MIPS: BCM63xx: Add integrated ethernet mac support.
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/drivers/net/bcm63xx_enet.h b/drivers/net/bcm63xx_enet.h
new file mode 100644
index 0000000..bd3684d
--- /dev/null
+++ b/drivers/net/bcm63xx_enet.h
@@ -0,0 +1,303 @@
+#ifndef BCM63XX_ENET_H_
+#define BCM63XX_ENET_H_
+
+#include <linux/types.h>
+#include <linux/mii.h>
+#include <linux/mutex.h>
+#include <linux/phy.h>
+#include <linux/platform_device.h>
+
+#include <bcm63xx_regs.h>
+#include <bcm63xx_irq.h>
+#include <bcm63xx_io.h>
+
+/* default number of descriptor */
+#define BCMENET_DEF_RX_DESC 64
+#define BCMENET_DEF_TX_DESC 32
+
+/* maximum burst len for dma (4 bytes unit) */
+#define BCMENET_DMA_MAXBURST 16
+
+/* tx transmit threshold (4 bytes unit), fifo is 256 bytes, the value
+ * must be low enough so that a DMA transfer of above burst length can
+ * not overflow the fifo */
+#define BCMENET_TX_FIFO_TRESH 32
+
+/*
+ * hardware maximum rx/tx packet size including FCS, max mtu is
+ * actually 2047, but if we set max rx size register to 2047 we won't
+ * get overflow information if packet size is 2048 or above
+ */
+#define BCMENET_MAX_MTU 2046
+
+/*
+ * rx/tx dma descriptor
+ */
+struct bcm_enet_desc {
+ u32 len_stat;
+ u32 address;
+};
+
+#define DMADESC_LENGTH_SHIFT 16
+#define DMADESC_LENGTH_MASK (0xfff << DMADESC_LENGTH_SHIFT)
+#define DMADESC_OWNER_MASK (1 << 15)
+#define DMADESC_EOP_MASK (1 << 14)
+#define DMADESC_SOP_MASK (1 << 13)
+#define DMADESC_ESOP_MASK (DMADESC_EOP_MASK | DMADESC_SOP_MASK)
+#define DMADESC_WRAP_MASK (1 << 12)
+
+#define DMADESC_UNDER_MASK (1 << 9)
+#define DMADESC_APPEND_CRC (1 << 8)
+#define DMADESC_OVSIZE_MASK (1 << 4)
+#define DMADESC_RXER_MASK (1 << 2)
+#define DMADESC_CRC_MASK (1 << 1)
+#define DMADESC_OV_MASK (1 << 0)
+#define DMADESC_ERR_MASK (DMADESC_UNDER_MASK | \
+ DMADESC_OVSIZE_MASK | \
+ DMADESC_RXER_MASK | \
+ DMADESC_CRC_MASK | \
+ DMADESC_OV_MASK)
+
+
+/*
+ * MIB Counters register definitions
+*/
+#define ETH_MIB_TX_GD_OCTETS 0
+#define ETH_MIB_TX_GD_PKTS 1
+#define ETH_MIB_TX_ALL_OCTETS 2
+#define ETH_MIB_TX_ALL_PKTS 3
+#define ETH_MIB_TX_BRDCAST 4
+#define ETH_MIB_TX_MULT 5
+#define ETH_MIB_TX_64 6
+#define ETH_MIB_TX_65_127 7
+#define ETH_MIB_TX_128_255 8
+#define ETH_MIB_TX_256_511 9
+#define ETH_MIB_TX_512_1023 10
+#define ETH_MIB_TX_1024_MAX 11
+#define ETH_MIB_TX_JAB 12
+#define ETH_MIB_TX_OVR 13
+#define ETH_MIB_TX_FRAG 14
+#define ETH_MIB_TX_UNDERRUN 15
+#define ETH_MIB_TX_COL 16
+#define ETH_MIB_TX_1_COL 17
+#define ETH_MIB_TX_M_COL 18
+#define ETH_MIB_TX_EX_COL 19
+#define ETH_MIB_TX_LATE 20
+#define ETH_MIB_TX_DEF 21
+#define ETH_MIB_TX_CRS 22
+#define ETH_MIB_TX_PAUSE 23
+
+#define ETH_MIB_RX_GD_OCTETS 32
+#define ETH_MIB_RX_GD_PKTS 33
+#define ETH_MIB_RX_ALL_OCTETS 34
+#define ETH_MIB_RX_ALL_PKTS 35
+#define ETH_MIB_RX_BRDCAST 36
+#define ETH_MIB_RX_MULT 37
+#define ETH_MIB_RX_64 38
+#define ETH_MIB_RX_65_127 39
+#define ETH_MIB_RX_128_255 40
+#define ETH_MIB_RX_256_511 41
+#define ETH_MIB_RX_512_1023 42
+#define ETH_MIB_RX_1024_MAX 43
+#define ETH_MIB_RX_JAB 44
+#define ETH_MIB_RX_OVR 45
+#define ETH_MIB_RX_FRAG 46
+#define ETH_MIB_RX_DROP 47
+#define ETH_MIB_RX_CRC_ALIGN 48
+#define ETH_MIB_RX_UND 49
+#define ETH_MIB_RX_CRC 50
+#define ETH_MIB_RX_ALIGN 51
+#define ETH_MIB_RX_SYM 52
+#define ETH_MIB_RX_PAUSE 53
+#define ETH_MIB_RX_CNTRL 54
+
+
+struct bcm_enet_mib_counters {
+ u64 tx_gd_octets;
+ u32 tx_gd_pkts;
+ u32 tx_all_octets;
+ u32 tx_all_pkts;
+ u32 tx_brdcast;
+ u32 tx_mult;
+ u32 tx_64;
+ u32 tx_65_127;
+ u32 tx_128_255;
+ u32 tx_256_511;
+ u32 tx_512_1023;
+ u32 tx_1024_max;
+ u32 tx_jab;
+ u32 tx_ovr;
+ u32 tx_frag;
+ u32 tx_underrun;
+ u32 tx_col;
+ u32 tx_1_col;
+ u32 tx_m_col;
+ u32 tx_ex_col;
+ u32 tx_late;
+ u32 tx_def;
+ u32 tx_crs;
+ u32 tx_pause;
+ u64 rx_gd_octets;
+ u32 rx_gd_pkts;
+ u32 rx_all_octets;
+ u32 rx_all_pkts;
+ u32 rx_brdcast;
+ u32 rx_mult;
+ u32 rx_64;
+ u32 rx_65_127;
+ u32 rx_128_255;
+ u32 rx_256_511;
+ u32 rx_512_1023;
+ u32 rx_1024_max;
+ u32 rx_jab;
+ u32 rx_ovr;
+ u32 rx_frag;
+ u32 rx_drop;
+ u32 rx_crc_align;
+ u32 rx_und;
+ u32 rx_crc;
+ u32 rx_align;
+ u32 rx_sym;
+ u32 rx_pause;
+ u32 rx_cntrl;
+};
+
+
+struct bcm_enet_priv {
+
+ /* mac id (from platform device id) */
+ int mac_id;
+
+ /* base remapped address of device */
+ void __iomem *base;
+
+ /* mac irq, rx_dma irq, tx_dma irq */
+ int irq;
+ int irq_rx;
+ int irq_tx;
+
+ /* hw view of rx & tx dma ring */
+ dma_addr_t rx_desc_dma;
+ dma_addr_t tx_desc_dma;
+
+ /* allocated size (in bytes) for rx & tx dma ring */
+ unsigned int rx_desc_alloc_size;
+ unsigned int tx_desc_alloc_size;
+
+
+ struct napi_struct napi;
+
+ /* dma channel id for rx */
+ int rx_chan;
+
+ /* number of dma desc in rx ring */
+ int rx_ring_size;
+
+ /* cpu view of rx dma ring */
+ struct bcm_enet_desc *rx_desc_cpu;
+
+ /* current number of armed descriptor given to hardware for rx */
+ int rx_desc_count;
+
+ /* next rx descriptor to fetch from hardware */
+ int rx_curr_desc;
+
+ /* next dirty rx descriptor to refill */
+ int rx_dirty_desc;
+
+ /* size of allocated rx skbs */
+ unsigned int rx_skb_size;
+
+ /* list of skb given to hw for rx */
+ struct sk_buff **rx_skb;
+
+ /* used when rx skb allocation failed, so we defer rx queue
+ * refill */
+ struct timer_list rx_timeout;
+
+ /* lock rx_timeout against rx normal operation */
+ spinlock_t rx_lock;
+
+
+ /* dma channel id for tx */
+ int tx_chan;
+
+ /* number of dma desc in tx ring */
+ int tx_ring_size;
+
+ /* cpu view of rx dma ring */
+ struct bcm_enet_desc *tx_desc_cpu;
+
+ /* number of available descriptor for tx */
+ int tx_desc_count;
+
+ /* next tx descriptor avaiable */
+ int tx_curr_desc;
+
+ /* next dirty tx descriptor to reclaim */
+ int tx_dirty_desc;
+
+ /* list of skb given to hw for tx */
+ struct sk_buff **tx_skb;
+
+ /* lock used by tx reclaim and xmit */
+ spinlock_t tx_lock;
+
+
+ /* set if internal phy is ignored and external mii interface
+ * is selected */
+ int use_external_mii;
+
+ /* set if a phy is connected, phy address must be known,
+ * probing is not possible */
+ int has_phy;
+ int phy_id;
+
+ /* set if connected phy has an associated irq */
+ int has_phy_interrupt;
+ int phy_interrupt;
+
+ /* used when a phy is connected (phylib used) */
+ struct mii_bus *mii_bus;
+ struct phy_device *phydev;
+ int old_link;
+ int old_duplex;
+ int old_pause;
+
+ /* used when no phy is connected */
+ int force_speed_100;
+ int force_duplex_full;
+
+ /* pause parameters */
+ int pause_auto;
+ int pause_rx;
+ int pause_tx;
+
+ /* stats */
+ struct net_device_stats stats;
+ struct bcm_enet_mib_counters mib;
+
+ /* after mib interrupt, mib registers update is done in this
+ * work queue */
+ struct work_struct mib_update_task;
+
+ /* lock mib update between userspace request and workqueue */
+ struct mutex mib_update_lock;
+
+ /* mac clock */
+ struct clk *mac_clk;
+
+ /* phy clock if internal phy is used */
+ struct clk *phy_clk;
+
+ /* network device reference */
+ struct net_device *net_dev;
+
+ /* platform device reference */
+ struct platform_device *pdev;
+
+ /* maximum hardware transmit/receive size */
+ unsigned int hw_mtu;
+};
+
+#endif /* ! BCM63XX_ENET_H_ */