1 /* $NetBSD: hd64570var.h,v 1.10 2010/07/27 19:40:16 jakllsch Exp $ */ 2 3 /* 4 * Copyright (c) 1999 Christian E. Hopps 5 * Copyright (c) 1998 Vixie Enterprises 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of Vixie Enterprises nor the names 18 * of its contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY VIXIE ENTERPRISES AND 22 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 23 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * DISCLAIMED. IN NO EVENT SHALL VIXIE ENTERPRISES OR 26 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 29 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 30 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * This software has been written for Vixie Enterprises by Michael Graff 36 * <explorer@flame.org>. To learn more about Vixie Enterprises, see 37 * ``http://www.vix.com''. 38 */ 39 40 #ifndef _DEV_IC_HD64570VAR_H_ 41 #define _DEV_IC_HD64570VAR_H_ 42 43 #define SCA_USE_FASTQ /* use a split queue, one for fast traffic */ 44 45 #define SCA_MTU 1500 /* hard coded */ 46 47 #ifndef SCA_BSIZE 48 #define SCA_BSIZE (SCA_MTU + 4) /* room for HDLC as well */ 49 #endif 50 51 52 struct sca_softc; 53 typedef struct sca_port sca_port_t; 54 typedef struct sca_desc sca_desc_t; 55 56 /* 57 * device DMA descriptor 58 */ 59 struct sca_desc { 60 u_int16_t sd_chainp; /* chain pointer */ 61 u_int16_t sd_bufp; /* buffer pointer (low bits) */ 62 u_int8_t sd_hbufp; /* buffer pointer (high bits) */ 63 u_int8_t sd_unused0; 64 u_int16_t sd_buflen; /* total length */ 65 u_int8_t sd_stat; /* status */ 66 u_int8_t sd_unused1; 67 }; 68 #define SCA_DESC_EOT 0x01 69 #define SCA_DESC_CRC 0x04 70 #define SCA_DESC_OVRN 0x08 71 #define SCA_DESC_RESD 0x10 72 #define SCA_DESC_ABORT 0x20 73 #define SCA_DESC_SHRTFRM 0x40 74 #define SCA_DESC_EOM 0x80 75 #define SCA_DESC_ERRORS 0x7C 76 77 /* 78 * softc structure for each port 79 */ 80 struct sca_port { 81 u_int msci_off; /* offset for msci address for this port */ 82 u_int dmac_off; /* offset of dmac address for this port */ 83 84 u_int sp_port; 85 86 /* 87 * CISCO keepalive stuff 88 */ 89 u_int32_t cka_lasttx; 90 u_int32_t cka_lastrx; 91 92 /* 93 * clock values, clockrate = sysclock / tmc / 2^div; 94 */ 95 u_int8_t sp_eclock; /* enable external clock generate */ 96 u_int8_t sp_rxs; /* recv clock source */ 97 u_int8_t sp_txs; /* transmit clock source */ 98 u_int8_t sp_tmc; /* clock constant */ 99 100 /* 101 * start of each important bit of information for transmit and 102 * receive buffers. 103 * 104 * note: for non-DMA the phys and virtual version should be 105 * the same value and should be an _offset_ from the beginning 106 * of mapped memory described by sc_memt/sc_memh. 107 */ 108 u_int sp_ntxdesc; /* number of tx descriptors */ 109 bus_addr_t sp_txdesc_p; /* paddress of first tx desc */ 110 sca_desc_t *sp_txdesc; /* vaddress of first tx desc */ 111 bus_addr_t sp_txbuf_p; /* paddress of first tx buffer */ 112 u_int8_t *sp_txbuf; /* vaddress of first tx buffer */ 113 114 volatile u_int sp_txcur; /* last descriptor in chain */ 115 volatile u_int sp_txinuse; /* descriptors in use */ 116 volatile u_int sp_txstart; /* start descriptor */ 117 118 u_int sp_nrxdesc; /* number of rx descriptors */ 119 bus_addr_t sp_rxdesc_p; /* paddress of first rx desc */ 120 sca_desc_t *sp_rxdesc; /* vaddress of first rx desc */ 121 bus_addr_t sp_rxbuf_p; /* paddress of first rx buffer */ 122 u_int8_t *sp_rxbuf; /* vaddress of first rx buffer */ 123 124 u_int sp_rxstart; /* index of first descriptor */ 125 u_int sp_rxend; /* index of last descriptor */ 126 127 struct ifnet sp_if; /* the network information */ 128 struct ifqueue linkq; /* link-level packets are high prio */ 129 #ifdef SCA_USE_FASTQ 130 struct ifqueue fastq; /* interactive packets */ 131 #endif 132 133 struct sca_softc *sca; /* pointer to parent */ 134 }; 135 136 /* 137 * softc structure for the chip itself 138 */ 139 struct sca_softc { 140 struct device *sc_parent; /* our parent device, or NULL */ 141 int sc_numports; /* number of ports present */ 142 u_int32_t sc_baseclock; /* the base operating clock */ 143 144 /* 145 * a callback into the parent, since the SCA chip has no control 146 * over DTR, we have to make a callback into the parent, which 147 * might know about DTR. 148 * 149 * If the function pointer is NULL, no callback is specified. 150 */ 151 void *sc_aux; 152 void (*sc_dtr_callback)(void *, int, int); 153 void (*sc_clock_callback)(void *, int, int); 154 155 /* used to read and write the device registers */ 156 u_int8_t (*sc_read_1)(struct sca_softc *, u_int); 157 u_int16_t (*sc_read_2)(struct sca_softc *, u_int); 158 void (*sc_write_1)(struct sca_softc *, u_int, u_int8_t); 159 void (*sc_write_2)(struct sca_softc *, u_int, u_int16_t); 160 161 sca_port_t sc_ports[2]; 162 163 bus_space_tag_t sc_iot; /* io space for registers */ 164 bus_space_handle_t sc_ioh; /* io space for registers */ 165 166 int sc_usedma; 167 union { 168 struct { 169 bus_space_tag_t p_memt; /* mem for non-DMA */ 170 bus_space_handle_t p_memh; /* mem for non-DMA */ 171 bus_space_handle_t p_sca_ioh[16]; /* io for sca regs */ 172 bus_size_t p_pagesize; /* memory page size */ 173 bus_size_t p_pagemask; /* memory page mask */ 174 u_int p_pageshift; /* memory page shift */ 175 bus_size_t p_npages; /* num mem pages */ 176 177 void (*p_set_page)(struct sca_softc *, bus_addr_t); 178 void (*p_page_on)(struct sca_softc *); 179 void (*p_page_off)(struct sca_softc *); 180 } u_paged; 181 struct { 182 bus_dma_tag_t d_dmat; /* bus DMA tag */ 183 bus_dmamap_t d_dmam; /* bus DMA map */ 184 bus_dma_segment_t d_seg; /* bus DMA segment */ 185 void * d_dma_addr; /* kva of segment */ 186 bus_size_t d_allocsize; /* size of region */ 187 } u_dma; 188 } sc_u; 189 }; 190 #define scu_memt sc_u.u_paged.p_memt 191 #define scu_memh sc_u.u_paged.p_memh 192 #define scu_sca_ioh sc_u.u_paged.p_sca_ioh 193 #define scu_pagesize sc_u.u_paged.p_pagesize 194 #define scu_pagemask sc_u.u_paged.p_pagemask 195 #define scu_pageshift sc_u.u_paged.p_pageshift 196 #define scu_npages sc_u.u_paged.p_npages 197 #define scu_set_page sc_u.u_paged.p_set_page 198 #define scu_page_on sc_u.u_paged.p_page_on 199 #define scu_page_off sc_u.u_paged.p_page_off 200 #define scu_dmat sc_u.u_dma.d_dmat 201 #define scu_dmam sc_u.u_dma.d_dmam 202 #define scu_seg sc_u.u_dma.d_seg 203 #define scu_dma_addr sc_u.u_dma.d_dma_addr 204 #define scu_allocsize sc_u.u_dma.d_allocsize 205 206 void sca_init(struct sca_softc *); 207 void sca_port_attach(struct sca_softc *, u_int); 208 int sca_hardintr(struct sca_softc *); 209 void sca_shutdown(struct sca_softc *); 210 void sca_get_base_clock(struct sca_softc *); 211 void sca_print_clock_info(struct sca_softc *); 212 213 #endif /* _DEV_IC_HD64570VAR_H_ */ 214