/* * Copyright (c) 2003 * Fraunhofer Institute for Open Communication Systems (FhG Fokus). * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Author: Hartmut Brandt * * $FreeBSD$ * * Driver for IDT77252 (ABR) based cards like ProSum's. */ /* legal values are 0, 1, 2 and 8 */ #define PATM_VPI_BITS 2 #define PATM_CFG_VPI IDT_CFG_VP2 /* receive status queue size */ #define PATM_RSQ_SIZE 512 #define PATM_CFQ_RSQ_SIZE IDT_CFG_RXQ512 /* alignment for SQ memory */ #define PATM_SQ_ALIGNMENT 8192 #define PATM_PROATM_NAME_OFFSET 060 #define PATM_PROATM_NAME "PROATM" #define PATM_PROATM_MAC_OFFSET 044 #define PATM_IDT_MAC_OFFSET 0154 /* maximum number of packets on UBR queue */ #define PATM_DLFT_MAXQ 1000 /* maximum number of packets on other queues. This should depend on the * traffic contract. */ #define PATM_TX_IFQLEN 100 /* * Maximum number of DMA maps we allocate. This is the minimum that can be * set larger via a sysctl. * Starting number of DMA maps. * Step for growing. */ #define PATM_CFG_TXMAPS_MAX 1024 #define PATM_CFG_TXMAPS_INIT 128 #define PATM_CFG_TXMAPS_STEP 128 /* percents of TST slots to keep for non-CBR traffic */ #define PATM_TST_RESERVE 2 /* * Structure to hold TX DMA maps */ struct patm_txmap { SLIST_ENTRY(patm_txmap) link; bus_dmamap_t map; }; /* * Receive buffers. * * We manage our own external mbufs for small receive buffers for two reasons: * the card may consume a rather large number of buffers. Mapping each buffer * would consume a lot of iospace on sparc64. Also the card allows us to set * a 32-bit handle for identification of the buffers. On a 64-bit system this * requires us to use a mapping between buffers and handles. * * For large buffers we use mbuf clusters directly. We track these by using * an array of pointers (lbufs) to special structs and a free list of these * structs. * * For AAL0 cell we use FBQ2 and make the 1 cell long. */ /* * Define the small buffer chunk so that we have at least 16 byte free * at the end of the chunk and that there is an integral number of chunks * in a page. */ #define SMBUF_PAGE_SIZE 16384 /* 16k pages */ #define SMBUF_MAX_PAGES 64 /* maximum number of pages */ #define SMBUF_CHUNK_SIZE 256 /* 256 bytes per chunk */ #define SMBUF_CELLS 5 #define SMBUF_SIZE (SMBUF_CELLS * 48) #define SMBUF_THRESHOLD 9 /* 9/16 of queue size */ #define SMBUF_NI_THRESH 3 #define SMBUF_CI_THRESH 1 #define VMBUF_PAGE_SIZE 16384 /* 16k pages */ #define VMBUF_MAX_PAGES 16 /* maximum number of pages */ #define VMBUF_CHUNK_SIZE 64 /* 64 bytes per chunk */ #define VMBUF_CELLS 1 #define VMBUF_SIZE (VMBUF_CELLS * 48) #define VMBUF_THRESHOLD 15 /* 15/16 of size */ #define SMBUF_OFFSET (SMBUF_CHUNK_SIZE - 8 - SMBUF_SIZE) #define VMBUF_OFFSET 0 #define MBUF_SHANDLE 0x00000000 #define MBUF_LHANDLE 0x80000000 #define MBUF_VHANDLE 0x40000000 #define MBUF_HMASK 0x3fffffff /* * Large buffers * * The problem with these is the maximum count. When the card assembles * a AAL5 pdu it moves a buffer from the FBQ to the VC. This frees space * in the FBQ, put the buffer may pend on the card for an unlimited amount * of time (we don't idle connections). This means that the upper limit * on buffers on the card may be (no-of-open-vcs + FBQ_SIZE). Because * this is far too much, make this a tuneable. We could also make * this dynamic by allocating pages of several lbufs at once during run time. */ #define LMBUF_MAX (IDT_FBQ_SIZE * 2) #define LMBUF_CELLS (MCLBYTES / 48) /* 42 cells = 2048 byte */ #define LMBUF_SIZE (LMBUF_CELLS * 48) #define LMBUF_THRESHOLD 9 /* 9/16 of queue size */ #define LMBUF_OFFSET (MCLBYTES - LMBUF_SIZE) #define LMBUF_NI_THRESH 3 #define LMBUF_CI_THRESH 1 #define LMBUF_HANDLE 0x80000000 struct lmbuf { SLIST_ENTRY(lmbuf) link; /* free list link */ bus_dmamap_t map; /* DMA map */ u_int handle; /* this is the handle index */ struct mbuf *m; /* the current mbuf */ bus_addr_t phy; /* phy addr */ }; #define PATM_CID(SC, VPI, VCI) \ (((VPI) << (SC)->ifatm.mib.vci_bits) | (VCI)) /* * Internal driver statistics */ struct patm_stats { uint32_t raw_cells; uint32_t raw_no_vcc; uint32_t raw_no_buf; uint32_t tx_qfull; uint32_t tx_out_of_tbds; uint32_t tx_out_of_maps; uint32_t tx_load_err; }; /* * These are allocated as DMA able memory */ struct patm_scd { struct idt_tbd scq[IDT_SCQ_SIZE]; LIST_ENTRY(patm_scd) link; /* all active SCDs */ uint32_t sram; /* SRAM address */ bus_addr_t phy; /* physical address */ bus_dmamap_t map; /* DMA map */ u_int tail; /* next free entry for host */ int space; /* number of free entries (minus one) */ u_int slots; /* CBR slots allocated */ uint8_t tag; /* next tag for TSI */ uint8_t last_tag; /* last tag checked in interrupt */ uint8_t num_on_card; /* number of PDUs on tx queue */ uint8_t lacr; /* LogACR value */ uint8_t init_er; /* LogER value */ struct ifqueue q; /* queue of packets */ struct mbuf *on_card[IDT_TSQE_TAG_SPACE]; }; /* * Per-VCC data */ struct patm_vcc { struct atmio_vcc vcc; /* caller's parameters */ void *rxhand; /* NATM handle */ u_int vflags; /* open and other flags */ uint32_t ipackets; /* packets received */ uint32_t opackets; /* packets sent */ uint64_t ibytes; /* bytes received */ uint64_t obytes; /* bytes sent */ struct mbuf *chain; /* currently received chain */ struct mbuf *last; /* end of chain */ u_int cid; /* index */ u_int cps; /* last ABR cps */ struct patm_scd *scd; }; #define PATM_VCC_TX_OPEN 0x0001 #define PATM_VCC_RX_OPEN 0x0002 #define PATM_VCC_TX_CLOSING 0x0004 #define PATM_VCC_RX_CLOSING 0x0008 #define PATM_VCC_OPEN 0x000f /* all the above */ #define PATM_VCC_ASYNC 0x0010 #define PATM_RAW_CELL 0x0000 /* 53 byte cells */ #define PATM_RAW_NOHEC 0x0100 /* 52 byte cells */ #define PATM_RAW_CS 0x0200 /* 64 byte cell stream */ #define PATM_RAW_FORMAT 0x0300 /* format mask */ /* * Per adapter data */ struct patm_softc { struct ifatm ifatm; /* common ATM stuff */ struct mtx mtx; /* lock */ struct ifmedia media; /* media */ device_t dev; /* device */ struct resource * memres; /* memory resource */ bus_space_handle_t memh; /* handle */ bus_space_tag_t memt; /* ... and tag */ int irqid; /* resource id */ struct resource * irqres; /* resource */ void * ih; /* interrupt handle */ struct utopia utopia; /* phy state */ const struct idt_mmap *mmap; /* SRAM memory map */ u_int flags; /* see below */ u_int revision; /* chip revision */ /* DMAable status queue memory */ size_t sq_size; /* size of memory area */ bus_dma_tag_t sq_tag; /* DMA tag */ bus_dmamap_t sq_map; /* map */ bus_addr_t tsq_phy; /* phys addr. */ struct idt_tsqe *tsq; /* transmit status queue */ struct idt_tsqe *tsq_next; /* last processed entry */ struct idt_rsqe *rsq; /* receive status queue */ bus_addr_t rsq_phy; /* phys addr. */ u_int rsq_last; /* last processed entry */ struct idt_rawhnd *rawhnd; /* raw cell handle */ bus_addr_t rawhnd_phy; /* phys addr. */ /* TST */ u_int tst_state; /* active TST and others */ u_int tst_jump[2]; /* address of the jumps */ u_int tst_base[2]; /* base address of TST */ u_int *tst_soft; /* soft TST */ struct mtx tst_lock; struct callout tst_callout; u_int tst_free; /* free slots */ u_int tst_reserve; /* non-CBR reserve */ u_int bwrem; /* remaining bandwith */ /* sysctl support */ struct sysctl_ctx_list sysctl_ctx; struct sysctl_oid *sysctl_tree; /* EEPROM contents */ uint8_t eeprom[256]; /* large buffer mapping */ bus_dma_tag_t lbuf_tag; /* DMA tag */ u_int lbuf_max; /* maximum number */ struct lmbuf *lbufs; /* array for indexing */ SLIST_HEAD(,lmbuf) lbuf_free_list; /* free list */ /* small buffer handling */ bus_dma_tag_t sbuf_tag; /* DMA tag */ struct mbpool *sbuf_pool; /* pool */ struct mbpool *vbuf_pool; /* pool */ /* raw cell queue */ struct lmbuf *rawh; /* current header buf */ u_int rawi; /* cell index into buffer */ /* statistics */ struct patm_stats stats; /* statistics */ /* Vccs */ struct patm_vcc **vccs; /* channel pointer array */ u_int vccs_open; /* number of open channels */ uma_zone_t vcc_zone; struct cv vcc_cv; /* SCDs */ uint32_t scd_free; /* SRAM of first free SCD */ bus_dma_tag_t scd_tag; struct patm_scd *scd0; LIST_HEAD(, patm_scd) scd_list; /* list of all active SCDs */ /* Tx */ bus_dma_tag_t tx_tag; /* for transmission */ SLIST_HEAD(, patm_txmap) tx_maps_free; /* free maps */ u_int tx_nmaps; /* allocated maps */ u_int tx_maxmaps; /* maximum number */ struct uma_zone *tx_mapzone; /* zone for maps */ #ifdef PATM_DEBUG /* debugging */ u_int debug; #endif }; /* flags */ #define PATM_25M 0x0001 /* 25MBit card */ #define PATM_SBUFW 0x0002 /* warned */ #define PATM_VBUFW 0x0004 /* warned */ #define PATM_UNASS 0x0010 /* unassigned cells */ #define PATM_CLR 0x0007 /* clear on stop */ /* tst - uses unused fields */ #define TST_BOTH 0x03000000 #define TST_CH0 0x01000000 #define TST_CH1 0x02000000 /* tst_state */ #define TST_ACT1 0x0001 /* active TST */ #define TST_PENDING 0x0002 /* need update */ #define TST_WAIT 0x0004 /* wait fo jump */ #define patm_printf(SC, ...) if_printf(&(SC)->ifatm.ifnet, __VA_ARGS__); #ifdef PATM_DEBUG /* * Debugging */ enum { DBG_ATTACH = 0x0001, /* attaching the card */ DBG_INTR = 0x0002, /* interrupts */ DBG_REG = 0x0004, /* register access */ DBG_SRAM = 0x0008, /* SRAM access */ DBG_PHY = 0x0010, /* PHY access */ DBG_IOCTL = 0x0020, /* ioctl */ DBG_FREEQ = 0x0040, /* free bufq supply */ DBG_VCC = 0x0080, /* open/close */ DBG_TX = 0x0100, /* transmission */ DBG_TST = 0x0200, /* TST */ DBG_ALL = 0xffff }; #define patm_debug(SC, FLAG, ...) do { \ if((SC)->debug & DBG_##FLAG) { \ if_printf(&(SC)->ifatm.ifnet, "%s: ", __func__); \ printf(__VA_ARGS__); \ printf("\n"); \ } \ } while (0) #else #define patm_debug(SC, FLAG, ...) do { } while (0) #endif /* start output */ void patm_start(struct ifnet *); /* ioctl handler */ int patm_ioctl(struct ifnet *, u_long, caddr_t); /* start the interface */ void patm_init(void *); /* start the interface with the lock held */ void patm_initialize(struct patm_softc *); /* stop the interface */ void patm_stop(struct patm_softc *); /* software reset of interface */ void patm_reset(struct patm_softc *); /* interrupt handler */ void patm_intr(void *); /* check RSQ */ void patm_intr_rsq(struct patm_softc *sc); /* close the given vcc for transmission */ void patm_tx_vcc_close(struct patm_softc *, struct patm_vcc *); /* close the given vcc for receive */ void patm_rx_vcc_close(struct patm_softc *, struct patm_vcc *); /* transmission side finally closed */ void patm_tx_vcc_closed(struct patm_softc *, struct patm_vcc *); /* receive side finally closed */ void patm_rx_vcc_closed(struct patm_softc *, struct patm_vcc *); /* vcc closed */ void patm_vcc_closed(struct patm_softc *, struct patm_vcc *); /* check if we can open this one */ int patm_tx_vcc_can_open(struct patm_softc *, struct patm_vcc *); /* check if we can open this one */ int patm_rx_vcc_can_open(struct patm_softc *, struct patm_vcc *); /* open it */ void patm_tx_vcc_open(struct patm_softc *, struct patm_vcc *); /* open it */ void patm_rx_vcc_open(struct patm_softc *, struct patm_vcc *); /* receive packet */ void patm_rx(struct patm_softc *, struct idt_rsqe *); /* packet transmitted */ void patm_tx(struct patm_softc *, u_int, u_int); /* VBR connection went idle */ void patm_tx_idle(struct patm_softc *, u_int); /* allocate an SCQ */ struct patm_scd *patm_scd_alloc(struct patm_softc *); /* free an SCD */ void patm_scd_free(struct patm_softc *sc, struct patm_scd *scd); /* setup SCD in SRAM */ void patm_scd_setup(struct patm_softc *sc, struct patm_scd *scd); /* setup TCT entry in SRAM */ void patm_tct_setup(struct patm_softc *, struct patm_scd *, struct patm_vcc *); /* free a large buffer */ void patm_lbuf_free(struct patm_softc *sc, struct lmbuf *b); /* Process the raw cell at the given address */ void patm_rx_raw(struct patm_softc *sc, u_char *cell); /* load a one segment DMA map */ void patm_load_callback(void *, bus_dma_segment_t *, int, int); /* network operation register access */ static __inline uint32_t patm_nor_read(struct patm_softc *sc, u_int reg) { uint32_t val; val = bus_space_read_4(sc->memt, sc->memh, reg); patm_debug(sc, REG, "reg(0x%x)=%04x", reg, val); return (val); } static __inline void patm_nor_write(struct patm_softc *sc, u_int reg, uint32_t val) { patm_debug(sc, REG, "reg(0x%x)=%04x", reg, val); bus_space_write_4(sc->memt, sc->memh, reg, val); } /* Execute command */ static __inline void patm_cmd_wait(struct patm_softc *sc) { while (patm_nor_read(sc, IDT_NOR_STAT) & IDT_STAT_CMDBZ) ; } static __inline void patm_cmd_exec(struct patm_softc *sc, uint32_t cmd) { patm_cmd_wait(sc); patm_nor_write(sc, IDT_NOR_CMD, cmd); } /* Read/write SRAM at the given word address. */ static __inline uint32_t patm_sram_read(struct patm_softc *sc, u_int addr) { uint32_t val; patm_cmd_exec(sc, IDT_MKCMD_RSRAM(addr)); patm_cmd_wait(sc); val = patm_nor_read(sc, IDT_NOR_D0); patm_debug(sc, SRAM, "read %04x=%08x", addr, val); return (val); } static __inline void patm_sram_write(struct patm_softc *sc, u_int addr, uint32_t val) { patm_debug(sc, SRAM, "write %04x=%08x", addr, val); patm_cmd_wait(sc); patm_nor_write(sc, IDT_NOR_D0, val); patm_cmd_exec(sc, IDT_MKCMD_WSRAM(addr, 0)); } static __inline void patm_sram_write4(struct patm_softc *sc, u_int addr, uint32_t v0, uint32_t v1, uint32_t v2, uint32_t v3) { patm_debug(sc, SRAM, "write %04x=%08x,%08x,%08x,%08x", addr, v0, v1, v2, v3); patm_cmd_wait(sc); patm_nor_write(sc, IDT_NOR_D0, v0); patm_nor_write(sc, IDT_NOR_D1, v1); patm_nor_write(sc, IDT_NOR_D2, v2); patm_nor_write(sc, IDT_NOR_D3, v3); patm_cmd_exec(sc, IDT_MKCMD_WSRAM(addr, 3)); } #define LEGAL_VPI(SC, VPI) \ (((VPI) & ~((1 << (SC)->ifatm.mib.vpi_bits) - 1)) == 0) #define LEGAL_VCI(SC, VCI) \ (((VCI) & ~((1 << (SC)->ifatm.mib.vci_bits) - 1)) == 0) extern const uint32_t patm_rtables155[]; extern const uint32_t patm_rtables25[]; extern const u_int patm_rtables_size; extern const u_int patm_rtables_ntab;