mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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![Tejun Heo](/assets/img/avatar_default.png)
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
563 lines
15 KiB
C
563 lines
15 KiB
C
/*
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* Tehuti Networks(R) Network Driver
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* Copyright (C) 2007 Tehuti Networks Ltd. All rights reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef _TEHUTI_H
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#define _TEHUTI_H
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/netdevice.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/ethtool.h>
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#include <linux/mii.h>
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#include <linux/crc32.h>
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#include <linux/uaccess.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/sched.h>
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#include <linux/tty.h>
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#include <linux/if_vlan.h>
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#include <linux/interrupt.h>
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#include <linux/vmalloc.h>
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#include <linux/firmware.h>
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#include <asm/byteorder.h>
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#include <linux/dma-mapping.h>
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#include <linux/slab.h>
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/* Compile Time Switches */
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/* start */
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#define BDX_TSO
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#define BDX_LLTX
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#define BDX_DELAY_WPTR
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/* #define BDX_MSI */
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/* end */
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#if !defined CONFIG_PCI_MSI
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# undef BDX_MSI
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#endif
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#define BDX_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
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NETIF_MSG_PROBE | \
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NETIF_MSG_LINK)
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/* ioctl ops */
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#define BDX_OP_READ 1
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#define BDX_OP_WRITE 2
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/* RX copy break size */
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#define BDX_COPYBREAK 257
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#define DRIVER_AUTHOR "Tehuti Networks(R)"
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#define BDX_DRV_DESC "Tehuti Networks(R) Network Driver"
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#define BDX_DRV_NAME "tehuti"
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#define BDX_NIC_NAME "Tehuti 10 Giga TOE SmartNIC"
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#define BDX_NIC2PORT_NAME "Tehuti 2-Port 10 Giga TOE SmartNIC"
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#define BDX_DRV_VERSION "7.29.3"
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#ifdef BDX_MSI
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# define BDX_MSI_STRING "msi "
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#else
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# define BDX_MSI_STRING ""
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#endif
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/* netdev tx queue len for Luxor. default value is, btw, 1000
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* ifcontig eth1 txqueuelen 3000 - to change it at runtime */
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#define BDX_NDEV_TXQ_LEN 3000
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#define FIFO_SIZE 4096
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#define FIFO_EXTRA_SPACE 1024
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#if BITS_PER_LONG == 64
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# define H32_64(x) (u32) ((u64)(x) >> 32)
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# define L32_64(x) (u32) ((u64)(x) & 0xffffffff)
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#elif BITS_PER_LONG == 32
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# define H32_64(x) 0
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# define L32_64(x) ((u32) (x))
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#else /* BITS_PER_LONG == ?? */
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# error BITS_PER_LONG is undefined. Must be 64 or 32
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#endif /* BITS_PER_LONG */
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#ifdef __BIG_ENDIAN
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# define CPU_CHIP_SWAP32(x) swab32(x)
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# define CPU_CHIP_SWAP16(x) swab16(x)
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#else
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# define CPU_CHIP_SWAP32(x) (x)
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# define CPU_CHIP_SWAP16(x) (x)
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#endif
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#define READ_REG(pp, reg) readl(pp->pBdxRegs + reg)
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#define WRITE_REG(pp, reg, val) writel(val, pp->pBdxRegs + reg)
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#ifndef NET_IP_ALIGN
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# define NET_IP_ALIGN 2
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#endif
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#ifndef NETDEV_TX_OK
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# define NETDEV_TX_OK 0
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#endif
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#define LUXOR_MAX_PORT 2
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#define BDX_MAX_RX_DONE 150
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#define BDX_TXF_DESC_SZ 16
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#define BDX_MAX_TX_LEVEL (priv->txd_fifo0.m.memsz - 16)
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#define BDX_MIN_TX_LEVEL 256
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#define BDX_NO_UPD_PACKETS 40
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struct pci_nic {
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int port_num;
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void __iomem *regs;
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int irq_type;
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struct bdx_priv *priv[LUXOR_MAX_PORT];
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};
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enum { IRQ_INTX, IRQ_MSI, IRQ_MSIX };
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#define PCK_TH_MULT 128
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#define INT_COAL_MULT 2
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#define BITS_MASK(nbits) ((1<<nbits)-1)
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#define GET_BITS_SHIFT(x, nbits, nshift) (((x)>>nshift)&BITS_MASK(nbits))
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#define BITS_SHIFT_MASK(nbits, nshift) (BITS_MASK(nbits)<<nshift)
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#define BITS_SHIFT_VAL(x, nbits, nshift) (((x)&BITS_MASK(nbits))<<nshift)
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#define BITS_SHIFT_CLEAR(x, nbits, nshift) \
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((x)&(~BITS_SHIFT_MASK(nbits, nshift)))
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#define GET_INT_COAL(x) GET_BITS_SHIFT(x, 15, 0)
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#define GET_INT_COAL_RC(x) GET_BITS_SHIFT(x, 1, 15)
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#define GET_RXF_TH(x) GET_BITS_SHIFT(x, 4, 16)
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#define GET_PCK_TH(x) GET_BITS_SHIFT(x, 4, 20)
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#define INT_REG_VAL(coal, coal_rc, rxf_th, pck_th) \
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((coal)|((coal_rc)<<15)|((rxf_th)<<16)|((pck_th)<<20))
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struct fifo {
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dma_addr_t da; /* physical address of fifo (used by HW) */
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char *va; /* virtual address of fifo (used by SW) */
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u32 rptr, wptr; /* cached values of RPTR and WPTR registers,
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they're 32 bits on both 32 and 64 archs */
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u16 reg_CFG0, reg_CFG1;
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u16 reg_RPTR, reg_WPTR;
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u16 memsz; /* memory size allocated for fifo */
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u16 size_mask;
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u16 pktsz; /* skb packet size to allocate */
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u16 rcvno; /* number of buffers that come from this RXF */
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};
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struct txf_fifo {
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struct fifo m; /* minimal set of variables used by all fifos */
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};
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struct txd_fifo {
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struct fifo m; /* minimal set of variables used by all fifos */
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};
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struct rxf_fifo {
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struct fifo m; /* minimal set of variables used by all fifos */
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};
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struct rxd_fifo {
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struct fifo m; /* minimal set of variables used by all fifos */
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};
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struct rx_map {
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u64 dma;
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struct sk_buff *skb;
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};
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struct rxdb {
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int *stack;
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struct rx_map *elems;
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int nelem;
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int top;
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};
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union bdx_dma_addr {
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dma_addr_t dma;
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struct sk_buff *skb;
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};
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/* Entry in the db.
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* if len == 0 addr is dma
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* if len != 0 addr is skb */
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struct tx_map {
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union bdx_dma_addr addr;
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int len;
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};
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/* tx database - implemented as circular fifo buffer*/
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struct txdb {
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struct tx_map *start; /* points to the first element */
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struct tx_map *end; /* points just AFTER the last element */
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struct tx_map *rptr; /* points to the next element to read */
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struct tx_map *wptr; /* points to the next element to write */
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int size; /* number of elements in the db */
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};
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/*Internal stats structure*/
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struct bdx_stats {
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u64 InUCast; /* 0x7200 */
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u64 InMCast; /* 0x7210 */
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u64 InBCast; /* 0x7220 */
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u64 InPkts; /* 0x7230 */
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u64 InErrors; /* 0x7240 */
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u64 InDropped; /* 0x7250 */
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u64 FrameTooLong; /* 0x7260 */
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u64 FrameSequenceErrors; /* 0x7270 */
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u64 InVLAN; /* 0x7280 */
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u64 InDroppedDFE; /* 0x7290 */
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u64 InDroppedIntFull; /* 0x72A0 */
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u64 InFrameAlignErrors; /* 0x72B0 */
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/* 0x72C0-0x72E0 RSRV */
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u64 OutUCast; /* 0x72F0 */
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u64 OutMCast; /* 0x7300 */
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u64 OutBCast; /* 0x7310 */
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u64 OutPkts; /* 0x7320 */
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/* 0x7330-0x7360 RSRV */
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u64 OutVLAN; /* 0x7370 */
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u64 InUCastOctects; /* 0x7380 */
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u64 OutUCastOctects; /* 0x7390 */
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/* 0x73A0-0x73B0 RSRV */
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u64 InBCastOctects; /* 0x73C0 */
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u64 OutBCastOctects; /* 0x73D0 */
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u64 InOctects; /* 0x73E0 */
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u64 OutOctects; /* 0x73F0 */
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};
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struct bdx_priv {
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void __iomem *pBdxRegs;
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struct net_device *ndev;
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struct napi_struct napi;
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/* RX FIFOs: 1 for data (full) descs, and 2 for free descs */
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struct rxd_fifo rxd_fifo0;
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struct rxf_fifo rxf_fifo0;
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struct rxdb *rxdb; /* rx dbs to store skb pointers */
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int napi_stop;
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struct vlan_group *vlgrp;
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/* Tx FIFOs: 1 for data desc, 1 for empty (acks) desc */
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struct txd_fifo txd_fifo0;
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struct txf_fifo txf_fifo0;
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struct txdb txdb;
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int tx_level;
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#ifdef BDX_DELAY_WPTR
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int tx_update_mark;
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int tx_noupd;
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#endif
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spinlock_t tx_lock; /* NETIF_F_LLTX mode */
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/* rarely used */
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u8 port;
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u32 msg_enable;
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int stats_flag;
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struct bdx_stats hw_stats;
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struct net_device_stats net_stats;
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struct pci_dev *pdev;
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struct pci_nic *nic;
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u8 txd_size;
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u8 txf_size;
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u8 rxd_size;
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u8 rxf_size;
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u32 rdintcm;
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u32 tdintcm;
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};
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/* RX FREE descriptor - 64bit*/
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struct rxf_desc {
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u32 info; /* Buffer Count + Info - described below */
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u32 va_lo; /* VAdr[31:0] */
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u32 va_hi; /* VAdr[63:32] */
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u32 pa_lo; /* PAdr[31:0] */
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u32 pa_hi; /* PAdr[63:32] */
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u32 len; /* Buffer Length */
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};
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#define GET_RXD_BC(x) GET_BITS_SHIFT((x), 5, 0)
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#define GET_RXD_RXFQ(x) GET_BITS_SHIFT((x), 2, 8)
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#define GET_RXD_TO(x) GET_BITS_SHIFT((x), 1, 15)
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#define GET_RXD_TYPE(x) GET_BITS_SHIFT((x), 4, 16)
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#define GET_RXD_ERR(x) GET_BITS_SHIFT((x), 6, 21)
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#define GET_RXD_RXP(x) GET_BITS_SHIFT((x), 1, 27)
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#define GET_RXD_PKT_ID(x) GET_BITS_SHIFT((x), 3, 28)
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#define GET_RXD_VTAG(x) GET_BITS_SHIFT((x), 1, 31)
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#define GET_RXD_VLAN_ID(x) GET_BITS_SHIFT((x), 12, 0)
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#define GET_RXD_VLAN_TCI(x) GET_BITS_SHIFT((x), 16, 0)
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#define GET_RXD_CFI(x) GET_BITS_SHIFT((x), 1, 12)
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#define GET_RXD_PRIO(x) GET_BITS_SHIFT((x), 3, 13)
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struct rxd_desc {
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u32 rxd_val1;
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u16 len;
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u16 rxd_vlan;
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u32 va_lo;
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u32 va_hi;
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};
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/* PBL describes each virtual buffer to be */
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/* transmitted from the host.*/
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struct pbl {
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u32 pa_lo;
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u32 pa_hi;
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u32 len;
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};
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/* First word for TXD descriptor. It means: type = 3 for regular Tx packet,
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* hw_csum = 7 for ip+udp+tcp hw checksums */
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#define TXD_W1_VAL(bc, checksum, vtag, lgsnd, vlan_id) \
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((bc) | ((checksum)<<5) | ((vtag)<<8) | \
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((lgsnd)<<9) | (0x30000) | ((vlan_id)<<20))
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struct txd_desc {
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u32 txd_val1;
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u16 mss;
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u16 length;
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u32 va_lo;
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u32 va_hi;
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struct pbl pbl[0]; /* Fragments */
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} __attribute__ ((packed));
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/* Register region size */
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#define BDX_REGS_SIZE 0x1000
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/* Registers from 0x0000-0x00fc were remapped to 0x4000-0x40fc */
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#define regTXD_CFG1_0 0x4000
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#define regRXF_CFG1_0 0x4010
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#define regRXD_CFG1_0 0x4020
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#define regTXF_CFG1_0 0x4030
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#define regTXD_CFG0_0 0x4040
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#define regRXF_CFG0_0 0x4050
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#define regRXD_CFG0_0 0x4060
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#define regTXF_CFG0_0 0x4070
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#define regTXD_WPTR_0 0x4080
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#define regRXF_WPTR_0 0x4090
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#define regRXD_WPTR_0 0x40A0
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#define regTXF_WPTR_0 0x40B0
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#define regTXD_RPTR_0 0x40C0
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#define regRXF_RPTR_0 0x40D0
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#define regRXD_RPTR_0 0x40E0
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#define regTXF_RPTR_0 0x40F0
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#define regTXF_RPTR_3 0x40FC
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/* hardware versioning */
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#define FW_VER 0x5010
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#define SROM_VER 0x5020
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#define FPGA_VER 0x5030
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#define FPGA_SEED 0x5040
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/* Registers from 0x0100-0x0150 were remapped to 0x5100-0x5150 */
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#define regISR regISR0
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#define regISR0 0x5100
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#define regIMR regIMR0
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#define regIMR0 0x5110
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#define regRDINTCM0 0x5120
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#define regRDINTCM2 0x5128
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#define regTDINTCM0 0x5130
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#define regISR_MSK0 0x5140
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#define regINIT_SEMAPHORE 0x5170
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#define regINIT_STATUS 0x5180
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#define regMAC_LNK_STAT 0x0200
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#define MAC_LINK_STAT 0x4 /* Link state */
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#define regGMAC_RXF_A 0x1240
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#define regUNC_MAC0_A 0x1250
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#define regUNC_MAC1_A 0x1260
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#define regUNC_MAC2_A 0x1270
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#define regVLAN_0 0x1800
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#define regMAX_FRAME_A 0x12C0
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#define regRX_MAC_MCST0 0x1A80
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#define regRX_MAC_MCST1 0x1A84
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#define MAC_MCST_NUM 15
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#define regRX_MCST_HASH0 0x1A00
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#define MAC_MCST_HASH_NUM 8
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#define regVPC 0x2300
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#define regVIC 0x2320
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#define regVGLB 0x2340
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#define regCLKPLL 0x5000
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/*for 10G only*/
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#define regREVISION 0x6000
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#define regSCRATCH 0x6004
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#define regCTRLST 0x6008
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#define regMAC_ADDR_0 0x600C
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#define regMAC_ADDR_1 0x6010
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#define regFRM_LENGTH 0x6014
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#define regPAUSE_QUANT 0x6018
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#define regRX_FIFO_SECTION 0x601C
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#define regTX_FIFO_SECTION 0x6020
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#define regRX_FULLNESS 0x6024
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#define regTX_FULLNESS 0x6028
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#define regHASHTABLE 0x602C
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#define regMDIO_ST 0x6030
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#define regMDIO_CTL 0x6034
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#define regMDIO_DATA 0x6038
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#define regMDIO_ADDR 0x603C
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#define regRST_PORT 0x7000
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#define regDIS_PORT 0x7010
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#define regRST_QU 0x7020
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#define regDIS_QU 0x7030
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#define regCTRLST_TX_ENA 0x0001
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#define regCTRLST_RX_ENA 0x0002
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#define regCTRLST_PRM_ENA 0x0010
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#define regCTRLST_PAD_ENA 0x0020
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#define regCTRLST_BASE (regCTRLST_PAD_ENA|regCTRLST_PRM_ENA)
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#define regRX_FLT 0x1400
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/* TXD TXF RXF RXD CONFIG 0x0000 --- 0x007c*/
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#define TX_RX_CFG1_BASE 0xffffffff /*0-31 */
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#define TX_RX_CFG0_BASE 0xfffff000 /*31:12 */
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#define TX_RX_CFG0_RSVD 0x0ffc /*11:2 */
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#define TX_RX_CFG0_SIZE 0x0003 /*1:0 */
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/* TXD TXF RXF RXD WRITE 0x0080 --- 0x00BC */
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#define TXF_WPTR_WR_PTR 0x7ff8 /*14:3 */
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/* TXD TXF RXF RXD READ 0x00CO --- 0x00FC */
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#define TXF_RPTR_RD_PTR 0x7ff8 /*14:3 */
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#define TXF_WPTR_MASK 0x7ff0 /* last 4 bits are dropped
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* size is rounded to 16 */
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/* regISR 0x0100 */
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/* regIMR 0x0110 */
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#define IMR_INPROG 0x80000000 /*31 */
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#define IR_LNKCHG1 0x10000000 /*28 */
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#define IR_LNKCHG0 0x08000000 /*27 */
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#define IR_GPIO 0x04000000 /*26 */
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#define IR_RFRSH 0x02000000 /*25 */
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#define IR_RSVD 0x01000000 /*24 */
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#define IR_SWI 0x00800000 /*23 */
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#define IR_RX_FREE_3 0x00400000 /*22 */
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#define IR_RX_FREE_2 0x00200000 /*21 */
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#define IR_RX_FREE_1 0x00100000 /*20 */
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#define IR_RX_FREE_0 0x00080000 /*19 */
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#define IR_TX_FREE_3 0x00040000 /*18 */
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#define IR_TX_FREE_2 0x00020000 /*17 */
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#define IR_TX_FREE_1 0x00010000 /*16 */
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#define IR_TX_FREE_0 0x00008000 /*15 */
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#define IR_RX_DESC_3 0x00004000 /*14 */
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#define IR_RX_DESC_2 0x00002000 /*13 */
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#define IR_RX_DESC_1 0x00001000 /*12 */
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#define IR_RX_DESC_0 0x00000800 /*11 */
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#define IR_PSE 0x00000400 /*10 */
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#define IR_TMR3 0x00000200 /*9 */
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#define IR_TMR2 0x00000100 /*8 */
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#define IR_TMR1 0x00000080 /*7 */
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#define IR_TMR0 0x00000040 /*6 */
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#define IR_VNT 0x00000020 /*5 */
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#define IR_RxFL 0x00000010 /*4 */
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#define IR_SDPERR 0x00000008 /*3 */
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#define IR_TR 0x00000004 /*2 */
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#define IR_PCIE_LINK 0x00000002 /*1 */
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#define IR_PCIE_TOUT 0x00000001 /*0 */
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#define IR_EXTRA (IR_RX_FREE_0 | IR_LNKCHG0 | IR_PSE | \
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IR_TMR0 | IR_PCIE_LINK | IR_PCIE_TOUT)
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#define IR_RUN (IR_EXTRA | IR_RX_DESC_0 | IR_TX_FREE_0)
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#define IR_ALL 0xfdfffff7
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#define IR_LNKCHG0_ofst 27
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#define GMAC_RX_FILTER_OSEN 0x1000 /* shared OS enable */
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#define GMAC_RX_FILTER_TXFC 0x0400 /* Tx flow control */
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#define GMAC_RX_FILTER_RSV0 0x0200 /* reserved */
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#define GMAC_RX_FILTER_FDA 0x0100 /* filter out direct address */
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#define GMAC_RX_FILTER_AOF 0x0080 /* accept over run */
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#define GMAC_RX_FILTER_ACF 0x0040 /* accept control frames */
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#define GMAC_RX_FILTER_ARUNT 0x0020 /* accept under run */
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#define GMAC_RX_FILTER_ACRC 0x0010 /* accept crc error */
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#define GMAC_RX_FILTER_AM 0x0008 /* accept multicast */
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#define GMAC_RX_FILTER_AB 0x0004 /* accept broadcast */
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#define GMAC_RX_FILTER_PRM 0x0001 /* [0:1] promiscous mode */
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#define MAX_FRAME_AB_VAL 0x3fff /* 13:0 */
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#define CLKPLL_PLLLKD 0x0200 /*9 */
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#define CLKPLL_RSTEND 0x0100 /*8 */
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#define CLKPLL_SFTRST 0x0001 /*0 */
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#define CLKPLL_LKD (CLKPLL_PLLLKD|CLKPLL_RSTEND)
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/*
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* PCI-E Device Control Register (Offset 0x88)
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* Source: Luxor Data Sheet, 7.1.3.3.3
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*/
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#define PCI_DEV_CTRL_REG 0x88
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#define GET_DEV_CTRL_MAXPL(x) GET_BITS_SHIFT(x, 3, 5)
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#define GET_DEV_CTRL_MRRS(x) GET_BITS_SHIFT(x, 3, 12)
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/*
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* PCI-E Link Status Register (Offset 0x92)
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* Source: Luxor Data Sheet, 7.1.3.3.7
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*/
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#define PCI_LINK_STATUS_REG 0x92
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#define GET_LINK_STATUS_LANES(x) GET_BITS_SHIFT(x, 6, 4)
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/* Debugging Macros */
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#define DBG2(fmt, args...) \
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pr_err("%s:%-5d: " fmt, __func__, __LINE__, ## args)
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#define BDX_ASSERT(x) BUG_ON(x)
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#ifdef DEBUG
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#define ENTER \
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do { \
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pr_err("%s:%-5d: ENTER\n", __func__, __LINE__); \
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} while (0)
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#define RET(args...) \
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do { \
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pr_err("%s:%-5d: RETURN\n", __func__, __LINE__); \
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return args; \
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} while (0)
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#define DBG(fmt, args...) \
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pr_err("%s:%-5d: " fmt, __func__, __LINE__, ## args)
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#else
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#define ENTER do { } while (0)
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#define RET(args...) return args
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#define DBG(fmt, args...) \
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do { \
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if (0) \
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pr_err(fmt, ##args); \
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} while (0)
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#endif
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#endif /* _BDX__H */
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