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freebsd-dev/sys/dev/patm/if_patmvar.h

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/*-
* 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 <harti@freebsd.org>
*
* $FreeBSD$
*
* 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_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);
/* enable the vcc */
void patm_load_vc(struct patm_softc *sc, struct patm_vcc *vcc, int reload);
/* 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;
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