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895671548e
freebsd/sys/dev/ti/if_tireg.h
Pyun YongHyeon ff3ced1270 - Tx side bus_dmamap_load_mbuf_sg(9) support. This reduces bookkeeping 
requiried to keep consistent softc state before/after callback function
  invocation and supposed to be sligntly faster than previous one as it
  wouldn't incur callback overhead. With this change callback function
  was gone.
- Decrease TI_MAXTXSEGS to 32 from 128. It seems that most mbuf chain
  length is less than 32 and it would be re-packed with m_defrag(9) if
  its chain length is larger than TI_MAXTXSEGS. This would protect ti(4)
  against possible kernel stack overflow when txsegs[] is put on stack.
  Alternatively, we can embed the txsegs[] into softc. However, that
  would waste memory and make Tx/Rx speration hard when we want to
  sperate Tx/Rx handlers to optimize locking.
- Fix dma map tracking used in Tx path. Previously it used the dma map
  of the last mbuf chain in ti_txeof() which was incorrect as ti(4)
  used dma map of the first mbuf chain when it loads a mbuf chain with
  bus_dmamap_load_mbuf(9). Correct the bug by introducing queues that
  keep track of active/inactive dma maps/mbuf chain.
- Use ti_txcnt to check whether driver need to set watchdog timer instead
  of blidnly clearing the timer in ti_txeof().
- Remove the 3rd arg. of ti_encap(). Since ti(4) now caches the last
  descriptor index(ti_tx_saved_prodidx) used in Tx there is no need to
  pass it as a fuction arg.
- Change data type of producer/consumer index to int from u_int16_t in
  order to remove implicit type conversions in Tx/Rx handlers.
- Check interface queue before getting a mbuf chain to reduce locking
  overhead.
- Check number of available Tx descriptores to be 16 or higher in
  ti_start(). This wouldn't protect Tx descriptor shortage but it would
  reduce number of bus_dmamap_unload(9) calls in ti_encap() when we are
  about to running out of Tx descriptors.
- Command NIC to send packets ony when the driver really has packets
  enqueued. Previously it always set TI_MB_SENDPROD_IDX which would
  command NIC to DMA Tx descriptors into NIC local memory regardless
  of Tx descriptor changes.

Reviewed by:	scottl
2006-01-03 06:14:07 +00:00

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/*-
* Copyright (c) 1997, 1998, 1999
* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Tigon register offsets. These are memory mapped registers
* which can be accessed with the CSR_READ_4()/CSR_WRITE_4() macros.
* Each register must be accessed using 32 bit operations.
*
* All reegisters are accessed through a 16K shared memory block.
* The first group of registers are actually copies of the PCI
* configuration space registers.
*/
#define TI_PCI_ID 0x000 /* PCI device/vendor ID */
#define TI_PCI_CMDSTAT 0x004
#define TI_PCI_CLASSCODE 0x008
#define TI_PCI_BIST 0x00C
#define TI_PCI_LOMEM 0x010 /* Shared memory base address */
#define TI_PCI_SUBSYS 0x02C
#define TI_PCI_ROMBASE 0x030
#define TI_PCI_INT 0x03C
#ifndef PCIM_CMD_MWIEN
#define PCIM_CMD_MWIEN 0x0010
#endif
/*
* Alteon AceNIC PCI vendor/device ID.
*/
#define ALT_VENDORID 0x12AE
#define ALT_DEVICEID_ACENIC 0x0001
#define ALT_DEVICEID_ACENIC_COPPER 0x0002
/*
* 3Com 3c985 PCI vendor/device ID.
*/
#define TC_VENDORID 0x10B7
#define TC_DEVICEID_3C985 0x0001
/*
* Netgear GA620 PCI vendor/device ID.
*/
#define NG_VENDORID 0x1385
#define NG_DEVICEID_GA620 0x620A
#define NG_DEVICEID_GA620T 0x630A
/*
* SGI device/vendor ID.
*/
#define SGI_VENDORID 0x10A9
#define SGI_DEVICEID_TIGON 0x0009
/*
* DEC vendor ID, Farallon device ID. Apparently, Farallon used
* the DEC vendor ID in their cards by mistake.
*/
#define DEC_VENDORID 0x1011
#define DEC_DEVICEID_FARALLON_PN9000SX 0x001a
/*
* Tigon configuration and control registers.
*/
#define TI_MISC_HOST_CTL 0x040
#define TI_MISC_LOCAL_CTL 0x044
#define TI_SEM_AB 0x048 /* Tigon 2 only */
#define TI_MISC_CONF 0x050 /* Tigon 2 only */
#define TI_TIMER_BITS 0x054
#define TI_TIMERREF 0x058
#define TI_PCI_STATE 0x05C
#define TI_MAIN_EVENT_A 0x060
#define TI_MAILBOX_EVENT_A 0x064
#define TI_WINBASE 0x068
#define TI_WINDATA 0x06C
#define TI_MAIN_EVENT_B 0x070 /* Tigon 2 only */
#define TI_MAILBOX_EVENT_B 0x074 /* Tigon 2 only */
#define TI_TIMERREF_B 0x078 /* Tigon 2 only */
#define TI_SERIAL 0x07C
/*
* Misc host control bits.
*/
#define TI_MHC_INTSTATE 0x00000001
#define TI_MHC_CLEARINT 0x00000002
#define TI_MHC_RESET 0x00000008
#define TI_MHC_BYTE_SWAP_ENB 0x00000010
#define TI_MHC_WORD_SWAP_ENB 0x00000020
#define TI_MHC_MASK_INTS 0x00000040
#define TI_MHC_CHIP_REV_MASK 0xF0000000
#define TI_MHC_BIGENDIAN_INIT \
(TI_MHC_BYTE_SWAP_ENB|TI_MHC_WORD_SWAP_ENB|TI_MHC_CLEARINT)
#define TI_MHC_LITTLEENDIAN_INIT \
(TI_MHC_WORD_SWAP_ENB|TI_MHC_CLEARINT)
/*
* Tigon chip rev values. Rev 4 is the Tigon 1. Rev 6 is the Tigon 2.
* Rev 5 is also the Tigon 2, but is a broken version which was never
* used in any actual hardware, so we ignore it.
*/
#define TI_REV_TIGON_I 0x40000000
#define TI_REV_TIGON_II 0x60000000
/*
* Firmware revision that we want.
*/
#define TI_FIRMWARE_MAJOR 0xc
#define TI_FIRMWARE_MINOR 0x4
#define TI_FIRMWARE_FIX 0xb
/*
* Miscelaneous Local Control register.
*/
#define TI_MLC_EE_WRITE_ENB 0x00000010
#define TI_MLC_SRAM_BANK_SIZE 0x00000300 /* Tigon 2 only */
#define TI_MLC_LOCALADDR_21 0x00004000
#define TI_MLC_LOCALADDR_22 0x00008000
#define TI_MLC_SBUS_WRITEERR 0x00080000
#define TI_MLC_EE_CLK 0x00100000
#define TI_MLC_EE_TXEN 0x00200000
#define TI_MLC_EE_DOUT 0x00400000
#define TI_MLC_EE_DIN 0x00800000
/* Possible memory sizes. */
#define TI_MLC_SRAM_BANK_DISA 0x00000000
#define TI_MLC_SRAM_BANK_1024K 0x00000100
#define TI_MLC_SRAM_BANK_512K 0x00000200
#define TI_MLC_SRAM_BANK_256K 0x00000300
/*
* Offset of MAC address inside EEPROM.
*/
#define TI_EE_MAC_OFFSET 0x8c
#define TI_DMA_ASSIST 0x11C
#define TI_CPU_STATE 0x140
#define TI_CPU_PROGRAM_COUNTER 0x144
#define TI_SRAM_ADDR 0x154
#define TI_SRAM_DATA 0x158
#define TI_GEN_0 0x180
#define TI_GEN_X 0x1FC
#define TI_MAC_TX_STATE 0x200
#define TI_MAC_RX_STATE 0x220
#define TI_CPU_CTL_B 0x240 /* Tigon 2 only */
#define TI_CPU_PROGRAM_COUNTER_B 0x244 /* Tigon 2 only */
#define TI_SRAM_ADDR_B 0x254 /* Tigon 2 only */
#define TI_SRAM_DATA_B 0x258 /* Tigon 2 only */
#define TI_GEN_B_0 0x280 /* Tigon 2 only */
#define TI_GEN_B_X 0x2FC /* Tigon 2 only */
/*
* Misc config register.
*/
#define TI_MCR_SRAM_SYNCHRONOUS 0x00100000 /* Tigon 2 only */
/*
* PCI state register.
*/
#define TI_PCISTATE_FORCE_RESET 0x00000001
#define TI_PCISTATE_PROVIDE_LEN 0x00000002
#define TI_PCISTATE_READ_MAXDMA 0x0000001C
#define TI_PCISTATE_WRITE_MAXDMA 0x000000E0
#define TI_PCISTATE_MINDMA 0x0000FF00
#define TI_PCISTATE_FIFO_RETRY_ENB 0x00010000
#define TI_PCISTATE_USE_MEM_RD_MULT 0x00020000
#define TI_PCISTATE_NO_SWAP_READ_DMA 0x00040000
#define TI_PCISTATE_NO_SWAP_WRITE_DMA 0x00080000
#define TI_PCISTATE_66MHZ_BUS 0x00080000 /* Tigon 2 only */
#define TI_PCISTATE_32BIT_BUS 0x00100000 /* Tigon 2 only */
#define TI_PCISTATE_ENB_BYTE_ENABLES 0x00800000 /* Tigon 2 only */
#define TI_PCISTATE_READ_CMD 0x0F000000
#define TI_PCISTATE_WRITE_CMD 0xF0000000
#define TI_PCI_READMAX_4 0x04
#define TI_PCI_READMAX_16 0x08
#define TI_PCI_READMAX_32 0x0C
#define TI_PCI_READMAX_64 0x10
#define TI_PCI_READMAX_128 0x14
#define TI_PCI_READMAX_256 0x18
#define TI_PCI_READMAX_1024 0x1C
#define TI_PCI_WRITEMAX_4 0x20
#define TI_PCI_WRITEMAX_16 0x40
#define TI_PCI_WRITEMAX_32 0x60
#define TI_PCI_WRITEMAX_64 0x80
#define TI_PCI_WRITEMAX_128 0xA0
#define TI_PCI_WRITEMAX_256 0xC0
#define TI_PCI_WRITEMAX_1024 0xE0
#define TI_PCI_READ_CMD 0x06000000
#define TI_PCI_WRITE_CMD 0x70000000
/*
* DMA state register.
*/
#define TI_DMASTATE_ENABLE 0x00000001
#define TI_DMASTATE_PAUSE 0x00000002
/*
* CPU state register.
*/
#define TI_CPUSTATE_RESET 0x00000001
#define TI_CPUSTATE_STEP 0x00000002
#define TI_CPUSTATE_ROMFAIL 0x00000010
#define TI_CPUSTATE_HALT 0x00010000
/*
* MAC TX state register
*/
#define TI_TXSTATE_RESET 0x00000001
#define TI_TXSTATE_ENB 0x00000002
#define TI_TXSTATE_STOP 0x00000004
/*
* MAC RX state register
*/
#define TI_RXSTATE_RESET 0x00000001
#define TI_RXSTATE_ENB 0x00000002
#define TI_RXSTATE_STOP 0x00000004
/*
* Tigon 2 mailbox registers. The mailbox area consists of 256 bytes
* split into 64 bit registers. Only the lower 32 bits of each mailbox
* are used.
*/
#define TI_MB_HOSTINTR_HI 0x500
#define TI_MB_HOSTINTR_LO 0x504
#define TI_MB_HOSTINTR TI_MB_HOSTINTR_LO
#define TI_MB_CMDPROD_IDX_HI 0x508
#define TI_MB_CMDPROD_IDX_LO 0x50C
#define TI_MB_CMDPROD_IDX TI_MB_CMDPROD_IDX_LO
#define TI_MB_SENDPROD_IDX_HI 0x510
#define TI_MB_SENDPROD_IDX_LO 0x514
#define TI_MB_SENDPROD_IDX TI_MB_SENDPROD_IDX_LO
#define TI_MB_STDRXPROD_IDX_HI 0x518 /* Tigon 2 only */
#define TI_MB_STDRXPROD_IDX_LO 0x51C /* Tigon 2 only */
#define TI_MB_STDRXPROD_IDX TI_MB_STDRXPROD_IDX_LO
#define TI_MB_JUMBORXPROD_IDX_HI 0x520 /* Tigon 2 only */
#define TI_MB_JUMBORXPROD_IDX_LO 0x524 /* Tigon 2 only */
#define TI_MB_JUMBORXPROD_IDX TI_MB_JUMBORXPROD_IDX_LO
#define TI_MB_MINIRXPROD_IDX_HI 0x528 /* Tigon 2 only */
#define TI_MB_MINIRXPROD_IDX_LO 0x52C /* Tigon 2 only */
#define TI_MB_MINIRXPROD_IDX TI_MB_MINIRXPROD_IDX_LO
#define TI_MB_RSVD 0x530
/*
* Tigon 2 general communication registers. These are 64 and 32 bit
* registers which are only valid after the firmware has been
* loaded and started. They actually exist in NIC memory but are
* mapped into the host memory via the shared memory region.
*
* The NIC internally maps these registers starting at address 0,
* so to determine the NIC address of any of these registers, we
* subtract 0x600 (the address of the first register).
*/
#define TI_GCR_BASE 0x600
#define TI_GCR_MACADDR 0x600
#define TI_GCR_PAR0 0x600
#define TI_GCR_PAR1 0x604
#define TI_GCR_GENINFO_HI 0x608
#define TI_GCR_GENINFO_LO 0x60C
#define TI_GCR_MCASTADDR 0x610 /* obsolete */
#define TI_GCR_MAR0 0x610 /* obsolete */
#define TI_GCR_MAR1 0x614 /* obsolete */
#define TI_GCR_OPMODE 0x618
#define TI_GCR_DMA_READCFG 0x61C
#define TI_GCR_DMA_WRITECFG 0x620
#define TI_GCR_TX_BUFFER_RATIO 0x624
#define TI_GCR_EVENTCONS_IDX 0x628
#define TI_GCR_CMDCONS_IDX 0x62C
#define TI_GCR_TUNEPARMS 0x630
#define TI_GCR_RX_COAL_TICKS 0x630
#define TI_GCR_TX_COAL_TICKS 0x634
#define TI_GCR_STAT_TICKS 0x638
#define TI_GCR_TX_MAX_COAL_BD 0x63C
#define TI_GCR_RX_MAX_COAL_BD 0x640
#define TI_GCR_NIC_TRACING 0x644
#define TI_GCR_GLINK 0x648
#define TI_GCR_LINK 0x64C
#define TI_GCR_NICTRACE_PTR 0x650
#define TI_GCR_NICTRACE_START 0x654
#define TI_GCR_NICTRACE_LEN 0x658
#define TI_GCR_IFINDEX 0x65C
#define TI_GCR_IFMTU 0x660
#define TI_GCR_MASK_INTRS 0x664
#define TI_GCR_GLINK_STAT 0x668
#define TI_GCR_LINK_STAT 0x66C
#define TI_GCR_RXRETURNCONS_IDX 0x680
#define TI_GCR_CMDRING 0x700
#define TI_GCR_NIC_ADDR(x) (x - TI_GCR_BASE)
/*
* Local memory window. The local memory window is a 2K shared
* memory region which can be used to access the NIC's internal
* SRAM. The window can be mapped to a given 2K region using
* the TI_WINDOW_BASE register.
*/
#define TI_WINDOW 0x800
#define TI_WINLEN 0x800
#define TI_TICKS_PER_SEC 1000000
/*
* Operation mode register.
*/
#define TI_OPMODE_BYTESWAP_BD 0x00000002
#define TI_OPMODE_WORDSWAP_BD 0x00000004
#define TI_OPMODE_WARN_ENB 0x00000008 /* not yet implimented */
#define TI_OPMODE_BYTESWAP_DATA 0x00000010
#define TI_OPMODE_1_DMA_ACTIVE 0x00000040
#define TI_OPMODE_SBUS 0x00000100
#define TI_OPMODE_DONT_FRAG_JUMBO 0x00000200
#define TI_OPMODE_INCLUDE_CRC 0x00000400
#define TI_OPMODE_RX_BADFRAMES 0x00000800
#define TI_OPMODE_NO_EVENT_INTRS 0x00001000
#define TI_OPMODE_NO_TX_INTRS 0x00002000
#define TI_OPMODE_NO_RX_INTRS 0x00004000
#define TI_OPMODE_FATAL_ENB 0x40000000 /* not yet implimented */
#define TI_OPMODE_JUMBO_HDRSPLIT 0x00008000
/*
* DMA configuration thresholds.
*/
#define TI_DMA_STATE_THRESH_16W 0x00000100
#define TI_DMA_STATE_THRESH_8W 0x00000080
#define TI_DMA_STATE_THRESH_4W 0x00000040
#define TI_DMA_STATE_THRESH_2W 0x00000020
#define TI_DMA_STATE_THRESH_1W 0x00000010
#define TI_DMA_STATE_FORCE_32_BIT 0x00000008
/*
* Gigabit link status bits.
*/
#define TI_GLNK_SENSE_NO_BEG 0x00002000
#define TI_GLNK_LOOPBACK 0x00004000
#define TI_GLNK_PREF 0x00008000
#define TI_GLNK_1000MB 0x00040000
#define TI_GLNK_FULL_DUPLEX 0x00080000
#define TI_GLNK_TX_FLOWCTL_Y 0x00200000 /* Tigon 2 only */
#define TI_GLNK_RX_FLOWCTL_Y 0x00800000
#define TI_GLNK_AUTONEGENB 0x20000000
#define TI_GLNK_ENB 0x40000000
/*
* Link status bits.
*/
#define TI_LNK_LOOPBACK 0x00004000
#define TI_LNK_PREF 0x00008000
#define TI_LNK_10MB 0x00010000
#define TI_LNK_100MB 0x00020000
#define TI_LNK_1000MB 0x00040000
#define TI_LNK_FULL_DUPLEX 0x00080000
#define TI_LNK_HALF_DUPLEX 0x00100000
#define TI_LNK_TX_FLOWCTL_Y 0x00200000 /* Tigon 2 only */
#define TI_LNK_RX_FLOWCTL_Y 0x00800000
#define TI_LNK_AUTONEGENB 0x20000000
#define TI_LNK_ENB 0x40000000
/*
* Ring size constants.
*/
#define TI_EVENT_RING_CNT 256
#define TI_CMD_RING_CNT 64
#define TI_STD_RX_RING_CNT 512
#define TI_JUMBO_RX_RING_CNT 256
#define TI_MINI_RX_RING_CNT 1024
#define TI_RETURN_RING_CNT 2048
#define TI_MAXTXSEGS 32
/*
* Possible TX ring sizes.
*/
#define TI_TX_RING_CNT_128 128
#define TI_TX_RING_BASE_128 0x3800
#define TI_TX_RING_CNT_256 256
#define TI_TX_RING_BASE_256 0x3000
#define TI_TX_RING_CNT_512 512
#define TI_TX_RING_BASE_512 0x2000
#define TI_TX_RING_CNT TI_TX_RING_CNT_512
#define TI_TX_RING_BASE TI_TX_RING_BASE_512
/*
* The Tigon can have up to 8MB of external SRAM, however the Tigon 1
* is limited to 2MB total, and in general I think most adapters have
* around 1MB. We use this value for zeroing the NIC's SRAM, so to
* be safe we use the largest possible value (zeroing memory that
* isn't there doesn't hurt anything).
*/
#define TI_MEM_MAX 0x7FFFFF
/*
* Maximum register address on the Tigon.
*/
#define TI_REG_MAX 0x3fff
/*
* These values were taken from Alteon's tg.h.
*/
#define TI_BEG_SRAM 0x0 /* host thinks it's here */
#define TI_BEG_SCRATCH 0xc00000 /* beg of scratch pad area */
#define TI_END_SRAM_II 0x800000 /* end of SRAM, for 2 MB stuffed */
#define TI_END_SCRATCH_II 0xc04000 /* end of scratch pad CPU A (16KB) */
#define TI_END_SCRATCH_B 0xc02000 /* end of scratch pad CPU B (8KB) */
#define TI_BEG_SCRATCH_B_DEBUG 0xd00000 /* beg of scratch pad for ioctl */
#define TI_END_SCRATCH_B_DEBUG 0xd02000 /* end of scratch pad for ioctl */
#define TI_SCRATCH_DEBUG_OFF 0x100000 /* offset for ioctl usage */
#define TI_END_SRAM_I 0x200000 /* end of SRAM, for 2 MB stuffed */
#define TI_END_SCRATCH_I 0xc00800 /* end of scratch pad area (2KB) */
#define TI_BEG_PROM 0x40000000 /* beg of PROM, special access */
#define TI_BEG_FLASH 0x80000000 /* beg of EEPROM, special access */
#define TI_END_FLASH 0x80100000 /* end of EEPROM for 1 MB stuff */
#define TI_BEG_SER_EEPROM 0xa0000000 /* beg of Serial EEPROM (fake out) */
#define TI_END_SER_EEPROM 0xa0002000 /* end of Serial EEPROM (fake out) */
#define TI_BEG_REGS 0xc0000000 /* beg of register area */
#define TI_END_REGS 0xc0000400 /* end of register area */
#define TI_END_WRITE_REGS 0xc0000180 /* can't write GPRs currently */
#define TI_BEG_REGS2 0xc0000200 /* beg of second writeable reg area */
/* the EEPROM is byte addressable in a pretty odd way */
#define EEPROM_BYTE_LOC 0xff000000
/*
* From Alteon's tg.h.
*/
#define TI_PROCESSOR_A 0
#define TI_PROCESSOR_B 1
#define TI_CPU_A TG_PROCESSOR_A
#define TI_CPU_B TG_PROCESSOR_B
/*
* Following macro can be used to access to any of the CPU registers
* It will adjust the address appropriately.
* Parameters:
* reg - The register to access, e.g TI_CPU_CONTROL
* cpu - cpu, i.e PROCESSOR_A or PROCESSOR_B (or TI_CPU_A or TI_CPU_B)
*/
#define CPU_REG(reg, cpu) ((reg) + (cpu) * 0x100)
/*
* Even on the alpha, pci addresses are 32-bit quantities
*/
typedef struct {
u_int32_t ti_addr_hi;
u_int32_t ti_addr_lo;
} ti_hostaddr;
#define TI_HOSTADDR(x) x.ti_addr_lo
static __inline void
ti_hostaddr64(ti_hostaddr *x, bus_addr_t addr)
{
uint64_t baddr;
baddr = (uint64_t)addr;
x->ti_addr_lo = baddr & 0xffffffff;
x->ti_addr_hi = baddr >> 32;
}
/*
* Ring control block structure. The rules for the max_len field
* are as follows:
*
* For the send ring, max_len indicates the number of entries in the
* ring (128, 256 or 512).
*
* For the standard receive ring, max_len indicates the threshold
* used to decide when a frame should be put in the jumbo receive ring
* instead of the standard one.
*
* For the mini ring, max_len indicates the size of the buffers in the
* ring. This is the value used to decide when a frame is small enough
* to be placed in the mini ring.
*
* For the return receive ring, max_len indicates the number of entries
* in the ring. It can be one of 2048, 1024 or 0 (which is the same as
* 2048 for backwards compatibility). The value 1024 can only be used
* if the mini ring is disabled.
*/
struct ti_rcb {
ti_hostaddr ti_hostaddr;
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_max_len;
u_int16_t ti_flags;
#else
u_int16_t ti_flags;
u_int16_t ti_max_len;
#endif
u_int32_t ti_unused;
};
#define TI_RCB_FLAG_TCP_UDP_CKSUM 0x00000001
#define TI_RCB_FLAG_IP_CKSUM 0x00000002
#define TI_RCB_FLAG_NO_PHDR_CKSUM 0x00000008
#define TI_RCB_FLAG_VLAN_ASSIST 0x00000010
#define TI_RCB_FLAG_COAL_UPD_ONLY 0x00000020
#define TI_RCB_FLAG_HOST_RING 0x00000040
#define TI_RCB_FLAG_IEEE_SNAP_CKSUM 0x00000080
#define TI_RCB_FLAG_USE_EXT_RX_BD 0x00000100
#define TI_RCB_FLAG_RING_DISABLED 0x00000200
struct ti_producer {
u_int32_t ti_idx;
u_int32_t ti_unused;
};
/*
* Tigon general information block. This resides in host memory
* and contains the status counters, ring control blocks and
* producer pointers.
*/
struct ti_gib {
struct ti_stats ti_stats;
struct ti_rcb ti_ev_rcb;
struct ti_rcb ti_cmd_rcb;
struct ti_rcb ti_tx_rcb;
struct ti_rcb ti_std_rx_rcb;
struct ti_rcb ti_jumbo_rx_rcb;
struct ti_rcb ti_mini_rx_rcb;
struct ti_rcb ti_return_rcb;
ti_hostaddr ti_ev_prodidx_ptr;
ti_hostaddr ti_return_prodidx_ptr;
ti_hostaddr ti_tx_considx_ptr;
ti_hostaddr ti_refresh_stats_ptr;
};
/*
* Buffer descriptor structures. There are basically three types
* of structures: normal receive descriptors, extended receive
* descriptors and transmit descriptors. The extended receive
* descriptors are optionally used only for the jumbo receive ring.
*/
struct ti_rx_desc {
ti_hostaddr ti_addr;
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_idx;
u_int16_t ti_len;
#else
u_int16_t ti_len;
u_int16_t ti_idx;
#endif
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_type;
u_int16_t ti_flags;
#else
u_int16_t ti_flags;
u_int16_t ti_type;
#endif
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_ip_cksum;
u_int16_t ti_tcp_udp_cksum;
#else
u_int16_t ti_tcp_udp_cksum;
u_int16_t ti_ip_cksum;
#endif
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_error_flags;
u_int16_t ti_vlan_tag;
#else
u_int16_t ti_vlan_tag;
u_int16_t ti_error_flags;
#endif
u_int32_t ti_rsvd;
u_int32_t ti_opaque;
};
struct ti_rx_desc_ext {
ti_hostaddr ti_addr1;
ti_hostaddr ti_addr2;
ti_hostaddr ti_addr3;
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_len1;
u_int16_t ti_len2;
#else
u_int16_t ti_len2;
u_int16_t ti_len1;
#endif
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_len3;
u_int16_t ti_rsvd0;
#else
u_int16_t ti_rsvd0;
u_int16_t ti_len3;
#endif
ti_hostaddr ti_addr0;
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_idx;
u_int16_t ti_len0;
#else
u_int16_t ti_len0;
u_int16_t ti_idx;
#endif
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_type;
u_int16_t ti_flags;
#else
u_int16_t ti_flags;
u_int16_t ti_type;
#endif
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_ip_cksum;
u_int16_t ti_tcp_udp_cksum;
#else
u_int16_t ti_tcp_udp_cksum;
u_int16_t ti_ip_cksum;
#endif
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_error_flags;
u_int16_t ti_vlan_tag;
#else
u_int16_t ti_vlan_tag;
u_int16_t ti_error_flags;
#endif
u_int32_t ti_rsvd1;
u_int32_t ti_opaque;
};
/*
* Transmit descriptors are, mercifully, very small.
*/
struct ti_tx_desc {
ti_hostaddr ti_addr;
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_len;
u_int16_t ti_flags;
#else
u_int16_t ti_flags;
u_int16_t ti_len;
#endif
#if BYTE_ORDER == BIG_ENDIAN
u_int16_t ti_rsvd;
u_int16_t ti_vlan_tag;
#else
u_int16_t ti_vlan_tag;
u_int16_t ti_rsvd;
#endif
};
/*
* NOTE! On the Alpha, we have an alignment constraint.
* The first thing in the packet is a 14-byte Ethernet header.
* This means that the packet is misaligned. To compensate,
* we actually offset the data 2 bytes into the cluster. This
* aligns the packet after the Ethernet header at a 32-bit
* boundary.
*/
#define TI_FRAMELEN 1518
#define TI_JUMBO_FRAMELEN 9018
#define TI_JUMBO_MTU (TI_JUMBO_FRAMELEN-ETHER_HDR_LEN-ETHER_CRC_LEN)
#define TI_PAGE_SIZE PAGE_SIZE
#define TI_MIN_FRAMELEN 60
/*
* Buffer descriptor error flags.
*/
#define TI_BDERR_CRC 0x0001
#define TI_BDERR_COLLDETECT 0x0002
#define TI_BDERR_LINKLOST 0x0004
#define TI_BDERR_DECODE 0x0008
#define TI_BDERR_ODD_NIBBLES 0x0010
#define TI_BDERR_MAC_ABRT 0x0020
#define TI_BDERR_RUNT 0x0040
#define TI_BDERR_TRUNC 0x0080
#define TI_BDERR_GIANT 0x0100
/*
* Buffer descriptor flags.
*/
#define TI_BDFLAG_TCP_UDP_CKSUM 0x0001
#define TI_BDFLAG_IP_CKSUM 0x0002
#define TI_BDFLAG_END 0x0004
#define TI_BDFLAG_MORE 0x0008
#define TI_BDFLAG_JUMBO_RING 0x0010
#define TI_BDFLAG_UCAST_PKT 0x0020
#define TI_BDFLAG_MCAST_PKT 0x0040
#define TI_BDFLAG_BCAST_PKT 0x0060
#define TI_BDFLAG_IP_FRAG 0x0080
#define TI_BDFLAG_IP_FRAG_END 0x0100
#define TI_BDFLAG_VLAN_TAG 0x0200
#define TI_BDFLAG_ERROR 0x0400
#define TI_BDFLAG_COAL_NOW 0x0800
#define TI_BDFLAG_MINI_RING 0x1000
/*
* Descriptor type flags. I think these only have meaning for
* the Tigon 1. I had to extract them from the sample driver source
* since they aren't in the manual.
*/
#define TI_BDTYPE_TYPE_NULL 0x0000
#define TI_BDTYPE_SEND_BD 0x0001
#define TI_BDTYPE_RECV_BD 0x0002
#define TI_BDTYPE_RECV_JUMBO_BD 0x0003
#define TI_BDTYPE_RECV_BD_LAST 0x0004
#define TI_BDTYPE_SEND_DATA 0x0005
#define TI_BDTYPE_SEND_DATA_LAST 0x0006
#define TI_BDTYPE_RECV_DATA 0x0007
#define TI_BDTYPE_RECV_DATA_LAST 0x000b
#define TI_BDTYPE_EVENT_RUPT 0x000c
#define TI_BDTYPE_EVENT_NO_RUPT 0x000d
#define TI_BDTYPE_ODD_START 0x000e
#define TI_BDTYPE_UPDATE_STATS 0x000f
#define TI_BDTYPE_SEND_DUMMY_DMA 0x0010
#define TI_BDTYPE_EVENT_PROD 0x0011
#define TI_BDTYPE_TX_CONS 0x0012
#define TI_BDTYPE_RX_PROD 0x0013
#define TI_BDTYPE_REFRESH_STATS 0x0014
#define TI_BDTYPE_SEND_DATA_LAST_VLAN 0x0015
#define TI_BDTYPE_SEND_DATA_COAL 0x0016
#define TI_BDTYPE_SEND_DATA_LAST_COAL 0x0017
#define TI_BDTYPE_SEND_DATA_LAST_VLAN_COAL 0x0018
#define TI_BDTYPE_TX_CONS_NO_INTR 0x0019
/*
* Tigon command structure.
*/
struct ti_cmd_desc {
u_int32_t ti_cmdx;
};
#define TI_CMD_CMD(cmd) (((((cmd)->ti_cmdx)) >> 24) & 0xff)
#define TI_CMD_CODE(cmd) (((((cmd)->ti_cmdx)) >> 12) & 0xfff)
#define TI_CMD_IDX(cmd) ((((cmd)->ti_cmdx)) & 0xfff)
#define TI_CMD_HOST_STATE 0x01
#define TI_CMD_CODE_STACK_UP 0x01
#define TI_CMD_CODE_STACK_DOWN 0x02
/*
* This command enables software address filtering. It's a workaround
* for a bug in the Tigon 1 and not implemented for the Tigon 2.
*/
#define TI_CMD_FDR_FILTERING 0x02
#define TI_CMD_CODE_FILT_ENB 0x01
#define TI_CMD_CODE_FILT_DIS 0x02
#define TI_CMD_SET_RX_PROD_IDX 0x03 /* obsolete */
#define TI_CMD_UPDATE_GENCOM 0x04
#define TI_CMD_RESET_JUMBO_RING 0x05
#define TI_CMD_SET_PARTIAL_RX_CNT 0x06
#define TI_CMD_ADD_MCAST_ADDR 0x08 /* obsolete */
#define TI_CMD_DEL_MCAST_ADDR 0x09 /* obsolete */
#define TI_CMD_SET_PROMISC_MODE 0x0A
#define TI_CMD_CODE_PROMISC_ENB 0x01
#define TI_CMD_CODE_PROMISC_DIS 0x02
#define TI_CMD_LINK_NEGOTIATION 0x0B
#define TI_CMD_CODE_NEGOTIATE_BOTH 0x00
#define TI_CMD_CODE_NEGOTIATE_GIGABIT 0x01
#define TI_CMD_CODE_NEGOTIATE_10_100 0x02
#define TI_CMD_SET_MAC_ADDR 0x0C
#define TI_CMD_CLR_PROFILE 0x0D
#define TI_CMD_SET_ALLMULTI 0x0E
#define TI_CMD_CODE_ALLMULTI_ENB 0x01
#define TI_CMD_CODE_ALLMULTI_DIS 0x02
#define TI_CMD_CLR_STATS 0x0F
#define TI_CMD_SET_RX_JUMBO_PROD_IDX 0x10 /* obsolete */
#define TI_CMD_RFRSH_STATS 0x11
#define TI_CMD_EXT_ADD_MCAST 0x12
#define TI_CMD_EXT_DEL_MCAST 0x13
/*
* Utility macros to make issuing commands a little simpler. Assumes
* that 'sc' and 'cmd' are in local scope.
*/
#define TI_DO_CMD(x, y, z) do { \
cmd.ti_cmdx = (((x) << 24) | ((y) << 12) | ((z))); \
ti_cmd(sc, &cmd); \
} while(0)
#define TI_DO_CMD_EXT(x, y, z, v, w) do { \
cmd.ti_cmdx = (((x) << 24) | ((y) << 12) | ((z))); \
ti_cmd_ext(sc, &cmd, (v), (w)); \
} while(0)
/*
* Other utility macros.
*/
#define TI_INC(x, y) (x) = ((x) + 1) % y
#define TI_UPDATE_JUMBOPROD(x, y) do { \
if ((x)->ti_hwrev == TI_HWREV_TIGON) \
TI_DO_CMD(TI_CMD_SET_RX_JUMBO_PROD_IDX, 0, (y)); \
else \
CSR_WRITE_4((x), TI_MB_JUMBORXPROD_IDX, (y)); \
} while(0)
#define TI_UPDATE_MINIPROD(x, y) \
CSR_WRITE_4((x), TI_MB_MINIRXPROD_IDX, (y))
#define TI_UPDATE_STDPROD(x, y) do { \
if ((x)->ti_hwrev == TI_HWREV_TIGON) \
TI_DO_CMD(TI_CMD_SET_RX_PROD_IDX, 0, (y)); \
else \
CSR_WRITE_4((x), TI_MB_STDRXPROD_IDX, (y)); \
} while(0)
/*
* Tigon event structure.
*/
struct ti_event_desc {
u_int32_t ti_eventx;
u_int32_t ti_rsvd;
};
#define TI_EVENT_EVENT(e) (((((e)->ti_eventx)) >> 24) & 0xff)
#define TI_EVENT_CODE(e) (((((e)->ti_eventx)) >> 12) & 0xfff)
#define TI_EVENT_IDX(e) (((((e)->ti_eventx))) & 0xfff)
/*
* Tigon events.
*/
#define TI_EV_FIRMWARE_UP 0x01
#define TI_EV_STATS_UPDATED 0x04
#define TI_EV_LINKSTAT_CHANGED 0x06
#define TI_EV_CODE_GIG_LINK_UP 0x01
#define TI_EV_CODE_LINK_DOWN 0x02
#define TI_EV_CODE_LINK_UP 0x03
#define TI_EV_ERROR 0x07
#define TI_EV_CODE_ERR_INVAL_CMD 0x01
#define TI_EV_CODE_ERR_UNIMP_CMD 0x02
#define TI_EV_CODE_ERR_BADCFG 0x03
#define TI_EV_MCAST_UPDATED 0x08
#define TI_EV_CODE_MCAST_ADD 0x01
#define TI_EV_CODE_MCAST_DEL 0x02
#define TI_EV_RESET_JUMBO_RING 0x09
/*
* Register access macros. The Tigon always uses memory mapped register
* accesses and all registers must be accessed with 32 bit operations.
*/
#define CSR_WRITE_4(sc, reg, val) \
bus_space_write_4((sc)->ti_btag, (sc)->ti_bhandle, (reg), (val))
#define CSR_READ_4(sc, reg) \
bus_space_read_4((sc)->ti_btag, (sc)->ti_bhandle, (reg))
#define TI_SETBIT(sc, reg, x) \
CSR_WRITE_4((sc), (reg), (CSR_READ_4((sc), (reg)) | (x)))
#define TI_CLRBIT(sc, reg, x) \
CSR_WRITE_4((sc), (reg), (CSR_READ_4((sc), (reg)) & ~(x)))
/*
* Memory management stuff. Note: the SSLOTS, MSLOTS and JSLOTS
* values are tuneable. They control the actual amount of buffers
* allocated for the standard, mini and jumbo receive rings.
*/
#define TI_SSLOTS 256
#define TI_MSLOTS 256
#define TI_JSLOTS 256
#define TI_JRAWLEN (TI_JUMBO_FRAMELEN + ETHER_ALIGN)
#define TI_JLEN (TI_JRAWLEN + (sizeof(u_int64_t) - \
(TI_JRAWLEN % sizeof(u_int64_t))))
#define TI_JPAGESZ PAGE_SIZE
#define TI_RESID (TI_JPAGESZ - (TI_JLEN * TI_JSLOTS) % TI_JPAGESZ)
#define TI_JMEM ((TI_JLEN * TI_JSLOTS) + TI_RESID)
struct ti_txdesc {
struct mbuf *tx_m;
bus_dmamap_t tx_dmamap;
STAILQ_ENTRY(ti_txdesc) tx_q;
};
STAILQ_HEAD(ti_txdq, ti_txdesc);
/*
* Ring structures. Most of these reside in host memory and we tell
* the NIC where they are via the ring control blocks. The exceptions
* are the tx and command rings, which live in NIC memory and which
* we access via the shared memory window.
*/
struct ti_ring_data {
struct ti_rx_desc ti_rx_std_ring[TI_STD_RX_RING_CNT];
#ifdef TI_PRIVATE_JUMBOS
struct ti_rx_desc ti_rx_jumbo_ring[TI_JUMBO_RX_RING_CNT];
#else
struct ti_rx_desc_ext ti_rx_jumbo_ring[TI_JUMBO_RX_RING_CNT];
#endif
struct ti_rx_desc ti_rx_mini_ring[TI_MINI_RX_RING_CNT];
struct ti_rx_desc ti_rx_return_ring[TI_RETURN_RING_CNT];
struct ti_event_desc ti_event_ring[TI_EVENT_RING_CNT];
struct ti_tx_desc ti_tx_ring[TI_TX_RING_CNT];
/*
* Make sure producer structures are aligned on 32-byte cache
* line boundaries.
*/
struct ti_producer ti_ev_prodidx_r;
u_int32_t ti_pad0[6];
struct ti_producer ti_return_prodidx_r;
u_int32_t ti_pad1[6];
struct ti_producer ti_tx_considx_r;
u_int32_t ti_pad2[6];
struct ti_gib ti_info;
};
#define TI_RD_OFF(x) offsetof(struct ti_ring_data, x)
/*
* Mbuf pointers. We need these to keep track of the virtual addresses
* of our mbuf chains since we can only convert from physical to virtual,
* not the other way around.
*/
struct ti_chain_data {
struct ti_txdesc ti_txdesc[TI_TX_RING_CNT];
struct ti_txdq ti_txfreeq;
struct ti_txdq ti_txbusyq;
struct mbuf *ti_rx_std_chain[TI_STD_RX_RING_CNT];
bus_dmamap_t ti_rx_std_maps[TI_STD_RX_RING_CNT];
struct mbuf *ti_rx_jumbo_chain[TI_JUMBO_RX_RING_CNT];
bus_dmamap_t ti_rx_jumbo_maps[TI_JUMBO_RX_RING_CNT];
struct mbuf *ti_rx_mini_chain[TI_MINI_RX_RING_CNT];
bus_dmamap_t ti_rx_mini_maps[TI_MINI_RX_RING_CNT];
/* Stick the jumbo mem management stuff here too. */
caddr_t ti_jslots[TI_JSLOTS];
void *ti_jumbo_buf;
};
struct ti_type {
u_int16_t ti_vid;
u_int16_t ti_did;
char *ti_name;
};
#define TI_HWREV_TIGON 0x01
#define TI_HWREV_TIGON_II 0x02
#define TI_TIMEOUT 1000
#define TI_TXCONS_UNSET 0xFFFF /* impossible value */
struct ti_mc_entry {
struct ether_addr mc_addr;
SLIST_ENTRY(ti_mc_entry) mc_entries;
};
struct ti_jpool_entry {
int slot;
SLIST_ENTRY(ti_jpool_entry) jpool_entries;
};
typedef enum {
TI_FLAG_NONE = 0x00,
TI_FLAG_DEBUGING = 0x01,
TI_FLAG_WAIT_FOR_LINK = 0x02
} ti_flag_vals;
struct ti_softc {
device_t ti_dev;
struct ifnet *ti_ifp;
bus_space_handle_t ti_bhandle;
bus_space_tag_t ti_btag;
void *ti_intrhand;
struct resource *ti_irq;
struct resource *ti_res;
struct ifmedia ifmedia; /* media info */
u_int8_t ti_unit; /* interface number */
u_int8_t ti_hwrev; /* Tigon rev (1 or 2) */
u_int8_t ti_copper; /* 1000baseTX card */
u_int8_t ti_linkstat; /* Link state */
int ti_hdrsplit; /* enable header splitting */
bus_dma_tag_t ti_parent_dmat;
bus_dma_tag_t ti_jumbo_dmat;
bus_dmamap_t ti_jumbo_dmamap;
bus_dma_tag_t ti_mbuftx_dmat;
bus_dma_tag_t ti_mbufrx_dmat;
bus_dma_tag_t ti_rdata_dmat;
bus_dmamap_t ti_rdata_dmamap;
bus_addr_t ti_rdata_phys;
struct ti_ring_data *ti_rdata; /* rings */
struct ti_chain_data ti_cdata; /* mbufs */
#define ti_ev_prodidx ti_rdata->ti_ev_prodidx_r
#define ti_return_prodidx ti_rdata->ti_return_prodidx_r
#define ti_tx_considx ti_rdata->ti_tx_considx_r
int ti_tx_saved_prodidx;
int ti_tx_saved_considx;
int ti_rx_saved_considx;
int ti_ev_saved_considx;
int ti_cmd_saved_prodidx;
int ti_std; /* current std ring head */
int ti_mini; /* current mini ring head */
int ti_jumbo; /* current jumo ring head */
SLIST_HEAD(__ti_mchead, ti_mc_entry) ti_mc_listhead;
SLIST_HEAD(__ti_jfreehead, ti_jpool_entry) ti_jfree_listhead;
SLIST_HEAD(__ti_jinusehead, ti_jpool_entry) ti_jinuse_listhead;
u_int32_t ti_stat_ticks;
u_int32_t ti_rx_coal_ticks;
u_int32_t ti_tx_coal_ticks;
u_int32_t ti_rx_max_coal_bds;
u_int32_t ti_tx_max_coal_bds;
u_int32_t ti_tx_buf_ratio;
int ti_if_flags;
int ti_txcnt;
struct mtx ti_mtx;
ti_flag_vals ti_flags;
struct cdev *dev;
};
#define TI_LOCK(_sc) mtx_lock(&(_sc)->ti_mtx)
#define TI_UNLOCK(_sc) mtx_unlock(&(_sc)->ti_mtx)
#define TI_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->ti_mtx, MA_OWNED)
/*
* Microchip Technology 24Cxx EEPROM control bytes
*/
#define EEPROM_CTL_READ 0xA1 /* 0101 0001 */
#define EEPROM_CTL_WRITE 0xA0 /* 0101 0000 */
/*
* Note that EEPROM_START leaves transmission enabled.
*/
#define EEPROM_START do { \
TI_SETBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_CLK); /* Pull clock pin high */\
TI_SETBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_DOUT); /* Set DATA bit to 1 */ \
TI_SETBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_TXEN); /* Enable xmit to write bit */\
TI_CLRBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_DOUT); /* Pull DATA bit to 0 again */\
TI_CLRBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_CLK); /* Pull clock low again */ \
} while(0)
/*
* EEPROM_STOP ends access to the EEPROM and clears the ETXEN bit so
* that no further data can be written to the EEPROM I/O pin.
*/
#define EEPROM_STOP do { \
TI_CLRBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_TXEN); /* Disable xmit */ \
TI_CLRBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_DOUT); /* Pull DATA to 0 */ \
TI_SETBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_CLK); /* Pull clock high */ \
TI_SETBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_TXEN); /* Enable xmit */ \
TI_SETBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_DOUT); /* Toggle DATA to 1 */ \
TI_CLRBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_TXEN); /* Disable xmit. */ \
TI_CLRBIT(sc, TI_MISC_LOCAL_CTL, TI_MLC_EE_CLK); /* Pull clock low again */ \
} while(0)
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