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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/myri_sbus.h
downloadlwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/net/myri_sbus.h')
-rw-r--r--drivers/net/myri_sbus.h313
1 files changed, 313 insertions, 0 deletions
diff --git a/drivers/net/myri_sbus.h b/drivers/net/myri_sbus.h
new file mode 100644
index 000000000000..9391e55a5e92
--- /dev/null
+++ b/drivers/net/myri_sbus.h
@@ -0,0 +1,313 @@
+/* myri_sbus.h: Defines for MyriCOM MyriNET SBUS card driver.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#ifndef _MYRI_SBUS_H
+#define _MYRI_SBUS_H
+
+/* LANAI Registers */
+#define LANAI_IPF0 0x00UL /* Context zero state registers.*/
+#define LANAI_CUR0 0x04UL
+#define LANAI_PREV0 0x08UL
+#define LANAI_DATA0 0x0cUL
+#define LANAI_DPF0 0x10UL
+#define LANAI_IPF1 0x14UL /* Context one state registers. */
+#define LANAI_CUR1 0x18UL
+#define LANAI_PREV1 0x1cUL
+#define LANAI_DATA1 0x20UL
+#define LANAI_DPF1 0x24UL
+#define LANAI_ISTAT 0x28UL /* Interrupt status. */
+#define LANAI_EIMASK 0x2cUL /* External IRQ mask. */
+#define LANAI_ITIMER 0x30UL /* IRQ timer. */
+#define LANAI_RTC 0x34UL /* Real Time Clock */
+#define LANAI_CSUM 0x38UL /* Checksum. */
+#define LANAI_DMAXADDR 0x3cUL /* SBUS DMA external address. */
+#define LANAI_DMALADDR 0x40UL /* SBUS DMA local address. */
+#define LANAI_DMACTR 0x44UL /* SBUS DMA counter. */
+#define LANAI_RXDMAPTR 0x48UL /* Receive DMA pointer. */
+#define LANAI_RXDMALIM 0x4cUL /* Receive DMA limit. */
+#define LANAI_TXDMAPTR 0x50UL /* Transmit DMA pointer. */
+#define LANAI_TXDMALIM 0x54UL /* Transmit DMA limit. */
+#define LANAI_TXDMALIMT 0x58UL /* Transmit DMA limit w/tail. */
+ /* 0x5cUL, reserved */
+#define LANAI_RBYTE 0x60UL /* Receive byte. */
+ /* 0x64-->0x6c, reserved */
+#define LANAI_RHALF 0x70UL /* Receive half-word. */
+ /* 0x72UL, reserved */
+#define LANAI_RWORD 0x74UL /* Receive word. */
+#define LANAI_SALIGN 0x78UL /* Send align. */
+#define LANAI_SBYTE 0x7cUL /* SingleSend send-byte. */
+#define LANAI_SHALF 0x80UL /* SingleSend send-halfword. */
+#define LANAI_SWORD 0x84UL /* SingleSend send-word. */
+#define LANAI_SSENDT 0x88UL /* SingleSend special. */
+#define LANAI_DMADIR 0x8cUL /* DMA direction. */
+#define LANAI_DMASTAT 0x90UL /* DMA status. */
+#define LANAI_TIMEO 0x94UL /* Timeout register. */
+#define LANAI_MYRINET 0x98UL /* XXX MAGIC myricom thing */
+#define LANAI_HWDEBUG 0x9cUL /* Hardware debugging reg. */
+#define LANAI_LEDS 0xa0UL /* LED control. */
+#define LANAI_VERS 0xa4UL /* Version register. */
+#define LANAI_LINKON 0xa8UL /* Link activation reg. */
+ /* 0xac-->0x104, reserved */
+#define LANAI_CVAL 0x108UL /* Clock value register. */
+#define LANAI_REG_SIZE 0x10cUL
+
+/* Interrupt status bits. */
+#define ISTAT_DEBUG 0x80000000
+#define ISTAT_HOST 0x40000000
+#define ISTAT_LAN7 0x00800000
+#define ISTAT_LAN6 0x00400000
+#define ISTAT_LAN5 0x00200000
+#define ISTAT_LAN4 0x00100000
+#define ISTAT_LAN3 0x00080000
+#define ISTAT_LAN2 0x00040000
+#define ISTAT_LAN1 0x00020000
+#define ISTAT_LAN0 0x00010000
+#define ISTAT_WRDY 0x00008000
+#define ISTAT_HRDY 0x00004000
+#define ISTAT_SRDY 0x00002000
+#define ISTAT_LINK 0x00001000
+#define ISTAT_FRES 0x00000800
+#define ISTAT_NRES 0x00000800
+#define ISTAT_WAKE 0x00000400
+#define ISTAT_OB2 0x00000200
+#define ISTAT_OB1 0x00000100
+#define ISTAT_TAIL 0x00000080
+#define ISTAT_WDOG 0x00000040
+#define ISTAT_TIME 0x00000020
+#define ISTAT_DMA 0x00000010
+#define ISTAT_SEND 0x00000008
+#define ISTAT_BUF 0x00000004
+#define ISTAT_RECV 0x00000002
+#define ISTAT_BRDY 0x00000001
+
+/* MYRI Registers */
+#define MYRI_RESETOFF 0x00UL
+#define MYRI_RESETON 0x04UL
+#define MYRI_IRQOFF 0x08UL
+#define MYRI_IRQON 0x0cUL
+#define MYRI_WAKEUPOFF 0x10UL
+#define MYRI_WAKEUPON 0x14UL
+#define MYRI_IRQREAD 0x18UL
+ /* 0x1c-->0x3ffc, reserved */
+#define MYRI_LOCALMEM 0x4000UL
+#define MYRI_REG_SIZE 0x25000UL
+
+/* Shared memory interrupt mask. */
+#define SHMEM_IMASK_RX 0x00000002
+#define SHMEM_IMASK_TX 0x00000001
+
+/* Just to make things readable. */
+#define KERNEL_CHANNEL 0
+
+/* The size of this must be >= 129 bytes. */
+struct myri_eeprom {
+ unsigned int cval;
+ unsigned short cpuvers;
+ unsigned char id[6];
+ unsigned int ramsz;
+ unsigned char fvers[32];
+ unsigned char mvers[16];
+ unsigned short dlval;
+ unsigned short brd_type;
+ unsigned short bus_type;
+ unsigned short prod_code;
+ unsigned int serial_num;
+ unsigned short _reserved[24];
+ unsigned int _unused[2];
+};
+
+/* EEPROM bus types, only SBUS is valid in this driver. */
+#define BUS_TYPE_SBUS 1
+
+/* EEPROM CPU revisions. */
+#define CPUVERS_2_3 0x0203
+#define CPUVERS_3_0 0x0300
+#define CPUVERS_3_1 0x0301
+#define CPUVERS_3_2 0x0302
+#define CPUVERS_4_0 0x0400
+#define CPUVERS_4_1 0x0401
+#define CPUVERS_4_2 0x0402
+#define CPUVERS_5_0 0x0500
+
+/* MYRI Control Registers */
+#define MYRICTRL_CTRL 0x00UL
+#define MYRICTRL_IRQLVL 0x02UL
+#define MYRICTRL_REG_SIZE 0x04UL
+
+/* Global control register defines. */
+#define CONTROL_ROFF 0x8000 /* Reset OFF. */
+#define CONTROL_RON 0x4000 /* Reset ON. */
+#define CONTROL_EIRQ 0x2000 /* Enable IRQ's. */
+#define CONTROL_DIRQ 0x1000 /* Disable IRQ's. */
+#define CONTROL_WON 0x0800 /* Wake-up ON. */
+
+#define MYRI_SCATTER_ENTRIES 8
+#define MYRI_GATHER_ENTRIES 16
+
+struct myri_sglist {
+ u32 addr;
+ u32 len;
+};
+
+struct myri_rxd {
+ struct myri_sglist myri_scatters[MYRI_SCATTER_ENTRIES]; /* DMA scatter list.*/
+ u32 csum; /* HW computed checksum. */
+ u32 ctx;
+ u32 num_sg; /* Total scatter entries. */
+};
+
+struct myri_txd {
+ struct myri_sglist myri_gathers[MYRI_GATHER_ENTRIES]; /* DMA scatter list. */
+ u32 num_sg; /* Total scatter entries. */
+ u16 addr[4]; /* XXX address */
+ u32 chan;
+ u32 len; /* Total length of packet. */
+ u32 csum_off; /* Where data to csum is. */
+ u32 csum_field; /* Where csum goes in pkt. */
+};
+
+#define MYRINET_MTU 8432
+#define RX_ALLOC_SIZE 8448
+#define MYRI_PAD_LEN 2
+#define RX_COPY_THRESHOLD 256
+
+/* These numbers are cast in stone, new firmware is needed if
+ * you want to change them.
+ */
+#define TX_RING_MAXSIZE 16
+#define RX_RING_MAXSIZE 16
+
+#define TX_RING_SIZE 16
+#define RX_RING_SIZE 16
+
+/* GRRR... */
+static __inline__ int NEXT_RX(int num)
+{
+ /* XXX >=??? */
+ if(++num > RX_RING_SIZE)
+ num = 0;
+ return num;
+}
+
+static __inline__ int PREV_RX(int num)
+{
+ if(--num < 0)
+ num = RX_RING_SIZE;
+ return num;
+}
+
+#define NEXT_TX(num) (((num) + 1) & (TX_RING_SIZE - 1))
+#define PREV_TX(num) (((num) - 1) & (TX_RING_SIZE - 1))
+
+#define TX_BUFFS_AVAIL(head, tail) \
+ ((head) <= (tail) ? \
+ (head) + (TX_RING_SIZE - 1) - (tail) : \
+ (head) - (tail) - 1)
+
+struct sendq {
+ u32 tail;
+ u32 head;
+ u32 hdebug;
+ u32 mdebug;
+ struct myri_txd myri_txd[TX_RING_MAXSIZE];
+};
+
+struct recvq {
+ u32 head;
+ u32 tail;
+ u32 hdebug;
+ u32 mdebug;
+ struct myri_rxd myri_rxd[RX_RING_MAXSIZE + 1];
+};
+
+#define MYRI_MLIST_SIZE 8
+
+struct mclist {
+ u32 maxlen;
+ u32 len;
+ u32 cache;
+ struct pair {
+ u8 addr[8];
+ u32 val;
+ } mc_pairs[MYRI_MLIST_SIZE];
+ u8 bcast_addr[8];
+};
+
+struct myri_channel {
+ u32 state; /* State of the channel. */
+ u32 busy; /* Channel is busy. */
+ struct sendq sendq; /* Device tx queue. */
+ struct recvq recvq; /* Device rx queue. */
+ struct recvq recvqa; /* Device rx queue acked. */
+ u32 rbytes; /* Receive bytes. */
+ u32 sbytes; /* Send bytes. */
+ u32 rmsgs; /* Receive messages. */
+ u32 smsgs; /* Send messages. */
+ struct mclist mclist; /* Device multicast list. */
+};
+
+/* Values for per-channel state. */
+#define STATE_WFH 0 /* Waiting for HOST. */
+#define STATE_WFN 1 /* Waiting for NET. */
+#define STATE_READY 2 /* Ready. */
+
+struct myri_shmem {
+ u8 addr[8]; /* Board's address. */
+ u32 nchan; /* Number of channels. */
+ u32 burst; /* SBUS dma burst enable. */
+ u32 shakedown; /* DarkkkkStarrr Crashesss... */
+ u32 send; /* Send wanted. */
+ u32 imask; /* Interrupt enable mask. */
+ u32 mlevel; /* Map level. */
+ u32 debug[4]; /* Misc. debug areas. */
+ struct myri_channel channel; /* Only one channel on a host. */
+};
+
+struct myri_eth {
+ /* These are frequently accessed, keep together
+ * to obtain good cache hit rates.
+ */
+ spinlock_t irq_lock;
+ struct myri_shmem __iomem *shmem; /* Shared data structures. */
+ void __iomem *cregs; /* Control register space. */
+ struct recvq __iomem *rqack; /* Where we ack rx's. */
+ struct recvq __iomem *rq; /* Where we put buffers. */
+ struct sendq __iomem *sq; /* Where we stuff tx's. */
+ struct net_device *dev; /* Linux/NET dev struct. */
+ int tx_old; /* To speed up tx cleaning. */
+ void __iomem *lregs; /* Quick ptr to LANAI regs. */
+ struct sk_buff *rx_skbs[RX_RING_SIZE+1];/* RX skb's */
+ struct sk_buff *tx_skbs[TX_RING_SIZE]; /* TX skb's */
+ struct net_device_stats enet_stats; /* Interface stats. */
+
+ /* These are less frequently accessed. */
+ void __iomem *regs; /* MyriCOM register space. */
+ void __iomem *lanai; /* View 2 of register space. */
+ unsigned int myri_bursts; /* SBUS bursts. */
+ struct myri_eeprom eeprom; /* Local copy of EEPROM. */
+ unsigned int reg_size; /* Size of register space. */
+ unsigned int shmem_base; /* Offset to shared ram. */
+ struct sbus_dev *myri_sdev; /* Our SBUS device struct. */
+ struct myri_eth *next_module; /* Next in adapter chain. */
+};
+
+/* We use this to acquire receive skb's that we can DMA directly into. */
+#define ALIGNED_RX_SKB_ADDR(addr) \
+ ((((unsigned long)(addr) + (64 - 1)) & ~(64 - 1)) - (unsigned long)(addr))
+static inline struct sk_buff *myri_alloc_skb(unsigned int length, int gfp_flags)
+{
+ struct sk_buff *skb;
+
+ skb = alloc_skb(length + 64, gfp_flags);
+ if(skb) {
+ int offset = ALIGNED_RX_SKB_ADDR(skb->data);
+
+ if(offset)
+ skb_reserve(skb, offset);
+ }
+ return skb;
+}
+
+#endif /* !(_MYRI_SBUS_H) */