1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (C) 2006-2007 Semihalf, Piotr Kruszynski 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 19 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 23 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 24 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _IF_TSEC_H 31 #define _IF_TSEC_H 32 33 #include <dev/ofw/openfirm.h> 34 35 #define TSEC_RX_NUM_DESC 256 36 #define TSEC_TX_NUM_DESC 256 37 #define TSEC_TX_MAX_DMA_SEGS 8 38 39 /* Interrupt Coalescing types */ 40 #define TSEC_IC_RX 0 41 #define TSEC_IC_TX 1 42 43 /* eTSEC ID */ 44 #define TSEC_ETSEC_ID 0x0124 45 46 /* Frame sizes */ 47 #define TSEC_MIN_FRAME_SIZE 64 48 #define TSEC_MAX_FRAME_SIZE 9600 49 50 struct tsec_bufmap { 51 bus_dmamap_t map; 52 int map_initialized; 53 struct mbuf *mbuf; 54 }; 55 56 struct tsec_softc { 57 /* XXX MII bus requires that struct ifnet is first!!! */ 58 struct ifnet *tsec_ifp; 59 60 struct mtx transmit_lock; /* transmitter lock */ 61 struct mtx receive_lock; /* receiver lock */ 62 63 phandle_t node; 64 device_t dev; 65 device_t tsec_miibus; 66 struct mii_data *tsec_mii; /* MII media control */ 67 int tsec_link; 68 69 bus_dma_tag_t tsec_tx_dtag; /* TX descriptors tag */ 70 bus_dmamap_t tsec_tx_dmap; /* TX descriptors map */ 71 bus_dma_tag_t tsec_tx_mtag; /* TX mbufs tag */ 72 uint32_t tx_idx_head; /* TX head descriptor/bufmap index */ 73 uint32_t tx_idx_tail; /* TX tail descriptor/bufmap index */ 74 struct tsec_desc *tsec_tx_vaddr;/* virtual address of TX descriptors */ 75 struct tsec_bufmap tx_bufmap[TSEC_TX_NUM_DESC]; 76 77 bus_dma_tag_t tsec_rx_mtag; /* TX mbufs tag */ 78 bus_dma_tag_t tsec_rx_dtag; /* RX descriptors tag */ 79 bus_dmamap_t tsec_rx_dmap; /* RX descriptors map */ 80 struct tsec_desc *tsec_rx_vaddr; /* vadress of RX descriptors */ 81 82 struct rx_data_type { 83 bus_dmamap_t map; /* mbuf map */ 84 struct mbuf *mbuf; 85 uint32_t paddr; /* DMA address of buffer */ 86 } rx_data[TSEC_RX_NUM_DESC]; 87 88 uint32_t rx_cur_desc_cnt; 89 90 struct resource *sc_rres; /* register resource */ 91 int sc_rrid; /* register rid */ 92 struct { 93 bus_space_tag_t bst; 94 bus_space_handle_t bsh; 95 } sc_bas; 96 97 struct resource *sc_transmit_ires; 98 void *sc_transmit_ihand; 99 int sc_transmit_irid; 100 struct resource *sc_receive_ires; 101 void *sc_receive_ihand; 102 int sc_receive_irid; 103 struct resource *sc_error_ires; 104 void *sc_error_ihand; 105 int sc_error_irid; 106 107 int tsec_if_flags; 108 int is_etsec; 109 110 /* Watchdog and MII tick related */ 111 struct callout tsec_callout; 112 int tsec_watchdog; 113 114 /* interrupt coalescing */ 115 struct mtx ic_lock; 116 uint32_t rx_ic_time; /* RW, valid values 0..65535 */ 117 uint32_t rx_ic_count; /* RW, valid values 0..255 */ 118 uint32_t tx_ic_time; 119 uint32_t tx_ic_count; 120 121 /* currently received frame */ 122 struct mbuf *frame; 123 124 int phyaddr; 125 bus_space_tag_t phy_bst; 126 bus_space_handle_t phy_bsh; 127 int phy_regoff; 128 129 uint32_t tsec_rx_raddr; /* real address of RX descriptors */ 130 uint32_t tsec_tx_raddr; /* real address of TX descriptors */ 131 }; 132 133 /* interface to get/put generic objects */ 134 #define TSEC_CNT_INIT(cnt, wrap) ((cnt) = ((wrap) - 1)) 135 136 #define TSEC_INC(count, wrap) (count = ((count) + 1) & ((wrap) - 1)) 137 138 #define TSEC_GET_GENERIC(hand, tab, count, wrap) \ 139 ((hand)->tab[TSEC_INC((hand)->count, wrap)]) 140 141 #define TSEC_PUT_GENERIC(hand, tab, count, wrap, val) \ 142 ((hand)->tab[TSEC_INC((hand)->count, wrap)] = val) 143 144 #define TSEC_BACK_GENERIC(sc, count, wrap) do { \ 145 if ((sc)->count > 0) \ 146 (sc)->count--; \ 147 else \ 148 (sc)->count = (wrap) - 1; \ 149 } while (0) 150 151 #define TSEC_FREE_TX_DESC(sc) \ 152 (((sc)->tx_idx_tail - (sc)->tx_idx_head - 1) & (TSEC_TX_NUM_DESC - 1)) 153 154 /* interface for manage rx tsec_desc */ 155 #define TSEC_RX_DESC_CNT_INIT(sc) do { \ 156 TSEC_CNT_INIT((sc)->rx_cur_desc_cnt, TSEC_RX_NUM_DESC); \ 157 } while (0) 158 159 #define TSEC_GET_CUR_RX_DESC(sc) \ 160 &TSEC_GET_GENERIC(sc, tsec_rx_vaddr, rx_cur_desc_cnt, \ 161 TSEC_RX_NUM_DESC) 162 163 #define TSEC_BACK_CUR_RX_DESC(sc) \ 164 TSEC_BACK_GENERIC(sc, rx_cur_desc_cnt, TSEC_RX_NUM_DESC) 165 166 #define TSEC_GET_CUR_RX_DESC_CNT(sc) \ 167 ((sc)->rx_cur_desc_cnt) 168 169 /* init all counters (for init only!) */ 170 #define TSEC_TX_RX_COUNTERS_INIT(sc) do { \ 171 sc->tx_idx_head = 0; \ 172 sc->tx_idx_tail = 0; \ 173 TSEC_RX_DESC_CNT_INIT(sc); \ 174 } while (0) 175 176 /* read/write bus functions */ 177 #define TSEC_READ(sc, reg) \ 178 bus_space_read_4((sc)->sc_bas.bst, (sc)->sc_bas.bsh, (reg)) 179 #define TSEC_WRITE(sc, reg, val) \ 180 bus_space_write_4((sc)->sc_bas.bst, (sc)->sc_bas.bsh, (reg), (val)) 181 182 extern struct mtx tsec_phy_mtx; 183 #define TSEC_PHY_LOCK(sc) mtx_lock(&tsec_phy_mtx) 184 #define TSEC_PHY_UNLOCK(sc) mtx_unlock(&tsec_phy_mtx) 185 #define TSEC_PHY_READ(sc, reg) \ 186 bus_space_read_4((sc)->phy_bst, (sc)->phy_bsh, \ 187 (reg) + (sc)->phy_regoff) 188 #define TSEC_PHY_WRITE(sc, reg, val) \ 189 bus_space_write_4((sc)->phy_bst, (sc)->phy_bsh, \ 190 (reg) + (sc)->phy_regoff, (val)) 191 192 /* Lock for transmitter */ 193 #define TSEC_TRANSMIT_LOCK(sc) do { \ 194 mtx_assert(&(sc)->receive_lock, MA_NOTOWNED); \ 195 mtx_lock(&(sc)->transmit_lock); \ 196 } while (0) 197 198 #define TSEC_TRANSMIT_UNLOCK(sc) mtx_unlock(&(sc)->transmit_lock) 199 #define TSEC_TRANSMIT_LOCK_ASSERT(sc) mtx_assert(&(sc)->transmit_lock, MA_OWNED) 200 201 /* Lock for receiver */ 202 #define TSEC_RECEIVE_LOCK(sc) do { \ 203 mtx_assert(&(sc)->transmit_lock, MA_NOTOWNED); \ 204 mtx_lock(&(sc)->receive_lock); \ 205 } while (0) 206 207 #define TSEC_RECEIVE_UNLOCK(sc) mtx_unlock(&(sc)->receive_lock) 208 #define TSEC_RECEIVE_LOCK_ASSERT(sc) mtx_assert(&(sc)->receive_lock, MA_OWNED) 209 210 /* Lock for interrupts coalescing */ 211 #define TSEC_IC_LOCK(sc) do { \ 212 mtx_assert(&(sc)->ic_lock, MA_NOTOWNED); \ 213 mtx_lock(&(sc)->ic_lock); \ 214 } while (0) 215 216 #define TSEC_IC_UNLOCK(sc) mtx_unlock(&(sc)->ic_lock) 217 #define TSEC_IC_LOCK_ASSERT(sc) mtx_assert(&(sc)->ic_lock, MA_OWNED) 218 219 /* Global tsec lock (with all locks) */ 220 #define TSEC_GLOBAL_LOCK(sc) do { \ 221 if ((mtx_owned(&(sc)->transmit_lock) ? 1 : 0) != \ 222 (mtx_owned(&(sc)->receive_lock) ? 1 : 0)) { \ 223 panic("tsec deadlock possibility detection!"); \ 224 } \ 225 mtx_lock(&(sc)->transmit_lock); \ 226 mtx_lock(&(sc)->receive_lock); \ 227 } while (0) 228 229 #define TSEC_GLOBAL_UNLOCK(sc) do { \ 230 TSEC_RECEIVE_UNLOCK(sc); \ 231 TSEC_TRANSMIT_UNLOCK(sc); \ 232 } while (0) 233 234 #define TSEC_GLOBAL_LOCK_ASSERT(sc) do { \ 235 TSEC_TRANSMIT_LOCK_ASSERT(sc); \ 236 TSEC_RECEIVE_LOCK_ASSERT(sc); \ 237 } while (0) 238 239 /* From global to {transmit,receive} */ 240 #define TSEC_GLOBAL_TO_TRANSMIT_LOCK(sc) do { \ 241 mtx_unlock(&(sc)->receive_lock);\ 242 } while (0) 243 244 #define TSEC_GLOBAL_TO_RECEIVE_LOCK(sc) do { \ 245 mtx_unlock(&(sc)->transmit_lock);\ 246 } while (0) 247 248 struct tsec_desc { 249 volatile uint16_t flags; /* descriptor flags */ 250 volatile uint16_t length; /* buffer length */ 251 volatile uint32_t bufptr; /* buffer pointer */ 252 }; 253 254 #define TSEC_READ_RETRY 10000 255 #define TSEC_READ_DELAY 100 256 257 /* Structures and defines for TCP/IP Off-load */ 258 struct tsec_tx_fcb { 259 volatile uint16_t flags; 260 volatile uint8_t l4_offset; 261 volatile uint8_t l3_offset; 262 volatile uint16_t ph_chsum; 263 volatile uint16_t vlan; 264 }; 265 266 struct tsec_rx_fcb { 267 volatile uint16_t flags; 268 volatile uint8_t rq_index; 269 volatile uint8_t protocol; 270 volatile uint16_t unused; 271 volatile uint16_t vlan; 272 }; 273 274 #define TSEC_CHECKSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) 275 276 #define TSEC_TX_FCB_IP4 TSEC_TX_FCB_L3_IS_IP 277 #define TSEC_TX_FCB_IP6 (TSEC_TX_FCB_L3_IS_IP | TSEC_TX_FCB_L3_IS_IP6) 278 279 #define TSEC_TX_FCB_TCP TSEC_TX_FCB_L4_IS_TCP_UDP 280 #define TSEC_TX_FCB_UDP (TSEC_TX_FCB_L4_IS_TCP_UDP | TSEC_TX_FCB_L4_IS_UDP) 281 282 #define TSEC_RX_FCB_IP_CSUM_CHECKED(flags) \ 283 ((flags & (TSEC_RX_FCB_IP_FOUND | TSEC_RX_FCB_IP6_FOUND | \ 284 TSEC_RX_FCB_IP_CSUM | TSEC_RX_FCB_PARSE_ERROR)) \ 285 == (TSEC_RX_FCB_IP_FOUND | TSEC_RX_FCB_IP_CSUM)) 286 287 #define TSEC_RX_FCB_TCP_UDP_CSUM_CHECKED(flags) \ 288 ((flags & (TSEC_RX_FCB_TCP_UDP_FOUND | TSEC_RX_FCB_TCP_UDP_CSUM \ 289 | TSEC_RX_FCB_PARSE_ERROR)) \ 290 == (TSEC_RX_FCB_TCP_UDP_FOUND | TSEC_RX_FCB_TCP_UDP_CSUM)) 291 292 /* Prototypes */ 293 extern devclass_t tsec_devclass; 294 295 int tsec_attach(struct tsec_softc *sc); 296 int tsec_detach(struct tsec_softc *sc); 297 298 void tsec_error_intr(void *arg); 299 void tsec_receive_intr(void *arg); 300 void tsec_transmit_intr(void *arg); 301 302 int tsec_miibus_readreg(device_t dev, int phy, int reg); 303 int tsec_miibus_writereg(device_t dev, int phy, int reg, int value); 304 void tsec_miibus_statchg(device_t dev); 305 int tsec_resume(device_t dev); /* XXX */ 306 int tsec_shutdown(device_t dev); 307 int tsec_suspend(device_t dev); /* XXX */ 308 309 void tsec_get_hwaddr(struct tsec_softc *sc, uint8_t *addr); 310 311 #endif /* _IF_TSEC_H */ 312