drivers/atm/firestream.h - arm/linux - Git at Google

 /* drivers/atm/firestream.h - FireStream 155 (MB86697) and
  *                            FireStream  50 (MB86695) device driver
  */

 /* Written & (C) 2000 by R.E.Wolff@BitWizard.nl
  * Copied snippets from zatm.c by Werner Almesberger, EPFL LRC/ICA
  * and ambassador.c Copyright (C) 1995-1999  Madge Networks Ltd
  */

 /*
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

   The GNU GPL is contained in /usr/doc/copyright/GPL on a Debian
   system and in the file COPYING in the Linux kernel source.
 */


 /***********************************************************************
  *                  first the defines for the chip.                    *
  ***********************************************************************/


 /********************* General chip parameters. ************************/

 #define FS_NR_FREE_POOLS   8
 #define FS_NR_RX_QUEUES    4


 /********************* queues and queue access macros ******************/


 /* A queue entry. */
 struct FS_QENTRY {
 	u32 cmd;
 	u32 p0, p1, p2;
 };


 /* A freepool entry. */
 struct FS_BPENTRY {
 	u32 flags;
 	u32 next;
 	u32 bsa;
 	u32 aal_bufsize;

 	/* The hardware doesn't look at this, but we need the SKB somewhere... */
 	struct sk_buff *skb;
 	struct freepool *fp;
 	struct fs_dev *dev;
 };


 #define STATUS_CODE(qe)  ((qe->cmd >> 22) & 0x3f)


 /* OFFSETS against the base of a QUEUE... */
 #define QSA     0x00
 #define QEA     0x04
 #define QRP     0x08
 #define QWP     0x0c
 #define QCNF    0x10   /* Only for Release queues! */
 /* Not for the transmit pending queue. */


 /* OFFSETS against the base of a FREE POOL... */
 #define FPCNF   0x00
 #define FPSA    0x04
 #define FPEA    0x08
 #define FPCNT   0x0c
 #define FPCTU   0x10

 #define Q_SA(b)     (b + QSA )
 #define Q_EA(b)     (b + QEA )
 #define Q_RP(b)     (b + QRP )
 #define Q_WP(b)     (b + QWP )
 #define Q_CNF(b)    (b + QCNF)

 #define FP_CNF(b)   (b + FPCNF)
 #define FP_SA(b)    (b + FPSA)
 #define FP_EA(b)    (b + FPEA)
 #define FP_CNT(b)   (b + FPCNT)
 #define FP_CTU(b)   (b + FPCTU)

 /* bits in a queue register. */
 #define Q_FULL      0x1
 #define Q_EMPTY     0x2
 #define Q_INCWRAP   0x4
 #define Q_ADDR_MASK 0xfffffff0

 /* bits in a FreePool config register */
 #define RBFP_RBS    (0x1 << 16)
 #define RBFP_RBSVAL (0x1 << 15)
 #define RBFP_CME    (0x1 << 12)
 #define RBFP_DLP    (0x1 << 11)
 #define RBFP_BFPWT  (0x1 <<  0)


 /* FireStream commands. */
 #define QE_CMD_NULL             (0x00 << 22)
 #define QE_CMD_REG_RD           (0x01 << 22)
 #define QE_CMD_REG_RDM          (0x02 << 22)
 #define QE_CMD_REG_WR           (0x03 << 22)
 #define QE_CMD_REG_WRM          (0x04 << 22)
 #define QE_CMD_CONFIG_TX        (0x05 << 22)
 #define QE_CMD_CONFIG_RX        (0x06 << 22)
 #define QE_CMD_PRP_RD           (0x07 << 22)
 #define QE_CMD_PRP_RDM          (0x2a << 22)
 #define QE_CMD_PRP_WR           (0x09 << 22)
 #define QE_CMD_PRP_WRM          (0x2b << 22)
 #define QE_CMD_RX_EN            (0x0a << 22)
 #define QE_CMD_RX_PURGE         (0x0b << 22)
 #define QE_CMD_RX_PURGE_INH     (0x0c << 22)
 #define QE_CMD_TX_EN            (0x0d << 22)
 #define QE_CMD_TX_PURGE         (0x0e << 22)
 #define QE_CMD_TX_PURGE_INH     (0x0f << 22)
 #define QE_CMD_RST_CG           (0x10 << 22)
 #define QE_CMD_SET_CG           (0x11 << 22)
 #define QE_CMD_RST_CLP          (0x12 << 22)
 #define QE_CMD_SET_CLP          (0x13 << 22)
 #define QE_CMD_OVERRIDE         (0x14 << 22)
 #define QE_CMD_ADD_BFP          (0x15 << 22)
 #define QE_CMD_DUMP_TX          (0x16 << 22)
 #define QE_CMD_DUMP_RX          (0x17 << 22)
 #define QE_CMD_LRAM_RD          (0x18 << 22)
 #define QE_CMD_LRAM_RDM         (0x28 << 22)
 #define QE_CMD_LRAM_WR          (0x19 << 22)
 #define QE_CMD_LRAM_WRM         (0x29 << 22)
 #define QE_CMD_LRAM_BSET        (0x1a << 22)
 #define QE_CMD_LRAM_BCLR        (0x1b << 22)
 #define QE_CMD_CONFIG_SEGM      (0x1c << 22)
 #define QE_CMD_READ_SEGM        (0x1d << 22)
 #define QE_CMD_CONFIG_ROUT      (0x1e << 22)
 #define QE_CMD_READ_ROUT        (0x1f << 22)
 #define QE_CMD_CONFIG_TM        (0x20 << 22)
 #define QE_CMD_READ_TM          (0x21 << 22)
 #define QE_CMD_CONFIG_TXBM      (0x22 << 22)
 #define QE_CMD_READ_TXBM        (0x23 << 22)
 #define QE_CMD_CONFIG_RXBM      (0x24 << 22)
 #define QE_CMD_READ_RXBM        (0x25 << 22)
 #define QE_CMD_CONFIG_REAS      (0x26 << 22)
 #define QE_CMD_READ_REAS        (0x27 << 22)

 #define QE_TRANSMIT_DE          (0x0 << 30)
 #define QE_CMD_LINKED           (0x1 << 30)
 #define QE_CMD_IMM              (0x2 << 30)
 #define QE_CMD_IMM_INQ          (0x3 << 30)

 #define TD_EPI                  (0x1 << 27)
 #define TD_COMMAND              (0x1 << 28)

 #define TD_DATA                 (0x0 << 29)
 #define TD_RM_CELL              (0x1 << 29)
 #define TD_OAM_CELL             (0x2 << 29)
 #define TD_OAM_CELL_SEGMENT     (0x3 << 29)

 #define TD_BPI                  (0x1 << 20)

 #define FP_FLAGS_EPI            (0x1 << 27)


 #define TX_PQ(i)  (0x00  + (i) * 0x10)
 #define TXB_RQ    (0x20)
 #define ST_Q      (0x48)
 #define RXB_FP(i) (0x90  + (i) * 0x14)
 #define RXB_RQ(i) (0x134 + (i) * 0x14)


 #define TXQ_HP 0
 #define TXQ_LP 1

 /* Phew. You don't want to know how many revisions these simple queue
  * address macros went through before I got them nice and compact as
  * they are now. -- REW
  */


 /* And now for something completely different:
  * The rest of the registers... */


 #define CMDR0 0x34
 #define CMDR1 0x38
 #define CMDR2 0x3c
 #define CMDR3 0x40


 #define SARMODE0     0x5c

 #define SARMODE0_TXVCS_0    (0x0 << 0)
 #define SARMODE0_TXVCS_1k   (0x1 << 0)
 #define SARMODE0_TXVCS_2k   (0x2 << 0)
 #define SARMODE0_TXVCS_4k   (0x3 << 0)
 #define SARMODE0_TXVCS_8k   (0x4 << 0)
 #define SARMODE0_TXVCS_16k  (0x5 << 0)
 #define SARMODE0_TXVCS_32k  (0x6 << 0)
 #define SARMODE0_TXVCS_64k  (0x7 << 0)
 #define SARMODE0_TXVCS_32   (0x8 << 0)

 #define SARMODE0_ABRVCS_0   (0x0 << 4)
 #define SARMODE0_ABRVCS_512 (0x1 << 4)
 #define SARMODE0_ABRVCS_1k  (0x2 << 4)
 #define SARMODE0_ABRVCS_2k  (0x3 << 4)
 #define SARMODE0_ABRVCS_4k  (0x4 << 4)
 #define SARMODE0_ABRVCS_8k  (0x5 << 4)
 #define SARMODE0_ABRVCS_16k (0x6 << 4)
 #define SARMODE0_ABRVCS_32k (0x7 << 4)
 #define SARMODE0_ABRVCS_32  (0x9 << 4) /* The others are "8", this one really has to
 					  be 9. Tell me you don't believe me. -- REW */

 #define SARMODE0_RXVCS_0    (0x0 << 8)
 #define SARMODE0_RXVCS_1k   (0x1 << 8)
 #define SARMODE0_RXVCS_2k   (0x2 << 8)
 #define SARMODE0_RXVCS_4k   (0x3 << 8)
 #define SARMODE0_RXVCS_8k   (0x4 << 8)
 #define SARMODE0_RXVCS_16k  (0x5 << 8)
 #define SARMODE0_RXVCS_32k  (0x6 << 8)
 #define SARMODE0_RXVCS_64k  (0x7 << 8)
 #define SARMODE0_RXVCS_32   (0x8 << 8)

 #define SARMODE0_CALSUP_1  (0x0 << 12)
 #define SARMODE0_CALSUP_2  (0x1 << 12)
 #define SARMODE0_CALSUP_3  (0x2 << 12)
 #define SARMODE0_CALSUP_4  (0x3 << 12)

 #define SARMODE0_PRPWT_FS50_0  (0x0 << 14)
 #define SARMODE0_PRPWT_FS50_2  (0x1 << 14)
 #define SARMODE0_PRPWT_FS50_5  (0x2 << 14)
 #define SARMODE0_PRPWT_FS50_11 (0x3 << 14)

 #define SARMODE0_PRPWT_FS155_0 (0x0 << 14)
 #define SARMODE0_PRPWT_FS155_1 (0x1 << 14)
 #define SARMODE0_PRPWT_FS155_2 (0x2 << 14)
 #define SARMODE0_PRPWT_FS155_3 (0x3 << 14)

 #define SARMODE0_SRTS0     (0x1 << 23)
 #define SARMODE0_SRTS1     (0x1 << 24)

 #define SARMODE0_RUN       (0x1 << 25)

 #define SARMODE0_UNLOCK    (0x1 << 26)
 #define SARMODE0_CWRE      (0x1 << 27)


 #define SARMODE0_INTMODE_READCLEAR          (0x0 << 28)
 #define SARMODE0_INTMODE_READNOCLEAR        (0x1 << 28)
 #define SARMODE0_INTMODE_READNOCLEARINHIBIT (0x2 << 28)
 #define SARMODE0_INTMODE_READCLEARINHIBIT   (0x3 << 28)  /* Tell me you don't believe me. */

 #define SARMODE0_GINT      (0x1 << 30)
 #define SARMODE0_SHADEN    (0x1 << 31)


 #define SARMODE1     0x60


 #define SARMODE1_TRTL_SHIFT 0   /* Program to 0 */
 #define SARMODE1_RRTL_SHIFT 4   /* Program to 0 */

 #define SARMODE1_TAGM       (0x1 <<  8)  /* Program to 0 */

 #define SARMODE1_HECM0      (0x1 <<  9)
 #define SARMODE1_HECM1      (0x1 << 10)
 #define SARMODE1_HECM2      (0x1 << 11)

 #define SARMODE1_GFCE       (0x1 << 14)
 #define SARMODE1_GFCR       (0x1 << 15)
 #define SARMODE1_PMS        (0x1 << 18)
 #define SARMODE1_GPRI       (0x1 << 19)
 #define SARMODE1_GPAS       (0x1 << 20)
 #define SARMODE1_GVAS       (0x1 << 21)
 #define SARMODE1_GNAM       (0x1 << 22)
 #define SARMODE1_GPLEN      (0x1 << 23)
 #define SARMODE1_DUMPE      (0x1 << 24)
 #define SARMODE1_OAMCRC     (0x1 << 25)
 #define SARMODE1_DCOAM      (0x1 << 26)
 #define SARMODE1_DCRM       (0x1 << 27)
 #define SARMODE1_TSTLP      (0x1 << 28)
 #define SARMODE1_DEFHEC     (0x1 << 29)


 #define ISR      0x64
 #define IUSR     0x68
 #define IMR      0x6c

 #define ISR_LPCO          (0x1 <<  0)
 #define ISR_DPCO          (0x1 <<  1)
 #define ISR_RBRQ0_W       (0x1 <<  2)
 #define ISR_RBRQ1_W       (0x1 <<  3)
 #define ISR_RBRQ2_W       (0x1 <<  4)
 #define ISR_RBRQ3_W       (0x1 <<  5)
 #define ISR_RBRQ0_NF      (0x1 <<  6)
 #define ISR_RBRQ1_NF      (0x1 <<  7)
 #define ISR_RBRQ2_NF      (0x1 <<  8)
 #define ISR_RBRQ3_NF      (0x1 <<  9)
 #define ISR_BFP_SC        (0x1 << 10)
 #define ISR_INIT          (0x1 << 11)
 #define ISR_INIT_ERR      (0x1 << 12) /* Documented as "reserved" */
 #define ISR_USCEO         (0x1 << 13)
 #define ISR_UPEC0         (0x1 << 14)
 #define ISR_VPFCO         (0x1 << 15)
 #define ISR_CRCCO         (0x1 << 16)
 #define ISR_HECO          (0x1 << 17)
 #define ISR_TBRQ_W        (0x1 << 18)
 #define ISR_TBRQ_NF       (0x1 << 19)
 #define ISR_CTPQ_E        (0x1 << 20)
 #define ISR_GFC_C0        (0x1 << 21)
 #define ISR_PCI_FTL       (0x1 << 22)
 #define ISR_CSQ_W         (0x1 << 23)
 #define ISR_CSQ_NF        (0x1 << 24)
 #define ISR_EXT_INT       (0x1 << 25)
 #define ISR_RXDMA_S       (0x1 << 26)


 #define TMCONF 0x78
 /* Bits? */


 #define CALPRESCALE 0x7c
 /* Bits? */

 #define CELLOSCONF 0x84
 #define CELLOSCONF_COTS   (0x1 << 28)
 #define CELLOSCONF_CEN    (0x1 << 27)
 #define CELLOSCONF_SC8    (0x3 << 24)
 #define CELLOSCONF_SC4    (0x2 << 24)
 #define CELLOSCONF_SC2    (0x1 << 24)
 #define CELLOSCONF_SC1    (0x0 << 24)

 #define CELLOSCONF_COBS   (0x1 << 16)
 #define CELLOSCONF_COPK   (0x1 <<  8)
 #define CELLOSCONF_COST   (0x1 <<  0)
 /* Bits? */

 #define RAS0 0x1bc
 #define RAS0_DCD_XHLT (0x1 << 31)

 #define RAS0_VPSEL    (0x1 << 16)
 #define RAS0_VCSEL    (0x1 <<  0)

 #define RAS1 0x1c0
 #define RAS1_UTREG    (0x1 << 5)


 #define DMAMR 0x1cc
 #define DMAMR_TX_MODE_FULL (0x0 << 0)
 #define DMAMR_TX_MODE_PART (0x1 << 0)
 #define DMAMR_TX_MODE_NONE (0x2 << 0) /* And 3 */


 #define RAS2 0x280

 #define RAS2_NNI  (0x1 << 0)
 #define RAS2_USEL (0x1 << 1)
 #define RAS2_UBS  (0x1 << 2)


 struct fs_transmit_config {
 	u32 flags;
 	u32 atm_hdr;
 	u32 TMC[4];
 	u32 spec;
 	u32 rtag[3];
 };

 #define TC_FLAGS_AAL5      (0x0 << 29)
 #define TC_FLAGS_TRANSPARENT_PAYLOAD (0x1 << 29)
 #define TC_FLAGS_TRANSPARENT_CELL    (0x2 << 29)
 #define TC_FLAGS_STREAMING (0x1 << 28)
 #define TC_FLAGS_PACKET    (0x0)
 #define TC_FLAGS_TYPE_ABR  (0x0 << 22)
 #define TC_FLAGS_TYPE_CBR  (0x1 << 22)
 #define TC_FLAGS_TYPE_VBR  (0x2 << 22)
 #define TC_FLAGS_TYPE_UBR  (0x3 << 22)
 #define TC_FLAGS_CAL0      (0x0 << 20)
 #define TC_FLAGS_CAL1      (0x1 << 20)
 #define TC_FLAGS_CAL2      (0x2 << 20)
 #define TC_FLAGS_CAL3      (0x3 << 20)


 #define RC_FLAGS_NAM        (0x1 << 13)
 #define RC_FLAGS_RXBM_PSB   (0x0 << 14)
 #define RC_FLAGS_RXBM_CIF   (0x1 << 14)
 #define RC_FLAGS_RXBM_PMB   (0x2 << 14)
 #define RC_FLAGS_RXBM_STR   (0x4 << 14)
 #define RC_FLAGS_RXBM_SAF   (0x6 << 14)
 #define RC_FLAGS_RXBM_POS   (0x6 << 14)
 #define RC_FLAGS_BFPS       (0x1 << 17)

 #define RC_FLAGS_BFPS_BFP   (0x1 << 17)

 #define RC_FLAGS_BFPS_BFP0  (0x0 << 17)
 #define RC_FLAGS_BFPS_BFP1  (0x1 << 17)
 #define RC_FLAGS_BFPS_BFP2  (0x2 << 17)
 #define RC_FLAGS_BFPS_BFP3  (0x3 << 17)
 #define RC_FLAGS_BFPS_BFP4  (0x4 << 17)
 #define RC_FLAGS_BFPS_BFP5  (0x5 << 17)
 #define RC_FLAGS_BFPS_BFP6  (0x6 << 17)
 #define RC_FLAGS_BFPS_BFP7  (0x7 << 17)
 #define RC_FLAGS_BFPS_BFP01 (0x8 << 17)
 #define RC_FLAGS_BFPS_BFP23 (0x9 << 17)
 #define RC_FLAGS_BFPS_BFP45 (0xa << 17)
 #define RC_FLAGS_BFPS_BFP67 (0xb << 17)
 #define RC_FLAGS_BFPS_BFP07 (0xc << 17)
 #define RC_FLAGS_BFPS_BFP27 (0xd << 17)
 #define RC_FLAGS_BFPS_BFP47 (0xe << 17)

 #define RC_FLAGS_BFPP       (0x1 << 21)
 #define RC_FLAGS_TEVC       (0x1 << 22)
 #define RC_FLAGS_TEP        (0x1 << 23)
 #define RC_FLAGS_AAL5       (0x0 << 24)
 #define RC_FLAGS_TRANSP     (0x1 << 24)
 #define RC_FLAGS_TRANSC     (0x2 << 24)
 #define RC_FLAGS_ML         (0x1 << 27)
 #define RC_FLAGS_TRBRM      (0x1 << 28)
 #define RC_FLAGS_PRI        (0x1 << 29)
 #define RC_FLAGS_HOAM       (0x1 << 30)
 #define RC_FLAGS_CRC10      (0x1 << 31)


 #define RAC 0x1c8
 #define RAM 0x1c4


 /************************************************************************
  *         Then the datastructures that the DRIVER uses.                *
  ************************************************************************/

 #define TXQ_NENTRIES  32
 #define RXRQ_NENTRIES 1024


 struct fs_vcc {
 	int channo;
 	wait_queue_head_t close_wait;
 	struct sk_buff *last_skb;
 };


 struct queue {
 	struct FS_QENTRY *sa, *ea;
 	int offset;
 };

 struct freepool {
 	int offset;
 	int bufsize;
 	int nr_buffers;
 	int n;
 };


 struct fs_dev {
 	struct fs_dev *next;		/* other FS devices */
 	int flags;

 	unsigned char irq;		/* IRQ */
 	struct pci_dev *pci_dev;	/* PCI stuff */
 	struct atm_dev *atm_dev;
 	struct timer_list timer;

 	unsigned long hw_base;		/* mem base address */
 	void __iomem *base;             /* Mapping of base address */
 	int channo;
 	unsigned long channel_mask;

 	struct queue    hp_txq, lp_txq, tx_relq, st_q;
 	struct freepool rx_fp[FS_NR_FREE_POOLS];
 	struct queue    rx_rq[FS_NR_RX_QUEUES];

 	int nchannels;
 	struct atm_vcc **atm_vccs;
 	void *tx_inuse;
 	int ntxpckts;
 };


 /* Number of channesl that the FS50 supports. */
 #define FS50_CHANNEL_BITS  5
 #define FS50_NR_CHANNELS      (1 << FS50_CHANNEL_BITS)


 #define FS_DEV(atm_dev) ((struct fs_dev *) (atm_dev)->dev_data)
 #define FS_VCC(atm_vcc) ((struct fs_vcc *) (atm_vcc)->dev_data)


 #define FS_IS50  0x1
 #define FS_IS155 0x2

 #define IS_FS50(dev)  (dev->flags & FS_IS50)
 #define IS_FS155(dev) (dev->flags & FS_IS155)

 /* Within limits this is user-configurable. */
 /* Note: Currently the sum (10 -> 1k channels) is hardcoded in the driver. */
 #define FS155_VPI_BITS 4
 #define FS155_VCI_BITS 6

 #define FS155_CHANNEL_BITS  (FS155_VPI_BITS + FS155_VCI_BITS)
 #define FS155_NR_CHANNELS   (1 << FS155_CHANNEL_BITS)
	/* drivers/atm/firestream.h - FireStream 155 (MB86697) and
	* FireStream 50 (MB86695) device driver
	*/

	/* Written & (C) 2000 by R.E.Wolff@BitWizard.nl
	* Copied snippets from zatm.c by Werner Almesberger, EPFL LRC/ICA
	* and ambassador.c Copyright (C) 1995-1999 Madge Networks Ltd
	*/

	/*
	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

	The GNU GPL is contained in /usr/doc/copyright/GPL on a Debian
	system and in the file COPYING in the Linux kernel source.
	*/


	/***********************************************************************
	* first the defines for the chip. *
	***********************************************************************/


	/******************* General chip parameters. **********************/

	#define FS_NR_FREE_POOLS 8
	#define FS_NR_RX_QUEUES 4


	/******************* queues and queue access macros ****************/


	/* A queue entry. */
	struct FS_QENTRY {
	u32 cmd;
	u32 p0, p1, p2;
	};


	/* A freepool entry. */
	struct FS_BPENTRY {
	u32 flags;
	u32 next;
	u32 bsa;
	u32 aal_bufsize;

	/* The hardware doesn't look at this, but we need the SKB somewhere... */
	struct sk_buff *skb;
	struct freepool *fp;
	struct fs_dev *dev;
	};


	#define STATUS_CODE(qe) ((qe->cmd >> 22) & 0x3f)


	/* OFFSETS against the base of a QUEUE... */
	#define QSA 0x00
	#define QEA 0x04
	#define QRP 0x08
	#define QWP 0x0c
	#define QCNF 0x10 /* Only for Release queues! */
	/* Not for the transmit pending queue. */


	/* OFFSETS against the base of a FREE POOL... */
	#define FPCNF 0x00
	#define FPSA 0x04
	#define FPEA 0x08
	#define FPCNT 0x0c
	#define FPCTU 0x10

	#define Q_SA(b) (b + QSA )
	#define Q_EA(b) (b + QEA )
	#define Q_RP(b) (b + QRP )
	#define Q_WP(b) (b + QWP )
	#define Q_CNF(b) (b + QCNF)

	#define FP_CNF(b) (b + FPCNF)
	#define FP_SA(b) (b + FPSA)
	#define FP_EA(b) (b + FPEA)
	#define FP_CNT(b) (b + FPCNT)
	#define FP_CTU(b) (b + FPCTU)

	/* bits in a queue register. */
	#define Q_FULL 0x1
	#define Q_EMPTY 0x2
	#define Q_INCWRAP 0x4
	#define Q_ADDR_MASK 0xfffffff0

	/* bits in a FreePool config register */
	#define RBFP_RBS (0x1 << 16)
	#define RBFP_RBSVAL (0x1 << 15)
	#define RBFP_CME (0x1 << 12)
	#define RBFP_DLP (0x1 << 11)
	#define RBFP_BFPWT (0x1 << 0)




	/* FireStream commands. */
	#define QE_CMD_NULL (0x00 << 22)
	#define QE_CMD_REG_RD (0x01 << 22)
	#define QE_CMD_REG_RDM (0x02 << 22)
	#define QE_CMD_REG_WR (0x03 << 22)
	#define QE_CMD_REG_WRM (0x04 << 22)
	#define QE_CMD_CONFIG_TX (0x05 << 22)
	#define QE_CMD_CONFIG_RX (0x06 << 22)
	#define QE_CMD_PRP_RD (0x07 << 22)
	#define QE_CMD_PRP_RDM (0x2a << 22)
	#define QE_CMD_PRP_WR (0x09 << 22)
	#define QE_CMD_PRP_WRM (0x2b << 22)
	#define QE_CMD_RX_EN (0x0a << 22)
	#define QE_CMD_RX_PURGE (0x0b << 22)
	#define QE_CMD_RX_PURGE_INH (0x0c << 22)
	#define QE_CMD_TX_EN (0x0d << 22)
	#define QE_CMD_TX_PURGE (0x0e << 22)
	#define QE_CMD_TX_PURGE_INH (0x0f << 22)
	#define QE_CMD_RST_CG (0x10 << 22)
	#define QE_CMD_SET_CG (0x11 << 22)
	#define QE_CMD_RST_CLP (0x12 << 22)
	#define QE_CMD_SET_CLP (0x13 << 22)
	#define QE_CMD_OVERRIDE (0x14 << 22)
	#define QE_CMD_ADD_BFP (0x15 << 22)
	#define QE_CMD_DUMP_TX (0x16 << 22)
	#define QE_CMD_DUMP_RX (0x17 << 22)
	#define QE_CMD_LRAM_RD (0x18 << 22)
	#define QE_CMD_LRAM_RDM (0x28 << 22)
	#define QE_CMD_LRAM_WR (0x19 << 22)
	#define QE_CMD_LRAM_WRM (0x29 << 22)
	#define QE_CMD_LRAM_BSET (0x1a << 22)
	#define QE_CMD_LRAM_BCLR (0x1b << 22)
	#define QE_CMD_CONFIG_SEGM (0x1c << 22)
	#define QE_CMD_READ_SEGM (0x1d << 22)
	#define QE_CMD_CONFIG_ROUT (0x1e << 22)
	#define QE_CMD_READ_ROUT (0x1f << 22)
	#define QE_CMD_CONFIG_TM (0x20 << 22)
	#define QE_CMD_READ_TM (0x21 << 22)
	#define QE_CMD_CONFIG_TXBM (0x22 << 22)
	#define QE_CMD_READ_TXBM (0x23 << 22)
	#define QE_CMD_CONFIG_RXBM (0x24 << 22)
	#define QE_CMD_READ_RXBM (0x25 << 22)
	#define QE_CMD_CONFIG_REAS (0x26 << 22)
	#define QE_CMD_READ_REAS (0x27 << 22)

	#define QE_TRANSMIT_DE (0x0 << 30)
	#define QE_CMD_LINKED (0x1 << 30)
	#define QE_CMD_IMM (0x2 << 30)
	#define QE_CMD_IMM_INQ (0x3 << 30)

	#define TD_EPI (0x1 << 27)
	#define TD_COMMAND (0x1 << 28)

	#define TD_DATA (0x0 << 29)
	#define TD_RM_CELL (0x1 << 29)
	#define TD_OAM_CELL (0x2 << 29)
	#define TD_OAM_CELL_SEGMENT (0x3 << 29)

	#define TD_BPI (0x1 << 20)

	#define FP_FLAGS_EPI (0x1 << 27)


	#define TX_PQ(i) (0x00 + (i) * 0x10)
	#define TXB_RQ (0x20)
	#define ST_Q (0x48)
	#define RXB_FP(i) (0x90 + (i) * 0x14)
	#define RXB_RQ(i) (0x134 + (i) * 0x14)


	#define TXQ_HP 0
	#define TXQ_LP 1

	/* Phew. You don't want to know how many revisions these simple queue
	* address macros went through before I got them nice and compact as
	* they are now. -- REW
	*/


	/* And now for something completely different:
	* The rest of the registers... */


	#define CMDR0 0x34
	#define CMDR1 0x38
	#define CMDR2 0x3c
	#define CMDR3 0x40


	#define SARMODE0 0x5c

	#define SARMODE0_TXVCS_0 (0x0 << 0)
	#define SARMODE0_TXVCS_1k (0x1 << 0)
	#define SARMODE0_TXVCS_2k (0x2 << 0)
	#define SARMODE0_TXVCS_4k (0x3 << 0)
	#define SARMODE0_TXVCS_8k (0x4 << 0)
	#define SARMODE0_TXVCS_16k (0x5 << 0)
	#define SARMODE0_TXVCS_32k (0x6 << 0)
	#define SARMODE0_TXVCS_64k (0x7 << 0)
	#define SARMODE0_TXVCS_32 (0x8 << 0)

	#define SARMODE0_ABRVCS_0 (0x0 << 4)
	#define SARMODE0_ABRVCS_512 (0x1 << 4)
	#define SARMODE0_ABRVCS_1k (0x2 << 4)
	#define SARMODE0_ABRVCS_2k (0x3 << 4)
	#define SARMODE0_ABRVCS_4k (0x4 << 4)
	#define SARMODE0_ABRVCS_8k (0x5 << 4)
	#define SARMODE0_ABRVCS_16k (0x6 << 4)
	#define SARMODE0_ABRVCS_32k (0x7 << 4)
	#define SARMODE0_ABRVCS_32 (0x9 << 4) /* The others are "8", this one really has to
	be 9. Tell me you don't believe me. -- REW */

	#define SARMODE0_RXVCS_0 (0x0 << 8)
	#define SARMODE0_RXVCS_1k (0x1 << 8)
	#define SARMODE0_RXVCS_2k (0x2 << 8)
	#define SARMODE0_RXVCS_4k (0x3 << 8)
	#define SARMODE0_RXVCS_8k (0x4 << 8)
	#define SARMODE0_RXVCS_16k (0x5 << 8)
	#define SARMODE0_RXVCS_32k (0x6 << 8)
	#define SARMODE0_RXVCS_64k (0x7 << 8)
	#define SARMODE0_RXVCS_32 (0x8 << 8)

	#define SARMODE0_CALSUP_1 (0x0 << 12)
	#define SARMODE0_CALSUP_2 (0x1 << 12)
	#define SARMODE0_CALSUP_3 (0x2 << 12)
	#define SARMODE0_CALSUP_4 (0x3 << 12)

	#define SARMODE0_PRPWT_FS50_0 (0x0 << 14)
	#define SARMODE0_PRPWT_FS50_2 (0x1 << 14)
	#define SARMODE0_PRPWT_FS50_5 (0x2 << 14)
	#define SARMODE0_PRPWT_FS50_11 (0x3 << 14)

	#define SARMODE0_PRPWT_FS155_0 (0x0 << 14)
	#define SARMODE0_PRPWT_FS155_1 (0x1 << 14)
	#define SARMODE0_PRPWT_FS155_2 (0x2 << 14)
	#define SARMODE0_PRPWT_FS155_3 (0x3 << 14)

	#define SARMODE0_SRTS0 (0x1 << 23)
	#define SARMODE0_SRTS1 (0x1 << 24)

	#define SARMODE0_RUN (0x1 << 25)

	#define SARMODE0_UNLOCK (0x1 << 26)
	#define SARMODE0_CWRE (0x1 << 27)


	#define SARMODE0_INTMODE_READCLEAR (0x0 << 28)
	#define SARMODE0_INTMODE_READNOCLEAR (0x1 << 28)
	#define SARMODE0_INTMODE_READNOCLEARINHIBIT (0x2 << 28)
	#define SARMODE0_INTMODE_READCLEARINHIBIT (0x3 << 28) /* Tell me you don't believe me. */

	#define SARMODE0_GINT (0x1 << 30)
	#define SARMODE0_SHADEN (0x1 << 31)


	#define SARMODE1 0x60


	#define SARMODE1_TRTL_SHIFT 0 /* Program to 0 */
	#define SARMODE1_RRTL_SHIFT 4 /* Program to 0 */

	#define SARMODE1_TAGM (0x1 << 8) /* Program to 0 */

	#define SARMODE1_HECM0 (0x1 << 9)
	#define SARMODE1_HECM1 (0x1 << 10)
	#define SARMODE1_HECM2 (0x1 << 11)

	#define SARMODE1_GFCE (0x1 << 14)
	#define SARMODE1_GFCR (0x1 << 15)
	#define SARMODE1_PMS (0x1 << 18)
	#define SARMODE1_GPRI (0x1 << 19)
	#define SARMODE1_GPAS (0x1 << 20)
	#define SARMODE1_GVAS (0x1 << 21)
	#define SARMODE1_GNAM (0x1 << 22)
	#define SARMODE1_GPLEN (0x1 << 23)
	#define SARMODE1_DUMPE (0x1 << 24)
	#define SARMODE1_OAMCRC (0x1 << 25)
	#define SARMODE1_DCOAM (0x1 << 26)
	#define SARMODE1_DCRM (0x1 << 27)
	#define SARMODE1_TSTLP (0x1 << 28)
	#define SARMODE1_DEFHEC (0x1 << 29)


	#define ISR 0x64
	#define IUSR 0x68
	#define IMR 0x6c

	#define ISR_LPCO (0x1 << 0)
	#define ISR_DPCO (0x1 << 1)
	#define ISR_RBRQ0_W (0x1 << 2)
	#define ISR_RBRQ1_W (0x1 << 3)
	#define ISR_RBRQ2_W (0x1 << 4)
	#define ISR_RBRQ3_W (0x1 << 5)
	#define ISR_RBRQ0_NF (0x1 << 6)
	#define ISR_RBRQ1_NF (0x1 << 7)
	#define ISR_RBRQ2_NF (0x1 << 8)
	#define ISR_RBRQ3_NF (0x1 << 9)
	#define ISR_BFP_SC (0x1 << 10)
	#define ISR_INIT (0x1 << 11)
	#define ISR_INIT_ERR (0x1 << 12) /* Documented as "reserved" */
	#define ISR_USCEO (0x1 << 13)
	#define ISR_UPEC0 (0x1 << 14)
	#define ISR_VPFCO (0x1 << 15)
	#define ISR_CRCCO (0x1 << 16)
	#define ISR_HECO (0x1 << 17)
	#define ISR_TBRQ_W (0x1 << 18)
	#define ISR_TBRQ_NF (0x1 << 19)
	#define ISR_CTPQ_E (0x1 << 20)
	#define ISR_GFC_C0 (0x1 << 21)
	#define ISR_PCI_FTL (0x1 << 22)
	#define ISR_CSQ_W (0x1 << 23)
	#define ISR_CSQ_NF (0x1 << 24)
	#define ISR_EXT_INT (0x1 << 25)
	#define ISR_RXDMA_S (0x1 << 26)


	#define TMCONF 0x78
	/* Bits? */


	#define CALPRESCALE 0x7c
	/* Bits? */

	#define CELLOSCONF 0x84
	#define CELLOSCONF_COTS (0x1 << 28)
	#define CELLOSCONF_CEN (0x1 << 27)
	#define CELLOSCONF_SC8 (0x3 << 24)
	#define CELLOSCONF_SC4 (0x2 << 24)
	#define CELLOSCONF_SC2 (0x1 << 24)
	#define CELLOSCONF_SC1 (0x0 << 24)

	#define CELLOSCONF_COBS (0x1 << 16)
	#define CELLOSCONF_COPK (0x1 << 8)
	#define CELLOSCONF_COST (0x1 << 0)
	/* Bits? */

	#define RAS0 0x1bc
	#define RAS0_DCD_XHLT (0x1 << 31)

	#define RAS0_VPSEL (0x1 << 16)
	#define RAS0_VCSEL (0x1 << 0)

	#define RAS1 0x1c0
	#define RAS1_UTREG (0x1 << 5)


	#define DMAMR 0x1cc
	#define DMAMR_TX_MODE_FULL (0x0 << 0)
	#define DMAMR_TX_MODE_PART (0x1 << 0)
	#define DMAMR_TX_MODE_NONE (0x2 << 0) /* And 3 */



	#define RAS2 0x280

	#define RAS2_NNI (0x1 << 0)
	#define RAS2_USEL (0x1 << 1)
	#define RAS2_UBS (0x1 << 2)



	struct fs_transmit_config {
	u32 flags;
	u32 atm_hdr;
	u32 TMC[4];
	u32 spec;
	u32 rtag[3];
	};

	#define TC_FLAGS_AAL5 (0x0 << 29)
	#define TC_FLAGS_TRANSPARENT_PAYLOAD (0x1 << 29)
	#define TC_FLAGS_TRANSPARENT_CELL (0x2 << 29)
	#define TC_FLAGS_STREAMING (0x1 << 28)
	#define TC_FLAGS_PACKET (0x0)
	#define TC_FLAGS_TYPE_ABR (0x0 << 22)
	#define TC_FLAGS_TYPE_CBR (0x1 << 22)
	#define TC_FLAGS_TYPE_VBR (0x2 << 22)
	#define TC_FLAGS_TYPE_UBR (0x3 << 22)
	#define TC_FLAGS_CAL0 (0x0 << 20)
	#define TC_FLAGS_CAL1 (0x1 << 20)
	#define TC_FLAGS_CAL2 (0x2 << 20)
	#define TC_FLAGS_CAL3 (0x3 << 20)


	#define RC_FLAGS_NAM (0x1 << 13)
	#define RC_FLAGS_RXBM_PSB (0x0 << 14)
	#define RC_FLAGS_RXBM_CIF (0x1 << 14)
	#define RC_FLAGS_RXBM_PMB (0x2 << 14)
	#define RC_FLAGS_RXBM_STR (0x4 << 14)
	#define RC_FLAGS_RXBM_SAF (0x6 << 14)
	#define RC_FLAGS_RXBM_POS (0x6 << 14)
	#define RC_FLAGS_BFPS (0x1 << 17)

	#define RC_FLAGS_BFPS_BFP (0x1 << 17)

	#define RC_FLAGS_BFPS_BFP0 (0x0 << 17)
	#define RC_FLAGS_BFPS_BFP1 (0x1 << 17)
	#define RC_FLAGS_BFPS_BFP2 (0x2 << 17)
	#define RC_FLAGS_BFPS_BFP3 (0x3 << 17)
	#define RC_FLAGS_BFPS_BFP4 (0x4 << 17)
	#define RC_FLAGS_BFPS_BFP5 (0x5 << 17)
	#define RC_FLAGS_BFPS_BFP6 (0x6 << 17)
	#define RC_FLAGS_BFPS_BFP7 (0x7 << 17)
	#define RC_FLAGS_BFPS_BFP01 (0x8 << 17)
	#define RC_FLAGS_BFPS_BFP23 (0x9 << 17)
	#define RC_FLAGS_BFPS_BFP45 (0xa << 17)
	#define RC_FLAGS_BFPS_BFP67 (0xb << 17)
	#define RC_FLAGS_BFPS_BFP07 (0xc << 17)
	#define RC_FLAGS_BFPS_BFP27 (0xd << 17)
	#define RC_FLAGS_BFPS_BFP47 (0xe << 17)

	#define RC_FLAGS_BFPP (0x1 << 21)
	#define RC_FLAGS_TEVC (0x1 << 22)
	#define RC_FLAGS_TEP (0x1 << 23)
	#define RC_FLAGS_AAL5 (0x0 << 24)
	#define RC_FLAGS_TRANSP (0x1 << 24)
	#define RC_FLAGS_TRANSC (0x2 << 24)
	#define RC_FLAGS_ML (0x1 << 27)
	#define RC_FLAGS_TRBRM (0x1 << 28)
	#define RC_FLAGS_PRI (0x1 << 29)
	#define RC_FLAGS_HOAM (0x1 << 30)
	#define RC_FLAGS_CRC10 (0x1 << 31)


	#define RAC 0x1c8
	#define RAM 0x1c4



	/************************************************************************
	* Then the datastructures that the DRIVER uses. *
	************************************************************************/

	#define TXQ_NENTRIES 32
	#define RXRQ_NENTRIES 1024


	struct fs_vcc {
	int channo;
	wait_queue_head_t close_wait;
	struct sk_buff *last_skb;
	};


	struct queue {
	struct FS_QENTRY sa, ea;
	int offset;
	};

	struct freepool {
	int offset;
	int bufsize;
	int nr_buffers;
	int n;
	};


	struct fs_dev {
	struct fs_dev next; / other FS devices */
	int flags;

	unsigned char irq; /* IRQ */
	struct pci_dev pci_dev; / PCI stuff */
	struct atm_dev *atm_dev;
	struct timer_list timer;

	unsigned long hw_base; /* mem base address */
	void __iomem base; / Mapping of base address */
	int channo;
	unsigned long channel_mask;

	struct queue hp_txq, lp_txq, tx_relq, st_q;
	struct freepool rx_fp[FS_NR_FREE_POOLS];
	struct queue rx_rq[FS_NR_RX_QUEUES];

	int nchannels;
	struct atm_vcc **atm_vccs;
	void *tx_inuse;
	int ntxpckts;
	};




	/* Number of channesl that the FS50 supports. */
	#define FS50_CHANNEL_BITS 5
	#define FS50_NR_CHANNELS (1 << FS50_CHANNEL_BITS)


	#define FS_DEV(atm_dev) ((struct fs_dev *) (atm_dev)->dev_data)
	#define FS_VCC(atm_vcc) ((struct fs_vcc *) (atm_vcc)->dev_data)


	#define FS_IS50 0x1
	#define FS_IS155 0x2

	#define IS_FS50(dev) (dev->flags & FS_IS50)
	#define IS_FS155(dev) (dev->flags & FS_IS155)

	/* Within limits this is user-configurable. */
	/* Note: Currently the sum (10 -> 1k channels) is hardcoded in the driver. */
	#define FS155_VPI_BITS 4
	#define FS155_VCI_BITS 6

	#define FS155_CHANNEL_BITS (FS155_VPI_BITS + FS155_VCI_BITS)
	#define FS155_NR_CHANNELS (1 << FS155_CHANNEL_BITS)