+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-/* drivers/atm/uPD98401.h - NEC uPD98401 (SAR) declarations */
-
-/* Written 1995 by Werner Almesberger, EPFL LRC */
-
-
-#ifndef DRIVERS_ATM_uPD98401_H
-#define DRIVERS_ATM_uPD98401_H
-
-
-#define MAX_CRAM_SIZE (1 << 18) /* 2^18 words */
-#define RAM_INCREMENT 1024 /* check in 4 kB increments */
-
-#define uPD98401_PORTS 0x24 /* probably more ? */
-
-
-/*
- * Commands
- */
-
-#define uPD98401_OPEN_CHAN 0x20000000 /* open channel */
-#define uPD98401_CHAN_ADDR 0x0003fff8 /* channel address */
-#define uPD98401_CHAN_ADDR_SHIFT 3
-#define uPD98401_CLOSE_CHAN 0x24000000 /* close channel */
-#define uPD98401_CHAN_RT 0x02000000 /* RX/TX (0 TX, 1 RX) */
-#define uPD98401_DEACT_CHAN 0x28000000 /* deactivate channel */
-#define uPD98401_TX_READY 0x30000000 /* TX ready */
-#define uPD98401_ADD_BAT 0x34000000 /* add batches */
-#define uPD98401_POOL 0x000f0000 /* pool number */
-#define uPD98401_POOL_SHIFT 16
-#define uPD98401_POOL_NUMBAT 0x0000ffff /* number of batches */
-#define uPD98401_NOP 0x3f000000 /* NOP */
-#define uPD98401_IND_ACC 0x00000000 /* Indirect Access */
-#define uPD98401_IA_RW 0x10000000 /* Read/Write (0 W, 1 R) */
-#define uPD98401_IA_B3 0x08000000 /* Byte select, 1 enable */
-#define uPD98401_IA_B2 0x04000000
-#define uPD98401_IA_B1 0x02000000
-#define uPD98401_IA_B0 0x01000000
-#define uPD98401_IA_BALL 0x0f000000 /* whole longword */
-#define uPD98401_IA_TGT 0x000c0000 /* Target */
-#define uPD98401_IA_TGT_SHIFT 18
-#define uPD98401_IA_TGT_CM 0 /* - Control Memory */
-#define uPD98401_IA_TGT_SAR 1 /* - uPD98401 registers */
-#define uPD98401_IA_TGT_PHY 3 /* - PHY device */
-#define uPD98401_IA_ADDR 0x0003ffff
-
-/*
- * Command Register Status
- */
-
-#define uPD98401_BUSY 0x80000000 /* SAR is busy */
-#define uPD98401_LOCKED 0x40000000 /* SAR is locked by other CPU */
-
-/*
- * Indications
- */
-
-/* Normal (AAL5) Receive Indication */
-#define uPD98401_AAL5_UINFO 0xffff0000 /* user-supplied information */
-#define uPD98401_AAL5_UINFO_SHIFT 16
-#define uPD98401_AAL5_SIZE 0x0000ffff /* PDU size (in _CELLS_ !!) */
-#define uPD98401_AAL5_CHAN 0x7fff0000 /* Channel number */
-#define uPD98401_AAL5_CHAN_SHIFT 16
-#define uPD98401_AAL5_ERR 0x00008000 /* Error indication */
-#define uPD98401_AAL5_CI 0x00004000 /* Congestion Indication */
-#define uPD98401_AAL5_CLP 0x00002000 /* CLP (>= 1 cell had CLP=1) */
-#define uPD98401_AAL5_ES 0x00000f00 /* Error Status */
-#define uPD98401_AAL5_ES_SHIFT 8
-#define uPD98401_AAL5_ES_NONE 0 /* No error */
-#define uPD98401_AAL5_ES_FREE 1 /* Receiver free buf underflow */
-#define uPD98401_AAL5_ES_FIFO 2 /* Receiver FIFO overrun */
-#define uPD98401_AAL5_ES_TOOBIG 3 /* Maximum length violation */
-#define uPD98401_AAL5_ES_CRC 4 /* CRC error */
-#define uPD98401_AAL5_ES_ABORT 5 /* User abort */
-#define uPD98401_AAL5_ES_LENGTH 6 /* Length violation */
-#define uPD98401_AAL5_ES_T1 7 /* T1 error (timeout) */
-#define uPD98401_AAL5_ES_DEACT 8 /* Deactivated with DEACT_CHAN */
-#define uPD98401_AAL5_POOL 0x0000001f /* Free buffer pool number */
-
-/* Raw Cell Indication */
-#define uPD98401_RAW_UINFO uPD98401_AAL5_UINFO
-#define uPD98401_RAW_UINFO_SHIFT uPD98401_AAL5_UINFO_SHIFT
-#define uPD98401_RAW_HEC 0x000000ff /* HEC */
-#define uPD98401_RAW_CHAN uPD98401_AAL5_CHAN
-#define uPD98401_RAW_CHAN_SHIFT uPD98401_AAL5_CHAN_SHIFT
-
-/* Transmit Indication */
-#define uPD98401_TXI_CONN 0x7fff0000 /* Connection Number */
-#define uPD98401_TXI_CONN_SHIFT 16
-#define uPD98401_TXI_ACTIVE 0x00008000 /* Channel remains active */
-#define uPD98401_TXI_PQP 0x00007fff /* Packet Queue Pointer */
-
-/*
- * Directly Addressable Registers
- */
-
-#define uPD98401_GMR 0x00 /* General Mode Register */
-#define uPD98401_GSR 0x01 /* General Status Register */
-#define uPD98401_IMR 0x02 /* Interrupt Mask Register */
-#define uPD98401_RQU 0x03 /* Receive Queue Underrun */
-#define uPD98401_RQA 0x04 /* Receive Queue Alert */
-#define uPD98401_ADDR 0x05 /* Last Burst Address */
-#define uPD98401_VER 0x06 /* Version Number */
-#define uPD98401_SWR 0x07 /* Software Reset */
-#define uPD98401_CMR 0x08 /* Command Register */
-#define uPD98401_CMR_L 0x09 /* Command Register and Lock/Unlock */
-#define uPD98401_CER 0x0a /* Command Extension Register */
-#define uPD98401_CER_L 0x0b /* Command Ext Reg and Lock/Unlock */
-
-#define uPD98401_MSH(n) (0x10+(n)) /* Mailbox n Start Address High */
-#define uPD98401_MSL(n) (0x14+(n)) /* Mailbox n Start Address High */
-#define uPD98401_MBA(n) (0x18+(n)) /* Mailbox n Bottom Address */
-#define uPD98401_MTA(n) (0x1c+(n)) /* Mailbox n Tail Address */
-#define uPD98401_MWA(n) (0x20+(n)) /* Mailbox n Write Address */
-
-/* GMR is at 0x00 */
-#define uPD98401_GMR_ONE 0x80000000 /* Must be set to one */
-#define uPD98401_GMR_SLM 0x40000000 /* Address mode (0 word, 1 byte) */
-#define uPD98401_GMR_CPE 0x00008000 /* Control Memory Parity Enable */
-#define uPD98401_GMR_LP 0x00004000 /* Loopback */
-#define uPD98401_GMR_WA 0x00002000 /* Early Bus Write Abort/RDY */
-#define uPD98401_GMR_RA 0x00001000 /* Early Read Abort/RDY */
-#define uPD98401_GMR_SZ 0x00000f00 /* Burst Size Enable */
-#define uPD98401_BURST16 0x00000800 /* 16-word burst */
-#define uPD98401_BURST8 0x00000400 /* 8-word burst */
-#define uPD98401_BURST4 0x00000200 /* 4-word burst */
-#define uPD98401_BURST2 0x00000100 /* 2-word burst */
-#define uPD98401_GMR_AD 0x00000080 /* Address (burst resolution) Disable */
-#define uPD98401_GMR_BO 0x00000040 /* Byte Order (0 little, 1 big) */
-#define uPD98401_GMR_PM 0x00000020 /* Bus Parity Mode (0 byte, 1 word)*/
-#define uPD98401_GMR_PC 0x00000010 /* Bus Parity Control (0even,1odd) */
-#define uPD98401_GMR_BPE 0x00000008 /* Bus Parity Enable */
-#define uPD98401_GMR_DR 0x00000004 /* Receive Drop Mode (0drop,1don't)*/
-#define uPD98401_GMR_SE 0x00000002 /* Shapers Enable */
-#define uPD98401_GMR_RE 0x00000001 /* Receiver Enable */
-
-/* GSR is at 0x01, IMR is at 0x02 */
-#define uPD98401_INT_PI 0x80000000 /* PHY interrupt */
-#define uPD98401_INT_RQA 0x40000000 /* Receive Queue Alert */
-#define uPD98401_INT_RQU 0x20000000 /* Receive Queue Underrun */
-#define uPD98401_INT_RD 0x10000000 /* Receiver Deactivated */
-#define uPD98401_INT_SPE 0x08000000 /* System Parity Error */
-#define uPD98401_INT_CPE 0x04000000 /* Control Memory Parity Error */
-#define uPD98401_INT_SBE 0x02000000 /* System Bus Error */
-#define uPD98401_INT_IND 0x01000000 /* Initialization Done */
-#define uPD98401_INT_RCR 0x0000ff00 /* Raw Cell Received */
-#define uPD98401_INT_RCR_SHIFT 8
-#define uPD98401_INT_MF 0x000000f0 /* Mailbox Full */
-#define uPD98401_INT_MF_SHIFT 4
-#define uPD98401_INT_MM 0x0000000f /* Mailbox Modified */
-
-/* VER is at 0x06 */
-#define uPD98401_MAJOR 0x0000ff00 /* Major revision */
-#define uPD98401_MAJOR_SHIFT 8
-#define uPD98401_MINOR 0x000000ff /* Minor revision */
-
-/*
- * Indirectly Addressable Registers
- */
-
-#define uPD98401_IM(n) (0x40000+(n)) /* Scheduler n I and M */
-#define uPD98401_X(n) (0x40010+(n)) /* Scheduler n X */
-#define uPD98401_Y(n) (0x40020+(n)) /* Scheduler n Y */
-#define uPD98401_PC(n) (0x40030+(n)) /* Scheduler n P, C, p and c */
-#define uPD98401_PS(n) (0x40040+(n)) /* Scheduler n priority and status */
-
-/* IM contents */
-#define uPD98401_IM_I 0xff000000 /* I */
-#define uPD98401_IM_I_SHIFT 24
-#define uPD98401_IM_M 0x00ffffff /* M */
-
-/* PC contents */
-#define uPD98401_PC_P 0xff000000 /* P */
-#define uPD98401_PC_P_SHIFT 24
-#define uPD98401_PC_C 0x00ff0000 /* C */
-#define uPD98401_PC_C_SHIFT 16
-#define uPD98401_PC_p 0x0000ff00 /* p */
-#define uPD98401_PC_p_SHIFT 8
-#define uPD98401_PC_c 0x000000ff /* c */
-
-/* PS contents */
-#define uPD98401_PS_PRIO 0xf0 /* Priority level (0 high, 15 low) */
-#define uPD98401_PS_PRIO_SHIFT 4
-#define uPD98401_PS_S 0x08 /* Scan - must be 0 (internal) */
-#define uPD98401_PS_R 0x04 /* Round Robin (internal) */
-#define uPD98401_PS_A 0x02 /* Active (internal) */
-#define uPD98401_PS_E 0x01 /* Enabled */
-
-#define uPD98401_TOS 0x40100 /* Top of Stack Control Memory Address */
-#define uPD98401_SMA 0x40200 /* Shapers Control Memory Start Address */
-#define uPD98401_PMA 0x40201 /* Receive Pool Control Memory Start Address */
-#define uPD98401_T1R 0x40300 /* T1 Register */
-#define uPD98401_VRR 0x40301 /* VPI/VCI Reduction Register/Recv. Shutdown */
-#define uPD98401_TSR 0x40302 /* Time-Stamp Register */
-
-/* VRR is at 0x40301 */
-#define uPD98401_VRR_SDM 0x80000000 /* Shutdown Mode */
-#define uPD98401_VRR_SHIFT 0x000f0000 /* VPI/VCI Shift */
-#define uPD98401_VRR_SHIFT_SHIFT 16
-#define uPD98401_VRR_MASK 0x0000ffff /* VPI/VCI mask */
-
-/*
- * TX packet descriptor
- */
-
-#define uPD98401_TXPD_SIZE 16 /* descriptor size (in bytes) */
-
-#define uPD98401_TXPD_V 0x80000000 /* Valid bit */
-#define uPD98401_TXPD_DP 0x40000000 /* Descriptor (1) or Pointer (0) */
-#define uPD98401_TXPD_SM 0x20000000 /* Single (1) or Multiple (0) */
-#define uPD98401_TXPD_CLPM 0x18000000 /* CLP mode */
-#define uPD98401_CLPM_0 0 /* 00 CLP = 0 */
-#define uPD98401_CLPM_1 3 /* 11 CLP = 1 */
-#define uPD98401_CLPM_LAST 1 /* 01 CLP unless last cell */
-#define uPD98401_TXPD_CLPM_SHIFT 27
-#define uPD98401_TXPD_PTI 0x07000000 /* PTI pattern */
-#define uPD98401_TXPD_PTI_SHIFT 24
-#define uPD98401_TXPD_GFC 0x00f00000 /* GFC pattern */
-#define uPD98401_TXPD_GFC_SHIFT 20
-#define uPD98401_TXPD_C10 0x00040000 /* insert CRC-10 */
-#define uPD98401_TXPD_AAL5 0x00020000 /* AAL5 processing */
-#define uPD98401_TXPD_MB 0x00010000 /* TX mailbox number */
-#define uPD98401_TXPD_UU 0x0000ff00 /* CPCS-UU */
-#define uPD98401_TXPD_UU_SHIFT 8
-#define uPD98401_TXPD_CPI 0x000000ff /* CPI */
-
-/*
- * TX buffer descriptor
- */
-
-#define uPD98401_TXBD_SIZE 8 /* descriptor size (in bytes) */
-
-#define uPD98401_TXBD_LAST 0x80000000 /* last buffer in packet */
-
-/*
- * TX VC table
- */
-
-/* 1st word has the same structure as in a TX packet descriptor */
-#define uPD98401_TXVC_L 0x80000000 /* last buffer */
-#define uPD98401_TXVC_SHP 0x0f000000 /* shaper number */
-#define uPD98401_TXVC_SHP_SHIFT 24
-#define uPD98401_TXVC_VPI 0x00ff0000 /* VPI */
-#define uPD98401_TXVC_VPI_SHIFT 16
-#define uPD98401_TXVC_VCI 0x0000ffff /* VCI */
-#define uPD98401_TXVC_QRP 6 /* Queue Read Pointer is in word 6 */
-
-/*
- * RX free buffer pools descriptor
- */
-
-#define uPD98401_RXFP_ALERT 0x70000000 /* low water mark */
-#define uPD98401_RXFP_ALERT_SHIFT 28
-#define uPD98401_RXFP_BFSZ 0x0f000000 /* buffer size, 64*2^n */
-#define uPD98401_RXFP_BFSZ_SHIFT 24
-#define uPD98401_RXFP_BTSZ 0x00ff0000 /* batch size, n+1 */
-#define uPD98401_RXFP_BTSZ_SHIFT 16
-#define uPD98401_RXFP_REMAIN 0x0000ffff /* remaining batches in pool */
-
-/*
- * RX VC table
- */
-
-#define uPD98401_RXVC_BTSZ 0xff000000 /* remaining free buffers in batch */
-#define uPD98401_RXVC_BTSZ_SHIFT 24
-#define uPD98401_RXVC_MB 0x00200000 /* RX mailbox number */
-#define uPD98401_RXVC_POOL 0x001f0000 /* free buffer pool number */
-#define uPD98401_RXVC_POOL_SHIFT 16
-#define uPD98401_RXVC_UINFO 0x0000ffff /* user-supplied information */
-#define uPD98401_RXVC_T1 0xffff0000 /* T1 timestamp */
-#define uPD98401_RXVC_T1_SHIFT 16
-#define uPD98401_RXVC_PR 0x00008000 /* Packet Reception, 1 if busy */
-#define uPD98401_RXVC_DR 0x00004000 /* FIFO Drop */
-#define uPD98401_RXVC_OD 0x00001000 /* Drop OAM cells */
-#define uPD98401_RXVC_AR 0x00000800 /* AAL5 or raw cell; 1 if AAL5 */
-#define uPD98401_RXVC_MAXSEG 0x000007ff /* max number of segments per PDU */
-#define uPD98401_RXVC_REM 0xfffe0000 /* remaining words in curr buffer */
-#define uPD98401_RXVC_REM_SHIFT 17
-#define uPD98401_RXVC_CLP 0x00010000 /* CLP received */
-#define uPD98401_RXVC_BFA 0x00008000 /* Buffer Assigned */
-#define uPD98401_RXVC_BTA 0x00004000 /* Batch Assigned */
-#define uPD98401_RXVC_CI 0x00002000 /* Congestion Indication */
-#define uPD98401_RXVC_DD 0x00001000 /* Dropping incoming cells */
-#define uPD98401_RXVC_DP 0x00000800 /* like PR ? */
-#define uPD98401_RXVC_CURSEG 0x000007ff /* Current Segment count */
-
-/*
- * RX lookup table
- */
-
-#define uPD98401_RXLT_ENBL 0x8000 /* Enable */
-
-#endif
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/* drivers/atm/zatm.c - ZeitNet ZN122x device driver */
-
-/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
-
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/pci.h>
-#include <linux/errno.h>
-#include <linux/atm.h>
-#include <linux/atmdev.h>
-#include <linux/sonet.h>
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/delay.h>
-#include <linux/uio.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/dma-mapping.h>
-#include <linux/atm_zatm.h>
-#include <linux/capability.h>
-#include <linux/bitops.h>
-#include <linux/wait.h>
-#include <linux/slab.h>
-#include <asm/byteorder.h>
-#include <asm/string.h>
-#include <asm/io.h>
-#include <linux/atomic.h>
-#include <linux/uaccess.h>
-#include <linux/nospec.h>
-
-#include "uPD98401.h"
-#include "uPD98402.h"
-#include "zeprom.h"
-#include "zatm.h"
-
-
-/*
- * TODO:
- *
- * Minor features
- * - support 64 kB SDUs (will have to use multibuffer batches then :-( )
- * - proper use of CDV, credit = max(1,CDVT*PCR)
- * - AAL0
- * - better receive timestamps
- * - OAM
- */
-
-#define ZATM_COPPER 1
-
-#if 0
-#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
-#else
-#define DPRINTK(format,args...)
-#endif
-
-#ifndef CONFIG_ATM_ZATM_DEBUG
-
-
-#define NULLCHECK(x)
-
-#define EVENT(s,a,b)
-
-
-static void event_dump(void)
-{
-}
-
-
-#else
-
-
-/*
- * NULL pointer checking
- */
-
-#define NULLCHECK(x) \
- if ((unsigned long) (x) < 0x30) printk(KERN_CRIT #x "==0x%x\n", (int) (x))
-
-/*
- * Very extensive activity logging. Greatly improves bug detection speed but
- * costs a few Mbps if enabled.
- */
-
-#define EV 64
-
-static const char *ev[EV];
-static unsigned long ev_a[EV],ev_b[EV];
-static int ec = 0;
-
-
-static void EVENT(const char *s,unsigned long a,unsigned long b)
-{
- ev[ec] = s;
- ev_a[ec] = a;
- ev_b[ec] = b;
- ec = (ec+1) % EV;
-}
-
-
-static void event_dump(void)
-{
- int n,i;
-
- printk(KERN_NOTICE "----- event dump follows -----\n");
- for (n = 0; n < EV; n++) {
- i = (ec+n) % EV;
- printk(KERN_NOTICE);
- printk(ev[i] ? ev[i] : "(null)",ev_a[i],ev_b[i]);
- }
- printk(KERN_NOTICE "----- event dump ends here -----\n");
-}
-
-
-#endif /* CONFIG_ATM_ZATM_DEBUG */
-
-
-#define RING_BUSY 1 /* indication from do_tx that PDU has to be
- backlogged */
-
-static struct atm_dev *zatm_boards = NULL;
-static unsigned long dummy[2] = {0,0};
-
-
-#define zin_n(r) inl(zatm_dev->base+r*4)
-#define zin(r) inl(zatm_dev->base+uPD98401_##r*4)
-#define zout(v,r) outl(v,zatm_dev->base+uPD98401_##r*4)
-#define zwait() do {} while (zin(CMR) & uPD98401_BUSY)
-
-/* RX0, RX1, TX0, TX1 */
-static const int mbx_entries[NR_MBX] = { 1024,1024,1024,1024 };
-static const int mbx_esize[NR_MBX] = { 16,16,4,4 }; /* entry size in bytes */
-
-#define MBX_SIZE(i) (mbx_entries[i]*mbx_esize[i])
-
-
-/*-------------------------------- utilities --------------------------------*/
-
-
-static void zpokel(struct zatm_dev *zatm_dev,u32 value,u32 addr)
-{
- zwait();
- zout(value,CER);
- zout(uPD98401_IND_ACC | uPD98401_IA_BALL |
- (uPD98401_IA_TGT_CM << uPD98401_IA_TGT_SHIFT) | addr,CMR);
-}
-
-
-static u32 zpeekl(struct zatm_dev *zatm_dev,u32 addr)
-{
- zwait();
- zout(uPD98401_IND_ACC | uPD98401_IA_BALL | uPD98401_IA_RW |
- (uPD98401_IA_TGT_CM << uPD98401_IA_TGT_SHIFT) | addr,CMR);
- zwait();
- return zin(CER);
-}
-
-
-/*------------------------------- free lists --------------------------------*/
-
-
-/*
- * Free buffer head structure:
- * [0] pointer to buffer (for SAR)
- * [1] buffer descr link pointer (for SAR)
- * [2] back pointer to skb (for poll_rx)
- * [3] data
- * ...
- */
-
-struct rx_buffer_head {
- u32 buffer; /* pointer to buffer (for SAR) */
- u32 link; /* buffer descriptor link pointer (for SAR) */
- struct sk_buff *skb; /* back pointer to skb (for poll_rx) */
-};
-
-
-static void refill_pool(struct atm_dev *dev,int pool)
-{
- struct zatm_dev *zatm_dev;
- struct sk_buff *skb;
- struct rx_buffer_head *first;
- unsigned long flags;
- int align,offset,free,count,size;
-
- EVENT("refill_pool\n",0,0);
- zatm_dev = ZATM_DEV(dev);
- size = (64 << (pool <= ZATM_AAL5_POOL_BASE ? 0 :
- pool-ZATM_AAL5_POOL_BASE))+sizeof(struct rx_buffer_head);
- if (size < PAGE_SIZE) {
- align = 32; /* for 32 byte alignment */
- offset = sizeof(struct rx_buffer_head);
- }
- else {
- align = 4096;
- offset = zatm_dev->pool_info[pool].offset+
- sizeof(struct rx_buffer_head);
- }
- size += align;
- spin_lock_irqsave(&zatm_dev->lock, flags);
- free = zpeekl(zatm_dev,zatm_dev->pool_base+2*pool) &
- uPD98401_RXFP_REMAIN;
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- if (free >= zatm_dev->pool_info[pool].low_water) return;
- EVENT("starting ... POOL: 0x%x, 0x%x\n",
- zpeekl(zatm_dev,zatm_dev->pool_base+2*pool),
- zpeekl(zatm_dev,zatm_dev->pool_base+2*pool+1));
- EVENT("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
- count = 0;
- first = NULL;
- while (free < zatm_dev->pool_info[pool].high_water) {
- struct rx_buffer_head *head;
-
- skb = alloc_skb(size,GFP_ATOMIC);
- if (!skb) {
- printk(KERN_WARNING DEV_LABEL "(Itf %d): got no new "
- "skb (%d) with %d free\n",dev->number,size,free);
- break;
- }
- skb_reserve(skb,(unsigned char *) ((((unsigned long) skb->data+
- align+offset-1) & ~(unsigned long) (align-1))-offset)-
- skb->data);
- head = (struct rx_buffer_head *) skb->data;
- skb_reserve(skb,sizeof(struct rx_buffer_head));
- if (!first) first = head;
- count++;
- head->buffer = virt_to_bus(skb->data);
- head->link = 0;
- head->skb = skb;
- EVENT("enq skb 0x%08lx/0x%08lx\n",(unsigned long) skb,
- (unsigned long) head);
- spin_lock_irqsave(&zatm_dev->lock, flags);
- if (zatm_dev->last_free[pool])
- ((struct rx_buffer_head *) (zatm_dev->last_free[pool]->
- data))[-1].link = virt_to_bus(head);
- zatm_dev->last_free[pool] = skb;
- skb_queue_tail(&zatm_dev->pool[pool],skb);
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- free++;
- }
- if (first) {
- spin_lock_irqsave(&zatm_dev->lock, flags);
- zwait();
- zout(virt_to_bus(first),CER);
- zout(uPD98401_ADD_BAT | (pool << uPD98401_POOL_SHIFT) | count,
- CMR);
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- EVENT ("POOL: 0x%x, 0x%x\n",
- zpeekl(zatm_dev,zatm_dev->pool_base+2*pool),
- zpeekl(zatm_dev,zatm_dev->pool_base+2*pool+1));
- EVENT("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
- }
-}
-
-
-static void drain_free(struct atm_dev *dev,int pool)
-{
- skb_queue_purge(&ZATM_DEV(dev)->pool[pool]);
-}
-
-
-static int pool_index(int max_pdu)
-{
- int i;
-
- if (max_pdu % ATM_CELL_PAYLOAD)
- printk(KERN_ERR DEV_LABEL ": driver error in pool_index: "
- "max_pdu is %d\n",max_pdu);
- if (max_pdu > 65536) return -1;
- for (i = 0; (64 << i) < max_pdu; i++);
- return i+ZATM_AAL5_POOL_BASE;
-}
-
-
-/* use_pool isn't reentrant */
-
-
-static void use_pool(struct atm_dev *dev,int pool)
-{
- struct zatm_dev *zatm_dev;
- unsigned long flags;
- int size;
-
- zatm_dev = ZATM_DEV(dev);
- if (!(zatm_dev->pool_info[pool].ref_count++)) {
- skb_queue_head_init(&zatm_dev->pool[pool]);
- size = pool-ZATM_AAL5_POOL_BASE;
- if (size < 0) size = 0; /* 64B... */
- else if (size > 10) size = 10; /* ... 64kB */
- spin_lock_irqsave(&zatm_dev->lock, flags);
- zpokel(zatm_dev,((zatm_dev->pool_info[pool].low_water/4) <<
- uPD98401_RXFP_ALERT_SHIFT) |
- (1 << uPD98401_RXFP_BTSZ_SHIFT) |
- (size << uPD98401_RXFP_BFSZ_SHIFT),
- zatm_dev->pool_base+pool*2);
- zpokel(zatm_dev,(unsigned long) dummy,zatm_dev->pool_base+
- pool*2+1);
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- zatm_dev->last_free[pool] = NULL;
- refill_pool(dev,pool);
- }
- DPRINTK("pool %d: %d\n",pool,zatm_dev->pool_info[pool].ref_count);
-}
-
-
-static void unuse_pool(struct atm_dev *dev,int pool)
-{
- if (!(--ZATM_DEV(dev)->pool_info[pool].ref_count))
- drain_free(dev,pool);
-}
-
-/*----------------------------------- RX ------------------------------------*/
-
-
-#if 0
-static void exception(struct atm_vcc *vcc)
-{
- static int count = 0;
- struct zatm_dev *zatm_dev = ZATM_DEV(vcc->dev);
- struct zatm_vcc *zatm_vcc = ZATM_VCC(vcc);
- unsigned long *qrp;
- int i;
-
- if (count++ > 2) return;
- for (i = 0; i < 8; i++)
- printk("TX%d: 0x%08lx\n",i,
- zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+i));
- for (i = 0; i < 5; i++)
- printk("SH%d: 0x%08lx\n",i,
- zpeekl(zatm_dev,uPD98401_IM(zatm_vcc->shaper)+16*i));
- qrp = (unsigned long *) zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+
- uPD98401_TXVC_QRP);
- printk("qrp=0x%08lx\n",(unsigned long) qrp);
- for (i = 0; i < 4; i++) printk("QRP[%d]: 0x%08lx",i,qrp[i]);
-}
-#endif
-
-
-static const char *err_txt[] = {
- "No error",
- "RX buf underflow",
- "RX FIFO overrun",
- "Maximum len violation",
- "CRC error",
- "User abort",
- "Length violation",
- "T1 error",
- "Deactivated",
- "???",
- "???",
- "???",
- "???",
- "???",
- "???",
- "???"
-};
-
-
-static void poll_rx(struct atm_dev *dev,int mbx)
-{
- struct zatm_dev *zatm_dev;
- unsigned long pos;
- u32 x;
- int error;
-
- EVENT("poll_rx\n",0,0);
- zatm_dev = ZATM_DEV(dev);
- pos = (zatm_dev->mbx_start[mbx] & ~0xffffUL) | zin(MTA(mbx));
- while (x = zin(MWA(mbx)), (pos & 0xffff) != x) {
- u32 *here;
- struct sk_buff *skb;
- struct atm_vcc *vcc;
- int cells,size,chan;
-
- EVENT("MBX: host 0x%lx, nic 0x%x\n",pos,x);
- here = (u32 *) pos;
- if (((pos += 16) & 0xffff) == zatm_dev->mbx_end[mbx])
- pos = zatm_dev->mbx_start[mbx];
- cells = here[0] & uPD98401_AAL5_SIZE;
-#if 0
-printk("RX IND: 0x%x, 0x%x, 0x%x, 0x%x\n",here[0],here[1],here[2],here[3]);
-{
-unsigned long *x;
- printk("POOL: 0x%08x, 0x%08x\n",zpeekl(zatm_dev,
- zatm_dev->pool_base),
- zpeekl(zatm_dev,zatm_dev->pool_base+1));
- x = (unsigned long *) here[2];
- printk("[0..3] = 0x%08lx, 0x%08lx, 0x%08lx, 0x%08lx\n",
- x[0],x[1],x[2],x[3]);
-}
-#endif
- error = 0;
- if (here[3] & uPD98401_AAL5_ERR) {
- error = (here[3] & uPD98401_AAL5_ES) >>
- uPD98401_AAL5_ES_SHIFT;
- if (error == uPD98401_AAL5_ES_DEACT ||
- error == uPD98401_AAL5_ES_FREE) continue;
- }
-EVENT("error code 0x%x/0x%x\n",(here[3] & uPD98401_AAL5_ES) >>
- uPD98401_AAL5_ES_SHIFT,error);
- skb = ((struct rx_buffer_head *) bus_to_virt(here[2]))->skb;
- __net_timestamp(skb);
-#if 0
-printk("[-3..0] 0x%08lx 0x%08lx 0x%08lx 0x%08lx\n",((unsigned *) skb->data)[-3],
- ((unsigned *) skb->data)[-2],((unsigned *) skb->data)[-1],
- ((unsigned *) skb->data)[0]);
-#endif
- EVENT("skb 0x%lx, here 0x%lx\n",(unsigned long) skb,
- (unsigned long) here);
-#if 0
-printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
-#endif
- size = error ? 0 : ntohs(((__be16 *) skb->data)[cells*
- ATM_CELL_PAYLOAD/sizeof(u16)-3]);
- EVENT("got skb 0x%lx, size %d\n",(unsigned long) skb,size);
- chan = (here[3] & uPD98401_AAL5_CHAN) >>
- uPD98401_AAL5_CHAN_SHIFT;
- if (chan < zatm_dev->chans && zatm_dev->rx_map[chan]) {
- int pos;
- vcc = zatm_dev->rx_map[chan];
- pos = ZATM_VCC(vcc)->pool;
- if (skb == zatm_dev->last_free[pos])
- zatm_dev->last_free[pos] = NULL;
- skb_unlink(skb, zatm_dev->pool + pos);
- }
- else {
- printk(KERN_ERR DEV_LABEL "(itf %d): RX indication "
- "for non-existing channel\n",dev->number);
- size = 0;
- vcc = NULL;
- event_dump();
- }
- if (error) {
- static unsigned long silence = 0;
- static int last_error = 0;
-
- if (error != last_error ||
- time_after(jiffies, silence) || silence == 0){
- printk(KERN_WARNING DEV_LABEL "(itf %d): "
- "chan %d error %s\n",dev->number,chan,
- err_txt[error]);
- last_error = error;
- silence = (jiffies+2*HZ)|1;
- }
- size = 0;
- }
- if (size && (size > cells*ATM_CELL_PAYLOAD-ATM_AAL5_TRAILER ||
- size <= (cells-1)*ATM_CELL_PAYLOAD-ATM_AAL5_TRAILER)) {
- printk(KERN_ERR DEV_LABEL "(itf %d): size %d with %d "
- "cells\n",dev->number,size,cells);
- size = 0;
- event_dump();
- }
- if (size > ATM_MAX_AAL5_PDU) {
- printk(KERN_ERR DEV_LABEL "(itf %d): size too big "
- "(%d)\n",dev->number,size);
- size = 0;
- event_dump();
- }
- if (!size) {
- dev_kfree_skb_irq(skb);
- if (vcc) atomic_inc(&vcc->stats->rx_err);
- continue;
- }
- if (!atm_charge(vcc,skb->truesize)) {
- dev_kfree_skb_irq(skb);
- continue;
- }
- skb->len = size;
- ATM_SKB(skb)->vcc = vcc;
- vcc->push(vcc,skb);
- atomic_inc(&vcc->stats->rx);
- }
- zout(pos & 0xffff,MTA(mbx));
-#if 0 /* probably a stupid idea */
- refill_pool(dev,zatm_vcc->pool);
- /* maybe this saves us a few interrupts */
-#endif
-}
-
-
-static int open_rx_first(struct atm_vcc *vcc)
-{
- struct zatm_dev *zatm_dev;
- struct zatm_vcc *zatm_vcc;
- unsigned long flags;
- unsigned short chan;
- int cells;
-
- DPRINTK("open_rx_first (0x%x)\n",inb_p(0xc053));
- zatm_dev = ZATM_DEV(vcc->dev);
- zatm_vcc = ZATM_VCC(vcc);
- zatm_vcc->rx_chan = 0;
- if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
- if (vcc->qos.aal == ATM_AAL5) {
- if (vcc->qos.rxtp.max_sdu > 65464)
- vcc->qos.rxtp.max_sdu = 65464;
- /* fix this - we may want to receive 64kB SDUs
- later */
- cells = DIV_ROUND_UP(vcc->qos.rxtp.max_sdu + ATM_AAL5_TRAILER,
- ATM_CELL_PAYLOAD);
- zatm_vcc->pool = pool_index(cells*ATM_CELL_PAYLOAD);
- }
- else {
- cells = 1;
- zatm_vcc->pool = ZATM_AAL0_POOL;
- }
- if (zatm_vcc->pool < 0) return -EMSGSIZE;
- spin_lock_irqsave(&zatm_dev->lock, flags);
- zwait();
- zout(uPD98401_OPEN_CHAN,CMR);
- zwait();
- DPRINTK("0x%x 0x%x\n",zin(CMR),zin(CER));
- chan = (zin(CMR) & uPD98401_CHAN_ADDR) >> uPD98401_CHAN_ADDR_SHIFT;
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- DPRINTK("chan is %d\n",chan);
- if (!chan) return -EAGAIN;
- use_pool(vcc->dev,zatm_vcc->pool);
- DPRINTK("pool %d\n",zatm_vcc->pool);
- /* set up VC descriptor */
- spin_lock_irqsave(&zatm_dev->lock, flags);
- zpokel(zatm_dev,zatm_vcc->pool << uPD98401_RXVC_POOL_SHIFT,
- chan*VC_SIZE/4);
- zpokel(zatm_dev,uPD98401_RXVC_OD | (vcc->qos.aal == ATM_AAL5 ?
- uPD98401_RXVC_AR : 0) | cells,chan*VC_SIZE/4+1);
- zpokel(zatm_dev,0,chan*VC_SIZE/4+2);
- zatm_vcc->rx_chan = chan;
- zatm_dev->rx_map[chan] = vcc;
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- return 0;
-}
-
-
-static int open_rx_second(struct atm_vcc *vcc)
-{
- struct zatm_dev *zatm_dev;
- struct zatm_vcc *zatm_vcc;
- unsigned long flags;
- int pos,shift;
-
- DPRINTK("open_rx_second (0x%x)\n",inb_p(0xc053));
- zatm_dev = ZATM_DEV(vcc->dev);
- zatm_vcc = ZATM_VCC(vcc);
- if (!zatm_vcc->rx_chan) return 0;
- spin_lock_irqsave(&zatm_dev->lock, flags);
- /* should also handle VPI @@@ */
- pos = vcc->vci >> 1;
- shift = (1-(vcc->vci & 1)) << 4;
- zpokel(zatm_dev,(zpeekl(zatm_dev,pos) & ~(0xffff << shift)) |
- ((zatm_vcc->rx_chan | uPD98401_RXLT_ENBL) << shift),pos);
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- return 0;
-}
-
-
-static void close_rx(struct atm_vcc *vcc)
-{
- struct zatm_dev *zatm_dev;
- struct zatm_vcc *zatm_vcc;
- unsigned long flags;
- int pos,shift;
-
- zatm_vcc = ZATM_VCC(vcc);
- zatm_dev = ZATM_DEV(vcc->dev);
- if (!zatm_vcc->rx_chan) return;
- DPRINTK("close_rx\n");
- /* disable receiver */
- if (vcc->vpi != ATM_VPI_UNSPEC && vcc->vci != ATM_VCI_UNSPEC) {
- spin_lock_irqsave(&zatm_dev->lock, flags);
- pos = vcc->vci >> 1;
- shift = (1-(vcc->vci & 1)) << 4;
- zpokel(zatm_dev,zpeekl(zatm_dev,pos) & ~(0xffff << shift),pos);
- zwait();
- zout(uPD98401_NOP,CMR);
- zwait();
- zout(uPD98401_NOP,CMR);
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- }
- spin_lock_irqsave(&zatm_dev->lock, flags);
- zwait();
- zout(uPD98401_DEACT_CHAN | uPD98401_CHAN_RT | (zatm_vcc->rx_chan <<
- uPD98401_CHAN_ADDR_SHIFT),CMR);
- zwait();
- udelay(10); /* why oh why ... ? */
- zout(uPD98401_CLOSE_CHAN | uPD98401_CHAN_RT | (zatm_vcc->rx_chan <<
- uPD98401_CHAN_ADDR_SHIFT),CMR);
- zwait();
- if (!(zin(CMR) & uPD98401_CHAN_ADDR))
- printk(KERN_CRIT DEV_LABEL "(itf %d): can't close RX channel "
- "%d\n",vcc->dev->number,zatm_vcc->rx_chan);
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- zatm_dev->rx_map[zatm_vcc->rx_chan] = NULL;
- zatm_vcc->rx_chan = 0;
- unuse_pool(vcc->dev,zatm_vcc->pool);
-}
-
-
-static int start_rx(struct atm_dev *dev)
-{
- struct zatm_dev *zatm_dev;
- int i;
-
- DPRINTK("start_rx\n");
- zatm_dev = ZATM_DEV(dev);
- zatm_dev->rx_map = kcalloc(zatm_dev->chans,
- sizeof(*zatm_dev->rx_map),
- GFP_KERNEL);
- if (!zatm_dev->rx_map) return -ENOMEM;
- /* set VPI/VCI split (use all VCIs and give what's left to VPIs) */
- zpokel(zatm_dev,(1 << dev->ci_range.vci_bits)-1,uPD98401_VRR);
- /* prepare free buffer pools */
- for (i = 0; i <= ZATM_LAST_POOL; i++) {
- zatm_dev->pool_info[i].ref_count = 0;
- zatm_dev->pool_info[i].rqa_count = 0;
- zatm_dev->pool_info[i].rqu_count = 0;
- zatm_dev->pool_info[i].low_water = LOW_MARK;
- zatm_dev->pool_info[i].high_water = HIGH_MARK;
- zatm_dev->pool_info[i].offset = 0;
- zatm_dev->pool_info[i].next_off = 0;
- zatm_dev->pool_info[i].next_cnt = 0;
- zatm_dev->pool_info[i].next_thres = OFF_CNG_THRES;
- }
- return 0;
-}
-
-
-/*----------------------------------- TX ------------------------------------*/
-
-
-static int do_tx(struct sk_buff *skb)
-{
- struct atm_vcc *vcc;
- struct zatm_dev *zatm_dev;
- struct zatm_vcc *zatm_vcc;
- u32 *dsc;
- unsigned long flags;
-
- EVENT("do_tx\n",0,0);
- DPRINTK("sending skb %p\n",skb);
- vcc = ATM_SKB(skb)->vcc;
- zatm_dev = ZATM_DEV(vcc->dev);
- zatm_vcc = ZATM_VCC(vcc);
- EVENT("iovcnt=%d\n",skb_shinfo(skb)->nr_frags,0);
- spin_lock_irqsave(&zatm_dev->lock, flags);
- if (!skb_shinfo(skb)->nr_frags) {
- if (zatm_vcc->txing == RING_ENTRIES-1) {
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- return RING_BUSY;
- }
- zatm_vcc->txing++;
- dsc = zatm_vcc->ring+zatm_vcc->ring_curr;
- zatm_vcc->ring_curr = (zatm_vcc->ring_curr+RING_WORDS) &
- (RING_ENTRIES*RING_WORDS-1);
- dsc[1] = 0;
- dsc[2] = skb->len;
- dsc[3] = virt_to_bus(skb->data);
- mb();
- dsc[0] = uPD98401_TXPD_V | uPD98401_TXPD_DP | uPD98401_TXPD_SM
- | (vcc->qos.aal == ATM_AAL5 ? uPD98401_TXPD_AAL5 : 0 |
- (ATM_SKB(skb)->atm_options & ATM_ATMOPT_CLP ?
- uPD98401_CLPM_1 : uPD98401_CLPM_0));
- EVENT("dsc (0x%lx)\n",(unsigned long) dsc,0);
- }
- else {
-printk("NONONONOO!!!!\n");
- dsc = NULL;
-#if 0
- u32 *put;
- int i;
-
- dsc = kmalloc(uPD98401_TXPD_SIZE * 2 +
- uPD98401_TXBD_SIZE * ATM_SKB(skb)->iovcnt, GFP_ATOMIC);
- if (!dsc) {
- if (vcc->pop)
- vcc->pop(vcc, skb);
- else
- dev_kfree_skb_irq(skb);
- return -EAGAIN;
- }
- /* @@@ should check alignment */
- put = dsc+8;
- dsc[0] = uPD98401_TXPD_V | uPD98401_TXPD_DP |
- (vcc->aal == ATM_AAL5 ? uPD98401_TXPD_AAL5 : 0 |
- (ATM_SKB(skb)->atm_options & ATM_ATMOPT_CLP ?
- uPD98401_CLPM_1 : uPD98401_CLPM_0));
- dsc[1] = 0;
- dsc[2] = ATM_SKB(skb)->iovcnt * uPD98401_TXBD_SIZE;
- dsc[3] = virt_to_bus(put);
- for (i = 0; i < ATM_SKB(skb)->iovcnt; i++) {
- *put++ = ((struct iovec *) skb->data)[i].iov_len;
- *put++ = virt_to_bus(((struct iovec *)
- skb->data)[i].iov_base);
- }
- put[-2] |= uPD98401_TXBD_LAST;
-#endif
- }
- ZATM_PRV_DSC(skb) = dsc;
- skb_queue_tail(&zatm_vcc->tx_queue,skb);
- DPRINTK("QRP=0x%08lx\n",zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+
- uPD98401_TXVC_QRP));
- zwait();
- zout(uPD98401_TX_READY | (zatm_vcc->tx_chan <<
- uPD98401_CHAN_ADDR_SHIFT),CMR);
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- EVENT("done\n",0,0);
- return 0;
-}
-
-
-static inline void dequeue_tx(struct atm_vcc *vcc)
-{
- struct zatm_vcc *zatm_vcc;
- struct sk_buff *skb;
-
- EVENT("dequeue_tx\n",0,0);
- zatm_vcc = ZATM_VCC(vcc);
- skb = skb_dequeue(&zatm_vcc->tx_queue);
- if (!skb) {
- printk(KERN_CRIT DEV_LABEL "(itf %d): dequeue_tx but not "
- "txing\n",vcc->dev->number);
- return;
- }
-#if 0 /* @@@ would fail on CLP */
-if (*ZATM_PRV_DSC(skb) != (uPD98401_TXPD_V | uPD98401_TXPD_DP |
- uPD98401_TXPD_SM | uPD98401_TXPD_AAL5)) printk("@#*$!!!! (%08x)\n",
- *ZATM_PRV_DSC(skb));
-#endif
- *ZATM_PRV_DSC(skb) = 0; /* mark as invalid */
- zatm_vcc->txing--;
- if (vcc->pop) vcc->pop(vcc,skb);
- else dev_kfree_skb_irq(skb);
- while ((skb = skb_dequeue(&zatm_vcc->backlog)))
- if (do_tx(skb) == RING_BUSY) {
- skb_queue_head(&zatm_vcc->backlog,skb);
- break;
- }
- atomic_inc(&vcc->stats->tx);
- wake_up(&zatm_vcc->tx_wait);
-}
-
-
-static void poll_tx(struct atm_dev *dev,int mbx)
-{
- struct zatm_dev *zatm_dev;
- unsigned long pos;
- u32 x;
-
- EVENT("poll_tx\n",0,0);
- zatm_dev = ZATM_DEV(dev);
- pos = (zatm_dev->mbx_start[mbx] & ~0xffffUL) | zin(MTA(mbx));
- while (x = zin(MWA(mbx)), (pos & 0xffff) != x) {
- int chan;
-
-#if 1
- u32 data,*addr;
-
- EVENT("MBX: host 0x%lx, nic 0x%x\n",pos,x);
- addr = (u32 *) pos;
- data = *addr;
- chan = (data & uPD98401_TXI_CONN) >> uPD98401_TXI_CONN_SHIFT;
- EVENT("addr = 0x%lx, data = 0x%08x,",(unsigned long) addr,
- data);
- EVENT("chan = %d\n",chan,0);
-#else
-NO !
- chan = (zatm_dev->mbx_start[mbx][pos >> 2] & uPD98401_TXI_CONN)
- >> uPD98401_TXI_CONN_SHIFT;
-#endif
- if (chan < zatm_dev->chans && zatm_dev->tx_map[chan])
- dequeue_tx(zatm_dev->tx_map[chan]);
- else {
- printk(KERN_CRIT DEV_LABEL "(itf %d): TX indication "
- "for non-existing channel %d\n",dev->number,chan);
- event_dump();
- }
- if (((pos += 4) & 0xffff) == zatm_dev->mbx_end[mbx])
- pos = zatm_dev->mbx_start[mbx];
- }
- zout(pos & 0xffff,MTA(mbx));
-}
-
-
-/*
- * BUG BUG BUG: Doesn't handle "new-style" rate specification yet.
- */
-
-static int alloc_shaper(struct atm_dev *dev,int *pcr,int min,int max,int ubr)
-{
- struct zatm_dev *zatm_dev;
- unsigned long flags;
- unsigned long i,m,c;
- int shaper;
-
- DPRINTK("alloc_shaper (min = %d, max = %d)\n",min,max);
- zatm_dev = ZATM_DEV(dev);
- if (!zatm_dev->free_shapers) return -EAGAIN;
- for (shaper = 0; !((zatm_dev->free_shapers >> shaper) & 1); shaper++);
- zatm_dev->free_shapers &= ~1 << shaper;
- if (ubr) {
- c = 5;
- i = m = 1;
- zatm_dev->ubr_ref_cnt++;
- zatm_dev->ubr = shaper;
- *pcr = 0;
- }
- else {
- if (min) {
- if (min <= 255) {
- i = min;
- m = ATM_OC3_PCR;
- }
- else {
- i = 255;
- m = ATM_OC3_PCR*255/min;
- }
- }
- else {
- if (max > zatm_dev->tx_bw) max = zatm_dev->tx_bw;
- if (max <= 255) {
- i = max;
- m = ATM_OC3_PCR;
- }
- else {
- i = 255;
- m = DIV_ROUND_UP(ATM_OC3_PCR*255, max);
- }
- }
- if (i > m) {
- printk(KERN_CRIT DEV_LABEL "shaper algorithm botched "
- "[%d,%d] -> i=%ld,m=%ld\n",min,max,i,m);
- m = i;
- }
- *pcr = i*ATM_OC3_PCR/m;
- c = 20; /* @@@ should use max_cdv ! */
- if ((min && *pcr < min) || (max && *pcr > max)) return -EINVAL;
- if (zatm_dev->tx_bw < *pcr) return -EAGAIN;
- zatm_dev->tx_bw -= *pcr;
- }
- spin_lock_irqsave(&zatm_dev->lock, flags);
- DPRINTK("i = %d, m = %d, PCR = %d\n",i,m,*pcr);
- zpokel(zatm_dev,(i << uPD98401_IM_I_SHIFT) | m,uPD98401_IM(shaper));
- zpokel(zatm_dev,c << uPD98401_PC_C_SHIFT,uPD98401_PC(shaper));
- zpokel(zatm_dev,0,uPD98401_X(shaper));
- zpokel(zatm_dev,0,uPD98401_Y(shaper));
- zpokel(zatm_dev,uPD98401_PS_E,uPD98401_PS(shaper));
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- return shaper;
-}
-
-
-static void dealloc_shaper(struct atm_dev *dev,int shaper)
-{
- struct zatm_dev *zatm_dev;
- unsigned long flags;
-
- zatm_dev = ZATM_DEV(dev);
- if (shaper == zatm_dev->ubr) {
- if (--zatm_dev->ubr_ref_cnt) return;
- zatm_dev->ubr = -1;
- }
- spin_lock_irqsave(&zatm_dev->lock, flags);
- zpokel(zatm_dev,zpeekl(zatm_dev,uPD98401_PS(shaper)) & ~uPD98401_PS_E,
- uPD98401_PS(shaper));
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- zatm_dev->free_shapers |= 1 << shaper;
-}
-
-
-static void close_tx(struct atm_vcc *vcc)
-{
- struct zatm_dev *zatm_dev;
- struct zatm_vcc *zatm_vcc;
- unsigned long flags;
- int chan;
-
- zatm_vcc = ZATM_VCC(vcc);
- zatm_dev = ZATM_DEV(vcc->dev);
- chan = zatm_vcc->tx_chan;
- if (!chan) return;
- DPRINTK("close_tx\n");
- if (skb_peek(&zatm_vcc->backlog)) {
- printk("waiting for backlog to drain ...\n");
- event_dump();
- wait_event(zatm_vcc->tx_wait, !skb_peek(&zatm_vcc->backlog));
- }
- if (skb_peek(&zatm_vcc->tx_queue)) {
- printk("waiting for TX queue to drain ...\n");
- event_dump();
- wait_event(zatm_vcc->tx_wait, !skb_peek(&zatm_vcc->tx_queue));
- }
- spin_lock_irqsave(&zatm_dev->lock, flags);
-#if 0
- zwait();
- zout(uPD98401_DEACT_CHAN | (chan << uPD98401_CHAN_ADDR_SHIFT),CMR);
-#endif
- zwait();
- zout(uPD98401_CLOSE_CHAN | (chan << uPD98401_CHAN_ADDR_SHIFT),CMR);
- zwait();
- if (!(zin(CMR) & uPD98401_CHAN_ADDR))
- printk(KERN_CRIT DEV_LABEL "(itf %d): can't close TX channel "
- "%d\n",vcc->dev->number,chan);
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- zatm_vcc->tx_chan = 0;
- zatm_dev->tx_map[chan] = NULL;
- if (zatm_vcc->shaper != zatm_dev->ubr) {
- zatm_dev->tx_bw += vcc->qos.txtp.min_pcr;
- dealloc_shaper(vcc->dev,zatm_vcc->shaper);
- }
- kfree(zatm_vcc->ring);
-}
-
-
-static int open_tx_first(struct atm_vcc *vcc)
-{
- struct zatm_dev *zatm_dev;
- struct zatm_vcc *zatm_vcc;
- unsigned long flags;
- u32 *loop;
- unsigned short chan;
- int unlimited;
-
- DPRINTK("open_tx_first\n");
- zatm_dev = ZATM_DEV(vcc->dev);
- zatm_vcc = ZATM_VCC(vcc);
- zatm_vcc->tx_chan = 0;
- if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
- spin_lock_irqsave(&zatm_dev->lock, flags);
- zwait();
- zout(uPD98401_OPEN_CHAN,CMR);
- zwait();
- DPRINTK("0x%x 0x%x\n",zin(CMR),zin(CER));
- chan = (zin(CMR) & uPD98401_CHAN_ADDR) >> uPD98401_CHAN_ADDR_SHIFT;
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- DPRINTK("chan is %d\n",chan);
- if (!chan) return -EAGAIN;
- unlimited = vcc->qos.txtp.traffic_class == ATM_UBR &&
- (!vcc->qos.txtp.max_pcr || vcc->qos.txtp.max_pcr == ATM_MAX_PCR ||
- vcc->qos.txtp.max_pcr >= ATM_OC3_PCR);
- if (unlimited && zatm_dev->ubr != -1) zatm_vcc->shaper = zatm_dev->ubr;
- else {
- int pcr;
-
- if (unlimited) vcc->qos.txtp.max_sdu = ATM_MAX_AAL5_PDU;
- if ((zatm_vcc->shaper = alloc_shaper(vcc->dev,&pcr,
- vcc->qos.txtp.min_pcr,vcc->qos.txtp.max_pcr,unlimited))
- < 0) {
- close_tx(vcc);
- return zatm_vcc->shaper;
- }
- if (pcr > ATM_OC3_PCR) pcr = ATM_OC3_PCR;
- vcc->qos.txtp.min_pcr = vcc->qos.txtp.max_pcr = pcr;
- }
- zatm_vcc->tx_chan = chan;
- skb_queue_head_init(&zatm_vcc->tx_queue);
- init_waitqueue_head(&zatm_vcc->tx_wait);
- /* initialize ring */
- zatm_vcc->ring = kzalloc(RING_SIZE,GFP_KERNEL);
- if (!zatm_vcc->ring) return -ENOMEM;
- loop = zatm_vcc->ring+RING_ENTRIES*RING_WORDS;
- loop[0] = uPD98401_TXPD_V;
- loop[1] = loop[2] = 0;
- loop[3] = virt_to_bus(zatm_vcc->ring);
- zatm_vcc->ring_curr = 0;
- zatm_vcc->txing = 0;
- skb_queue_head_init(&zatm_vcc->backlog);
- zpokel(zatm_dev,virt_to_bus(zatm_vcc->ring),
- chan*VC_SIZE/4+uPD98401_TXVC_QRP);
- return 0;
-}
-
-
-static int open_tx_second(struct atm_vcc *vcc)
-{
- struct zatm_dev *zatm_dev;
- struct zatm_vcc *zatm_vcc;
- unsigned long flags;
-
- DPRINTK("open_tx_second\n");
- zatm_dev = ZATM_DEV(vcc->dev);
- zatm_vcc = ZATM_VCC(vcc);
- if (!zatm_vcc->tx_chan) return 0;
- /* set up VC descriptor */
- spin_lock_irqsave(&zatm_dev->lock, flags);
- zpokel(zatm_dev,0,zatm_vcc->tx_chan*VC_SIZE/4);
- zpokel(zatm_dev,uPD98401_TXVC_L | (zatm_vcc->shaper <<
- uPD98401_TXVC_SHP_SHIFT) | (vcc->vpi << uPD98401_TXVC_VPI_SHIFT) |
- vcc->vci,zatm_vcc->tx_chan*VC_SIZE/4+1);
- zpokel(zatm_dev,0,zatm_vcc->tx_chan*VC_SIZE/4+2);
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- zatm_dev->tx_map[zatm_vcc->tx_chan] = vcc;
- return 0;
-}
-
-
-static int start_tx(struct atm_dev *dev)
-{
- struct zatm_dev *zatm_dev;
- int i;
-
- DPRINTK("start_tx\n");
- zatm_dev = ZATM_DEV(dev);
- zatm_dev->tx_map = kmalloc_array(zatm_dev->chans,
- sizeof(*zatm_dev->tx_map),
- GFP_KERNEL);
- if (!zatm_dev->tx_map) return -ENOMEM;
- zatm_dev->tx_bw = ATM_OC3_PCR;
- zatm_dev->free_shapers = (1 << NR_SHAPERS)-1;
- zatm_dev->ubr = -1;
- zatm_dev->ubr_ref_cnt = 0;
- /* initialize shapers */
- for (i = 0; i < NR_SHAPERS; i++) zpokel(zatm_dev,0,uPD98401_PS(i));
- return 0;
-}
-
-
-/*------------------------------- interrupts --------------------------------*/
-
-
-static irqreturn_t zatm_int(int irq,void *dev_id)
-{
- struct atm_dev *dev;
- struct zatm_dev *zatm_dev;
- u32 reason;
- int handled = 0;
-
- dev = dev_id;
- zatm_dev = ZATM_DEV(dev);
- while ((reason = zin(GSR))) {
- handled = 1;
- EVENT("reason 0x%x\n",reason,0);
- if (reason & uPD98401_INT_PI) {
- EVENT("PHY int\n",0,0);
- dev->phy->interrupt(dev);
- }
- if (reason & uPD98401_INT_RQA) {
- unsigned long pools;
- int i;
-
- pools = zin(RQA);
- EVENT("RQA (0x%08x)\n",pools,0);
- for (i = 0; pools; i++) {
- if (pools & 1) {
- refill_pool(dev,i);
- zatm_dev->pool_info[i].rqa_count++;
- }
- pools >>= 1;
- }
- }
- if (reason & uPD98401_INT_RQU) {
- unsigned long pools;
- int i;
- pools = zin(RQU);
- printk(KERN_WARNING DEV_LABEL "(itf %d): RQU 0x%08lx\n",
- dev->number,pools);
- event_dump();
- for (i = 0; pools; i++) {
- if (pools & 1) {
- refill_pool(dev,i);
- zatm_dev->pool_info[i].rqu_count++;
- }
- pools >>= 1;
- }
- }
- /* don't handle RD */
- if (reason & uPD98401_INT_SPE)
- printk(KERN_ALERT DEV_LABEL "(itf %d): system parity "
- "error at 0x%08x\n",dev->number,zin(ADDR));
- if (reason & uPD98401_INT_CPE)
- printk(KERN_ALERT DEV_LABEL "(itf %d): control memory "
- "parity error at 0x%08x\n",dev->number,zin(ADDR));
- if (reason & uPD98401_INT_SBE) {
- printk(KERN_ALERT DEV_LABEL "(itf %d): system bus "
- "error at 0x%08x\n",dev->number,zin(ADDR));
- event_dump();
- }
- /* don't handle IND */
- if (reason & uPD98401_INT_MF) {
- printk(KERN_CRIT DEV_LABEL "(itf %d): mailbox full "
- "(0x%x)\n",dev->number,(reason & uPD98401_INT_MF)
- >> uPD98401_INT_MF_SHIFT);
- event_dump();
- /* @@@ should try to recover */
- }
- if (reason & uPD98401_INT_MM) {
- if (reason & 1) poll_rx(dev,0);
- if (reason & 2) poll_rx(dev,1);
- if (reason & 4) poll_tx(dev,2);
- if (reason & 8) poll_tx(dev,3);
- }
- /* @@@ handle RCRn */
- }
- return IRQ_RETVAL(handled);
-}
-
-
-/*----------------------------- (E)EPROM access -----------------------------*/
-
-
-static void eprom_set(struct zatm_dev *zatm_dev, unsigned long value,
- unsigned short cmd)
-{
- int error;
-
- if ((error = pci_write_config_dword(zatm_dev->pci_dev,cmd,value)))
- printk(KERN_ERR DEV_LABEL ": PCI write failed (0x%02x)\n",
- error);
-}
-
-
-static unsigned long eprom_get(struct zatm_dev *zatm_dev, unsigned short cmd)
-{
- unsigned int value;
- int error;
-
- if ((error = pci_read_config_dword(zatm_dev->pci_dev,cmd,&value)))
- printk(KERN_ERR DEV_LABEL ": PCI read failed (0x%02x)\n",
- error);
- return value;
-}
-
-
-static void eprom_put_bits(struct zatm_dev *zatm_dev, unsigned long data,
- int bits, unsigned short cmd)
-{
- unsigned long value;
- int i;
-
- for (i = bits-1; i >= 0; i--) {
- value = ZEPROM_CS | (((data >> i) & 1) ? ZEPROM_DI : 0);
- eprom_set(zatm_dev,value,cmd);
- eprom_set(zatm_dev,value | ZEPROM_SK,cmd);
- eprom_set(zatm_dev,value,cmd);
- }
-}
-
-
-static void eprom_get_byte(struct zatm_dev *zatm_dev, unsigned char *byte,
- unsigned short cmd)
-{
- int i;
-
- *byte = 0;
- for (i = 8; i; i--) {
- eprom_set(zatm_dev,ZEPROM_CS,cmd);
- eprom_set(zatm_dev,ZEPROM_CS | ZEPROM_SK,cmd);
- *byte <<= 1;
- if (eprom_get(zatm_dev,cmd) & ZEPROM_DO) *byte |= 1;
- eprom_set(zatm_dev,ZEPROM_CS,cmd);
- }
-}
-
-
-static int eprom_try_esi(struct atm_dev *dev, unsigned short cmd, int offset,
- int swap)
-{
- unsigned char buf[ZEPROM_SIZE];
- struct zatm_dev *zatm_dev;
- int i;
-
- zatm_dev = ZATM_DEV(dev);
- for (i = 0; i < ZEPROM_SIZE; i += 2) {
- eprom_set(zatm_dev,ZEPROM_CS,cmd); /* select EPROM */
- eprom_put_bits(zatm_dev,ZEPROM_CMD_READ,ZEPROM_CMD_LEN,cmd);
- eprom_put_bits(zatm_dev,i >> 1,ZEPROM_ADDR_LEN,cmd);
- eprom_get_byte(zatm_dev,buf+i+swap,cmd);
- eprom_get_byte(zatm_dev,buf+i+1-swap,cmd);
- eprom_set(zatm_dev,0,cmd); /* deselect EPROM */
- }
- memcpy(dev->esi,buf+offset,ESI_LEN);
- return memcmp(dev->esi,"\0\0\0\0\0",ESI_LEN); /* assumes ESI_LEN == 6 */
-}
-
-
-static void eprom_get_esi(struct atm_dev *dev)
-{
- if (eprom_try_esi(dev,ZEPROM_V1_REG,ZEPROM_V1_ESI_OFF,1)) return;
- (void) eprom_try_esi(dev,ZEPROM_V2_REG,ZEPROM_V2_ESI_OFF,0);
-}
-
-
-/*--------------------------------- entries ---------------------------------*/
-
-
-static int zatm_init(struct atm_dev *dev)
-{
- struct zatm_dev *zatm_dev;
- struct pci_dev *pci_dev;
- unsigned short command;
- int error,i,last;
- unsigned long t0,t1,t2;
-
- DPRINTK(">zatm_init\n");
- zatm_dev = ZATM_DEV(dev);
- spin_lock_init(&zatm_dev->lock);
- pci_dev = zatm_dev->pci_dev;
- zatm_dev->base = pci_resource_start(pci_dev, 0);
- zatm_dev->irq = pci_dev->irq;
- if ((error = pci_read_config_word(pci_dev,PCI_COMMAND,&command))) {
- printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%02x\n",
- dev->number,error);
- return -EINVAL;
- }
- if ((error = pci_write_config_word(pci_dev,PCI_COMMAND,
- command | PCI_COMMAND_IO | PCI_COMMAND_MASTER))) {
- printk(KERN_ERR DEV_LABEL "(itf %d): can't enable IO (0x%02x)"
- "\n",dev->number,error);
- return -EIO;
- }
- eprom_get_esi(dev);
- printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d,base=0x%x,irq=%d,",
- dev->number,pci_dev->revision,zatm_dev->base,zatm_dev->irq);
- /* reset uPD98401 */
- zout(0,SWR);
- while (!(zin(GSR) & uPD98401_INT_IND));
- zout(uPD98401_GMR_ONE /*uPD98401_BURST4*/,GMR);
- last = MAX_CRAM_SIZE;
- for (i = last-RAM_INCREMENT; i >= 0; i -= RAM_INCREMENT) {
- zpokel(zatm_dev,0x55555555,i);
- if (zpeekl(zatm_dev,i) != 0x55555555) last = i;
- else {
- zpokel(zatm_dev,0xAAAAAAAA,i);
- if (zpeekl(zatm_dev,i) != 0xAAAAAAAA) last = i;
- else zpokel(zatm_dev,i,i);
- }
- }
- for (i = 0; i < last; i += RAM_INCREMENT)
- if (zpeekl(zatm_dev,i) != i) break;
- zatm_dev->mem = i << 2;
- while (i) zpokel(zatm_dev,0,--i);
- /* reset again to rebuild memory pointers */
- zout(0,SWR);
- while (!(zin(GSR) & uPD98401_INT_IND));
- zout(uPD98401_GMR_ONE | uPD98401_BURST8 | uPD98401_BURST4 |
- uPD98401_BURST2 | uPD98401_GMR_PM | uPD98401_GMR_DR,GMR);
- /* TODO: should shrink allocation now */
- printk("mem=%dkB,%s (",zatm_dev->mem >> 10,zatm_dev->copper ? "UTP" :
- "MMF");
- for (i = 0; i < ESI_LEN; i++)
- printk("%02X%s",dev->esi[i],i == ESI_LEN-1 ? ")\n" : "-");
- do {
- unsigned long flags;
-
- spin_lock_irqsave(&zatm_dev->lock, flags);
- t0 = zpeekl(zatm_dev,uPD98401_TSR);
- udelay(10);
- t1 = zpeekl(zatm_dev,uPD98401_TSR);
- udelay(1010);
- t2 = zpeekl(zatm_dev,uPD98401_TSR);
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- }
- while (t0 > t1 || t1 > t2); /* loop if wrapping ... */
- zatm_dev->khz = t2-2*t1+t0;
- printk(KERN_NOTICE DEV_LABEL "(itf %d): uPD98401 %d.%d at %d.%03d "
- "MHz\n",dev->number,
- (zin(VER) & uPD98401_MAJOR) >> uPD98401_MAJOR_SHIFT,
- zin(VER) & uPD98401_MINOR,zatm_dev->khz/1000,zatm_dev->khz % 1000);
- return uPD98402_init(dev);
-}
-
-
-static int zatm_start(struct atm_dev *dev)
-{
- struct zatm_dev *zatm_dev = ZATM_DEV(dev);
- struct pci_dev *pdev = zatm_dev->pci_dev;
- unsigned long curr;
- int pools,vccs,rx;
- int error, i, ld;
-
- DPRINTK("zatm_start\n");
- zatm_dev->rx_map = zatm_dev->tx_map = NULL;
- for (i = 0; i < NR_MBX; i++)
- zatm_dev->mbx_start[i] = 0;
- error = request_irq(zatm_dev->irq, zatm_int, IRQF_SHARED, DEV_LABEL, dev);
- if (error < 0) {
- printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
- dev->number,zatm_dev->irq);
- goto done;
- }
- /* define memory regions */
- pools = NR_POOLS;
- if (NR_SHAPERS*SHAPER_SIZE > pools*POOL_SIZE)
- pools = NR_SHAPERS*SHAPER_SIZE/POOL_SIZE;
- vccs = (zatm_dev->mem-NR_SHAPERS*SHAPER_SIZE-pools*POOL_SIZE)/
- (2*VC_SIZE+RX_SIZE);
- ld = -1;
- for (rx = 1; rx < vccs; rx <<= 1) ld++;
- dev->ci_range.vpi_bits = 0; /* @@@ no VPI for now */
- dev->ci_range.vci_bits = ld;
- dev->link_rate = ATM_OC3_PCR;
- zatm_dev->chans = vccs; /* ??? */
- curr = rx*RX_SIZE/4;
- DPRINTK("RX pool 0x%08lx\n",curr);
- zpokel(zatm_dev,curr,uPD98401_PMA); /* receive pool */
- zatm_dev->pool_base = curr;
- curr += pools*POOL_SIZE/4;
- DPRINTK("Shapers 0x%08lx\n",curr);
- zpokel(zatm_dev,curr,uPD98401_SMA); /* shapers */
- curr += NR_SHAPERS*SHAPER_SIZE/4;
- DPRINTK("Free 0x%08lx\n",curr);
- zpokel(zatm_dev,curr,uPD98401_TOS); /* free pool */
- printk(KERN_INFO DEV_LABEL "(itf %d): %d shapers, %d pools, %d RX, "
- "%ld VCs\n",dev->number,NR_SHAPERS,pools,rx,
- (zatm_dev->mem-curr*4)/VC_SIZE);
- /* create mailboxes */
- for (i = 0; i < NR_MBX; i++) {
- void *mbx;
- dma_addr_t mbx_dma;
-
- if (!mbx_entries[i])
- continue;
- mbx = dma_alloc_coherent(&pdev->dev,
- 2 * MBX_SIZE(i), &mbx_dma, GFP_KERNEL);
- if (!mbx) {
- error = -ENOMEM;
- goto out;
- }
- /*
- * Alignment provided by dma_alloc_coherent() isn't enough
- * for this device.
- */
- if (((unsigned long)mbx ^ mbx_dma) & 0xffff) {
- printk(KERN_ERR DEV_LABEL "(itf %d): system "
- "bus incompatible with driver\n", dev->number);
- dma_free_coherent(&pdev->dev, 2*MBX_SIZE(i), mbx, mbx_dma);
- error = -ENODEV;
- goto out;
- }
- DPRINTK("mbx@0x%08lx-0x%08lx\n", mbx, mbx + MBX_SIZE(i));
- zatm_dev->mbx_start[i] = (unsigned long)mbx;
- zatm_dev->mbx_dma[i] = mbx_dma;
- zatm_dev->mbx_end[i] = (zatm_dev->mbx_start[i] + MBX_SIZE(i)) &
- 0xffff;
- zout(mbx_dma >> 16, MSH(i));
- zout(mbx_dma, MSL(i));
- zout(zatm_dev->mbx_end[i], MBA(i));
- zout((unsigned long)mbx & 0xffff, MTA(i));
- zout((unsigned long)mbx & 0xffff, MWA(i));
- }
- error = start_tx(dev);
- if (error)
- goto out;
- error = start_rx(dev);
- if (error)
- goto out_tx;
- error = dev->phy->start(dev);
- if (error)
- goto out_rx;
- zout(0xffffffff,IMR); /* enable interrupts */
- /* enable TX & RX */
- zout(zin(GMR) | uPD98401_GMR_SE | uPD98401_GMR_RE,GMR);
-done:
- return error;
-
-out_rx:
- kfree(zatm_dev->rx_map);
-out_tx:
- kfree(zatm_dev->tx_map);
-out:
- while (i-- > 0) {
- dma_free_coherent(&pdev->dev, 2 * MBX_SIZE(i),
- (void *)zatm_dev->mbx_start[i],
- zatm_dev->mbx_dma[i]);
- }
- free_irq(zatm_dev->irq, dev);
- goto done;
-}
-
-
-static void zatm_close(struct atm_vcc *vcc)
-{
- DPRINTK(">zatm_close\n");
- if (!ZATM_VCC(vcc)) return;
- clear_bit(ATM_VF_READY,&vcc->flags);
- close_rx(vcc);
- EVENT("close_tx\n",0,0);
- close_tx(vcc);
- DPRINTK("zatm_close: done waiting\n");
- /* deallocate memory */
- kfree(ZATM_VCC(vcc));
- vcc->dev_data = NULL;
- clear_bit(ATM_VF_ADDR,&vcc->flags);
-}
-
-
-static int zatm_open(struct atm_vcc *vcc)
-{
- struct zatm_vcc *zatm_vcc;
- short vpi = vcc->vpi;
- int vci = vcc->vci;
- int error;
-
- DPRINTK(">zatm_open\n");
- if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
- vcc->dev_data = NULL;
- if (vci != ATM_VPI_UNSPEC && vpi != ATM_VCI_UNSPEC)
- set_bit(ATM_VF_ADDR,&vcc->flags);
- if (vcc->qos.aal != ATM_AAL5) return -EINVAL; /* @@@ AAL0 */
- DPRINTK(DEV_LABEL "(itf %d): open %d.%d\n",vcc->dev->number,vcc->vpi,
- vcc->vci);
- if (!test_bit(ATM_VF_PARTIAL,&vcc->flags)) {
- zatm_vcc = kmalloc(sizeof(*zatm_vcc), GFP_KERNEL);
- if (!zatm_vcc) {
- clear_bit(ATM_VF_ADDR,&vcc->flags);
- return -ENOMEM;
- }
- vcc->dev_data = zatm_vcc;
- ZATM_VCC(vcc)->tx_chan = 0; /* for zatm_close after open_rx */
- if ((error = open_rx_first(vcc))) {
- zatm_close(vcc);
- return error;
- }
- if ((error = open_tx_first(vcc))) {
- zatm_close(vcc);
- return error;
- }
- }
- if (vci == ATM_VPI_UNSPEC || vpi == ATM_VCI_UNSPEC) return 0;
- if ((error = open_rx_second(vcc))) {
- zatm_close(vcc);
- return error;
- }
- if ((error = open_tx_second(vcc))) {
- zatm_close(vcc);
- return error;
- }
- set_bit(ATM_VF_READY,&vcc->flags);
- return 0;
-}
-
-
-static int zatm_change_qos(struct atm_vcc *vcc,struct atm_qos *qos,int flags)
-{
- printk("Not yet implemented\n");
- return -ENOSYS;
- /* @@@ */
-}
-
-
-static int zatm_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg)
-{
- struct zatm_dev *zatm_dev;
- unsigned long flags;
-
- zatm_dev = ZATM_DEV(dev);
- switch (cmd) {
- case ZATM_GETPOOLZ:
- if (!capable(CAP_NET_ADMIN)) return -EPERM;
- fallthrough;
- case ZATM_GETPOOL:
- {
- struct zatm_pool_info info;
- int pool;
-
- if (get_user(pool,
- &((struct zatm_pool_req __user *) arg)->pool_num))
- return -EFAULT;
- if (pool < 0 || pool > ZATM_LAST_POOL)
- return -EINVAL;
- pool = array_index_nospec(pool,
- ZATM_LAST_POOL + 1);
- spin_lock_irqsave(&zatm_dev->lock, flags);
- info = zatm_dev->pool_info[pool];
- if (cmd == ZATM_GETPOOLZ) {
- zatm_dev->pool_info[pool].rqa_count = 0;
- zatm_dev->pool_info[pool].rqu_count = 0;
- }
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- return copy_to_user(
- &((struct zatm_pool_req __user *) arg)->info,
- &info,sizeof(info)) ? -EFAULT : 0;
- }
- case ZATM_SETPOOL:
- {
- struct zatm_pool_info info;
- int pool;
-
- if (!capable(CAP_NET_ADMIN)) return -EPERM;
- if (get_user(pool,
- &((struct zatm_pool_req __user *) arg)->pool_num))
- return -EFAULT;
- if (pool < 0 || pool > ZATM_LAST_POOL)
- return -EINVAL;
- pool = array_index_nospec(pool,
- ZATM_LAST_POOL + 1);
- if (copy_from_user(&info,
- &((struct zatm_pool_req __user *) arg)->info,
- sizeof(info))) return -EFAULT;
- if (!info.low_water)
- info.low_water = zatm_dev->
- pool_info[pool].low_water;
- if (!info.high_water)
- info.high_water = zatm_dev->
- pool_info[pool].high_water;
- if (!info.next_thres)
- info.next_thres = zatm_dev->
- pool_info[pool].next_thres;
- if (info.low_water >= info.high_water ||
- info.low_water < 0)
- return -EINVAL;
- spin_lock_irqsave(&zatm_dev->lock, flags);
- zatm_dev->pool_info[pool].low_water =
- info.low_water;
- zatm_dev->pool_info[pool].high_water =
- info.high_water;
- zatm_dev->pool_info[pool].next_thres =
- info.next_thres;
- spin_unlock_irqrestore(&zatm_dev->lock, flags);
- return 0;
- }
- default:
- if (!dev->phy->ioctl) return -ENOIOCTLCMD;
- return dev->phy->ioctl(dev,cmd,arg);
- }
-}
-
-static int zatm_send(struct atm_vcc *vcc,struct sk_buff *skb)
-{
- int error;
-
- EVENT(">zatm_send 0x%lx\n",(unsigned long) skb,0);
- if (!ZATM_VCC(vcc)->tx_chan || !test_bit(ATM_VF_READY,&vcc->flags)) {
- if (vcc->pop) vcc->pop(vcc,skb);
- else dev_kfree_skb(skb);
- return -EINVAL;
- }
- if (!skb) {
- printk(KERN_CRIT "!skb in zatm_send ?\n");
- if (vcc->pop) vcc->pop(vcc,skb);
- return -EINVAL;
- }
- ATM_SKB(skb)->vcc = vcc;
- error = do_tx(skb);
- if (error != RING_BUSY) return error;
- skb_queue_tail(&ZATM_VCC(vcc)->backlog,skb);
- return 0;
-}
-
-
-static void zatm_phy_put(struct atm_dev *dev,unsigned char value,
- unsigned long addr)
-{
- struct zatm_dev *zatm_dev;
-
- zatm_dev = ZATM_DEV(dev);
- zwait();
- zout(value,CER);
- zout(uPD98401_IND_ACC | uPD98401_IA_B0 |
- (uPD98401_IA_TGT_PHY << uPD98401_IA_TGT_SHIFT) | addr,CMR);
-}
-
-
-static unsigned char zatm_phy_get(struct atm_dev *dev,unsigned long addr)
-{
- struct zatm_dev *zatm_dev;
-
- zatm_dev = ZATM_DEV(dev);
- zwait();
- zout(uPD98401_IND_ACC | uPD98401_IA_B0 | uPD98401_IA_RW |
- (uPD98401_IA_TGT_PHY << uPD98401_IA_TGT_SHIFT) | addr,CMR);
- zwait();
- return zin(CER) & 0xff;
-}
-
-
-static const struct atmdev_ops ops = {
- .open = zatm_open,
- .close = zatm_close,
- .ioctl = zatm_ioctl,
- .send = zatm_send,
- .phy_put = zatm_phy_put,
- .phy_get = zatm_phy_get,
- .change_qos = zatm_change_qos,
-};
-
-static int zatm_init_one(struct pci_dev *pci_dev,
- const struct pci_device_id *ent)
-{
- struct atm_dev *dev;
- struct zatm_dev *zatm_dev;
- int ret = -ENOMEM;
-
- zatm_dev = kmalloc(sizeof(*zatm_dev), GFP_KERNEL);
- if (!zatm_dev) {
- printk(KERN_EMERG "%s: memory shortage\n", DEV_LABEL);
- goto out;
- }
-
- dev = atm_dev_register(DEV_LABEL, &pci_dev->dev, &ops, -1, NULL);
- if (!dev)
- goto out_free;
-
- ret = pci_enable_device(pci_dev);
- if (ret < 0)
- goto out_deregister;
-
- ret = pci_request_regions(pci_dev, DEV_LABEL);
- if (ret < 0)
- goto out_disable;
-
- ret = dma_set_mask_and_coherent(&pci_dev->dev, DMA_BIT_MASK(32));
- if (ret < 0)
- goto out_release;
-
- zatm_dev->pci_dev = pci_dev;
- dev->dev_data = zatm_dev;
- zatm_dev->copper = (int)ent->driver_data;
- if ((ret = zatm_init(dev)) || (ret = zatm_start(dev)))
- goto out_release;
-
- pci_set_drvdata(pci_dev, dev);
- zatm_dev->more = zatm_boards;
- zatm_boards = dev;
- ret = 0;
-out:
- return ret;
-
-out_release:
- pci_release_regions(pci_dev);
-out_disable:
- pci_disable_device(pci_dev);
-out_deregister:
- atm_dev_deregister(dev);
-out_free:
- kfree(zatm_dev);
- goto out;
-}
-
-
-MODULE_LICENSE("GPL");
-
-static const struct pci_device_id zatm_pci_tbl[] = {
- { PCI_VDEVICE(ZEITNET, PCI_DEVICE_ID_ZEITNET_1221), ZATM_COPPER },
- { PCI_VDEVICE(ZEITNET, PCI_DEVICE_ID_ZEITNET_1225), 0 },
- { 0, }
-};
-MODULE_DEVICE_TABLE(pci, zatm_pci_tbl);
-
-static struct pci_driver zatm_driver = {
- .name = DEV_LABEL,
- .id_table = zatm_pci_tbl,
- .probe = zatm_init_one,
-};
-
-static int __init zatm_init_module(void)
-{
- return pci_register_driver(&zatm_driver);
-}
-
-module_init(zatm_init_module);
-/* module_exit not defined so not unloadable */
projects / platform / kernel / linux-starfive.git / commitdiff