIO_DATA_OP_SHIFT) |
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(phy_addr << MDIO_DATA_PMD_SHIFT) |
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(reg << MDIO_DATA_RA_SHIFT) |
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(MDIO_TA_VALID << MDIO_DATA_TA_SHIFT)));
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err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
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*val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA;
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return err;
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}
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static int __b44_writephy(struct b44 *bp, int phy_addr, int reg, u32 val)
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{
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bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
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bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
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(MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) |
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(phy_addr << MDIO_DATA_PMD_SHIFT) |
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(reg << MDIO_DATA_RA_SHIFT) |
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(MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) |
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(val & MDIO_DATA_DATA)));
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return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
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}
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static inline int b44_readphy(struct b44 *bp, int reg, u32 *val)
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{
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if (bp->flags & B44_FLAG_EXTERNAL_PHY)
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return 0;
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return __b44_readphy(bp, bp->phy_addr, reg, val);
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}
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static inline int b44_writephy(struct b44 *bp, int reg, u32 val)
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{
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if (bp->flags & B44_FLAG_EXTERNAL_PHY)
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return 0;
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return __b44_writephy(bp, bp->phy_addr, reg, val);
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}
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/* miilib interface */
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static int b44_mdio_read_mii(struct net_device *dev, int phy_id, int location)
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{
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u32 val;
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struct b44 *bp = netdev_priv(dev);
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int rc = __b44_readphy(bp, phy_id, location, &val);
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if (rc)
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return 0xffffffff;
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return val;
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}
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static void b44_mdio_write_mii(struct net_device *dev, int phy_id, int location,
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int val)
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{
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struct b44 *bp = netdev_priv(dev);
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__b44_writephy(bp, phy_id, location, val);
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}
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static int b44_mdio_read_phylib(struct mii_bus *bus, int phy_id, int location)
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{
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u32 val;
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struct b44 *bp = bus->priv;
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int rc = __b44_readphy(bp, phy_id, location, &val);
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if (rc)
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return 0xffffffff;
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return val;
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}
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static int b44_mdio_write_phylib(struct mii_bus *bus, int phy_id, int location,
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u16 val)
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{
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struct b44 *bp = bus->priv;
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return __b44_writephy(bp, phy_id, location, val);
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}
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static int b44_phy_reset(struct b44 *bp)
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{
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u32 val;
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int err;
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if (bp->flags & B44_FLAG_EXTERNAL_PHY)
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return 0;
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err = b44_writephy(bp, MII_BMCR, BMCR_RESET);
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if (err)
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return err;
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udelay(100);
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err = b44_readphy(bp, MII_BMCR, &val);
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if (!err) {
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if (val & BMCR_RESET) {
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netdev_err(bp->dev, "PHY Reset would not complete\n");
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err = -ENODEV;
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}
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}
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return err;
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}
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static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags)
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{
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u32 val;
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bp->flags &= ~(B44_FLAG_TX_PAUSE | B44_FLAG_RX_PAUSE);
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bp->flags |= pause_flags;
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val = br32(bp, B44_RXCONFIG);
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if (pause_flags & B44_FLAG_RX_PAUSE)
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val |= RXCONFIG_FLOW;
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else
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val &= ~RXCONFIG_FLOW;
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bw32(bp, B44_RXCONFIG, val);
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val = br32(bp, B44_MAC_FLOW);
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if (pause_flags & B44_FLAG_TX_PAUSE)
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val |= (MAC_FLOW_PAUSE_ENAB |
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(0xc0 & MAC_FLOW_RX_HI_WATER));
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else
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val &= ~MAC_FLOW_PAUSE_ENAB;
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bw32(bp, B44_MAC_FLOW, val);
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}
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static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote)
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{
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u32 pause_enab = 0;
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/* The driver supports only rx pause by default because
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the b44 mac tx pause mechanism generates excessive
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pause frames.
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Use ethtool to turn on b44 tx pause if necessary.
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*/
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if ((local & ADVERTISE_PAUSE_CAP) &&
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(local & ADVERTISE_PAUSE_ASYM)){
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if ((remote & LPA_PAUSE_ASYM) &&
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!(remote & LPA_PAUSE_CAP))
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pause_enab |= B44_FLAG_RX_PAUSE;
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}
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__b44_set_flow_ctrl(bp, pause_enab);
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}
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|
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#ifdef CONFIG_BCM47XX
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#include <bcm47xx_nvram.h>
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static void b44_wap54g10_workaround(struct b44 *bp)
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{
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char buf[20];
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u32 val;
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int err;
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|
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/*
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* workaround for bad hardware design in Linksys WAP54G v1.0
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* see https://dev.openwrt.org/ticket/146
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* check and reset bit "isolate"
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*/
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if (bcm47xx_nvram_getenv("boardnum", buf, sizeof(buf)) < 0)
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return;
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if (simple_strtoul(buf, NULL, 0) == 2) {
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err = __b44_readphy(bp, 0, MII_BMCR, &val);
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if (err)
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goto error;
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if (!(val & BMCR_ISOLATE))
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return;
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val &= ~BMCR_ISOLATE;
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err = __b44_writephy(bp, 0, MII_BMCR, val);
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if (err)
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goto error;
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}
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return;
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error:
|
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pr_warning("PHY: cannot reset MII transceiver isolate bit\n");
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}
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#else
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static inline void b44_wap54g10_workaround(struct b44 *bp)
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{
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}
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#endif
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static int b44_setup_phy(struct b44 *bp)
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{
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u32 val;
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int err;
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b44_wap54g10_workaround(bp);
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if (bp->flags & B44_FLAG_EXTERNAL_PHY)
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return 0;
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if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0)
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goto out;
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if ((err = b44_writephy(bp, B44_MII_ALEDCTRL,
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val & MII_ALEDCTRL_ALLMSK)) != 0)
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goto out;
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if ((err = b44_readphy(bp, B44_MII_TLEDCTRL, &val)) != 0)
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goto out;
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if ((err = b44_writephy(bp, B44_MII_TLEDCTRL,
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val | MII_TLEDCTRL_ENABLE)) != 0)
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goto out;
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if (!(bp->flags & B44_FLAG_FORCE_LINK)) {
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u32 adv = ADVERTISE_CSMA;
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if (bp->flags & B44_FLAG_ADV_10HALF)
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adv |= ADVERTISE_10HALF;
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if (bp->flags & B44_FLAG_ADV_10FULL)
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adv |= ADVERTISE_10FULL;
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if (bp->flags & B44_FLAG_ADV_100HALF)
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adv |= ADVERTISE_100HALF;
|
|
if (bp->flags & B44_FLAG_ADV_100FULL)
|
|
adv |= ADVERTISE_100FULL;
|
|
|
|
if (bp->flags & B44_FLAG_PAUSE_AUTO)
|
|
adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
|
|
|
|
if ((err = b44_writephy(bp, MII_ADVERTISE, adv)) != 0)
|
|
goto out;
|
|
if ((err = b44_writephy(bp, MII_BMCR, (BMCR_ANENABLE |
|
|
BMCR_ANRESTART))) != 0)
|
|
goto out;
|
|
} else {
|
|
u32 bmcr;
|
|
|
|
if ((err = b44_readphy(bp, MII_BMCR, &bmcr)) != 0)
|
|
goto out;
|
|
bmcr &= ~(BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_SPEED100);
|
|
if (bp->flags & B44_FLAG_100_BASE_T)
|
|
bmcr |= BMCR_SPEED100;
|
|
if (bp->flags & B44_FLAG_FULL_DUPLEX)
|
|
bmcr |= BMCR_FULLDPLX;
|
|
if ((err = b44_writephy(bp, MII_BMCR, bmcr)) != 0)
|
|
goto out;
|
|
|
|
/* Since we will not be negotiating there is no safe way
|
|
* to determine if the link partner supports flow control
|
|
* or not. So just disable it completely in this case.
|
|
*/
|
|
b44_set_flow_ctrl(bp, 0, 0);
|
|
}
|
|
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static void b44_stats_update(struct b44 *bp)
|
|
{
|
|
unsigned long reg;
|
|
u64 *val;
|
|
|
|
val = &bp->hw_stats.tx_good_octets;
|
|
u64_stats_update_begin(&bp->hw_stats.syncp);
|
|
|
|
for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) {
|
|
*val++ += br32(bp, reg);
|
|
}
|
|
|
|
/* Pad */
|
|
reg += 8*4UL;
|
|
|
|
for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) {
|
|
*val++ += br32(bp, reg);
|
|
}
|
|
|
|
u64_stats_update_end(&bp->hw_stats.syncp);
|
|
}
|
|
|
|
static void b44_link_report(struct b44 *bp)
|
|
{
|
|
if (!netif_carrier_ok(bp->dev)) {
|
|
netdev_info(bp->dev, "Link is down\n");
|
|
} else {
|
|
netdev_info(bp->dev, "Link is up at %d Mbps, %s duplex\n",
|
|
(bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10,
|
|
(bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half");
|
|
|
|
netdev_info(bp->dev, "Flow control is %s for TX and %s for RX\n",
|
|
(bp->flags & B44_FLAG_TX_PAUSE) ? "on" : "off",
|
|
(bp->flags & B44_FLAG_RX_PAUSE) ? "on" : "off");
|
|
}
|
|
}
|
|
|
|
static void b44_check_phy(struct b44 *bp)
|
|
{
|
|
u32 bmsr, aux;
|
|
|
|
if (bp->flags & B44_FLAG_EXTERNAL_PHY) {
|
|
bp->flags |= B44_FLAG_100_BASE_T;
|
|
if (!netif_carrier_ok(bp->dev)) {
|
|
u32 val = br32(bp, B44_TX_CTRL);
|
|
if (bp->flags & B44_FLAG_FULL_DUPLEX)
|
|
val |= TX_CTRL_DUPLEX;
|
|
else
|
|
val &= ~TX_CTRL_DUPLEX;
|
|
bw32(bp, B44_TX_CTRL, val);
|
|
netif_carrier_on(bp->dev);
|
|
b44_link_report(bp);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (!b44_readphy(bp, MII_BMSR, &bmsr) &&
|
|
!b44_readphy(bp, B44_MII_AUXCTRL, &aux) &&
|
|
(bmsr != 0xffff)) {
|
|
if (aux & MII_AUXCTRL_SPEED)
|
|
bp->flags |= B44_FLAG_100_BASE_T;
|
|
else
|
|
bp->flags &= ~B44_FLAG_100_BASE_T;
|
|
if (aux & MII_AUXCTRL_DUPLEX)
|
|
bp->flags |= B44_FLAG_FULL_DUPLEX;
|
|
else
|
|
bp->flags &= ~B44_FLAG_FULL_DUPLEX;
|
|
|
|
if (!netif_carrier_ok(bp->dev) &&
|
|
(bmsr & BMSR_LSTATUS)) {
|
|
u32 val = br32(bp, B44_TX_CTRL);
|
|
u32 local_adv, remote_adv;
|
|
|
|
if (bp->flags & B44_FLAG_FULL_DUPLEX)
|
|
val |= TX_CTRL_DUPLEX;
|
|
else
|
|
val &= ~TX_CTRL_DUPLEX;
|
|
bw32(bp, B44_TX_CTRL, val);
|
|
|
|
if (!(bp->flags & B44_FLAG_FORCE_LINK) &&
|
|
!b44_readphy(bp, MII_ADVERTISE, &local_adv) &&
|
|
!b44_readphy(bp, MII_LPA, &remote_adv))
|
|
b44_set_flow_ctrl(bp, local_adv, remote_adv);
|
|
|
|
/* Link now up */
|
|
netif_carrier_on(bp->dev);
|
|
b44_link_report(bp);
|
|
} else if (netif_carrier_ok(bp->dev) && !(bmsr & BMSR_LSTATUS)) {
|
|
/* Link now down */
|
|
netif_carrier_off(bp->dev);
|
|
b44_link_report(bp);
|
|
}
|
|
|
|
if (bmsr & BMSR_RFAULT)
|
|
netdev_warn(bp->dev, "Remote fault detected in PHY\n");
|
|
if (bmsr & BMSR_JCD)
|
|
netdev_warn(bp->dev, "Jabber detected in PHY\n");
|
|
}
|
|
}
|
|
|
|
static void b44_timer(unsigned long __opaque)
|
|
{
|
|
struct b44 *bp = (struct b44 *) __opaque;
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
|
|
b44_check_phy(bp);
|
|
|
|
b44_stats_update(bp);
|
|
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
mod_timer(&bp->timer, round_jiffies(jiffies + HZ));
|
|
}
|
|
|
|
static void b44_tx(struct b44 *bp)
|
|
{
|
|
u32 cur, cons;
|
|
unsigned bytes_compl = 0, pkts_compl = 0;
|
|
|
|
cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK;
|
|
cur /= sizeof(struct dma_desc);
|
|
|
|
/* XXX needs updating when NETIF_F_SG is supported */
|
|
for (cons = bp->tx_cons; cons != cur; cons = NEXT_TX(cons)) {
|
|
struct ring_info *rp = &bp->tx_buffers[cons];
|
|
struct sk_buff *skb = rp->skb;
|
|
|
|
BUG_ON(skb == NULL);
|
|
|
|
dma_unmap_single(bp->sdev->dma_dev,
|
|
rp->mapping,
|
|
skb->len,
|
|
DMA_TO_DEVICE);
|
|
rp->skb = NULL;
|
|
|
|
bytes_compl += skb->len;
|
|
pkts_compl++;
|
|
|
|
dev_kfree_skb_irq(skb);
|
|
}
|
|
|
|
netdev_completed_queue(bp->dev, pkts_compl, bytes_compl);
|
|
bp->tx_cons = cons;
|
|
if (netif_queue_stopped(bp->dev) &&
|
|
TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH)
|
|
netif_wake_queue(bp->dev);
|
|
|
|
bw32(bp, B44_GPTIMER, 0);
|
|
}
|
|
|
|
/* Works like this. This chip writes a 'struct rx_header" 30 bytes
|
|
* before the DMA address you give it. So we allocate 30 more bytes
|
|
* for the RX buffer, DMA map all of it, skb_reserve the 30 bytes, then
|
|
* point the chip at 30 bytes past where the rx_header will go.
|
|
*/
|
|
static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
|
|
{
|
|
struct dma_desc *dp;
|
|
struct ring_info *src_map, *map;
|
|
struct rx_header *rh;
|
|
struct sk_buff *skb;
|
|
dma_addr_t mapping;
|
|
int dest_idx;
|
|
u32 ctrl;
|
|
|
|
src_map = NULL;
|
|
if (src_idx >= 0)
|
|
src_map = &bp->rx_buffers[src_idx];
|
|
dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
|
|
map = &bp->rx_buffers[dest_idx];
|
|
skb = netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ);
|
|
if (skb == NULL)
|
|
return -ENOMEM;
|
|
|
|
mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
|
|
RX_PKT_BUF_SZ,
|
|
DMA_FROM_DEVICE);
|
|
|
|
/* Hardware bug work-around, the chip is unable to do PCI DMA
|
|
to/from anything above 1GB :-( */
|
|
if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
|
|
mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
|
|
/* Sigh... */
|
|
if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
|
|
dma_unmap_single(bp->sdev->dma_dev, mapping,
|
|
RX_PKT_BUF_SZ, DMA_FROM_DEVICE);
|
|
dev_kfree_skb_any(skb);
|
|
skb = alloc_skb(RX_PKT_BUF_SZ, GFP_ATOMIC | GFP_DMA);
|
|
if (skb == NULL)
|
|
return -ENOMEM;
|
|
mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
|
|
RX_PKT_BUF_SZ,
|
|
DMA_FROM_DEVICE);
|
|
if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
|
|
mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
|
|
if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
|
|
dma_unmap_single(bp->sdev->dma_dev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE);
|
|
dev_kfree_skb_any(skb);
|
|
return -ENOMEM;
|
|
}
|
|
bp->force_copybreak = 1;
|
|
}
|
|
|
|
rh = (struct rx_header *) skb->data;
|
|
|
|
rh->len = 0;
|
|
rh->flags = 0;
|
|
|
|
map->skb = skb;
|
|
map->mapping = mapping;
|
|
|
|
if (src_map != NULL)
|
|
src_map->skb = NULL;
|
|
|
|
ctrl = (DESC_CTRL_LEN & RX_PKT_BUF_SZ);
|
|
if (dest_idx == (B44_RX_RING_SIZE - 1))
|
|
ctrl |= DESC_CTRL_EOT;
|
|
|
|
dp = &bp->rx_ring[dest_idx];
|
|
dp->ctrl = cpu_to_le32(ctrl);
|
|
dp->addr = cpu_to_le32((u32) mapping + bp->dma_offset);
|
|
|
|
if (bp->flags & B44_FLAG_RX_RING_HACK)
|
|
b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
|
|
dest_idx * sizeof(*dp),
|
|
DMA_BIDIRECTIONAL);
|
|
|
|
return RX_PKT_BUF_SZ;
|
|
}
|
|
|
|
static void b44_recycle_rx(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
|
|
{
|
|
struct dma_desc *src_desc, *dest_desc;
|
|
struct ring_info *src_map, *dest_map;
|
|
struct rx_header *rh;
|
|
int dest_idx;
|
|
__le32 ctrl;
|
|
|
|
dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
|
|
dest_desc = &bp->rx_ring[dest_idx];
|
|
dest_map = &bp->rx_buffers[dest_idx];
|
|
src_desc = &bp->rx_ring[src_idx];
|
|
src_map = &bp->rx_buffers[src_idx];
|
|
|
|
dest_map->skb = src_map->skb;
|
|
rh = (struct rx_header *) src_map->skb->data;
|
|
rh->len = 0;
|
|
rh->flags = 0;
|
|
dest_map->mapping = src_map->mapping;
|
|
|
|
if (bp->flags & B44_FLAG_RX_RING_HACK)
|
|
b44_sync_dma_desc_for_cpu(bp->sdev, bp->rx_ring_dma,
|
|
src_idx * sizeof(*src_desc),
|
|
DMA_BIDIRECTIONAL);
|
|
|
|
ctrl = src_desc->ctrl;
|
|
if (dest_idx == (B44_RX_RING_SIZE - 1))
|
|
ctrl |= cpu_to_le32(DESC_CTRL_EOT);
|
|
else
|
|
ctrl &= cpu_to_le32(~DESC_CTRL_EOT);
|
|
|
|
dest_desc->ctrl = ctrl;
|
|
dest_desc->addr = src_desc->addr;
|
|
|
|
src_map->skb = NULL;
|
|
|
|
if (bp->flags & B44_FLAG_RX_RING_HACK)
|
|
b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
|
|
dest_idx * sizeof(*dest_desc),
|
|
DMA_BIDIRECTIONAL);
|
|
|
|
dma_sync_single_for_device(bp->sdev->dma_dev, dest_map->mapping,
|
|
RX_PKT_BUF_SZ,
|
|
DMA_FROM_DEVICE);
|
|
}
|
|
|
|
static int b44_rx(struct b44 *bp, int budget)
|
|
{
|
|
int received;
|
|
u32 cons, prod;
|
|
|
|
received = 0;
|
|
prod = br32(bp, B44_DMARX_STAT) & DMARX_STAT_CDMASK;
|
|
prod /= sizeof(struct dma_desc);
|
|
cons = bp->rx_cons;
|
|
|
|
while (cons != prod && budget > 0) {
|
|
struct ring_info *rp = &bp->rx_buffers[cons];
|
|
struct sk_buff *skb = rp->skb;
|
|
dma_addr_t map = rp->mapping;
|
|
struct rx_header *rh;
|
|
u16 len;
|
|
|
|
dma_sync_single_for_cpu(bp->sdev->dma_dev, map,
|
|
RX_PKT_BUF_SZ,
|
|
DMA_FROM_DEVICE);
|
|
rh = (struct rx_header *) skb->data;
|
|
len = le16_to_cpu(rh->len);
|
|
if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) ||
|
|
(rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) {
|
|
drop_it:
|
|
b44_recycle_rx(bp, cons, bp->rx_prod);
|
|
drop_it_no_recycle:
|
|
bp->dev->stats.rx_dropped++;
|
|
goto next_pkt;
|
|
}
|
|
|
|
if (len == 0) {
|
|
int i = 0;
|
|
|
|
do {
|
|
udelay(2);
|
|
barrier();
|
|
len = le16_to_cpu(rh->len);
|
|
} while (len == 0 && i++ < 5);
|
|
if (len == 0)
|
|
goto drop_it;
|
|
}
|
|
|
|
/* Omit CRC. */
|
|
len -= 4;
|
|
|
|
if (!bp->force_copybreak && len > RX_COPY_THRESHOLD) {
|
|
int skb_size;
|
|
skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod);
|
|
if (skb_size < 0)
|
|
goto drop_it;
|
|
dma_unmap_single(bp->sdev->dma_dev, map,
|
|
skb_size, DMA_FROM_DEVICE);
|
|
/* Leave out rx_header */
|
|
skb_put(skb, len + RX_PKT_OFFSET);
|
|
skb_pull(skb, RX_PKT_OFFSET);
|
|
} else {
|
|
struct sk_buff *copy_skb;
|
|
|
|
b44_recycle_rx(bp, cons, bp->rx_prod);
|
|
copy_skb = netdev_alloc_skb_ip_align(bp->dev, len);
|
|
if (copy_skb == NULL)
|
|
goto drop_it_no_recycle;
|
|
|
|
skb_put(copy_skb, len);
|
|
/* DMA sync done above, copy just the actual packet */
|
|
skb_copy_from_linear_data_offset(skb, RX_PKT_OFFSET,
|
|
copy_skb->data, len);
|
|
skb = copy_skb;
|
|
}
|
|
skb_checksum_none_assert(skb);
|
|
skb->protocol = eth_type_trans(skb, bp->dev);
|
|
netif_receive_skb(skb);
|
|
received++;
|
|
budget--;
|
|
next_pkt:
|
|
bp->rx_prod = (bp->rx_prod + 1) &
|
|
(B44_RX_RING_SIZE - 1);
|
|
cons = (cons + 1) & (B44_RX_RING_SIZE - 1);
|
|
}
|
|
|
|
bp->rx_cons = cons;
|
|
bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc));
|
|
|
|
return received;
|
|
}
|
|
|
|
static int b44_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct b44 *bp = container_of(napi, struct b44, napi);
|
|
int work_done;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&bp->lock, flags);
|
|
|
|
if (bp->istat & (ISTAT_TX | ISTAT_TO)) {
|
|
/* spin_lock(&bp->tx_lock); */
|
|
b44_tx(bp);
|
|
/* spin_unlock(&bp->tx_lock); */
|
|
}
|
|
if (bp->istat & ISTAT_RFO) { /* fast recovery, in ~20msec */
|
|
bp->istat &= ~ISTAT_RFO;
|
|
b44_disable_ints(bp);
|
|
ssb_device_enable(bp->sdev, 0); /* resets ISTAT_RFO */
|
|
b44_init_rings(bp);
|
|
b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
|
|
netif_wake_queue(bp->dev);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&bp->lock, flags);
|
|
|
|
work_done = 0;
|
|
if (bp->istat & ISTAT_RX)
|
|
work_done += b44_rx(bp, budget);
|
|
|
|
if (bp->istat & ISTAT_ERRORS) {
|
|
spin_lock_irqsave(&bp->lock, flags);
|
|
b44_halt(bp);
|
|
b44_init_rings(bp);
|
|
b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
|
|
netif_wake_queue(bp->dev);
|
|
spin_unlock_irqrestore(&bp->lock, flags);
|
|
work_done = 0;
|
|
}
|
|
|
|
if (work_done < budget) {
|
|
napi_complete(napi);
|
|
b44_enable_ints(bp);
|
|
}
|
|
|
|
return work_done;
|
|
}
|
|
|
|
static irqreturn_t b44_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = dev_id;
|
|
struct b44 *bp = netdev_priv(dev);
|
|
u32 istat, imask;
|
|
int handled = 0;
|
|
|
|
spin_lock(&bp->lock);
|
|
|
|
istat = br32(bp, B44_ISTAT);
|
|
imask = br32(bp, B44_IMASK);
|
|
|
|
/* The interrupt mask register controls which interrupt bits
|
|
* will actually raise an interrupt to the CPU when set by hw/firmware,
|
|
* but doesn't mask off the bits.
|
|
*/
|
|
istat &= imask;
|
|
if (istat) {
|
|
handled = 1;
|
|
|
|
if (unlikely(!netif_running(dev))) {
|
|
netdev_info(dev, "late interrupt\n");
|
|
goto irq_ack;
|
|
}
|
|
|
|
if (napi_schedule_prep(&bp->napi)) {
|
|
/* NOTE: These writes are posted by the readback of
|
|
* the ISTAT register below.
|
|
*/
|
|
bp->istat = istat;
|
|
__b44_disable_ints(bp);
|
|
__napi_schedule(&bp->napi);
|
|
}
|
|
|
|
irq_ack:
|
|
bw32(bp, B44_ISTAT, istat);
|
|
br32(bp, B44_ISTAT);
|
|
}
|
|
spin_unlock(&bp->lock);
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
static void b44_tx_timeout(struct net_device *dev)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
netdev_err(dev, "transmit timed out, resetting\n");
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
|
|
b44_halt(bp);
|
|
b44_init_rings(bp);
|
|
b44_init_hw(bp, B44_FULL_RESET);
|
|
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
b44_enable_ints(bp);
|
|
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
static netdev_tx_t b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
int rc = NETDEV_TX_OK;
|
|
dma_addr_t mapping;
|
|
u32 len, entry, ctrl;
|
|
unsigned long flags;
|
|
|
|
len = skb->len;
|
|
spin_lock_irqsave(&bp->lock, flags);
|
|
|
|
/* This is a hard error, log it. */
|
|
if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) {
|
|
netif_stop_queue(dev);
|
|
netdev_err(dev, "BUG! Tx Ring full when queue awake!\n");
|
|
goto err_out;
|
|
}
|
|
|
|
mapping = dma_map_single(bp->sdev->dma_dev, skb->data, len, DMA_TO_DEVICE);
|
|
if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
|
|
struct sk_buff *bounce_skb;
|
|
|
|
/* Chip can't handle DMA to/from >1GB, use bounce buffer */
|
|
if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
|
|
dma_unmap_single(bp->sdev->dma_dev, mapping, len,
|
|
DMA_TO_DEVICE);
|
|
|
|
bounce_skb = alloc_skb(len, GFP_ATOMIC | GFP_DMA);
|
|
if (!bounce_skb)
|
|
goto err_out;
|
|
|
|
mapping = dma_map_single(bp->sdev->dma_dev, bounce_skb->data,
|
|
len, DMA_TO_DEVICE);
|
|
if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
|
|
if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
|
|
dma_unmap_single(bp->sdev->dma_dev, mapping,
|
|
len, DMA_TO_DEVICE);
|
|
dev_kfree_skb_any(bounce_skb);
|
|
goto err_out;
|
|
}
|
|
|
|
skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len);
|
|
dev_kfree_skb_any(skb);
|
|
skb = bounce_skb;
|
|
}
|
|
|
|
entry = bp->tx_prod;
|
|
bp->tx_buffers[entry].skb = skb;
|
|
bp->tx_buffers[entry].mapping = mapping;
|
|
|
|
ctrl = (len & DESC_CTRL_LEN);
|
|
ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF;
|
|
if (entry == (B44_TX_RING_SIZE - 1))
|
|
ctrl |= DESC_CTRL_EOT;
|
|
|
|
bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl);
|
|
bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset);
|
|
|
|
if (bp->flags & B44_FLAG_TX_RING_HACK)
|
|
b44_sync_dma_desc_for_device(bp->sdev, bp->tx_ring_dma,
|
|
entry * sizeof(bp->tx_ring[0]),
|
|
DMA_TO_DEVICE);
|
|
|
|
entry = NEXT_TX(entry);
|
|
|
|
bp->tx_prod = entry;
|
|
|
|
wmb();
|
|
|
|
bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
|
|
if (bp->flags & B44_FLAG_BUGGY_TXPTR)
|
|
bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
|
|
if (bp->flags & B44_FLAG_REORDER_BUG)
|
|
br32(bp, B44_DMATX_PTR);
|
|
|
|
netdev_sent_queue(dev, skb->len);
|
|
|
|
if (TX_BUFFS_AVAIL(bp) < 1)
|
|
netif_stop_queue(dev);
|
|
|
|
out_unlock:
|
|
spin_unlock_irqrestore(&bp->lock, flags);
|
|
|
|
return rc;
|
|
|
|
err_out:
|
|
rc = NETDEV_TX_BUSY;
|
|
goto out_unlock;
|
|
}
|
|
|
|
static int b44_change_mtu(struct net_device *dev, int new_mtu)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU)
|
|
return -EINVAL;
|
|
|
|
if (!netif_running(dev)) {
|
|
/* We'll just catch it later when the
|
|
* device is up'd.
|
|
*/
|
|
dev->mtu = new_mtu;
|
|
return 0;
|
|
}
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
b44_halt(bp);
|
|
dev->mtu = new_mtu;
|
|
b44_init_rings(bp);
|
|
b44_init_hw(bp, B44_FULL_RESET);
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
b44_enable_ints(bp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Free up pending packets in all rx/tx rings.
|
|
*
|
|
* The chip has been shut down and the driver detached from
|
|
* the networking, so no interrupts or new tx packets will
|
|
* end up in the driver. bp->lock is not held and we are not
|
|
* in an interrupt context and thus may sleep.
|
|
*/
|
|
static void b44_free_rings(struct b44 *bp)
|
|
{
|
|
struct ring_info *rp;
|
|
int i;
|
|
|
|
for (i = 0; i < B44_RX_RING_SIZE; i++) {
|
|
rp = &bp->rx_buffers[i];
|
|
|
|
if (rp->skb == NULL)
|
|
continue;
|
|
dma_unmap_single(bp->sdev->dma_dev, rp->mapping, RX_PKT_BUF_SZ,
|
|
DMA_FROM_DEVICE);
|
|
dev_kfree_skb_any(rp->skb);
|
|
rp->skb = NULL;
|
|
}
|
|
|
|
/* XXX needs changes once NETIF_F_SG is set... */
|
|
for (i = 0; i < B44_TX_RING_SIZE; i++) {
|
|
rp = &bp->tx_buffers[i];
|
|
|
|
if (rp->skb == NULL)
|
|
continue;
|
|
dma_unmap_single(bp->sdev->dma_dev, rp->mapping, rp->skb->len,
|
|
DMA_TO_DEVICE);
|
|
dev_kfree_skb_any(rp->skb);
|
|
rp->skb = NULL;
|
|
}
|
|
}
|
|
|
|
/* Initialize tx/rx rings for packet processing.
|
|
*
|
|
* The chip has been shut down and the driver detached from
|
|
* the networking, so no interrupts or new tx packets will
|
|
* end up in the driver.
|
|
*/
|
|
static void b44_init_rings(struct b44 *bp)
|
|
{
|
|
int i;
|
|
|
|
b44_free_rings(bp);
|
|
|
|
memset(bp->rx_ring, 0, B44_RX_RING_BYTES);
|
|
memset(bp->tx_ring, 0, B44_TX_RING_BYTES);
|
|
|
|
if (bp->flags & B44_FLAG_RX_RING_HACK)
|
|
dma_sync_single_for_device(bp->sdev->dma_dev, bp->rx_ring_dma,
|
|
DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
|
|
|
|
if (bp->flags & B44_FLAG_TX_RING_HACK)
|
|
dma_sync_single_for_device(bp->sdev->dma_dev, bp->tx_ring_dma,
|
|
DMA_TABLE_BYTES, DMA_TO_DEVICE);
|
|
|
|
for (i = 0; i < bp->rx_pending; i++) {
|
|
if (b44_alloc_rx_skb(bp, -1, i) < 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Must not be invoked with interrupt sources disabled and
|
|
* the hardware shutdown down.
|
|
*/
|
|
static void b44_free_consistent(struct b44 *bp)
|
|
{
|
|
kfree(bp->rx_buffers);
|
|
bp->rx_buffers = NULL;
|
|
kfree(bp->tx_buffers);
|
|
bp->tx_buffers = NULL;
|
|
if (bp->rx_ring) {
|
|
if (bp->flags & B44_FLAG_RX_RING_HACK) {
|
|
dma_unmap_single(bp->sdev->dma_dev, bp->rx_ring_dma,
|
|
DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
|
|
kfree(bp->rx_ring);
|
|
} else
|
|
dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
|
|
bp->rx_ring, bp->rx_ring_dma);
|
|
bp->rx_ring = NULL;
|
|
bp->flags &= ~B44_FLAG_RX_RING_HACK;
|
|
}
|
|
if (bp->tx_ring) {
|
|
if (bp->flags & B44_FLAG_TX_RING_HACK) {
|
|
dma_unmap_single(bp->sdev->dma_dev, bp->tx_ring_dma,
|
|
DMA_TABLE_BYTES, DMA_TO_DEVICE);
|
|
kfree(bp->tx_ring);
|
|
} else
|
|
dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
|
|
bp->tx_ring, bp->tx_ring_dma);
|
|
bp->tx_ring = NULL;
|
|
bp->flags &= ~B44_FLAG_TX_RING_HACK;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Must not be invoked with interrupt sources disabled and
|
|
* the hardware shutdown down. Can sleep.
|
|
*/
|
|
static int b44_alloc_consistent(struct b44 *bp, gfp_t gfp)
|
|
{
|
|
int size;
|
|
|
|
size = B44_RX_RING_SIZE * sizeof(struct ring_info);
|
|
bp->rx_buffers = kzalloc(size, gfp);
|
|
if (!bp->rx_buffers)
|
|
goto out_err;
|
|
|
|
size = B44_TX_RING_SIZE * sizeof(struct ring_info);
|
|
bp->tx_buffers = kzalloc(size, gfp);
|
|
if (!bp->tx_buffers)
|
|
goto out_err;
|
|
|
|
size = DMA_TABLE_BYTES;
|
|
bp->rx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
|
|
&bp->rx_ring_dma, gfp);
|
|
if (!bp->rx_ring) {
|
|
/* Allocation may have failed due to pci_alloc_consistent
|
|
insisting on use of GFP_DMA, which is more restrictive
|
|
than necessary... */
|
|
struct dma_desc *rx_ring;
|
|
dma_addr_t rx_ring_dma;
|
|
|
|
rx_ring = kzalloc(size, gfp);
|
|
if (!rx_ring)
|
|
goto out_err;
|
|
|
|
rx_ring_dma = dma_map_single(bp->sdev->dma_dev, rx_ring,
|
|
DMA_TABLE_BYTES,
|
|
DMA_BIDIRECTIONAL);
|
|
|
|
if (dma_mapping_error(bp->sdev->dma_dev, rx_ring_dma) ||
|
|
rx_ring_dma + size > DMA_BIT_MASK(30)) {
|
|
kfree(rx_ring);
|
|
goto out_err;
|
|
}
|
|
|
|
bp->rx_ring = rx_ring;
|
|
bp->rx_ring_dma = rx_ring_dma;
|
|
bp->flags |= B44_FLAG_RX_RING_HACK;
|
|
}
|
|
|
|
bp->tx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
|
|
&bp->tx_ring_dma, gfp);
|
|
if (!bp->tx_ring) {
|
|
/* Allocation may have failed due to ssb_dma_alloc_consistent
|
|
insisting on use of GFP_DMA, which is more restrictive
|
|
than necessary... */
|
|
struct dma_desc *tx_ring;
|
|
dma_addr_t tx_ring_dma;
|
|
|
|
tx_ring = kzalloc(size, gfp);
|
|
if (!tx_ring)
|
|
goto out_err;
|
|
|
|
tx_ring_dma = dma_map_single(bp->sdev->dma_dev, tx_ring,
|
|
DMA_TABLE_BYTES,
|
|
DMA_TO_DEVICE);
|
|
|
|
if (dma_mapping_error(bp->sdev->dma_dev, tx_ring_dma) ||
|
|
tx_ring_dma + size > DMA_BIT_MASK(30)) {
|
|
kfree(tx_ring);
|
|
goto out_err;
|
|
}
|
|
|
|
bp->tx_ring = tx_ring;
|
|
bp->tx_ring_dma = tx_ring_dma;
|
|
bp->flags |= B44_FLAG_TX_RING_HACK;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_err:
|
|
b44_free_consistent(bp);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* bp->lock is held. */
|
|
static void b44_clear_stats(struct b44 *bp)
|
|
{
|
|
unsigned long reg;
|
|
|
|
bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
|
|
for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL)
|
|
br32(bp, reg);
|
|
for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL)
|
|
br32(bp, reg);
|
|
}
|
|
|
|
/* bp->lock is held. */
|
|
static void b44_chip_reset(struct b44 *bp, int reset_kind)
|
|
{
|
|
struct ssb_device *sdev = bp->sdev;
|
|
bool was_enabled;
|
|
|
|
was_enabled = ssb_device_is_enabled(bp->sdev);
|
|
|
|
ssb_device_enable(bp->sdev, 0);
|
|
ssb_pcicore_dev_irqvecs_enable(&sdev->bus->pcicore, sdev);
|
|
|
|
if (was_enabled) {
|
|
bw32(bp, B44_RCV_LAZY, 0);
|
|
bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE);
|
|
b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1);
|
|
bw32(bp, B44_DMATX_CTRL, 0);
|
|
bp->tx_prod = bp->tx_cons = 0;
|
|
if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) {
|
|
b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE,
|
|
100, 0);
|
|
}
|
|
bw32(bp, B44_DMARX_CTRL, 0);
|
|
bp->rx_prod = bp->rx_cons = 0;
|
|
}
|
|
|
|
b44_clear_stats(bp);
|
|
|
|
/*
|
|
* Don't enable PHY if we are doing a partial reset
|
|
* we are probably going to power down
|
|
*/
|
|
if (reset_kind == B44_CHIP_RESET_PARTIAL)
|
|
return;
|
|
|
|
switch (sdev->bus->bustype) {
|
|
case SSB_BUSTYPE_SSB:
|
|
bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
|
|
(DIV_ROUND_CLOSEST(ssb_clockspeed(sdev->bus),
|
|
B44_MDC_RATIO)
|
|
& MDIO_CTRL_MAXF_MASK)));
|
|
break;
|
|
case SSB_BUSTYPE_PCI:
|
|
bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
|
|
(0x0d & MDIO_CTRL_MAXF_MASK)));
|
|
break;
|
|
case SSB_BUSTYPE_PCMCIA:
|
|
case SSB_BUSTYPE_SDIO:
|
|
WARN_ON(1); /* A device with this bus does not exist. */
|
|
break;
|
|
}
|
|
|
|
br32(bp, B44_MDIO_CTRL);
|
|
|
|
if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) {
|
|
bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL);
|
|
br32(bp, B44_ENET_CTRL);
|
|
bp->flags |= B44_FLAG_EXTERNAL_PHY;
|
|
} else {
|
|
u32 val = br32(bp, B44_DEVCTRL);
|
|
|
|
if (val & DEVCTRL_EPR) {
|
|
bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR));
|
|
br32(bp, B44_DEVCTRL);
|
|
udelay(100);
|
|
}
|
|
bp->flags &= ~B44_FLAG_EXTERNAL_PHY;
|
|
}
|
|
}
|
|
|
|
/* bp->lock is held. */
|
|
static void b44_halt(struct b44 *bp)
|
|
{
|
|
b44_disable_ints(bp);
|
|
/* reset PHY */
|
|
b44_phy_reset(bp);
|
|
/* power down PHY */
|
|
netdev_info(bp->dev, "powering down PHY\n");
|
|
bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN);
|
|
/* now reset the chip, but without enabling the MAC&PHY
|
|
* part of it. This has to be done _after_ we shut down the PHY */
|
|
if (bp->flags & B44_FLAG_EXTERNAL_PHY)
|
|
b44_chip_reset(bp, B44_CHIP_RESET_FULL);
|
|
else
|
|
b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
|
|
}
|
|
|
|
/* bp->lock is held. */
|
|
static void __b44_set_mac_addr(struct b44 *bp)
|
|
{
|
|
bw32(bp, B44_CAM_CTRL, 0);
|
|
if (!(bp->dev->flags & IFF_PROMISC)) {
|
|
u32 val;
|
|
|
|
__b44_cam_write(bp, bp->dev->dev_addr, 0);
|
|
val = br32(bp, B44_CAM_CTRL);
|
|
bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
|
|
}
|
|
}
|
|
|
|
static int b44_set_mac_addr(struct net_device *dev, void *p)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
struct sockaddr *addr = p;
|
|
u32 val;
|
|
|
|
if (netif_running(dev))
|
|
return -EBUSY;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EINVAL;
|
|
|
|
memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
|
|
val = br32(bp, B44_RXCONFIG);
|
|
if (!(val & RXCONFIG_CAM_ABSENT))
|
|
__b44_set_mac_addr(bp);
|
|
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Called at device open time to get the chip ready for
|
|
* packet processing. Invoked with bp->lock held.
|
|
*/
|
|
static void __b44_set_rx_mode(struct net_device *);
|
|
static void b44_init_hw(struct b44 *bp, int reset_kind)
|
|
{
|
|
u32 val;
|
|
|
|
b44_chip_reset(bp, B44_CHIP_RESET_FULL);
|
|
if (reset_kind == B44_FULL_RESET) {
|
|
b44_phy_reset(bp);
|
|
b44_setup_phy(bp);
|
|
}
|
|
|
|
/* Enable CRC32, set proper LED modes and power on PHY */
|
|
bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL);
|
|
bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT));
|
|
|
|
/* This sets the MAC address too. */
|
|
__b44_set_rx_mode(bp->dev);
|
|
|
|
/* MTU + eth header + possible VLAN tag + struct rx_header */
|
|
bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
|
|
bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
|
|
|
|
bw32(bp, B44_TX_WMARK, 56); /* XXX magic */
|
|
if (reset_kind == B44_PARTIAL_RESET) {
|
|
bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
|
|
(RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
|
|
} else {
|
|
bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE);
|
|
bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset);
|
|
bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
|
|
(RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
|
|
bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset);
|
|
|
|
bw32(bp, B44_DMARX_PTR, bp->rx_pending);
|
|
bp->rx_prod = bp->rx_pending;
|
|
|
|
bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
|
|
}
|
|
|
|
val = br32(bp, B44_ENET_CTRL);
|
|
bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE));
|
|
|
|
netdev_reset_queue(bp->dev);
|
|
}
|
|
|
|
static int b44_open(struct net_device *dev)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
int err;
|
|
|
|
err = b44_alloc_consistent(bp, GFP_KERNEL);
|
|
if (err)
|
|
goto out;
|
|
|
|
napi_enable(&bp->napi);
|
|
|
|
b44_init_rings(bp);
|
|
b44_init_hw(bp, B44_FULL_RESET);
|
|
|
|
b44_check_phy(bp);
|
|
|
|
err = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
|
|
if (unlikely(err < 0)) {
|
|
napi_disable(&bp->napi);
|
|
b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
|
|
b44_free_rings(bp);
|
|
b44_free_consistent(bp);
|
|
goto out;
|
|
}
|
|
|
|
init_timer(&bp->timer);
|
|
bp->timer.expires = jiffies + HZ;
|
|
bp->timer.data = (unsigned long) bp;
|
|
bp->timer.function = b44_timer;
|
|
add_timer(&bp->timer);
|
|
|
|
b44_enable_ints(bp);
|
|
netif_start_queue(dev);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
/*
|
|
* Polling receive - used by netconsole and other diagnostic tools
|
|
* to allow network i/o with interrupts disabled.
|
|
*/
|
|
static void b44_poll_controller(struct net_device *dev)
|
|
{
|
|
disable_irq(dev->irq);
|
|
b44_interrupt(dev->irq, dev);
|
|
enable_irq(dev->irq);
|
|
}
|
|
#endif
|
|
|
|
static void bwfilter_table(struct b44 *bp, u8 *pp, u32 bytes, u32 table_offset)
|
|
{
|
|
u32 i;
|
|
u32 *pattern = (u32 *) pp;
|
|
|
|
for (i = 0; i < bytes; i += sizeof(u32)) {
|
|
bw32(bp, B44_FILT_ADDR, table_offset + i);
|
|
bw32(bp, B44_FILT_DATA, pattern[i / sizeof(u32)]);
|
|
}
|
|
}
|
|
|
|
static int b44_magic_pattern(u8 *macaddr, u8 *ppattern, u8 *pmask, int offset)
|
|
{
|
|
int magicsync = 6;
|
|
int k, j, len = offset;
|
|
int ethaddr_bytes = ETH_ALEN;
|
|
|
|
memset(ppattern + offset, 0xff, magicsync);
|
|
for (j = 0; j < magicsync; j++)
|
|
set_bit(len++, (unsigned long *) pmask);
|
|
|
|
for (j = 0; j < B44_MAX_PATTERNS; j++) {
|
|
if ((B44_PATTERN_SIZE - len) >= ETH_ALEN)
|
|
ethaddr_bytes = ETH_ALEN;
|
|
else
|
|
ethaddr_bytes = B44_PATTERN_SIZE - len;
|
|
if (ethaddr_bytes <=0)
|
|
break;
|
|
for (k = 0; k< ethaddr_bytes; k++) {
|
|
ppattern[offset + magicsync +
|
|
(j * ETH_ALEN) + k] = macaddr[k];
|
|
set_bit(len++, (unsigned long *) pmask);
|
|
}
|
|
}
|
|
return len - 1;
|
|
}
|
|
|
|
/* Setup magic packet patterns in the b44 WOL
|
|
* pattern matching filter.
|
|
*/
|
|
static void b44_setup_pseudo_magicp(struct b44 *bp)
|
|
{
|
|
|
|
u32 val;
|
|
int plen0, plen1, plen2;
|
|
u8 *pwol_pattern;
|
|
u8 pwol_mask[B44_PMASK_SIZE];
|
|
|
|
pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL);
|
|
if (!pwol_pattern)
|
|
return;
|
|
|
|
/* Ipv4 magic packet pattern - pattern 0.*/
|
|
memset(pwol_mask, 0, B44_PMASK_SIZE);
|
|
plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
|
|
B44_ETHIPV4UDP_HLEN);
|
|
|
|
bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, B44_PATTERN_BASE);
|
|
bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, B44_PMASK_BASE);
|
|
|
|
/* Raw ethernet II magic packet pattern - pattern 1 */
|
|
memset(pwol_pattern, 0, B44_PATTERN_SIZE);
|
|
memset(pwol_mask, 0, B44_PMASK_SIZE);
|
|
plen1 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
|
|
ETH_HLEN);
|
|
|
|
bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
|
|
B44_PATTERN_BASE + B44_PATTERN_SIZE);
|
|
bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
|
|
B44_PMASK_BASE + B44_PMASK_SIZE);
|
|
|
|
/* Ipv6 magic packet pattern - pattern 2 */
|
|
memset(pwol_pattern, 0, B44_PATTERN_SIZE);
|
|
memset(pwol_mask, 0, B44_PMASK_SIZE);
|
|
plen2 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
|
|
B44_ETHIPV6UDP_HLEN);
|
|
|
|
bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
|
|
B44_PATTERN_BASE + B44_PATTERN_SIZE + B44_PATTERN_SIZE);
|
|
bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
|
|
B44_PMASK_BASE + B44_PMASK_SIZE + B44_PMASK_SIZE);
|
|
|
|
kfree(pwol_pattern);
|
|
|
|
/* set these pattern's lengths: one less than each real length */
|
|
val = plen0 | (plen1 << 8) | (plen2 << 16) | WKUP_LEN_ENABLE_THREE;
|
|
bw32(bp, B44_WKUP_LEN, val);
|
|
|
|
/* enable wakeup pattern matching */
|
|
val = br32(bp, B44_DEVCTRL);
|
|
bw32(bp, B44_DEVCTRL, val | DEVCTRL_PFE);
|
|
|
|
}
|
|
|
|
#ifdef CONFIG_B44_PCI
|
|
static void b44_setup_wol_pci(struct b44 *bp)
|
|
{
|
|
u16 val;
|
|
|
|
if (bp->sdev->bus->bustype != SSB_BUSTYPE_SSB) {
|
|
bw32(bp, SSB_TMSLOW, br32(bp, SSB_TMSLOW) | SSB_TMSLOW_PE);
|
|
pci_read_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, &val);
|
|
pci_write_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, val | SSB_PE);
|
|
}
|
|
}
|
|
#else
|
|
static inline void b44_setup_wol_pci(struct b44 *bp) { }
|
|
#endif /* CONFIG_B44_PCI */
|
|
|
|
static void b44_setup_wol(struct b44 *bp)
|
|
{
|
|
u32 val;
|
|
|
|
bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI);
|
|
|
|
if (bp->flags & B44_FLAG_B0_ANDLATER) {
|
|
|
|
bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE);
|
|
|
|
val = bp->dev->dev_addr[2] << 24 |
|
|
bp->dev->dev_addr[3] << 16 |
|
|
bp->dev->dev_addr[4] << 8 |
|
|
bp->dev->dev_addr[5];
|
|
bw32(bp, B44_ADDR_LO, val);
|
|
|
|
val = bp->dev->dev_addr[0] << 8 |
|
|
bp->dev->dev_addr[1];
|
|
bw32(bp, B44_ADDR_HI, val);
|
|
|
|
val = br32(bp, B44_DEVCTRL);
|
|
bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE);
|
|
|
|
} else {
|
|
b44_setup_pseudo_magicp(bp);
|
|
}
|
|
b44_setup_wol_pci(bp);
|
|
}
|
|
|
|
static int b44_close(struct net_device *dev)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
napi_disable(&bp->napi);
|
|
|
|
del_timer_sync(&bp->timer);
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
|
|
b44_halt(bp);
|
|
b44_free_rings(bp);
|
|
netif_carrier_off(dev);
|
|
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
free_irq(dev->irq, dev);
|
|
|
|
if (bp->flags & B44_FLAG_WOL_ENABLE) {
|
|
b44_init_hw(bp, B44_PARTIAL_RESET);
|
|
b44_setup_wol(bp);
|
|
}
|
|
|
|
b44_free_consistent(bp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct rtnl_link_stats64 *b44_get_stats64(struct net_device *dev,
|
|
struct rtnl_link_stats64 *nstat)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
struct b44_hw_stats *hwstat = &bp->hw_stats;
|
|
unsigned int start;
|
|
|
|
do {
|
|
start = u64_stats_fetch_begin_bh(&hwstat->syncp);
|
|
|
|
/* Convert HW stats into rtnl_link_stats64 stats. */
|
|
nstat->rx_packets = hwstat->rx_pkts;
|
|
nstat->tx_packets = hwstat->tx_pkts;
|
|
nstat->rx_bytes = hwstat->rx_octets;
|
|
nstat->tx_bytes = hwstat->tx_octets;
|
|
nstat->tx_errors = (hwstat->tx_jabber_pkts +
|
|
hwstat->tx_oversize_pkts +
|
|
hwstat->tx_underruns +
|
|
hwstat->tx_excessive_cols +
|
|
hwstat->tx_late_cols);
|
|
nstat->multicast = hwstat->tx_multicast_pkts;
|
|
nstat->collisions = hwstat->tx_total_cols;
|
|
|
|
nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
|
|
hwstat->rx_undersize);
|
|
nstat->rx_over_errors = hwstat->rx_missed_pkts;
|
|
nstat->rx_frame_errors = hwstat->rx_align_errs;
|
|
nstat->rx_crc_errors = hwstat->rx_crc_errs;
|
|
nstat->rx_errors = (hwstat->rx_jabber_pkts +
|
|
hwstat->rx_oversize_pkts +
|
|
hwstat->rx_missed_pkts +
|
|
hwstat->rx_crc_align_errs +
|
|
hwstat->rx_undersize +
|
|
hwstat->rx_crc_errs +
|
|
hwstat->rx_align_errs +
|
|
hwstat->rx_symbol_errs);
|
|
|
|
nstat->tx_aborted_errors = hwstat->tx_underruns;
|
|
#if 0
|
|
/* Carrier lost counter seems to be broken for some devices */
|
|
nstat->tx_carrier_errors = hwstat->tx_carrier_lost;
|
|
#endif
|
|
} while (u64_stats_fetch_retry_bh(&hwstat->syncp, start));
|
|
|
|
return nstat;
|
|
}
|
|
|
|
static int __b44_load_mcast(struct b44 *bp, struct net_device *dev)
|
|
{
|
|
struct netdev_hw_addr *ha;
|
|
int i, num_ents;
|
|
|
|
num_ents = min_t(int, netdev_mc_count(dev), B44_MCAST_TABLE_SIZE);
|
|
i = 0;
|
|
netdev_for_each_mc_addr(ha, dev) {
|
|
if (i == num_ents)
|
|
break;
|
|
__b44_cam_write(bp, ha->addr, i++ + 1);
|
|
}
|
|
return i+1;
|
|
}
|
|
|
|
static void __b44_set_rx_mode(struct net_device *dev)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
u32 val;
|
|
|
|
val = br32(bp, B44_RXCONFIG);
|
|
val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI);
|
|
if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) {
|
|
val |= RXCONFIG_PROMISC;
|
|
bw32(bp, B44_RXCONFIG, val);
|
|
} else {
|
|
unsigned char zero[6] = {0, 0, 0, 0, 0, 0};
|
|
int i = 1;
|
|
|
|
__b44_set_mac_addr(bp);
|
|
|
|
if ((dev->flags & IFF_ALLMULTI) ||
|
|
(netdev_mc_count(dev) > B44_MCAST_TABLE_SIZE))
|
|
val |= RXCONFIG_ALLMULTI;
|
|
else
|
|
i = __b44_load_mcast(bp, dev);
|
|
|
|
for (; i < 64; i++)
|
|
__b44_cam_write(bp, zero, i);
|
|
|
|
bw32(bp, B44_RXCONFIG, val);
|
|
val = br32(bp, B44_CAM_CTRL);
|
|
bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
|
|
}
|
|
}
|
|
|
|
static void b44_set_rx_mode(struct net_device *dev)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
__b44_set_rx_mode(dev);
|
|
spin_unlock_irq(&bp->lock);
|
|
}
|
|
|
|
static u32 b44_get_msglevel(struct net_device *dev)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
return bp->msg_enable;
|
|
}
|
|
|
|
static void b44_set_msglevel(struct net_device *dev, u32 value)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
bp->msg_enable = value;
|
|
}
|
|
|
|
static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
struct ssb_bus *bus = bp->sdev->bus;
|
|
|
|
strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
|
|
strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
|
|
switch (bus->bustype) {
|
|
case SSB_BUSTYPE_PCI:
|
|
strlcpy(info->bus_info, pci_name(bus->host_pci), sizeof(info->bus_info));
|
|
break;
|
|
case SSB_BUSTYPE_SSB:
|
|
strlcpy(info->bus_info, "SSB", sizeof(info->bus_info));
|
|
break;
|
|
case SSB_BUSTYPE_PCMCIA:
|
|
case SSB_BUSTYPE_SDIO:
|
|
WARN_ON(1); /* A device with this bus does not exist. */
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int b44_nway_reset(struct net_device *dev)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
u32 bmcr;
|
|
int r;
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
b44_readphy(bp, MII_BMCR, &bmcr);
|
|
b44_readphy(bp, MII_BMCR, &bmcr);
|
|
r = -EINVAL;
|
|
if (bmcr & BMCR_ANENABLE) {
|
|
b44_writephy(bp, MII_BMCR,
|
|
bmcr | BMCR_ANRESTART);
|
|
r = 0;
|
|
}
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
if (bp->flags & B44_FLAG_EXTERNAL_PHY) {
|
|
BUG_ON(!bp->phydev);
|
|
return phy_ethtool_gset(bp->phydev, cmd);
|
|
}
|
|
|
|
cmd->supported = (SUPPORTED_Autoneg);
|
|
cmd->supported |= (SUPPORTED_100baseT_Half |
|
|
SUPPORTED_100baseT_Full |
|
|
SUPPORTED_10baseT_Half |
|
|
SUPPORTED_10baseT_Full |
|
|
SUPPORTED_MII);
|
|
|
|
cmd->advertising = 0;
|
|
if (bp->flags & B44_FLAG_ADV_10HALF)
|
|
cmd->advertising |= ADVERTISED_10baseT_Half;
|
|
if (bp->flags & B44_FLAG_ADV_10FULL)
|
|
cmd->advertising |= ADVERTISED_10baseT_Full;
|
|
if (bp->flags & B44_FLAG_ADV_100HALF)
|
|
cmd->advertising |= ADVERTISED_100baseT_Half;
|
|
if (bp->flags & B44_FLAG_ADV_100FULL)
|
|
cmd->advertising |= ADVERTISED_100baseT_Full;
|
|
cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause;
|
|
ethtool_cmd_speed_set(cmd, ((bp->flags & B44_FLAG_100_BASE_T) ?
|
|
SPEED_100 : SPEED_10));
|
|
cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ?
|
|
DUPLEX_FULL : DUPLEX_HALF;
|
|
cmd->port = 0;
|
|
cmd->phy_address = bp->phy_addr;
|
|
cmd->transceiver = (bp->flags & B44_FLAG_EXTERNAL_PHY) ?
|
|
XCVR_EXTERNAL : XCVR_INTERNAL;
|
|
cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ?
|
|
AUTONEG_DISABLE : AUTONEG_ENABLE;
|
|
if (cmd->autoneg == AUTONEG_ENABLE)
|
|
cmd->advertising |= ADVERTISED_Autoneg;
|
|
if (!netif_running(dev)){
|
|
ethtool_cmd_speed_set(cmd, 0);
|
|
cmd->duplex = 0xff;
|
|
}
|
|
cmd->maxtxpkt = 0;
|
|
cmd->maxrxpkt = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
u32 speed;
|
|
int ret;
|
|
|
|
if (bp->flags & B44_FLAG_EXTERNAL_PHY) {
|
|
BUG_ON(!bp->phydev);
|
|
spin_lock_irq(&bp->lock);
|
|
if (netif_running(dev))
|
|
b44_setup_phy(bp);
|
|
|
|
ret = phy_ethtool_sset(bp->phydev, cmd);
|
|
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
speed = ethtool_cmd_speed(cmd);
|
|
|
|
/* We do not support gigabit. */
|
|
if (cmd->autoneg == AUTONEG_ENABLE) {
|
|
if (cmd->advertising &
|
|
(ADVERTISED_1000baseT_Half |
|
|
ADVERTISED_1000baseT_Full))
|
|
return -EINVAL;
|
|
} else if ((speed != SPEED_100 &&
|
|
speed != SPEED_10) ||
|
|
(cmd->duplex != DUPLEX_HALF &&
|
|
cmd->duplex != DUPLEX_FULL)) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
|
|
if (cmd->autoneg == AUTONEG_ENABLE) {
|
|
bp->flags &= ~(B44_FLAG_FORCE_LINK |
|
|
B44_FLAG_100_BASE_T |
|
|
B44_FLAG_FULL_DUPLEX |
|
|
B44_FLAG_ADV_10HALF |
|
|
B44_FLAG_ADV_10FULL |
|
|
B44_FLAG_ADV_100HALF |
|
|
B44_FLAG_ADV_100FULL);
|
|
if (cmd->advertising == 0) {
|
|
bp->flags |= (B44_FLAG_ADV_10HALF |
|
|
B44_FLAG_ADV_10FULL |
|
|
B44_FLAG_ADV_100HALF |
|
|
B44_FLAG_ADV_100FULL);
|
|
} else {
|
|
if (cmd->advertising & ADVERTISED_10baseT_Half)
|
|
bp->flags |= B44_FLAG_ADV_10HALF;
|
|
if (cmd->advertising & ADVERTISED_10baseT_Full)
|
|
bp->flags |= B44_FLAG_ADV_10FULL;
|
|
if (cmd->advertising & ADVERTISED_100baseT_Half)
|
|
bp->flags |= B44_FLAG_ADV_100HALF;
|
|
if (cmd->advertising & ADVERTISED_100baseT_Full)
|
|
bp->flags |= B44_FLAG_ADV_100FULL;
|
|
}
|
|
} else {
|
|
bp->flags |= B44_FLAG_FORCE_LINK;
|
|
bp->flags &= ~(B44_FLAG_100_BASE_T | B44_FLAG_FULL_DUPLEX);
|
|
if (speed == SPEED_100)
|
|
bp->flags |= B44_FLAG_100_BASE_T;
|
|
if (cmd->duplex == DUPLEX_FULL)
|
|
bp->flags |= B44_FLAG_FULL_DUPLEX;
|
|
}
|
|
|
|
if (netif_running(dev))
|
|
b44_setup_phy(bp);
|
|
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void b44_get_ringparam(struct net_device *dev,
|
|
struct ethtool_ringparam *ering)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
ering->rx_max_pending = B44_RX_RING_SIZE - 1;
|
|
ering->rx_pending = bp->rx_pending;
|
|
|
|
/* XXX ethtool lacks a tx_max_pending, oops... */
|
|
}
|
|
|
|
static int b44_set_ringparam(struct net_device *dev,
|
|
struct ethtool_ringparam *ering)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
if ((ering->rx_pending > B44_RX_RING_SIZE - 1) ||
|
|
(ering->rx_mini_pending != 0) ||
|
|
(ering->rx_jumbo_pending != 0) ||
|
|
(ering->tx_pending > B44_TX_RING_SIZE - 1))
|
|
return -EINVAL;
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
|
|
bp->rx_pending = ering->rx_pending;
|
|
bp->tx_pending = ering->tx_pending;
|
|
|
|
b44_halt(bp);
|
|
b44_init_rings(bp);
|
|
b44_init_hw(bp, B44_FULL_RESET);
|
|
netif_wake_queue(bp->dev);
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
b44_enable_ints(bp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void b44_get_pauseparam(struct net_device *dev,
|
|
struct ethtool_pauseparam *epause)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
epause->autoneg =
|
|
(bp->flags & B44_FLAG_PAUSE_AUTO) != 0;
|
|
epause->rx_pause =
|
|
(bp->flags & B44_FLAG_RX_PAUSE) != 0;
|
|
epause->tx_pause =
|
|
(bp->flags & B44_FLAG_TX_PAUSE) != 0;
|
|
}
|
|
|
|
static int b44_set_pauseparam(struct net_device *dev,
|
|
struct ethtool_pauseparam *epause)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
if (epause->autoneg)
|
|
bp->flags |= B44_FLAG_PAUSE_AUTO;
|
|
else
|
|
bp->flags &= ~B44_FLAG_PAUSE_AUTO;
|
|
if (epause->rx_pause)
|
|
bp->flags |= B44_FLAG_RX_PAUSE;
|
|
else
|
|
bp->flags &= ~B44_FLAG_RX_PAUSE;
|
|
if (epause->tx_pause)
|
|
bp->flags |= B44_FLAG_TX_PAUSE;
|
|
else
|
|
bp->flags &= ~B44_FLAG_TX_PAUSE;
|
|
if (bp->flags & B44_FLAG_PAUSE_AUTO) {
|
|
b44_halt(bp);
|
|
b44_init_rings(bp);
|
|
b44_init_hw(bp, B44_FULL_RESET);
|
|
} else {
|
|
__b44_set_flow_ctrl(bp, bp->flags);
|
|
}
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
b44_enable_ints(bp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data)
|
|
{
|
|
switch(stringset) {
|
|
case ETH_SS_STATS:
|
|
memcpy(data, *b44_gstrings, sizeof(b44_gstrings));
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int b44_get_sset_count(struct net_device *dev, int sset)
|
|
{
|
|
switch (sset) {
|
|
case ETH_SS_STATS:
|
|
return ARRAY_SIZE(b44_gstrings);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static void b44_get_ethtool_stats(struct net_device *dev,
|
|
struct ethtool_stats *stats, u64 *data)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
struct b44_hw_stats *hwstat = &bp->hw_stats;
|
|
u64 *data_src, *data_dst;
|
|
unsigned int start;
|
|
u32 i;
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
b44_stats_update(bp);
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
do {
|
|
data_src = &hwstat->tx_good_octets;
|
|
data_dst = data;
|
|
start = u64_stats_fetch_begin_bh(&hwstat->syncp);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++)
|
|
*data_dst++ = *data_src++;
|
|
|
|
} while (u64_stats_fetch_retry_bh(&hwstat->syncp, start));
|
|
}
|
|
|
|
static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
wol->supported = WAKE_MAGIC;
|
|
if (bp->flags & B44_FLAG_WOL_ENABLE)
|
|
wol->wolopts = WAKE_MAGIC;
|
|
else
|
|
wol->wolopts = 0;
|
|
memset(&wol->sopass, 0, sizeof(wol->sopass));
|
|
}
|
|
|
|
static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
if (wol->wolopts & WAKE_MAGIC)
|
|
bp->flags |= B44_FLAG_WOL_ENABLE;
|
|
else
|
|
bp->flags &= ~B44_FLAG_WOL_ENABLE;
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct ethtool_ops b44_ethtool_ops = {
|
|
.get_drvinfo = b44_get_drvinfo,
|
|
.get_settings = b44_get_settings,
|
|
.set_settings = b44_set_settings,
|
|
.nway_reset = b44_nway_reset,
|
|
.get_link = ethtool_op_get_link,
|
|
.get_wol = b44_get_wol,
|
|
.set_wol = b44_set_wol,
|
|
.get_ringparam = b44_get_ringparam,
|
|
.set_ringparam = b44_set_ringparam,
|
|
.get_pauseparam = b44_get_pauseparam,
|
|
.set_pauseparam = b44_set_pauseparam,
|
|
.get_msglevel = b44_get_msglevel,
|
|
.set_msglevel = b44_set_msglevel,
|
|
.get_strings = b44_get_strings,
|
|
.get_sset_count = b44_get_sset_count,
|
|
.get_ethtool_stats = b44_get_ethtool_stats,
|
|
};
|
|
|
|
static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
int err = -EINVAL;
|
|
|
|
if (!netif_running(dev))
|
|
goto out;
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
if (bp->flags & B44_FLAG_EXTERNAL_PHY) {
|
|
BUG_ON(!bp->phydev);
|
|
err = phy_mii_ioctl(bp->phydev, ifr, cmd);
|
|
} else {
|
|
err = generic_mii_ioctl(&bp->mii_if, if_mii(ifr), cmd, NULL);
|
|
}
|
|
spin_unlock_irq(&bp->lock);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int b44_get_invariants(struct b44 *bp)
|
|
{
|
|
struct ssb_device *sdev = bp->sdev;
|
|
int err = 0;
|
|
u8 *addr;
|
|
|
|
bp->dma_offset = ssb_dma_translation(sdev);
|
|
|
|
if (sdev->bus->bustype == SSB_BUSTYPE_SSB &&
|
|
instance > 1) {
|
|
addr = sdev->bus->sprom.et1mac;
|
|
bp->phy_addr = sdev->bus->sprom.et1phyaddr;
|
|
} else {
|
|
addr = sdev->bus->sprom.et0mac;
|
|
bp->phy_addr = sdev->bus->sprom.et0phyaddr;
|
|
}
|
|
/* Some ROMs have buggy PHY addresses with the high
|
|
* bits set (sign extension?). Truncate them to a
|
|
* valid PHY address. */
|
|
bp->phy_addr &= 0x1F;
|
|
|
|
memcpy(bp->dev->dev_addr, addr, ETH_ALEN);
|
|
|
|
if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
|
|
pr_err("Invalid MAC address found in EEPROM\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
bp->imask = IMASK_DEF;
|
|
|
|
/* XXX - really required?
|
|
bp->flags |= B44_FLAG_BUGGY_TXPTR;
|
|
*/
|
|
|
|
if (bp->sdev->id.revision >= 7)
|
|
bp->flags |= B44_FLAG_B0_ANDLATER;
|
|
|
|
return err;
|
|
}
|
|
|
|
static const struct net_device_ops b44_netdev_ops = {
|
|
.ndo_open = b44_open,
|
|
.ndo_stop = b44_close,
|
|
.ndo_start_xmit = b44_start_xmit,
|
|
.ndo_get_stats64 = b44_get_stats64,
|
|
.ndo_set_rx_mode = b44_set_rx_mode,
|
|
.ndo_set_mac_address = b44_set_mac_addr,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_do_ioctl = b44_ioctl,
|
|
.ndo_tx_timeout = b44_tx_timeout,
|
|
.ndo_change_mtu = b44_change_mtu,
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_poll_controller = b44_poll_controller,
|
|
#endif
|
|
};
|
|
|
|
static void b44_adjust_link(struct net_device *dev)
|
|
{
|
|
struct b44 *bp = netdev_priv(dev);
|
|
struct phy_device *phydev = bp->phydev;
|
|
bool status_changed = 0;
|
|
|
|
BUG_ON(!phydev);
|
|
|
|
if (bp->old_link != phydev->link) {
|
|
status_changed = 1;
|
|
bp->old_link = phydev->link;
|
|
}
|
|
|
|
/* reflect duplex change */
|
|
if (phydev->link) {
|
|
if ((phydev->duplex == DUPLEX_HALF) &&
|
|
(bp->flags & B44_FLAG_FULL_DUPLEX)) {
|
|
status_changed = 1;
|
|
bp->flags &= ~B44_FLAG_FULL_DUPLEX;
|
|
} else if ((phydev->duplex == DUPLEX_FULL) &&
|
|
!(bp->flags & B44_FLAG_FULL_DUPLEX)) {
|
|
status_changed = 1;
|
|
bp->flags |= B44_FLAG_FULL_DUPLEX;
|
|
}
|
|
}
|
|
|
|
if (status_changed) {
|
|
b44_check_phy(bp);
|
|
phy_print_status(phydev);
|
|
}
|
|
}
|
|
|
|
static int b44_register_phy_one(struct b44 *bp)
|
|
{
|
|
struct mii_bus *mii_bus;
|
|
struct ssb_device *sdev = bp->sdev;
|
|
struct phy_device *phydev;
|
|
char bus_id[MII_BUS_ID_SIZE + 3];
|
|
struct ssb_sprom *sprom = &sdev->bus->sprom;
|
|
int err;
|
|
|
|
mii_bus = mdiobus_alloc();
|
|
if (!mii_bus) {
|
|
dev_err(sdev->dev, "mdiobus_alloc() failed\n");
|
|
err = -ENOMEM;
|
|
goto err_out;
|
|
}
|
|
|
|
mii_bus->priv = bp;
|
|
mii_bus->read = b44_mdio_read_phylib;
|
|
mii_bus->write = b44_mdio_write_phylib;
|
|
mii_bus->name = "b44_eth_mii";
|
|
mii_bus->parent = sdev->dev;
|
|
mii_bus->phy_mask = ~(1 << bp->phy_addr);
|
|
snprintf(mii_bus->id, MII_BUS_ID_SIZE, "%x", instance);
|
|
mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
|
|
if (!mii_bus->irq) {
|
|
dev_err(sdev->dev, "mii_bus irq allocation failed\n");
|
|
err = -ENOMEM;
|
|
goto err_out_mdiobus;
|
|
}
|
|
|
|
memset(mii_bus->irq, PHY_POLL, sizeof(int) * PHY_MAX_ADDR);
|
|
|
|
bp->mii_bus = mii_bus;
|
|
|
|
err = mdiobus_register(mii_bus);
|
|
if (err) {
|
|
dev_err(sdev->dev, "failed to register MII bus\n");
|
|
goto err_out_mdiobus_irq;
|
|
}
|
|
|
|
if (!bp->mii_bus->phy_map[bp->phy_addr] &&
|
|
(sprom->boardflags_lo & (B44_BOARDFLAG_ROBO | B44_BOARDFLAG_ADM))) {
|
|
|
|
dev_info(sdev->dev,
|
|
"could not find PHY at %i, use fixed one\n",
|
|
bp->phy_addr);
|
|
|
|
bp->phy_addr = 0;
|
|
snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, "fixed-0",
|
|
bp->phy_addr);
|
|
} else {
|
|
snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, mii_bus->id,
|
|
bp->phy_addr);
|
|
}
|
|
|
|
phydev = phy_connect(bp->dev, bus_id, &b44_adjust_link,
|
|
PHY_INTERFACE_MODE_MII);
|
|
if (IS_ERR(phydev)) {
|
|
dev_err(sdev->dev, "could not attach PHY at %i\n",
|
|
bp->phy_addr);
|
|
err = PTR_ERR(phydev);
|
|
goto err_out_mdiobus_unregister;
|
|
}
|
|
|
|
/* mask with MAC supported features */
|
|
phydev->supported &= (SUPPORTED_100baseT_Half |
|
|
SUPPORTED_100baseT_Full |
|
|
SUPPORTED_Autoneg |
|
|
SUPPORTED_MII);
|
|
phydev->advertising = phydev->supported;
|
|
|
|
bp->phydev = phydev;
|
|
bp->old_link = 0;
|
|
bp->phy_addr = phydev->addr;
|
|
|
|
dev_info(sdev->dev, "attached PHY driver [%s] (mii_bus:phy_addr=%s)\n",
|
|
phydev->drv->name, dev_name(&phydev->dev));
|
|
|
|
return 0;
|
|
|
|
err_out_mdiobus_unregister:
|
|
mdiobus_unregister(mii_bus);
|
|
|
|
err_out_mdiobus_irq:
|
|
kfree(mii_bus->irq);
|
|
|
|
err_out_mdiobus:
|
|
mdiobus_free(mii_bus);
|
|
|
|
err_out:
|
|
return err;
|
|
}
|
|
|
|
static void b44_unregister_phy_one(struct b44 *bp)
|
|
{
|
|
struct mii_bus *mii_bus = bp->mii_bus;
|
|
|
|
phy_disconnect(bp->phydev);
|
|
mdiobus_unregister(mii_bus);
|
|
kfree(mii_bus->irq);
|
|
mdiobus_free(mii_bus);
|
|
}
|
|
|
|
static int b44_init_one(struct ssb_device *sdev,
|
|
const struct ssb_device_id *ent)
|
|
{
|
|
struct net_device *dev;
|
|
struct b44 *bp;
|
|
int err;
|
|
|
|
instance++;
|
|
|
|
pr_info_once("%s version %s\n", DRV_DESCRIPTION, DRV_MODULE_VERSION);
|
|
|
|
dev = alloc_etherdev(sizeof(*bp));
|
|
if (!dev) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
SET_NETDEV_DEV(dev, sdev->dev);
|
|
|
|
/* No interesting netdevice features in this card... */
|
|
dev->features |= 0;
|
|
|
|
bp = netdev_priv(dev);
|
|
bp->sdev = sdev;
|
|
bp->dev = dev;
|
|
bp->force_copybreak = 0;
|
|
|
|
bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE);
|
|
|
|
spin_lock_init(&bp->lock);
|
|
|
|
bp->rx_pending = B44_DEF_RX_RING_PENDING;
|
|
bp->tx_pending = B44_DEF_TX_RING_PENDING;
|
|
|
|
dev->netdev_ops = &b44_netdev_ops;
|
|
netif_napi_add(dev, &bp->napi, b44_poll, 64);
|
|
dev->watchdog_timeo = B44_TX_TIMEOUT;
|
|
dev->irq = sdev->irq;
|
|
SET_ETHTOOL_OPS(dev, &b44_ethtool_ops);
|
|
|
|
err = ssb_bus_powerup(sdev->bus, 0);
|
|
if (err) {
|
|
dev_err(sdev->dev,
|
|
"Failed to powerup the bus\n");
|
|
goto err_out_free_dev;
|
|
}
|
|
|
|
if (dma_set_mask_and_coherent(sdev->dma_dev, DMA_BIT_MASK(30))) {
|
|
dev_err(sdev->dev,
|
|
"Required 30BIT DMA mask unsupported by the system\n");
|
|
goto err_out_powerdown;
|
|
}
|
|
|
|
err = b44_get_invariants(bp);
|
|
if (err) {
|
|
dev_err(sdev->dev,
|
|
"Problem fetching invariants of chip, aborting\n");
|
|
goto err_out_powerdown;
|
|
}
|
|
|
|
if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) {
|
|
dev_err(sdev->dev, "No PHY present on this MAC, aborting\n");
|
|
err = -ENODEV;
|
|
goto err_out_powerdown;
|
|
}
|
|
|
|
bp->mii_if.dev = dev;
|
|
bp->mii_if.mdio_read = b44_mdio_read_mii;
|
|
bp->mii_if.mdio_write = b44_mdio_write_mii;
|
|
bp->mii_if.phy_id = bp->phy_addr;
|
|
bp->mii_if.phy_id_mask = 0x1f;
|
|
bp->mii_if.reg_num_mask = 0x1f;
|
|
|
|
/* By default, advertise all speed/duplex settings. */
|
|
bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL |
|
|
B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL);
|
|
|
|
/* By default, auto-negotiate PAUSE. */
|
|
bp->flags |= B44_FLAG_PAUSE_AUTO;
|
|
|
|
err = register_netdev(dev);
|
|
if (err) {
|
|
dev_err(sdev->dev, "Cannot register net device, aborting\n");
|
|
goto err_out_powerdown;
|
|
}
|
|
|
|
netif_carrier_off(dev);
|
|
|
|
ssb_set_drvdata(sdev, dev);
|
|
|
|
/* Chip reset provides power to the b44 MAC & PCI cores, which
|
|
* is necessary for MAC register access.
|
|
*/
|
|
b44_chip_reset(bp, B44_CHIP_RESET_FULL);
|
|
|
|
/* do a phy reset to test if there is an active phy */
|
|
err = b44_phy_reset(bp);
|
|
if (err < 0) {
|
|
dev_err(sdev->dev, "phy reset failed\n");
|
|
goto err_out_unregister_netdev;
|
|
}
|
|
|
|
if (bp->flags & B44_FLAG_EXTERNAL_PHY) {
|
|
err = b44_register_phy_one(bp);
|
|
if (err) {
|
|
dev_err(sdev->dev, "Cannot register PHY, aborting\n");
|
|
goto err_out_unregister_netdev;
|
|
}
|
|
}
|
|
|
|
netdev_info(dev, "%s %pM\n", DRV_DESCRIPTION, dev->dev_addr);
|
|
|
|
return 0;
|
|
|
|
err_out_unregister_netdev:
|
|
unregister_netdev(dev);
|
|
err_out_powerdown:
|
|
ssb_bus_may_powerdown(sdev->bus);
|
|
|
|
err_out_free_dev:
|
|
free_netdev(dev);
|
|
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static void b44_remove_one(struct ssb_device *sdev)
|
|
{
|
|
struct net_device *dev = ssb_get_drvdata(sdev);
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
unregister_netdev(dev);
|
|
if (bp->flags & B44_FLAG_EXTERNAL_PHY)
|
|
b44_unregister_phy_one(bp);
|
|
ssb_device_disable(sdev, 0);
|
|
ssb_bus_may_powerdown(sdev->bus);
|
|
free_netdev(dev);
|
|
ssb_pcihost_set_power_state(sdev, PCI_D3hot);
|
|
ssb_set_drvdata(sdev, NULL);
|
|
}
|
|
|
|
static int b44_suspend(struct ssb_device *sdev, pm_message_t state)
|
|
{
|
|
struct net_device *dev = ssb_get_drvdata(sdev);
|
|
struct b44 *bp = netdev_priv(dev);
|
|
|
|
if (!netif_running(dev))
|
|
return 0;
|
|
|
|
del_timer_sync(&bp->timer);
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
|
|
b44_halt(bp);
|
|
netif_carrier_off(bp->dev);
|
|
netif_device_detach(bp->dev);
|
|
b44_free_rings(bp);
|
|
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
free_irq(dev->irq, dev);
|
|
if (bp->flags & B44_FLAG_WOL_ENABLE) {
|
|
b44_init_hw(bp, B44_PARTIAL_RESET);
|
|
b44_setup_wol(bp);
|
|
}
|
|
|
|
ssb_pcihost_set_power_state(sdev, PCI_D3hot);
|
|
return 0;
|
|
}
|
|
|
|
static int b44_resume(struct ssb_device *sdev)
|
|
{
|
|
struct net_device *dev = ssb_get_drvdata(sdev);
|
|
struct b44 *bp = netdev_priv(dev);
|
|
int rc = 0;
|
|
|
|
rc = ssb_bus_powerup(sdev->bus, 0);
|
|
if (rc) {
|
|
dev_err(sdev->dev,
|
|
"Failed to powerup the bus\n");
|
|
return rc;
|
|
}
|
|
|
|
if (!netif_running(dev))
|
|
return 0;
|
|
|
|
spin_lock_irq(&bp->lock);
|
|
b44_init_rings(bp);
|
|
b44_init_hw(bp, B44_FULL_RESET);
|
|
spin_unlock_irq(&bp->lock);
|
|
|
|
/*
|
|
* As a shared interrupt, the handler can be called immediately. To be
|
|
* able to check the interrupt status the hardware must already be
|
|
* powered back on (b44_init_hw).
|
|
*/
|
|
rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
|
|
if (rc) {
|
|
netdev_err(dev, "request_irq failed\n");
|
|
spin_lock_irq(&bp->lock);
|
|
b44_halt(bp);
|
|
b44_free_rings(bp);
|
|
spin_unlock_irq(&bp->lock);
|
|
return rc;
|
|
}
|
|
|
|
netif_device_attach(bp->dev);
|
|
|
|
b44_enable_ints(bp);
|
|
netif_wake_queue(dev);
|
|
|
|
mod_timer(&bp->timer, jiffies + 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ssb_driver b44_ssb_driver = {
|
|
.name = DRV_MODULE_NAME,
|
|
.id_table = b44_ssb_tbl,
|
|
.probe = b44_init_one,
|
|
.remove = b44_remove_one,
|
|
.suspend = b44_suspend,
|
|
.resume = b44_resume,
|
|
};
|
|
|
|
static inline int __init b44_pci_init(void)
|
|
{
|
|
int err = 0;
|
|
#ifdef CONFIG_B44_PCI
|
|
err = ssb_pcihost_register(&b44_pci_driver);
|
|
#endif
|
|
return err;
|
|
}
|
|
|
|
static inline void b44_pci_exit(void)
|
|
{
|
|
#ifdef CONFIG_B44_PCI
|
|
ssb_pcihost_unregister(&b44_pci_driver);
|
|
#endif
|
|
}
|
|
|
|
static int __init b44_init(void)
|
|
{
|
|
unsigned int dma_desc_align_size = dma_get_cache_alignment();
|
|
int err;
|
|
|
|
/* Setup paramaters for syncing RX/TX DMA descriptors */
|
|
dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc));
|
|
|
|
err = b44_pci_init();
|
|
if (err)
|
|
return err;
|
|
err = ssb_driver_register(&b44_ssb_driver);
|
|
if (err)
|
|
b44_pci_exit();
|
|
return err;
|
|
}
|
|
|
|
static void __exit b44_cleanup(void)
|
|
{
|
|
ssb_driver_unregister(&b44_ssb_driver);
|
|
b44_pci_exit();
|
|
}
|
|
|
|
module_init(b44_init);
|
|
module_exit(b44_cleanup);
|
|
|