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src/sys/dev/pci/if_nep.c

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/* $OpenBSD: if_nep.c,v 1.34 2022/03/11 18:00:48 mpi Exp $ */
/*
* Copyright (c) 2014, 2015 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/pool.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_media.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#if NBPFILTER > 0
#include <net/bpf.h>
#endif
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#ifdef __sparc64__
#include <dev/ofw/openfirm.h>
#endif
/*
* The virtualization features make this a really complex device. For
* now we try to keep things simple and use one logical device per
* port, using port numbers as logical device numbers.
*/
#define PIO 0x000000
#define FZC_PIO 0x080000
#define FZC_MAC 0x180000
#define FZC_IPP 0x280000
#define FFLP 0x300000
#define FZC_FFLP 0x380000
#define ZCP 0x500000
#define FZC_ZCP 0x580000
#define DMC 0x600000
#define FZC_DMC 0x680000
#define TXC 0x700000
#define FZC_TXC 0x780000
#define PIO_LDSV 0x800000
#define PIO_IMASK0 0xa00000
#define PIO_IMASK1 0xb00000
#define RST_CTL (FZC_PIO + 0x00038)
#define SYS_ERR_MASK (FZC_PIO + 0x00090)
#define SYS_ERR_STAT (FZC_PIO + 0x00098)
#define LDN_RXDMA(chan) (0 + (chan))
#define LDN_TXDMA(chan) (32 + (chan))
#define LDN_MIF 63
#define LDN_MAC(port) (64 + (port))
#define LDN_SYSERR 68
#define LDSV0(ldg) (PIO_LDSV + 0x00000 + (ldg) * 0x02000)
#define LDSV1(ldg) (PIO_LDSV + 0x00008 + (ldg) * 0x02000)
#define LDSV2(ldg) (PIO_LDSV + 0x00010 + (ldg) * 0x02000)
#define LDGIMGN(ldg) (PIO_LDSV + 0x00018 + (ldg) * 0x02000)
#define LDGIMGN_ARM (1ULL << 31)
#define LDGIMGN_TIMER (63ULL << 0)
#define LD_IM0(idx) (PIO_IMASK0 + 0x00000 + (idx) * 0x02000)
#define LD_IM0_LDF_MASK (3ULL << 0)
#define LD_IM1(idx) (PIO_IMASK1 + 0x00000 + (idx - 64) * 0x02000)
#define LD_IM1_LDF_MASK (3ULL << 0)
#define SID(ldg) (FZC_PIO + 0x10200 + (ldg) * 0x00008)
#define LDG_NUM(ldn) (FZC_PIO + 0x20000 + (ldn) * 0x00008)
#define ipp_port(port) (((port & 0x1) << 1) | (port & 0x2) >> 1)
#define IPP_CFIG(port) (FZC_IPP + 0x00000 + ipp_port(port) * 0x04000)
#define IPP_CFIG_SOFT_RST (1ULL << 31)
#define IPP_CFIG_DFIFO_PIO_W (1ULL << 5)
#define IPP_CFIG_IPP_ENABLE (1ULL << 0)
#define IPP_INT_STAT(port) (FZC_IPP + 0x00040 + ipp_port(port) * 0x04000)
#define IPP_MSK(port) (FZC_IPP + 0x00048 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_RD1(port) (FZC_IPP + 0x000c0 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_RD2(port) (FZC_IPP + 0x000c8 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_RD3(port) (FZC_IPP + 0x000d0 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_RD4(port) (FZC_IPP + 0x000d8 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_RD5(port) (FZC_IPP + 0x000e0 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_WR1(port) (FZC_IPP + 0x000e8 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_WR2(port) (FZC_IPP + 0x000f0 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_WR3(port) (FZC_IPP + 0x000f8 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_WR4(port) (FZC_IPP + 0x00100 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_WR5(port) (FZC_IPP + 0x00108 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_RD_PTR(port) (FZC_IPP + 0x00110 + ipp_port(port) * 0x04000)
#define IPP_DFIFO_WR_PTR(port) (FZC_IPP + 0x00118 + ipp_port(port) * 0x04000)
#define IPP_NIU_DFIFO_ENTRIES 1024
#define IPP_P0_P1_DFIFO_ENTRIES 2048
#define IPP_P2_P3_DFIFO_ENTRIES 1024
#define ZCP_CFIG (FZC_ZCP + 0x00000)
#define ZCP_INT_STAT (FZC_ZCP + 0x00008)
#define ZCP_INT_MASK (FZC_ZCP + 0x00010)
#define TXC_DMA_MAX(chan) (FZC_TXC + 0x00000 + (chan) * 0x01000)
#define TXC_CONTROL (FZC_TXC + 0x20000)
#define TXC_CONTROL_TXC_ENABLED (1ULL << 4)
#define TXC_PORT_DMA(port) (FZC_TXC + 0x20028 + (port) * 0x00100)
#define TXC_PKT_STUFFED(port) (FZC_TXC + 0x20030 + (port) * 0x00100)
#define TXC_PKT_XMIT(port) (FZC_TXC + 0x20038 + (port) * 0x00100)
#define TXC_INT_STAT_DBG (FZC_TXC + 0x20420)
#define TXC_INT_STAT (FZC_TXC + 0x20428)
#define TXC_INT_MASK (FZC_TXC + 0x20430)
#define TXC_INT_MASK_PORT_INT_MASK(port) (0x3fULL << ((port) * 8))
#define XTXMAC_SW_RST(port) (FZC_MAC + 0x00000 + (port) * 0x06000)
#define XTXMAC_SW_RST_REG_RST (1ULL << 1)
#define XTXMAC_SW_RST_SOFT_RST (1ULL << 0)
#define XRXMAC_SW_RST(port) (FZC_MAC + 0x00008 + (port) * 0x06000)
#define XRXMAC_SW_RST_REG_RST (1ULL << 1)
#define XRXMAC_SW_RST_SOFT_RST (1ULL << 0)
#define XTXMAC_STATUS(port) (FZC_MAC + 0x00020 + (port) * 0x06000)
#define XRXMAC_STATUS(port) (FZC_MAC + 0x00028 + (port) * 0x06000)
#define XTXMAC_STAT_MSK(port) (FZC_MAC + 0x00040 + (port) * 0x06000)
#define XRXMAC_STAT_MSK(port) (FZC_MAC + 0x00048 + (port) * 0x06000)
#define XMAC_CONFIG(port) (FZC_MAC + 0x00060 + (port) * 0x06000)
#define XMAC_CONFIG_SEL_CLK_25MHZ (1ULL << 31)
#define XMAC_CONFIG_1G_PCS_BYPASS (1ULL << 30)
#define XMAC_CONFIG_MODE_MASK (3ULL << 27)
#define XMAC_CONFIG_MODE_XGMII (0ULL << 27)
#define XMAC_CONFIG_MODE_GMII (1ULL << 27)
#define XMAC_CONFIG_MODE_MII (2ULL << 27)
#define XMAC_CONFIG_LFS_DISABLE (1ULL << 26)
#define XMAC_CONFIG_LOOPBACK (1ULL << 25)
#define XMAC_CONFIG_TX_OUTPUT_EN (1ULL << 24)
#define XMAC_CONFIG_SEL_POR_CLK_SRC (1ULL << 23)
#define XMAC_CONFIG_HASH_FILTER_EN (1ULL << 15)
#define XMAC_CONFIG_PROMISCUOUS_GROUP (1ULL << 10)
#define XMAC_CONFIG_PROMISCUOUS (1ULL << 9)
#define XMAC_CONFIG_RX_MAC_ENABLE (1ULL << 8)
#define XMAC_CONFIG_ALWAYS_NO_CRC (1ULL << 3)
#define XMAC_CONFIG_VAR_MIN_IPG_EN (1ULL << 2)
#define XMAC_CONFIG_STRETCH_MODE (1ULL << 1)
#define XMAC_CONFIG_TX_ENABLE (1ULL << 0)
#define XMAC_IPG(port) (FZC_MAC + 0x00080 + (port) * 0x06000)
#define XMAC_IPG_IPG_VALUE1_MASK (0xffULL << 8)
#define XMAC_IPG_IPG_VALUE1_12 (10ULL << 8)
#define XMAC_IPG_IPG_VALUE_MASK (0x07ULL << 0)
#define XMAC_IPG_IPG_VALUE_12_15 (3ULL << 0)
#define XMAC_MIN(port) (FZC_MAC + 0x00088 + (port) * 0x06000)
#define XMAC_MIN_RX_MIN_PKT_SIZE_MASK (0x3ffULL << 20)
#define XMAC_MIN_RX_MIN_PKT_SIZE_SHIFT 20
#define XMAC_MIN_TX_MIN_PKT_SIZE_MASK (0x3ffULL << 0)
#define XMAC_MIN_TX_MIN_PKT_SIZE_SHIFT 0
#define XMAC_MAX(port) (FZC_MAC + 0x00090 + (port) * 0x06000)
#define XMAC_ADDR0(port) (FZC_MAC + 0x000a0 + (port) * 0x06000)
#define XMAC_ADDR1(port) (FZC_MAC + 0x000a8 + (port) * 0x06000)
#define XMAC_ADDR2(port) (FZC_MAC + 0x000b0 + (port) * 0x06000)
#define XMAC_ADDR_CMPEN(port) (FZC_MAC + 0x00208 + (port) * 0x06000)
#define XMAC_ADD_FILT0(port) (FZC_MAC + 0x00818 + (port) * 0x06000)
#define XMAC_ADD_FILT1(port) (FZC_MAC + 0x00820 + (port) * 0x06000)
#define XMAC_ADD_FILT2(port) (FZC_MAC + 0x00828 + (port) * 0x06000)
#define XMAC_ADD_FILT12_MASK(port) (FZC_MAC + 0x00830 + (port) * 0x06000)
#define XMAC_ADD_FILT00_MASK(port) (FZC_MAC + 0x00838 + (port) * 0x06000)
#define XMAC_HASH_TBL0(port) (FZC_MAC + 0x00840 + (port) * 0x06000)
#define XMAC_HASH_TBL(port, i) (XMAC_HASH_TBL0(port) + (i) * 0x00008)
#define XMAC_HOST_INFO0(port) (FZC_MAC + 0x00900 + (port) * 0x06000)
#define XMAC_HOST_INFO(port, i) (XMAC_HOST_INFO0(port) + (i) * 0x00008)
#define RXMAC_BT_CNT(port) (FZC_MAC + 0x00100 + (port) * 0x06000)
#define TXMAC_FRM_CNT(port) (FZC_MAC + 0x00170 + (port) * 0x06000)
#define TXMAC_BYTE_CNT(port) (FZC_MAC + 0x00178 + (port) * 0x06000)
#define LINK_FAULT_CNT(port) (FZC_MAC + 0x00180 + (port) * 0x06000)
#define XMAC_SM_REG(port) (FZC_MAC + 0x001a8 + (port) * 0x06000)
#define TXMAC_SW_RST(port) (FZC_MAC + 0x0c000 + ((port) - 2) * 0x04000)
#define TXMAC_SW_RST_SW_RST (1ULL << 0)
#define RXMAC_SW_RST(port) (FZC_MAC + 0x0c008 + ((port) - 2) * 0x04000)
#define RXMAC_SW_RST_SW_RST (1ULL << 0)
#define TXMAC_CONFIG(port) (FZC_MAC + 0x0c060 + ((port) - 2) * 0x04000)
#define TXMAC_CONFIG_TX_ENABLE (1ULL << 0)
#define RXMAC_CONFIG(port) (FZC_MAC + 0x0c068 + ((port) - 2) * 0x04000)
#define RXMAC_CONFIG_ERROR_CHK_DIS (1ULL << 7)
#define RXMAC_CONFIG_ADDR_FILTER_EN (1ULL << 6)
#define RXMAC_CONFIG_HASH_FILTER_EN (1ULL << 5)
#define RXMAC_CONFIG_PROMISCUOUS_GROUP (1ULL << 4)
#define RXMAC_CONFIG_PROMISCUOUS (1ULL << 3)
#define RXMAC_CONFIG_STRIP_FCS (1ULL << 2)
#define RXMAC_CONFIG_STRIP_PAD (1ULL << 1)
#define RXMAC_CONFIG_RX_ENABLE (1ULL << 0)
#define MAC_XIF_CONFIG(port) (FZC_MAC + 0x0c078 + ((port) - 2) * 0x04000)
#define MAC_XIF_CONFIG_SEL_CLK_25MHZ (1ULL << 7)
#define MAC_XIF_CONFIG_GMII_MODE (1ULL << 3)
#define MAC_XIF_CONFIG_LOOPBACK (1ULL << 1)
#define MAC_XIF_CONFIG_TX_OUTPUT_EN (1ULL << 0)
#define BMAC_MIN(port) (FZC_MAC + 0x0c0a0 + ((port) - 2) * 0x04000)
#define BMAC_MAX(port) (FZC_MAC + 0x0c0a8 + ((port) - 2) * 0x04000)
#define BMAC_MAX_BURST_SHIFT 16
#define MAC_PA_SIZE(port) (FZC_MAC + 0x0c0b0 + ((port) - 2) * 0x04000)
#define MAC_CTRL_TYPE(port) (FZC_MAC + 0x0c0b8 + ((port) - 2) * 0x04000)
#define BMAC_ADDR0(port) (FZC_MAC + 0x0c100 + ((port) - 2) * 0x04000)
#define BMAC_ADDR1(port) (FZC_MAC + 0x0c108 + ((port) - 2) * 0x04000)
#define BMAC_ADDR2(port) (FZC_MAC + 0x0c110 + ((port) - 2) * 0x04000)
#define MAC_ADDR_FILT0(port) (FZC_MAC + 0x0c298 + ((port) - 2) * 0x04000)
#define MAC_ADDR_FILT1(port) (FZC_MAC + 0x0c2a0 + ((port) - 2) * 0x04000)
#define MAC_ADDR_FILT2(port) (FZC_MAC + 0x0c2a8 + ((port) - 2) * 0x04000)
#define MAC_ADDR_FILT12_MASK(port) (FZC_MAC + 0x0c2b0 + ((port) - 2) * 0x04000)
#define MAC_ADDR_FILT00_MASK(port) (FZC_MAC + 0x0c2b8 + ((port) - 2) * 0x04000)
#define MAC_HASH_TBL0(port) (FZC_MAC + 0x0c2c0 + ((port) - 2) * 0x04000)
#define MAC_HASH_TBL(port, i) (MAC_HASH_TBL0(port) + (i) * 0x00008)
#define RXMAC_FRM_CNT(port) (FZC_MAC + 0x0c370 + ((port) - 2) * 0x04000)
#define BMAC_ALTAD_CMPEN(port) (FZC_MAC + 0x0c3f8 + ((port) - 2) * 0x04000)
#define BMAC_HOST_INFO0(port) (FZC_MAC + 0x0c400 + ((port) - 2) * 0x04000)
#define BMAC_HOST_INFO(port, i) (BMAC_HOST_INFO0(port) + (i) * 0x00008)
#define PCS_PORT_OFFSET(port) ((port < 2) ? ((port) * 0x06000) : \
(0x02000 + (port) * 0x4000))
#define PCS_MII_CTL(port) (FZC_MAC + 0x04000 + PCS_PORT_OFFSET(port))
#define PCS_MII_CTL_RESET (1ULL << 15)
#define PCS_DPATH_MODE(port) (FZC_MAC + 0x040a0 + PCS_PORT_OFFSET(port))
#define PCS_DPATH_MODE_MII (1ULL << 1)
#define MIF_FRAME_OUTPUT (FZC_MAC + 0x16018)
#define MIF_FRAME_DATA 0xffff
#define MIF_FRAME_TA0 (1ULL << 16)
#define MIF_FRAME_TA1 (1ULL << 17)
#define MIF_FRAME_REG_SHIFT 18
#define MIF_FRAME_PHY_SHIFT 23
#define MIF_FRAME_READ 0x60020000
#define MIF_FRAME_WRITE 0x50020000
#define MIF_CONFIG (FZC_MAC + 0x16020)
#define MIF_CONFIG_INDIRECT_MODE (1ULL << 15)
#define DEF_PT0_RDC (FZC_DMC + 0x00008)
#define DEF_PT_RDC(port) (DEF_PT0_RDC + (port) * 0x00008)
#define RDC_TBL(tbl, i) (FZC_ZCP + 0x10000 + (tbl * 16 + i) * 0x00008)
#define RX_LOG_PAGE_VLD(chan) (FZC_DMC + 0x20000 + (chan) * 0x00040)
#define RX_LOG_PAGE_VLD_PAGE0 (1ULL << 0)
#define RX_LOG_PAGE_VLD_PAGE1 (1ULL << 1)
#define RX_LOG_PAGE_VLD_FUNC_SHIFT 2
#define RX_LOG_MASK1(chan) (FZC_DMC + 0x20008 + (chan) * 0x00040)
#define RX_LOG_VALUE1(chan) (FZC_DMC + 0x20010 + (chan) * 0x00040)
#define RX_LOG_MASK2(chan) (FZC_DMC + 0x20018 + (chan) * 0x00040)
#define RX_LOG_VALUE2(chan) (FZC_DMC + 0x20020 + (chan) * 0x00040)
#define RX_LOG_PAGE_RELO1(chan) (FZC_DMC + 0x20028 + (chan) * 0x00040)
#define RX_LOG_PAGE_RELO2(chan) (FZC_DMC + 0x20030 + (chan) * 0x00040)
#define RX_LOG_PAGE_HDL(chan) (FZC_DMC + 0x20038 + (chan) * 0x00040)
#define RXDMA_CFIG1(chan) (DMC + 0x00000 + (chan) * 0x00200)
#define RXDMA_CFIG1_EN (1ULL << 31)
#define RXDMA_CFIG1_RST (1ULL << 30)
#define RXDMA_CFIG1_QST (1ULL << 29)
#define RXDMA_CFIG2(chan) (DMC + 0x00008 + (chan) * 0x00200)
#define RXDMA_CFIG2_OFFSET_MASK (3ULL << 2)
#define RXDMA_CFIG2_OFFSET_0 (0ULL << 2)
#define RXDMA_CFIG2_OFFSET_64 (1ULL << 2)
#define RXDMA_CFIG2_OFFSET_128 (2ULL << 2)
#define RXDMA_CFIG2_FULL_HDR (1ULL << 0)
#define RBR_CFIG_A(chan) (DMC + 0x00010 + (chan) * 0x00200)
#define RBR_CFIG_A_LEN_SHIFT 48
#define RBR_CFIG_B(chan) (DMC + 0x00018 + (chan) * 0x00200)
#define RBR_CFIG_B_BLKSIZE_MASK (3ULL << 24)
#define RBR_CFIG_B_BLKSIZE_4K (0ULL << 24)
#define RBR_CFIG_B_BLKSIZE_8K (1ULL << 24)
#define RBR_CFIG_B_BLKSIZE_16K (2ULL << 24)
#define RBR_CFIG_B_BLKSIZE_32K (3ULL << 24)
#define RBR_CFIG_B_VLD2 (1ULL << 23)
#define RBR_CFIG_B_BUFSZ2_MASK (3ULL << 16)
#define RBR_CFIG_B_BUFSZ2_2K (0ULL << 16)
#define RBR_CFIG_B_BUFSZ2_4K (1ULL << 16)
#define RBR_CFIG_B_BUFSZ2_8K (2ULL << 16)
#define RBR_CFIG_B_BUFSZ2_16K (3ULL << 16)
#define RBR_CFIG_B_VLD1 (1ULL << 15)
#define RBR_CFIG_B_BUFSZ1_MASK (3ULL << 8)
#define RBR_CFIG_B_BUFSZ1_1K (0ULL << 8)
#define RBR_CFIG_B_BUFSZ1_2K (1ULL << 8)
#define RBR_CFIG_B_BUFSZ1_4K (2ULL << 8)
#define RBR_CFIG_B_BUFSZ1_8K (3ULL << 8)
#define RBR_CFIG_B_VLD0 (1ULL << 7)
#define RBR_CFIG_B_BUFSZ0_MASK (3ULL << 0)
#define RBR_CFIG_B_BUFSZ0_256 (0ULL << 0)
#define RBR_CFIG_B_BUFSZ0_512 (1ULL << 0)
#define RBR_CFIG_B_BUFSZ0_1K (2ULL << 0)
#define RBR_CFIG_B_BUFSZ0_2K (3ULL << 0)
#define RBR_KICK(chan) (DMC + 0x00020 + (chan) * 0x00200)
#define RBR_STAT(chan) (DMC + 0x00028 + (chan) * 0x00200)
#define RBR_HDH(chan) (DMC + 0x00030 + (chan) * 0x00200)
#define RBR_HDL(chan) (DMC + 0x00038 + (chan) * 0x00200)
#define RCRCFIG_A(chan) (DMC + 0x00040 + (chan) * 0x00200)
#define RCRCFIG_A_LEN_SHIFT 48
#define RCRCFIG_B(chan) (DMC + 0x00048 + (chan) * 0x00200)
#define RCRCFIG_B_PTHRES_SHIFT 16
#define RCRCFIG_B_ENTOUT (1ULL << 15)
#define RCRSTAT_A(chan) (DMC + 0x00050 + (chan) * 0x00200)
#define RCRSTAT_B(chan) (DMC + 0x00058 + (chan) * 0x00200)
#define RCRSTAT_C(chan) (DMC + 0x00060 + (chan) * 0x00200)
#define RX_DMA_ENT_MSK(chan) (DMC + 0x00068 + (chan) * 0x00200)
#define RX_DMA_ENT_MSK_RBR_EMPTY (1ULL << 3)
#define RX_DMA_CTL_STAT(chan) (DMC + 0x00070 + (chan) * 0x00200)
#define RX_DMA_CTL_STAT_MEX (1ULL << 47)
#define RX_DMA_CTL_STAT_RCRTHRES (1ULL << 46)
#define RX_DMA_CTL_STAT_RCRTO (1ULL << 45)
#define RX_DMA_CTL_STAT_RBR_EMPTY (1ULL << 35)
#define RX_DMA_CTL_STAT_PTRREAD_SHIFT 16
#define RX_DMA_CTL_STAT_DBG(chan) (DMC + 0x00098 + (chan) * 0x00200)
#define TX_LOG_PAGE_VLD(chan) (FZC_DMC + 0x40000 + (chan) * 0x00200)
#define TX_LOG_PAGE_VLD_PAGE0 (1ULL << 0)
#define TX_LOG_PAGE_VLD_PAGE1 (1ULL << 1)
#define TX_LOG_PAGE_VLD_FUNC_SHIFT 2
#define TX_LOG_MASK1(chan) (FZC_DMC + 0x40008 + (chan) * 0x00200)
#define TX_LOG_VALUE1(chan) (FZC_DMC + 0x40010 + (chan) * 0x00200)
#define TX_LOG_MASK2(chan) (FZC_DMC + 0x40018 + (chan) * 0x00200)
#define TX_LOG_VALUE2(chan) (FZC_DMC + 0x40020 + (chan) * 0x00200)
#define TX_LOG_PAGE_RELO1(chan) (FZC_DMC + 0x40028 + (chan) * 0x00200)
#define TX_LOG_PAGE_RELO2(chan) (FZC_DMC + 0x40030 + (chan) * 0x00200)
#define TX_LOG_PAGE_HDL(chan) (FZC_DMC + 0x40038 + (chan) * 0x00200)
#define TX_RNG_CFIG(chan) (DMC + 0x40000 + (chan) * 0x00200)
#define TX_RNG_CFIG_LEN_SHIFT 48
#define TX_RING_HDL(chan) (DMC + 0x40010 + (chan) * 0x00200)
#define TX_RING_KICK(chan) (DMC + 0x40018 + (chan) * 0x00200)
#define TX_RING_KICK_WRAP (1ULL << 19)
#define TX_ENT_MSK(chan) (DMC + 0x40020 + (chan) * 0x00200)
#define TX_CS(chan) (DMC + 0x40028 + (chan) * 0x00200)
#define TX_CS_PKT_CNT_MASK (0xfffULL << 48)
#define TX_CS_PKT_CNT_SHIFT 48
#define TX_CS_RST (1ULL << 31)
#define TX_CS_STOP_N_GO (1ULL << 28)
#define TX_CS_SNG_STATE (1ULL << 27)
#define TDMC_INTR_DBG(chan) (DMC + 0x40060 + (chan) * 0x00200)
#define TXDMA_MBH(chan) (DMC + 0x40030 + (chan) * 0x00200)
#define TXDMA_MBL(chan) (DMC + 0x40038 + (chan) * 0x00200)
#define TX_RNG_ERR_LOGH(chan) (DMC + 0x40048 + (chan) * 0x00200)
#define TX_RNG_ERR_LOGL(chan) (DMC + 0x40050 + (chan) * 0x00200)
#define RXD_MULTI (1ULL << 63)
#define RXD_L2_LEN_MASK (0x3fffULL << 40)
#define RXD_L2_LEN_SHIFT 40
#define RXD_PKT_BUF_ADDR_MASK 0x3fffffffffULL
#define RXD_PKT_BUF_ADDR_SHIFT 6
struct nep_block {
bus_dmamap_t nb_map;
void *nb_block;
};
#define NEP_NRBDESC 256
#define NEP_NRCDESC 512
#define TXD_SOP (1ULL << 63)
#define TXD_MARK (1ULL << 62)
#define TXD_NUM_PTR_SHIFT 58
#define TXD_TR_LEN_SHIFT 44
struct nep_txbuf_hdr {
uint64_t nh_flags;
uint64_t nh_reserved;
};
struct nep_buf {
bus_dmamap_t nb_map;
struct mbuf *nb_m;
};
#define NEP_NTXDESC 256
#define NEP_NTXSEGS 15
struct nep_dmamem {
bus_dmamap_t ndm_map;
bus_dma_segment_t ndm_seg;
size_t ndm_size;
caddr_t ndm_kva;
};
#define NEP_DMA_MAP(_ndm) ((_ndm)->ndm_map)
#define NEP_DMA_LEN(_ndm) ((_ndm)->ndm_size)
#define NEP_DMA_DVA(_ndm) ((_ndm)->ndm_map->dm_segs[0].ds_addr)
#define NEP_DMA_KVA(_ndm) ((void *)(_ndm)->ndm_kva);
struct pool *nep_block_pool;
struct nep_softc {
struct device sc_dev;
struct arpcom sc_ac;
#define sc_lladdr sc_ac.ac_enaddr
struct mii_data sc_mii;
#define sc_media sc_mii.mii_media
bus_dma_tag_t sc_dmat;
bus_space_tag_t sc_memt;
bus_space_handle_t sc_memh;
bus_size_t sc_mems;
void *sc_ih;
int sc_port;
struct nep_dmamem *sc_txring;
struct nep_buf *sc_txbuf;
uint64_t *sc_txdesc;
int sc_tx_prod;
int sc_tx_cnt;
int sc_tx_cons;
uint64_t sc_wrap;
uint16_t sc_pkt_cnt;
struct nep_dmamem *sc_rbring;
struct nep_block *sc_rb;
uint32_t *sc_rbdesc;
struct if_rxring sc_rx_ring;
int sc_rx_prod;
struct nep_dmamem *sc_rcring;
uint64_t *sc_rcdesc;
int sc_rx_cons;
struct nep_dmamem *sc_rxmbox;
struct timeout sc_tick;
};
int nep_match(struct device *, void *, void *);
void nep_attach(struct device *, struct device *, void *);
const struct cfattach nep_ca = {
sizeof(struct nep_softc), nep_match, nep_attach
};
struct cfdriver nep_cd = {
NULL, "nep", DV_DULL
};
static u_int nep_mextfree_idx;
int nep_pci_enaddr(struct nep_softc *, struct pci_attach_args *);
uint64_t nep_read(struct nep_softc *, uint32_t);
void nep_write(struct nep_softc *, uint32_t, uint64_t);
int nep_mii_readreg(struct device *, int, int);
void nep_mii_writereg(struct device *, int, int, int);
void nep_mii_statchg(struct device *);
void nep_xmac_mii_statchg(struct nep_softc *);
void nep_bmac_mii_statchg(struct nep_softc *);
int nep_media_change(struct ifnet *);
void nep_media_status(struct ifnet *, struct ifmediareq *);
int nep_intr(void *);
void nep_rx_proc(struct nep_softc *);
void nep_extfree(caddr_t, u_int, void *);
void nep_tx_proc(struct nep_softc *);
void nep_init_ipp(struct nep_softc *);
void nep_ipp_clear_dfifo(struct nep_softc *, uint64_t);
void nep_init_rx_mac(struct nep_softc *);
void nep_init_rx_xmac(struct nep_softc *);
void nep_init_rx_bmac(struct nep_softc *);
void nep_init_rx_channel(struct nep_softc *, int);
void nep_init_tx_mac(struct nep_softc *);
void nep_init_tx_xmac(struct nep_softc *);
void nep_init_tx_bmac(struct nep_softc *);
void nep_init_tx_channel(struct nep_softc *, int);
void nep_enable_rx_mac(struct nep_softc *);
void nep_disable_rx_mac(struct nep_softc *);
void nep_stop_dma(struct nep_softc *);
void nep_fill_rx_ring(struct nep_softc *);
void nep_up(struct nep_softc *);
void nep_down(struct nep_softc *);
void nep_iff(struct nep_softc *);
int nep_encap(struct nep_softc *, struct mbuf **, int *);
void nep_start(struct ifnet *);
void nep_watchdog(struct ifnet *);
void nep_tick(void *);
int nep_ioctl(struct ifnet *, u_long, caddr_t);
struct nep_dmamem *nep_dmamem_alloc(struct nep_softc *, size_t);
void nep_dmamem_free(struct nep_softc *, struct nep_dmamem *);
/*
* SUNW,pcie-neptune: 4x1G onboard on T5140/T5240
* SUNW,pcie-qgc: 4x1G, "Sun Quad GbE UTP x8 PCI Express Card"
* SUNW,pcie-qgc-pem: 4x1G, "Sun Quad GbE UTP x8 PCIe ExpressModule"
* SUNW,pcie-2xgf: 2x10G, "Sun Dual 10GbE XFP PCI Express Card"
* SUNW,pcie-2xgf-pem: 2x10G, "Sun Dual 10GbE XFP PCIe ExpressModule"
*/
int
nep_match(struct device *parent, void *match, void *aux)
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_NEPTUNE)
return (1);
return (0);
}
void
nep_attach(struct device *parent, struct device *self, void *aux)
{
struct nep_softc *sc = (struct nep_softc *)self;
struct pci_attach_args *pa = aux;
pci_intr_handle_t ih;
const char *intrstr = NULL;
struct ifnet *ifp = &sc->sc_ac.ac_if;
struct mii_data *mii = &sc->sc_mii;
pcireg_t memtype;
uint64_t val;
if (nep_mextfree_idx == 0)
nep_mextfree_idx = mextfree_register(nep_extfree);
sc->sc_dmat = pa->pa_dmat;
memtype = PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT;
if (pci_mapreg_map(pa, PCI_MAPREG_START, memtype, 0,
&sc->sc_memt, &sc->sc_memh, NULL, &sc->sc_mems, 0)) {
printf(": can't map registers\n");
return;
}
if (pci_intr_map_msi(pa, &ih) && pci_intr_map(pa, &ih)) {
printf(": can't map interrupt\n");
bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_mems);
return;
}
intrstr = pci_intr_string(pa->pa_pc, ih);
sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET,
nep_intr, sc, self->dv_xname);
if (sc->sc_ih == NULL) {
printf(": can't establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_mems);
return;
}
printf(": %s", intrstr);
sc->sc_port = pa->pa_function;
nep_write(sc, SID(sc->sc_port), pa->pa_function << 5);
nep_write(sc, LDG_NUM(LDN_RXDMA(sc->sc_port)), sc->sc_port);
nep_write(sc, LDG_NUM(LDN_TXDMA(sc->sc_port)), sc->sc_port);
nep_write(sc, LDG_NUM(LDN_MAC(sc->sc_port)), sc->sc_port);
/* Port 0 gets the MIF and error interrupts. */
if (sc->sc_port == 0) {
nep_write(sc, LDG_NUM(LDN_MIF), sc->sc_port);
nep_write(sc, LDG_NUM(LDN_SYSERR), sc->sc_port);
nep_write(sc, ZCP_INT_MASK, 0);
}
#ifdef __sparc64__
if (OF_getprop(PCITAG_NODE(pa->pa_tag), "local-mac-address",
sc->sc_lladdr, ETHER_ADDR_LEN) <= 0)
#endif
nep_pci_enaddr(sc, pa);
printf(", address %s\n", ether_sprintf(sc->sc_lladdr));
if (nep_block_pool == NULL) {
nep_block_pool = malloc(sizeof(*nep_block_pool),
M_DEVBUF, M_WAITOK);
if (nep_block_pool == NULL) {
printf("%s: unable to allocate block pool\n",
sc->sc_dev.dv_xname);
return;
}
pool_init(nep_block_pool, PAGE_SIZE, 0, IPL_NET, 0,
"nepblk", NULL);
}
val = nep_read(sc, MIF_CONFIG);
val &= ~MIF_CONFIG_INDIRECT_MODE;
nep_write(sc, MIF_CONFIG, val);
strlcpy(ifp->if_xname, sc->sc_dev.dv_xname, sizeof(ifp->if_xname));
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = nep_ioctl;
ifp->if_start = nep_start;
ifp->if_watchdog = nep_watchdog;
mii->mii_ifp = ifp;
mii->mii_readreg = nep_mii_readreg;
mii->mii_writereg = nep_mii_writereg;
mii->mii_statchg = nep_mii_statchg;
ifmedia_init(&sc->sc_media, 0, nep_media_change, nep_media_status);
/*
* The PHYs are wired up in reverse order on the 4x1G (RGMII)
* configuration.
*/
mii_attach(&sc->sc_dev, mii, 0xffffffff, MII_PHY_ANY,
sc->sc_port ^ 0x3, 0);
if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) {
printf("%s: no PHY found!\n", sc->sc_dev.dv_xname);
ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL);
ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL);
} else
ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_AUTO);
if_attach(ifp);
ether_ifattach(ifp);
timeout_set(&sc->sc_tick, nep_tick, sc);
/* Enable the MIF and error interrupts. */
if (sc->sc_port == 0) {
nep_write(sc, LD_IM0(LDN_MIF), 0);
nep_write(sc, LD_IM1(LDN_SYSERR), 0);
}
}
#define PROMHDR_PTR_DATA 0x18
#define PROMDATA_PTR_VPD 0x08
#define PROMDATA_LEN 0x10
#define PROMDATA_TYPE 0x14
static const uint8_t nep_promhdr[] = { 0x55, 0xaa };
static const uint8_t nep_promdat[] = {
'P', 'C', 'I', 'R',
PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8,
PCI_PRODUCT_SUN_NEPTUNE & 0xff, PCI_PRODUCT_SUN_NEPTUNE >> 8
};
int
nep_pci_enaddr(struct nep_softc *sc, struct pci_attach_args *pa)
{
struct pci_vpd_largeres *res;
struct pci_vpd *vpd;
bus_space_handle_t romh;
bus_space_tag_t romt;
bus_size_t romsize = 0;
u_int8_t buf[32], *desc;
pcireg_t address;
int dataoff, vpdoff, len;
int off = 0;
int rv = -1;
if (pci_mapreg_map(pa, PCI_ROM_REG, PCI_MAPREG_TYPE_MEM, 0,
&romt, &romh, 0, &romsize, 0))
return (-1);
address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG);
address |= PCI_ROM_ENABLE;
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG, address);
while (off < romsize) {
bus_space_read_region_1(romt, romh, off, buf, sizeof(buf));
if (memcmp(buf, nep_promhdr, sizeof(nep_promhdr)))
goto fail;
dataoff =
buf[PROMHDR_PTR_DATA] | (buf[PROMHDR_PTR_DATA + 1] << 8);
if (dataoff < 0x1c)
goto fail;
dataoff += off;
bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf));
if (memcmp(buf, nep_promdat, sizeof(nep_promdat)))
goto fail;
if (buf[PROMDATA_TYPE] == 1)
break;
len = buf[PROMDATA_LEN] | (buf[PROMDATA_LEN + 1] << 8);
off += len * 512;
}
vpdoff = buf[PROMDATA_PTR_VPD] | (buf[PROMDATA_PTR_VPD + 1] << 8);
if (vpdoff < 0x1c)
goto fail;
vpdoff += off;
next:
bus_space_read_region_1(romt, romh, vpdoff, buf, sizeof(buf));
if (!PCI_VPDRES_ISLARGE(buf[0]))
goto fail;
res = (struct pci_vpd_largeres *)buf;
vpdoff += sizeof(*res);
len = ((res->vpdres_len_msb << 8) + res->vpdres_len_lsb);
switch(PCI_VPDRES_LARGE_NAME(res->vpdres_byte0)) {
case PCI_VPDRES_TYPE_IDENTIFIER_STRING:
/* Skip identifier string. */
vpdoff += len;
goto next;
case PCI_VPDRES_TYPE_VPD:
while (len > 0) {
bus_space_read_region_1(romt, romh, vpdoff,
buf, sizeof(buf));
vpd = (struct pci_vpd *)buf;
vpdoff += sizeof(*vpd) + vpd->vpd_len;
len -= sizeof(*vpd) + vpd->vpd_len;
/*
* We're looking for an "Enhanced" VPD...
*/
if (vpd->vpd_key0 != 'Z')
continue;
desc = buf + sizeof(*vpd);
/*
* ...which is an instance property...
*/
if (desc[0] != 'I')
continue;
desc += 3;
/*
* ...that's a byte array with the proper
* length for a MAC address...
*/
if (desc[0] != 'B' || desc[1] != ETHER_ADDR_LEN)
continue;
desc += 2;
/*
* ...named "local-mac-address".
*/
if (strcmp(desc, "local-mac-address") != 0)
continue;
desc += strlen("local-mac-address") + 1;
memcpy(sc->sc_ac.ac_enaddr, desc, ETHER_ADDR_LEN);
sc->sc_ac.ac_enaddr[5] += pa->pa_function;
rv = 0;
}
break;
default:
goto fail;
}
fail:
if (romsize != 0)
bus_space_unmap(romt, romh, romsize);
address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG);
address &= ~PCI_ROM_ENABLE;
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG, address);
return (rv);
}
uint64_t
nep_read(struct nep_softc *sc, uint32_t reg)
{
return (bus_space_read_8(sc->sc_memt, sc->sc_memh, reg));
}
void
nep_write(struct nep_softc *sc, uint32_t reg, uint64_t value)
{
bus_space_write_8(sc->sc_memt, sc->sc_memh, reg, value);
}
int
nep_mii_readreg(struct device *self, int phy, int reg)
{
struct nep_softc *sc = (struct nep_softc *)self;
uint64_t frame;
int n;
frame = MIF_FRAME_READ;
frame |= (reg << MIF_FRAME_REG_SHIFT) | (phy << MIF_FRAME_PHY_SHIFT);
nep_write(sc, MIF_FRAME_OUTPUT, frame);
for (n = 0; n < 1000; n++) {
delay(10);
frame = nep_read(sc, MIF_FRAME_OUTPUT);
if (frame & MIF_FRAME_TA0)
return (frame & MIF_FRAME_DATA);
}
printf("%s: %s timeout\n", sc->sc_dev.dv_xname, __func__);
return (0);
}
void
nep_mii_writereg(struct device *self, int phy, int reg, int val)
{
struct nep_softc *sc = (struct nep_softc *)self;
uint64_t frame;
int n;
frame = MIF_FRAME_WRITE;
frame |= (reg << MIF_FRAME_REG_SHIFT) | (phy << MIF_FRAME_PHY_SHIFT);
frame |= (val & MIF_FRAME_DATA);
nep_write(sc, MIF_FRAME_OUTPUT, frame);
for (n = 0; n < 1000; n++) {
delay(10);
frame = nep_read(sc, MIF_FRAME_OUTPUT);
if (frame & MIF_FRAME_TA0)
return;
}
printf("%s: %s timeout\n", sc->sc_dev.dv_xname, __func__);
return;
}
void
nep_mii_statchg(struct device *dev)
{
struct nep_softc *sc = (struct nep_softc *)dev;
if (sc->sc_port < 2)
nep_xmac_mii_statchg(sc);
else
nep_bmac_mii_statchg(sc);
}
void
nep_xmac_mii_statchg(struct nep_softc *sc)
{
struct mii_data *mii = &sc->sc_mii;
uint64_t val;
val = nep_read(sc, XMAC_CONFIG(sc->sc_port));
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX)
val |= XMAC_CONFIG_SEL_CLK_25MHZ;
else
val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
val |= XMAC_CONFIG_1G_PCS_BYPASS;
val &= ~XMAC_CONFIG_MODE_MASK;
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T ||
IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX)
val |= XMAC_CONFIG_MODE_GMII;
else
val |= XMAC_CONFIG_MODE_MII;
val |= XMAC_CONFIG_LFS_DISABLE;
if (mii->mii_media_active & IFM_LOOP)
val |= XMAC_CONFIG_LOOPBACK;
else
val &= ~XMAC_CONFIG_LOOPBACK;
val |= XMAC_CONFIG_TX_OUTPUT_EN;
nep_write(sc, XMAC_CONFIG(sc->sc_port), val);
}
void
nep_bmac_mii_statchg(struct nep_softc *sc)
{
struct mii_data *mii = &sc->sc_mii;
uint64_t val;
val = nep_read(sc, MAC_XIF_CONFIG(sc->sc_port));
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX)
val |= MAC_XIF_CONFIG_SEL_CLK_25MHZ;
else
val &= MAC_XIF_CONFIG_SEL_CLK_25MHZ;
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T ||
IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX)
val |= MAC_XIF_CONFIG_GMII_MODE;
else
val &= ~MAC_XIF_CONFIG_GMII_MODE;
if (mii->mii_media_active & IFM_LOOP)
val |= MAC_XIF_CONFIG_LOOPBACK;
else
val &= ~MAC_XIF_CONFIG_LOOPBACK;
val |= MAC_XIF_CONFIG_TX_OUTPUT_EN;
nep_write(sc, MAC_XIF_CONFIG(sc->sc_port), val);
}
int
nep_media_change(struct ifnet *ifp)
{
struct nep_softc *sc = ifp->if_softc;
if (LIST_FIRST(&sc->sc_mii.mii_phys))
mii_mediachg(&sc->sc_mii);
return (0);
}
void
nep_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct nep_softc *sc = ifp->if_softc;
if (LIST_FIRST(&sc->sc_mii.mii_phys)) {
mii_pollstat(&sc->sc_mii);
ifmr->ifm_active = sc->sc_mii.mii_media_active;
ifmr->ifm_status = sc->sc_mii.mii_media_status;
}
}
int
nep_intr(void *arg)
{
struct nep_softc *sc = arg;
uint64_t sv0, sv1, sv2;
int rearm = 0;
sv0 = nep_read(sc, LDSV0(sc->sc_port));
sv1 = nep_read(sc, LDSV1(sc->sc_port));
sv2 = nep_read(sc, LDSV2(sc->sc_port));
if ((sv0 | sv1 | sv2) == 0)
return (0);
if (sv0 & (1ULL << LDN_TXDMA(sc->sc_port))) {
nep_tx_proc(sc);
rearm = 1;
}
if (sv0 & (1ULL << LDN_RXDMA(sc->sc_port))) {
nep_rx_proc(sc);
rearm = 1;
}
if (rearm)
nep_write(sc, LDGIMGN(sc->sc_port), LDGIMGN_ARM | 2);
else
printf("%s: %s %llx %llx %llx\n", sc->sc_dev.dv_xname,
__func__, sv0, sv1, sv2);
return (1);
}
void
nep_rx_proc(struct nep_softc *sc)
{
struct ifnet *ifp = &sc->sc_ac.ac_if;
struct mbuf_list ml = MBUF_LIST_INITIALIZER();
uint64_t val;
uint16_t count;
uint16_t pktread = 0, ptrread = 0;
uint64_t rxd;
uint64_t addr;
bus_addr_t page;
bus_size_t off;
char *block;
struct mbuf *m;
int idx, len, i;
val = nep_read(sc, RX_DMA_CTL_STAT(sc->sc_port));
nep_write(sc, RX_DMA_CTL_STAT(sc->sc_port),
RX_DMA_CTL_STAT_RCRTHRES | RX_DMA_CTL_STAT_RCRTO);
bus_dmamap_sync(sc->sc_dmat, NEP_DMA_MAP(sc->sc_rcring), 0,
NEP_DMA_LEN(sc->sc_rcring), BUS_DMASYNC_POSTREAD);
count = nep_read(sc, RCRSTAT_A(sc->sc_port));
while (count > 0) {
idx = sc->sc_rx_cons;
KASSERT(idx < NEP_NRCDESC);
rxd = letoh64(sc->sc_rcdesc[idx]);
addr = (rxd & RXD_PKT_BUF_ADDR_MASK) << RXD_PKT_BUF_ADDR_SHIFT;
len = (rxd & RXD_L2_LEN_MASK) >> RXD_L2_LEN_SHIFT;
page = addr & ~PAGE_MASK;
off = addr & PAGE_MASK;
block = NULL;
for (i = 0; i < NEP_NRBDESC; i++) {
if (sc->sc_rb[i].nb_block &&
sc->sc_rb[i].nb_map->dm_segs[0].ds_addr == page) {
block = sc->sc_rb[i].nb_block;
break;
}
}
if (block == NULL) {
m = NULL;
} else {
bus_dmamap_unload(sc->sc_dmat, sc->sc_rb[i].nb_map);
sc->sc_rb[i].nb_block = NULL;
MGETHDR(m, M_DONTWAIT, MT_DATA);
}
if (m == NULL) {
ifp->if_ierrors++;
} else {
MEXTADD(m, block + off, PAGE_SIZE, M_EXTWR,
nep_mextfree_idx, block);
m->m_pkthdr.len = m->m_len = len;
m->m_data += ETHER_ALIGN;
ml_enqueue(&ml, m);
}
if_rxr_put(&sc->sc_rx_ring, 1);
if ((rxd & RXD_MULTI) == 0) {
count--;
pktread++;
}
ptrread++;
sc->sc_rx_cons++;
if (sc->sc_rx_cons >= NEP_NRCDESC)
sc->sc_rx_cons = 0;
}
bus_dmamap_sync(sc->sc_dmat, NEP_DMA_MAP(sc->sc_rcring), 0,
NEP_DMA_LEN(sc->sc_rcring), BUS_DMASYNC_PREREAD);
if (ifiq_input(&ifp->if_rcv, &ml))
if_rxr_livelocked(&sc->sc_rx_ring);
nep_fill_rx_ring(sc);
val = pktread | (ptrread << RX_DMA_CTL_STAT_PTRREAD_SHIFT);
val |= RX_DMA_CTL_STAT_MEX;
nep_write(sc, RX_DMA_CTL_STAT(sc->sc_port), val);
}
void
nep_extfree(caddr_t buf, u_int size, void *arg)
{
pool_put(nep_block_pool, arg);
}
void
nep_tx_proc(struct nep_softc *sc)
{
struct ifnet *ifp = &sc->sc_ac.ac_if;
struct nep_buf *txb;
uint64_t val;
uint16_t pkt_cnt, count;
int idx;
val = nep_read(sc, TX_CS(sc->sc_port));
pkt_cnt = (val & TX_CS_PKT_CNT_MASK) >> TX_CS_PKT_CNT_SHIFT;
count = (pkt_cnt - sc->sc_pkt_cnt);
count &= (TX_CS_PKT_CNT_MASK >> TX_CS_PKT_CNT_SHIFT);
sc->sc_pkt_cnt = pkt_cnt;
while (count > 0) {
idx = sc->sc_tx_cons;
KASSERT(idx < NEP_NTXDESC);
txb = &sc->sc_txbuf[idx];
if (txb->nb_m) {
bus_dmamap_sync(sc->sc_dmat, txb->nb_map, 0,
txb->nb_map->dm_mapsize, BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, txb->nb_map);
m_freem(txb->nb_m);
txb->nb_m = NULL;
count--;
}
ifq_clr_oactive(&ifp->if_snd);
sc->sc_tx_cnt--;
sc->sc_tx_cons++;
if (sc->sc_tx_cons >= NEP_NTXDESC)
sc->sc_tx_cons = 0;
}
if (sc->sc_tx_cnt == 0)
ifp->if_timer = 0;
}
void
nep_init_ipp(struct nep_softc *sc)
{
uint64_t val;
int num_entries;
int n, i;
if (sc->sc_port < 2)
num_entries = IPP_P0_P1_DFIFO_ENTRIES;
else
num_entries = IPP_P2_P3_DFIFO_ENTRIES;
for (i = 0; i < num_entries; i++)
nep_ipp_clear_dfifo(sc, i);
(void)nep_read(sc, IPP_INT_STAT(sc->sc_port));
(void)nep_read(sc, IPP_INT_STAT(sc->sc_port));
val = nep_read(sc, IPP_CFIG(sc->sc_port));
val |= IPP_CFIG_SOFT_RST;
nep_write(sc, IPP_CFIG(sc->sc_port), val);
n = 1000;
while (--n) {
val = nep_read(sc, IPP_CFIG(sc->sc_port));
if ((val & IPP_CFIG_SOFT_RST) == 0)
break;
}
if (n == 0)
printf("timeout resetting IPP\n");
val = nep_read(sc, IPP_CFIG(sc->sc_port));
val |= IPP_CFIG_IPP_ENABLE;
nep_write(sc, IPP_CFIG(sc->sc_port), val);
nep_write(sc, IPP_MSK(sc->sc_port), 0);
}
void
nep_ipp_clear_dfifo(struct nep_softc *sc, uint64_t addr)
{
uint64_t val;
val = nep_read(sc, IPP_CFIG(sc->sc_port));
val |= IPP_CFIG_DFIFO_PIO_W;
nep_write(sc, IPP_CFIG(sc->sc_port), val);
nep_write(sc, IPP_DFIFO_WR_PTR(sc->sc_port), addr);
nep_write(sc, IPP_DFIFO_WR1(sc->sc_port), 0);
nep_write(sc, IPP_DFIFO_WR2(sc->sc_port), 0);
nep_write(sc, IPP_DFIFO_WR3(sc->sc_port), 0);
nep_write(sc, IPP_DFIFO_WR4(sc->sc_port), 0);
nep_write(sc, IPP_DFIFO_WR5(sc->sc_port), 0);
val &= ~IPP_CFIG_DFIFO_PIO_W;
nep_write(sc, IPP_CFIG(sc->sc_port), val);
nep_write(sc, IPP_DFIFO_RD_PTR(sc->sc_port), addr);
(void)nep_read(sc, IPP_DFIFO_RD1(sc->sc_port));
(void)nep_read(sc, IPP_DFIFO_RD2(sc->sc_port));
(void)nep_read(sc, IPP_DFIFO_RD3(sc->sc_port));
(void)nep_read(sc, IPP_DFIFO_RD4(sc->sc_port));
(void)nep_read(sc, IPP_DFIFO_RD5(sc->sc_port));
}
void
nep_init_rx_mac(struct nep_softc *sc)
{
if (sc->sc_port < 2)
nep_init_rx_xmac(sc);
else
nep_init_rx_bmac(sc);
}
void
nep_init_rx_xmac(struct nep_softc *sc)
{
uint64_t addr0, addr1, addr2;
uint64_t val;
int n, i;
nep_write(sc, XRXMAC_SW_RST(sc->sc_port),
XRXMAC_SW_RST_REG_RST | XRXMAC_SW_RST_SOFT_RST);
n = 1000;
while (--n) {
val = nep_read(sc, XRXMAC_SW_RST(sc->sc_port));
if ((val & (XRXMAC_SW_RST_REG_RST |
XRXMAC_SW_RST_SOFT_RST)) == 0)
break;
}
if (n == 0)
printf("timeout resetting Rx MAC\n");
addr0 = (sc->sc_lladdr[4] << 8) | sc->sc_lladdr[5];
addr1 = (sc->sc_lladdr[2] << 8) | sc->sc_lladdr[3];
addr2 = (sc->sc_lladdr[0] << 8) | sc->sc_lladdr[1];
nep_write(sc, XMAC_ADDR0(sc->sc_port), addr0);
nep_write(sc, XMAC_ADDR1(sc->sc_port), addr1);
nep_write(sc, XMAC_ADDR2(sc->sc_port), addr2);
nep_write(sc, XMAC_ADDR_CMPEN(sc->sc_port), 0);
nep_write(sc, XMAC_ADD_FILT0(sc->sc_port), 0);
nep_write(sc, XMAC_ADD_FILT1(sc->sc_port), 0);
nep_write(sc, XMAC_ADD_FILT2(sc->sc_port), 0);
nep_write(sc, XMAC_ADD_FILT12_MASK(sc->sc_port), 0);
nep_write(sc, XMAC_ADD_FILT00_MASK(sc->sc_port), 0);
for (i = 0; i < 16; i++)
nep_write(sc, XMAC_HASH_TBL(sc->sc_port, i), 0);
for (i = 0; i < 20; i++)
nep_write(sc, XMAC_HOST_INFO(sc->sc_port, i), sc->sc_port);
}
void
nep_init_rx_bmac(struct nep_softc *sc)
{
uint64_t addr0, addr1, addr2;
uint64_t val;
int n, i;
nep_write(sc, RXMAC_SW_RST(sc->sc_port), RXMAC_SW_RST_SW_RST);
n = 1000;
while (--n) {
val = nep_read(sc, RXMAC_SW_RST(sc->sc_port));
if ((val & RXMAC_SW_RST_SW_RST) == 0)
break;
}
if (n == 0)
printf("timeout resetting Rx MAC\n");
val = nep_read(sc, RXMAC_CONFIG(sc->sc_port));
val &= ~RXMAC_CONFIG_ERROR_CHK_DIS;
val &= ~RXMAC_CONFIG_PROMISCUOUS;
val &= ~RXMAC_CONFIG_PROMISCUOUS_GROUP;
val &= ~RXMAC_CONFIG_ADDR_FILTER_EN;
val &= ~RXMAC_CONFIG_HASH_FILTER_EN;
val &= ~RXMAC_CONFIG_STRIP_FCS;
val &= ~RXMAC_CONFIG_STRIP_PAD;
val &= ~RXMAC_CONFIG_RX_ENABLE;
nep_write(sc, RXMAC_CONFIG(sc->sc_port), val);
addr0 = (sc->sc_lladdr[4] << 8) | sc->sc_lladdr[5];
addr1 = (sc->sc_lladdr[2] << 8) | sc->sc_lladdr[3];
addr2 = (sc->sc_lladdr[0] << 8) | sc->sc_lladdr[1];
nep_write(sc, BMAC_ADDR0(sc->sc_port), addr0);
nep_write(sc, BMAC_ADDR1(sc->sc_port), addr1);
nep_write(sc, BMAC_ADDR2(sc->sc_port), addr2);
nep_write(sc, BMAC_ALTAD_CMPEN(sc->sc_port), 1);
nep_write(sc, MAC_ADDR_FILT0(sc->sc_port), 0);
nep_write(sc, MAC_ADDR_FILT1(sc->sc_port), 0);
nep_write(sc, MAC_ADDR_FILT2(sc->sc_port), 0);
nep_write(sc, MAC_ADDR_FILT12_MASK(sc->sc_port), 0);
nep_write(sc, MAC_ADDR_FILT00_MASK(sc->sc_port), 0);
for (i = 0; i < 16; i++)
nep_write(sc, MAC_HASH_TBL(sc->sc_port, i), 0);
for (i = 0; i < 9; i++)
nep_write(sc, BMAC_HOST_INFO(sc->sc_port, i), sc->sc_port);
}
void
nep_init_rx_channel(struct nep_softc *sc, int chan)
{
uint64_t val;
int i, n;
val = nep_read(sc, RXDMA_CFIG1(chan));
val &= ~RXDMA_CFIG1_EN;
val |= RXDMA_CFIG1_RST;
nep_write(sc, RXDMA_CFIG1(chan), RXDMA_CFIG1_RST);
n = 1000;
while (--n) {
val = nep_read(sc, RXDMA_CFIG1(chan));
if ((val & RXDMA_CFIG1_RST) == 0)
break;
}
if (n == 0)
printf("timeout resetting Rx DMA\n");
nep_write(sc, RX_LOG_MASK1(chan), 0);
nep_write(sc, RX_LOG_VALUE1(chan), 0);
nep_write(sc, RX_LOG_MASK2(chan), 0);
nep_write(sc, RX_LOG_VALUE2(chan), 0);
nep_write(sc, RX_LOG_PAGE_RELO1(chan), 0);
nep_write(sc, RX_LOG_PAGE_RELO2(chan), 0);
nep_write(sc, RX_LOG_PAGE_HDL(chan), 0);
nep_write(sc, RX_LOG_PAGE_VLD(chan),
(sc->sc_port << RX_LOG_PAGE_VLD_FUNC_SHIFT) |
RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
nep_write(sc, RX_DMA_ENT_MSK(chan), RX_DMA_ENT_MSK_RBR_EMPTY);
nep_write(sc, RX_DMA_CTL_STAT(chan), RX_DMA_CTL_STAT_MEX);
val = NEP_DMA_DVA(sc->sc_rxmbox) >> 32;
nep_write(sc, RXDMA_CFIG1(chan), val);
val = NEP_DMA_DVA(sc->sc_rxmbox) & 0xffffffc0;
nep_write(sc, RXDMA_CFIG2(chan), val);
val = NEP_DMA_DVA(sc->sc_rbring);
val |= (uint64_t)NEP_NRBDESC << RBR_CFIG_A_LEN_SHIFT;
nep_write(sc, RBR_CFIG_A(chan), val);
val = RBR_CFIG_B_BLKSIZE_8K;
val |= RBR_CFIG_B_BUFSZ1_8K | RBR_CFIG_B_VLD1;
nep_write(sc, RBR_CFIG_B(chan), val);
nep_write(sc, RBR_KICK(chan), 0);
val = NEP_DMA_DVA(sc->sc_rcring);
val |= (uint64_t)NEP_NRCDESC << RCRCFIG_A_LEN_SHIFT;
nep_write(sc, RCRCFIG_A(chan), val);
val = 8 | RCRCFIG_B_ENTOUT;
val |= (16 << RCRCFIG_B_PTHRES_SHIFT);
nep_write(sc, RCRCFIG_B(chan), val);
nep_write(sc, DEF_PT_RDC(sc->sc_port), chan);
for (i = 0; i < 16; i++)
nep_write(sc, RDC_TBL(sc->sc_port, i), chan);
}
void
nep_init_tx_mac(struct nep_softc *sc)
{
if (sc->sc_port < 2)
nep_init_tx_xmac(sc);
else
nep_init_tx_bmac(sc);
}
void
nep_init_tx_xmac(struct nep_softc *sc)
{
uint64_t val;
int n;
nep_write(sc, XTXMAC_SW_RST(sc->sc_port),
XTXMAC_SW_RST_REG_RST | XTXMAC_SW_RST_SOFT_RST);
n = 1000;
while (--n) {
val = nep_read(sc, XTXMAC_SW_RST(sc->sc_port));
if ((val & (XTXMAC_SW_RST_REG_RST |
XTXMAC_SW_RST_SOFT_RST)) == 0)
break;
}
if (n == 0)
printf("timeout resetting Tx MAC\n");
val = nep_read(sc, XMAC_CONFIG(sc->sc_port));
val &= ~XMAC_CONFIG_ALWAYS_NO_CRC;
val &= ~XMAC_CONFIG_VAR_MIN_IPG_EN;
val &= ~XMAC_CONFIG_STRETCH_MODE;
val &= ~XMAC_CONFIG_TX_ENABLE;
nep_write(sc, XMAC_CONFIG(sc->sc_port), val);
val = nep_read(sc, XMAC_IPG(sc->sc_port));
val &= ~XMAC_IPG_IPG_VALUE1_MASK; /* MII/GMII mode */
val |= XMAC_IPG_IPG_VALUE1_12;
val &= ~XMAC_IPG_IPG_VALUE_MASK; /* XGMII mode */
val |= XMAC_IPG_IPG_VALUE_12_15;
nep_write(sc, XMAC_IPG(sc->sc_port), val);
val = nep_read(sc, XMAC_MIN(sc->sc_port));
val &= ~XMAC_MIN_RX_MIN_PKT_SIZE_MASK;
val &= ~XMAC_MIN_TX_MIN_PKT_SIZE_MASK;
val |= (64 << XMAC_MIN_RX_MIN_PKT_SIZE_SHIFT);
val |= (64 << XMAC_MIN_TX_MIN_PKT_SIZE_SHIFT);
nep_write(sc, XMAC_MIN(sc->sc_port), val);
nep_write(sc, XMAC_MAX(sc->sc_port), ETHER_MAX_LEN);
nep_write(sc, TXMAC_FRM_CNT(sc->sc_port), 0);
nep_write(sc, TXMAC_BYTE_CNT(sc->sc_port), 0);
}
void
nep_init_tx_bmac(struct nep_softc *sc)
{
uint64_t val;
int n;
nep_write(sc, TXMAC_SW_RST(sc->sc_port), TXMAC_SW_RST_SW_RST);
n = 1000;
while (--n) {
val = nep_read(sc, TXMAC_SW_RST(sc->sc_port));
if ((val & TXMAC_SW_RST_SW_RST) == 0)
break;
}
if (n == 0)
printf("timeout resetting Tx MAC\n");
nep_write(sc, BMAC_MIN(sc->sc_port), 0x40);
nep_write(sc, BMAC_MAX(sc->sc_port), ETHER_MAX_LEN |
(ETHER_MAX_LEN << BMAC_MAX_BURST_SHIFT));
nep_write(sc, MAC_CTRL_TYPE(sc->sc_port), 0x8808);
nep_write(sc, MAC_PA_SIZE(sc->sc_port), 0x7);
}
void
nep_init_tx_channel(struct nep_softc *sc, int chan)
{
uint64_t val;
int n;
val = nep_read(sc, TXC_CONTROL);
val |= TXC_CONTROL_TXC_ENABLED;
val |= (1ULL << sc->sc_port);
nep_write(sc, TXC_CONTROL, val);
nep_write(sc, TXC_PORT_DMA(sc->sc_port), 1ULL << chan);
val = nep_read(sc, TXC_INT_MASK);
val &= ~TXC_INT_MASK_PORT_INT_MASK(sc->sc_port);
nep_write(sc, TXC_INT_MASK, val);
val = nep_read(sc, TX_CS(chan));
val |= TX_CS_RST;
nep_write(sc, TX_CS(chan), val);
n = 1000;
while (--n) {
val = nep_read(sc, TX_CS(chan));
if ((val & TX_CS_RST) == 0)
break;
}
if (n == 0)
printf("timeout resetting Tx DMA\n");
nep_write(sc, TX_LOG_MASK1(chan), 0);
nep_write(sc, TX_LOG_VALUE1(chan), 0);
nep_write(sc, TX_LOG_MASK2(chan), 0);
nep_write(sc, TX_LOG_VALUE2(chan), 0);
nep_write(sc, TX_LOG_PAGE_RELO1(chan), 0);
nep_write(sc, TX_LOG_PAGE_RELO2(chan), 0);
nep_write(sc, TX_LOG_PAGE_HDL(chan), 0);
nep_write(sc, TX_LOG_PAGE_VLD(chan),
(sc->sc_port << TX_LOG_PAGE_VLD_FUNC_SHIFT) |
TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
nep_write(sc, TX_RING_KICK(chan), 0);
nep_write(sc, TXC_DMA_MAX(chan), ETHER_MAX_LEN + 64);
nep_write(sc, TX_ENT_MSK(chan), 0);
val = NEP_DMA_DVA(sc->sc_txring);
val |= (NEP_DMA_LEN(sc->sc_txring) / 64) << TX_RNG_CFIG_LEN_SHIFT;
nep_write(sc, TX_RNG_CFIG(chan), val);
nep_write(sc, TX_CS(chan), 0);
}
void
nep_enable_rx_mac(struct nep_softc *sc)
{
struct ifnet *ifp = &sc->sc_ac.ac_if;
uint64_t val;
if (sc->sc_port < 2) {
val = nep_read(sc, XMAC_CONFIG(sc->sc_port));
val &= ~XMAC_CONFIG_PROMISCUOUS;
val &= ~XMAC_CONFIG_PROMISCUOUS_GROUP;
val &= ~XMAC_CONFIG_HASH_FILTER_EN;
if (ifp->if_flags & IFF_PROMISC)
val |= XMAC_CONFIG_PROMISCUOUS;
if (ifp->if_flags & IFF_ALLMULTI)
val |= XMAC_CONFIG_PROMISCUOUS_GROUP;
else
val |= XMAC_CONFIG_HASH_FILTER_EN;
val |= XMAC_CONFIG_RX_MAC_ENABLE;
nep_write(sc, XMAC_CONFIG(sc->sc_port), val);
} else {
val = nep_read(sc, RXMAC_CONFIG(sc->sc_port));
val &= ~RXMAC_CONFIG_PROMISCUOUS;
val &= ~RXMAC_CONFIG_PROMISCUOUS_GROUP;
val &= ~RXMAC_CONFIG_HASH_FILTER_EN;
if (ifp->if_flags & IFF_PROMISC)
val |= RXMAC_CONFIG_PROMISCUOUS;
if (ifp->if_flags & IFF_ALLMULTI)
val |= RXMAC_CONFIG_PROMISCUOUS_GROUP;
else
val |= RXMAC_CONFIG_HASH_FILTER_EN;
val |= RXMAC_CONFIG_RX_ENABLE;
nep_write(sc, RXMAC_CONFIG(sc->sc_port), val);
}
}
void
nep_disable_rx_mac(struct nep_softc *sc)
{
uint64_t val;
if (sc->sc_port < 2) {
val = nep_read(sc, XMAC_CONFIG(sc->sc_port));
val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
nep_write(sc, XMAC_CONFIG(sc->sc_port), val);
} else {
val = nep_read(sc, RXMAC_CONFIG(sc->sc_port));
val &= ~RXMAC_CONFIG_RX_ENABLE;
nep_write(sc, RXMAC_CONFIG(sc->sc_port), val);
}
}
void
nep_stop_dma(struct nep_softc *sc)
{
uint64_t val;
int n;
val = nep_read(sc, TX_CS(sc->sc_port));
val |= TX_CS_STOP_N_GO;
nep_write(sc, TX_CS(sc->sc_port), val);
n = 1000;
while (--n) {
val = nep_read(sc, TX_CS(sc->sc_port));
if (val & TX_CS_SNG_STATE)
break;
}
if (n == 0)
printf("timeout stopping Tx DMA\n");
val = nep_read(sc, RXDMA_CFIG1(sc->sc_port));
val &= ~RXDMA_CFIG1_EN;
nep_write(sc, RXDMA_CFIG1(sc->sc_port), val);
n = 1000;
while (--n) {
val = nep_read(sc, RXDMA_CFIG1(sc->sc_port));
if (val & RXDMA_CFIG1_QST)
break;
}
if (n == 0)
printf("timeout stopping Rx DMA\n");
}
void
nep_up(struct nep_softc *sc)
{
struct ifnet *ifp = &sc->sc_ac.ac_if;
struct nep_block *rb;
struct nep_buf *txb;
uint64_t val;
int i, n;
/* Allocate Rx block descriptor ring. */
sc->sc_rbring = nep_dmamem_alloc(sc, NEP_NRBDESC * sizeof(uint32_t));
if (sc->sc_rbring == NULL)
return;
sc->sc_rbdesc = NEP_DMA_KVA(sc->sc_rbring);
sc->sc_rb = malloc(sizeof(struct nep_block) * NEP_NRBDESC,
M_DEVBUF, M_WAITOK);
for (i = 0; i < NEP_NRBDESC; i++) {
rb = &sc->sc_rb[i];
bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0,
BUS_DMA_WAITOK, &rb->nb_map);
rb->nb_block = NULL;
}
sc->sc_rx_prod = 0;
if_rxr_init(&sc->sc_rx_ring, 16, NEP_NRBDESC);
/* Allocate Rx completion descriptor ring. */
sc->sc_rcring = nep_dmamem_alloc(sc, NEP_NRCDESC * sizeof(uint64_t));
if (sc->sc_rcring == NULL)
goto free_rbring;
sc->sc_rcdesc = NEP_DMA_KVA(sc->sc_rcring);
sc->sc_rx_cons = 0;
/* Allocate Rx mailbox. */
sc->sc_rxmbox = nep_dmamem_alloc(sc, 64);
if (sc->sc_rxmbox == NULL)
goto free_rcring;
/* Allocate Tx descriptor ring. */
sc->sc_txring = nep_dmamem_alloc(sc, NEP_NTXDESC * sizeof(uint64_t));
if (sc->sc_txring == NULL)
goto free_rxmbox;
sc->sc_txdesc = NEP_DMA_KVA(sc->sc_txring);
sc->sc_txbuf = malloc(sizeof(struct nep_buf) * NEP_NTXDESC,
M_DEVBUF, M_WAITOK);
for (i = 0; i < NEP_NTXDESC; i++) {
txb = &sc->sc_txbuf[i];
bus_dmamap_create(sc->sc_dmat, MCLBYTES, NEP_NTXSEGS,
MCLBYTES, 0, BUS_DMA_WAITOK, &txb->nb_map);
txb->nb_m = NULL;
}
sc->sc_tx_prod = sc->sc_tx_cons = 0;
sc->sc_tx_cnt = 0;
sc->sc_wrap = 0;
sc->sc_pkt_cnt = 0;
if (sc->sc_port < 2) {
/* Disable the POR loopback clock source. */
val = nep_read(sc, XMAC_CONFIG(sc->sc_port));
val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
nep_write(sc, XMAC_CONFIG(sc->sc_port), val);
}
nep_write(sc, PCS_DPATH_MODE(sc->sc_port), PCS_DPATH_MODE_MII);
val = nep_read(sc, PCS_MII_CTL(sc->sc_port));
val |= PCS_MII_CTL_RESET;
nep_write(sc, PCS_MII_CTL(sc->sc_port), val);
n = 1000;
while (--n) {
val = nep_read(sc, PCS_MII_CTL(sc->sc_port));
if ((val & PCS_MII_CTL_RESET) == 0)
break;
}
if (n == 0)
printf("timeout resetting PCS\n");
nep_init_rx_mac(sc);
nep_init_rx_channel(sc, sc->sc_port);
nep_init_ipp(sc);
nep_init_tx_mac(sc);
nep_init_tx_channel(sc, sc->sc_port);
nep_fill_rx_ring(sc);
nep_enable_rx_mac(sc);
if (sc->sc_port < 2) {
val = nep_read(sc, XMAC_CONFIG(sc->sc_port));
val |= XMAC_CONFIG_TX_ENABLE;
nep_write(sc, XMAC_CONFIG(sc->sc_port), val);
} else {
val = nep_read(sc, TXMAC_CONFIG(sc->sc_port));
val |= TXMAC_CONFIG_TX_ENABLE;
nep_write(sc, TXMAC_CONFIG(sc->sc_port), val);
}
val = nep_read(sc, RXDMA_CFIG1(sc->sc_port));
val |= RXDMA_CFIG1_EN;
nep_write(sc, RXDMA_CFIG1(sc->sc_port), val);
ifp->if_flags |= IFF_RUNNING;
ifq_clr_oactive(&ifp->if_snd);
ifp->if_timer = 0;
/* Enable interrupts. */
nep_write(sc, LD_IM1(LDN_MAC(sc->sc_port)), 0);
nep_write(sc, LD_IM0(LDN_RXDMA(sc->sc_port)), 0);
nep_write(sc, LD_IM0(LDN_TXDMA(sc->sc_port)), 0);
nep_write(sc, LDGIMGN(sc->sc_port), LDGIMGN_ARM | 2);
timeout_add_sec(&sc->sc_tick, 1);
return;
free_rxmbox:
nep_dmamem_free(sc, sc->sc_rxmbox);
free_rcring:
nep_dmamem_free(sc, sc->sc_rcring);
free_rbring:
nep_dmamem_free(sc, sc->sc_rbring);
}
void
nep_down(struct nep_softc *sc)
{
struct ifnet *ifp = &sc->sc_ac.ac_if;
struct nep_buf *txb;
struct nep_block *rb;
uint64_t val;
int i;
timeout_del(&sc->sc_tick);
/* Disable interrupts. */
nep_write(sc, LD_IM1(LDN_MAC(sc->sc_port)), 1);
nep_write(sc, LD_IM0(LDN_RXDMA(sc->sc_port)), 1);
nep_write(sc, LD_IM0(LDN_TXDMA(sc->sc_port)), 1);
ifp->if_flags &= ~IFF_RUNNING;
ifq_clr_oactive(&ifp->if_snd);
ifp->if_timer = 0;
nep_disable_rx_mac(sc);
val = nep_read(sc, IPP_CFIG(sc->sc_port));
val &= ~IPP_CFIG_IPP_ENABLE;
nep_write(sc, IPP_CFIG(sc->sc_port), val);
nep_stop_dma(sc);
for (i = 0; i < NEP_NTXDESC; i++) {
txb = &sc->sc_txbuf[i];
if (txb->nb_m) {
bus_dmamap_sync(sc->sc_dmat, txb->nb_map, 0,
txb->nb_map->dm_mapsize, BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, txb->nb_map);
m_freem(txb->nb_m);
}
bus_dmamap_destroy(sc->sc_dmat, txb->nb_map);
}
nep_dmamem_free(sc, sc->sc_txring);
free(sc->sc_txbuf, M_DEVBUF, sizeof(struct nep_buf) * NEP_NTXDESC);
nep_dmamem_free(sc, sc->sc_rxmbox);
nep_dmamem_free(sc, sc->sc_rcring);
for (i = 0; i < NEP_NRBDESC; i++) {
rb = &sc->sc_rb[i];
if (rb->nb_block) {
bus_dmamap_sync(sc->sc_dmat, rb->nb_map, 0,
rb->nb_map->dm_mapsize, BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->sc_dmat, rb->nb_map);
pool_put(nep_block_pool, rb->nb_block);
}
bus_dmamap_destroy(sc->sc_dmat, rb->nb_map);
}
nep_dmamem_free(sc, sc->sc_rbring);
free(sc->sc_rb, M_DEVBUF, sizeof(struct nep_block) * NEP_NRBDESC);
}
void
nep_iff(struct nep_softc *sc)
{
struct arpcom *ac = &sc->sc_ac;
struct ifnet *ifp = &sc->sc_ac.ac_if;
struct ether_multi *enm;
struct ether_multistep step;
uint32_t crc, hash[16];
int i;
nep_disable_rx_mac(sc);
ifp->if_flags &= ~IFF_ALLMULTI;
memset(hash, 0, sizeof(hash));
if (ifp->if_flags & IFF_PROMISC || ac->ac_multirangecnt > 0) {
ifp->if_flags |= IFF_ALLMULTI;
} else {
ETHER_FIRST_MULTI(step, ac, enm);
while (enm != NULL) {
crc = ether_crc32_le(enm->enm_addrlo,
ETHER_ADDR_LEN);
crc >>= 24;
hash[crc >> 4] |= 1 << (15 - (crc & 15));
ETHER_NEXT_MULTI(step, enm);
}
}
for (i = 0; i < nitems(hash); i++) {
if (sc->sc_port < 2)
nep_write(sc, XMAC_HASH_TBL(sc->sc_port, i), hash[i]);
else
nep_write(sc, MAC_HASH_TBL(sc->sc_port, i), hash[i]);
}
nep_enable_rx_mac(sc);
}
int
nep_encap(struct nep_softc *sc, struct mbuf **m0, int *idx)
{
struct mbuf *m = *m0;
struct nep_txbuf_hdr *nh;
uint64_t txd;
bus_dmamap_t map;
int cur, frag, i;
int len, pad;
int err;
/*
* MAC does not support padding of transmit packets that are
* fewer than 60 bytes.
*/
if (m->m_pkthdr.len < (ETHER_MIN_LEN - ETHER_CRC_LEN)) {
struct mbuf *n;
int padlen;
padlen = (ETHER_MIN_LEN - ETHER_CRC_LEN) - m->m_pkthdr.len;
MGET(n, M_DONTWAIT, MT_DATA);
if (n == NULL) {
m_freem(m);
return (ENOBUFS);
}
memset(mtod(n, caddr_t), 0, padlen);
n->m_len = padlen;
m_cat(m, n);
m->m_pkthdr.len += padlen;
}
if (m_leadingspace(m) < 16)
pad = 0;
else
pad = mtod(m, u_long) % 16;
len = m->m_pkthdr.len + pad;
M_PREPEND(m, sizeof(*nh) + pad, M_DONTWAIT);
if (m == NULL)
return (ENOBUFS);
nh = mtod(m, struct nep_txbuf_hdr *);
nh->nh_flags = htole64((len << 16) | (pad / 2));
nh->nh_reserved = 0;
cur = frag = *idx;
map = sc->sc_txbuf[cur].nb_map;
err = bus_dmamap_load_mbuf(sc->sc_dmat, map, m, BUS_DMA_NOWAIT);
if (err) {
/* XXX defrag */
m_freem(m);
return (ENOBUFS);
}
/* Sync the DMA map. */
bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize,
BUS_DMASYNC_PREWRITE);
txd = TXD_SOP | TXD_MARK;
txd |= ((uint64_t)map->dm_nsegs << TXD_NUM_PTR_SHIFT);
for (i = 0; i < map->dm_nsegs; i++) {
txd |= ((uint64_t)map->dm_segs[i].ds_len << TXD_TR_LEN_SHIFT);
txd |= map->dm_segs[i].ds_addr;
sc->sc_txdesc[frag] = htole64(txd);
txd = 0;
bus_dmamap_sync(sc->sc_dmat, NEP_DMA_MAP(sc->sc_txring),
frag * sizeof(txd), sizeof(txd), BUS_DMASYNC_PREWRITE);
cur = frag++;
if (frag >= NEP_NTXDESC)
frag = 0;
KASSERT(frag != sc->sc_tx_cons);
}
KASSERT(sc->sc_txbuf[cur].nb_m == NULL);
sc->sc_txbuf[*idx].nb_map = sc->sc_txbuf[cur].nb_map;
sc->sc_txbuf[cur].nb_map = map;
sc->sc_txbuf[cur].nb_m = m;
if (frag < *idx)
sc->sc_wrap ^= TX_RING_KICK_WRAP;
nep_write(sc, TX_RING_KICK(sc->sc_port), sc->sc_wrap | (frag << 3));
sc->sc_tx_cnt += map->dm_nsegs;
*idx = frag;
m_adj(m, sizeof(*nh) + pad);
*m0 = m;
return (0);
}
void
nep_start(struct ifnet *ifp)
{
struct nep_softc *sc = (struct nep_softc *)ifp->if_softc;
struct mbuf *m;
int idx;
if (!(ifp->if_flags & IFF_RUNNING))
return;
if (ifq_is_oactive(&ifp->if_snd))
return;
if (ifq_empty(&ifp->if_snd))
return;
idx = sc->sc_tx_prod;
for (;;) {
m = ifq_deq_begin(&ifp->if_snd);
if (m == NULL)
break;
if (sc->sc_tx_cnt >= (NEP_NTXDESC - NEP_NTXSEGS)) {
ifq_deq_rollback(&ifp->if_snd, m);
ifq_set_oactive(&ifp->if_snd);
break;
}
/* Now we are committed to transmit the packet. */
ifq_deq_commit(&ifp->if_snd, m);
if (nep_encap(sc, &m, &idx))
break;
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_OUT);
#endif
}
if (sc->sc_tx_prod != idx) {
sc->sc_tx_prod = idx;
/* Set a timeout in case the chip goes out to lunch. */
ifp->if_timer = 5;
}
}
void
nep_watchdog(struct ifnet *ifp)
{
printf("%s\n", __func__);
}
void
nep_tick(void *arg)
{
struct nep_softc *sc = arg;
int s;
s = splnet();
mii_tick(&sc->sc_mii);
splx(s);
timeout_add_sec(&sc->sc_tick, 1);
}
int
nep_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct nep_softc *sc = (struct nep_softc *)ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
int s, error = 0;
s = splnet();
switch (cmd) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
/* FALLTHROUGH */
case SIOCSIFFLAGS:
if (ISSET(ifp->if_flags, IFF_UP)) {
if (ISSET(ifp->if_flags, IFF_RUNNING))
error = ENETRESET;
else
nep_up(sc);
} else {
if (ISSET(ifp->if_flags, IFF_RUNNING))
nep_down(sc);
}
break;
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd);
break;
default:
error = ether_ioctl(ifp, &sc->sc_ac, cmd, data);
}
if (error == ENETRESET) {
if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
(IFF_UP | IFF_RUNNING))
nep_iff(sc);
error = 0;
}
splx(s);
return (error);
}
void
nep_fill_rx_ring(struct nep_softc *sc)
{
struct nep_block *rb;
void *block;
uint64_t val;
u_int slots;
int desc, err;
int count = 0;
desc = sc->sc_rx_prod;
slots = if_rxr_get(&sc->sc_rx_ring, NEP_NRBDESC);
while (slots > 0) {
rb = &sc->sc_rb[desc];
block = pool_get(nep_block_pool, PR_NOWAIT);
if (block == NULL)
break;
err = bus_dmamap_load(sc->sc_dmat, rb->nb_map, block,
PAGE_SIZE, NULL, BUS_DMA_NOWAIT);
if (err) {
pool_put(nep_block_pool, block);
break;
}
rb->nb_block = block;
sc->sc_rbdesc[desc++] =
htole32(rb->nb_map->dm_segs[0].ds_addr >> 12);
count++;
slots--;
if (desc >= NEP_NRBDESC)
desc = 0;
}
if_rxr_put(&sc->sc_rx_ring, slots);
if (count > 0) {
nep_write(sc, RBR_KICK(sc->sc_port), count);
val = nep_read(sc, RX_DMA_CTL_STAT(sc->sc_port));
val |= RX_DMA_CTL_STAT_RBR_EMPTY;
nep_write(sc, RX_DMA_CTL_STAT(sc->sc_port), val);
sc->sc_rx_prod = desc;
}
}
struct nep_dmamem *
nep_dmamem_alloc(struct nep_softc *sc, size_t size)
{
struct nep_dmamem *m;
int nsegs;
m = malloc(sizeof(*m), M_DEVBUF, M_NOWAIT | M_ZERO);
if (m == NULL)
return (NULL);
m->ndm_size = size;
if (bus_dmamap_create(sc->sc_dmat, size, 1, size, 0,
BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &m->ndm_map) != 0)
goto qdmfree;
if (bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &m->ndm_seg, 1,
&nsegs, BUS_DMA_NOWAIT | BUS_DMA_ZERO) != 0)
goto destroy;
if (bus_dmamem_map(sc->sc_dmat, &m->ndm_seg, nsegs, size, &m->ndm_kva,
BUS_DMA_NOWAIT) != 0)
goto free;
if (bus_dmamap_load(sc->sc_dmat, m->ndm_map, m->ndm_kva, size, NULL,
BUS_DMA_NOWAIT) != 0)
goto unmap;
return (m);
unmap:
bus_dmamem_unmap(sc->sc_dmat, m->ndm_kva, m->ndm_size);
free:
bus_dmamem_free(sc->sc_dmat, &m->ndm_seg, 1);
destroy:
bus_dmamap_destroy(sc->sc_dmat, m->ndm_map);
qdmfree:
free(m, M_DEVBUF, sizeof(*m));
return (NULL);
}
void
nep_dmamem_free(struct nep_softc *sc, struct nep_dmamem *m)
{
bus_dmamap_unload(sc->sc_dmat, m->ndm_map);
bus_dmamem_unmap(sc->sc_dmat, m->ndm_kva, m->ndm_size);
bus_dmamem_free(sc->sc_dmat, &m->ndm_seg, 1);
bus_dmamap_destroy(sc->sc_dmat, m->ndm_map);
free(m, M_DEVBUF, sizeof(*m));
}
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