+++ /dev/null
-#define USE_PCI_CLOCK
-static const char rcsid[] =
-"Revision: 3.4.5 Date: 2002/03/07 ";
-
-/*
- * pc300.c Cyclades-PC300(tm) Driver.
- *
- * Author: Ivan Passos <ivan@cyclades.com>
- * Maintainer: PC300 Maintainer <pc300@cyclades.com>
- *
- * Copyright: (c) 1999-2003 Cyclades Corp.
- *
- * 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.
- *
- * Using tabstop = 4.
- *
- * $Log: pc300_drv.c,v $
- * Revision 3.23 2002/03/20 13:58:40 henrique
- * Fixed ortographic mistakes
- *
- * Revision 3.22 2002/03/13 16:56:56 henrique
- * Take out the debug messages
- *
- * Revision 3.21 2002/03/07 14:17:09 henrique
- * License data fixed
- *
- * Revision 3.20 2002/01/17 17:58:52 ivan
- * Support for PC300-TE/M (PMC).
- *
- * Revision 3.19 2002/01/03 17:08:47 daniela
- * Enables DMA reception when the SCA-II disables it improperly.
- *
- * Revision 3.18 2001/12/03 18:47:50 daniela
- * Esthetic changes.
- *
- * Revision 3.17 2001/10/19 16:50:13 henrique
- * Patch to kernel 2.4.12 and new generic hdlc.
- *
- * Revision 3.16 2001/10/16 15:12:31 regina
- * clear statistics
- *
- * Revision 3.11 to 3.15 2001/10/11 20:26:04 daniela
- * More DMA fixes for noisy lines.
- * Return the size of bad frames in dma_get_rx_frame_size, so that the Rx buffer
- * descriptors can be cleaned by dma_buf_read (called in cpc_net_rx).
- * Renamed dma_start routine to rx_dma_start. Improved Rx statistics.
- * Fixed BOF interrupt treatment. Created dma_start routine.
- * Changed min and max to cpc_min and cpc_max.
- *
- * Revision 3.10 2001/08/06 12:01:51 regina
- * Fixed problem in DSR_DE bit.
- *
- * Revision 3.9 2001/07/18 19:27:26 daniela
- * Added some history comments.
- *
- * Revision 3.8 2001/07/12 13:11:19 regina
- * bug fix - DCD-OFF in pc300 tty driver
- *
- * Revision 3.3 to 3.7 2001/07/06 15:00:20 daniela
- * Removing kernel 2.4.3 and previous support.
- * DMA transmission bug fix.
- * MTU check in cpc_net_rx fixed.
- * Boot messages reviewed.
- * New configuration parameters (line code, CRC calculation and clock).
- *
- * Revision 3.2 2001/06/22 13:13:02 regina
- * MLPPP implementation. Changed the header of message trace to include
- * the device name. New format : "hdlcX[R/T]: ".
- * Default configuration changed.
- *
- * Revision 3.1 2001/06/15 regina
- * in cpc_queue_xmit, netif_stop_queue is called if don't have free descriptor
- * upping major version number
- *
- * Revision 1.1.1.1 2001/06/13 20:25:04 daniela
- * PC300 initial CVS version (3.4.0-pre1)
- *
- * Revision 3.0.1.2 2001/06/08 daniela
- * Did some changes in the DMA programming implementation to avoid the
- * occurrence of a SCA-II bug when CDA is accessed during a DMA transfer.
- *
- * Revision 3.0.1.1 2001/05/02 daniela
- * Added kernel 2.4.3 support.
- *
- * Revision 3.0.1.0 2001/03/13 daniela, henrique
- * Added Frame Relay Support.
- * Driver now uses HDLC generic driver to provide protocol support.
- *
- * Revision 3.0.0.8 2001/03/02 daniela
- * Fixed ram size detection.
- * Changed SIOCGPC300CONF ioctl, to give hw information to pc300util.
- *
- * Revision 3.0.0.7 2001/02/23 daniela
- * netif_stop_queue called before the SCA-II transmition commands in
- * cpc_queue_xmit, and with interrupts disabled to avoid race conditions with
- * transmition interrupts.
- * Fixed falc_check_status for Unframed E1.
- *
- * Revision 3.0.0.6 2000/12/13 daniela
- * Implemented pc300util support: trace, statistics, status and loopback
- * tests for the PC300 TE boards.
- *
- * Revision 3.0.0.5 2000/12/12 ivan
- * Added support for Unframed E1.
- * Implemented monitor mode.
- * Fixed DCD sensitivity on the second channel.
- * Driver now complies with new PCI kernel architecture.
- *
- * Revision 3.0.0.4 2000/09/28 ivan
- * Implemented DCD sensitivity.
- * Moved hardware-specific open to the end of cpc_open, to avoid race
- * conditions with early reception interrupts.
- * Included code for [request|release]_mem_region().
- * Changed location of pc300.h .
- * Minor code revision (contrib. of Jeff Garzik).
- *
- * Revision 3.0.0.3 2000/07/03 ivan
- * Previous bugfix for the framing errors with external clock made X21
- * boards stop working. This version fixes it.
- *
- * Revision 3.0.0.2 2000/06/23 ivan
- * Revisited cpc_queue_xmit to prevent race conditions on Tx DMA buffer
- * handling when Tx timeouts occur.
- * Revisited Rx statistics.
- * Fixed a bug in the SCA-II programming that would cause framing errors
- * when external clock was configured.
- *
- * Revision 3.0.0.1 2000/05/26 ivan
- * Added logic in the SCA interrupt handler so that no board can monopolize
- * the driver.
- * Request PLX I/O region, although driver doesn't use it, to avoid
- * problems with other drivers accessing it.
- *
- * Revision 3.0.0.0 2000/05/15 ivan
- * Did some changes in the DMA programming implementation to avoid the
- * occurrence of a SCA-II bug in the second channel.
- * Implemented workaround for PLX9050 bug that would cause a system lockup
- * in certain systems, depending on the MMIO addresses allocated to the
- * board.
- * Fixed the FALC chip programming to avoid synchronization problems in the
- * second channel (TE only).
- * Implemented a cleaner and faster Tx DMA descriptor cleanup procedure in
- * cpc_queue_xmit().
- * Changed the built-in driver implementation so that the driver can use the
- * general 'hdlcN' naming convention instead of proprietary device names.
- * Driver load messages are now device-centric, instead of board-centric.
- * Dynamic allocation of net_device structures.
- * Code is now compliant with the new module interface (module_[init|exit]).
- * Make use of the PCI helper functions to access PCI resources.
- *
- * Revision 2.0.0.0 2000/04/15 ivan
- * Added support for the PC300/TE boards (T1/FT1/E1/FE1).
- *
- * Revision 1.1.0.0 2000/02/28 ivan
- * Major changes in the driver architecture.
- * Softnet compliancy implemented.
- * Driver now reports physical instead of virtual memory addresses.
- * Added cpc_change_mtu function.
- *
- * Revision 1.0.0.0 1999/12/16 ivan
- * First official release.
- * Support for 1- and 2-channel boards (which use distinct PCI Device ID's).
- * Support for monolythic installation (i.e., drv built into the kernel).
- * X.25 additional checking when lapb_[dis]connect_request returns an error.
- * SCA programming now covers X.21 as well.
- *
- * Revision 0.3.1.0 1999/11/18 ivan
- * Made X.25 support configuration-dependent (as it depends on external
- * modules to work).
- * Changed X.25-specific function names to comply with adopted convention.
- * Fixed typos in X.25 functions that would cause compile errors (Daniela).
- * Fixed bug in ch_config that would disable interrupts on a previously
- * enabled channel if the other channel on the same board was enabled later.
- *
- * Revision 0.3.0.0 1999/11/16 daniela
- * X.25 support.
- *
- * Revision 0.2.3.0 1999/11/15 ivan
- * Function cpc_ch_status now provides more detailed information.
- * Added support for X.21 clock configuration.
- * Changed TNR1 setting in order to prevent Tx FIFO overaccesses by the SCA.
- * Now using PCI clock instead of internal oscillator clock for the SCA.
- *
- * Revision 0.2.2.0 1999/11/10 ivan
- * Changed the *_dma_buf_check functions so that they would print only
- * the useful info instead of the whole buffer descriptor bank.
- * Fixed bug in cpc_queue_xmit that would eventually crash the system
- * in case of a packet drop.
- * Implemented TX underrun handling.
- * Improved SCA fine tuning to boost up its performance.
- *
- * Revision 0.2.1.0 1999/11/03 ivan
- * Added functions *dma_buf_pt_init to allow independent initialization
- * of the next-descr. and DMA buffer pointers on the DMA descriptors.
- * Kernel buffer release and tbusy clearing is now done in the interrupt
- * handler.
- * Fixed bug in cpc_open that would cause an interface reopen to fail.
- * Added a protocol-specific code section in cpc_net_rx.
- * Removed printk level defs (they might be added back after the beta phase).
- *
- * Revision 0.2.0.0 1999/10/28 ivan
- * Revisited the code so that new protocols can be easily added / supported.
- *
- * Revision 0.1.0.1 1999/10/20 ivan
- * Mostly "esthetic" changes.
- *
- * Revision 0.1.0.0 1999/10/11 ivan
- * Initial version.
- *
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/ioport.h>
-#include <linux/pci.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/net.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/spinlock.h>
-#include <linux/if.h>
-#include <linux/slab.h>
-#include <net/arp.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
-#include "pc300.h"
-
-#define CPC_LOCK(card,flags) \
- do { \
- spin_lock_irqsave(&card->card_lock, flags); \
- } while (0)
-
-#define CPC_UNLOCK(card,flags) \
- do { \
- spin_unlock_irqrestore(&card->card_lock, flags); \
- } while (0)
-
-#undef PC300_DEBUG_PCI
-#undef PC300_DEBUG_INTR
-#undef PC300_DEBUG_TX
-#undef PC300_DEBUG_RX
-#undef PC300_DEBUG_OTHER
-
-static DEFINE_PCI_DEVICE_TABLE(cpc_pci_dev_id) = {
- /* PC300/RSV or PC300/X21, 2 chan */
- {0x120e, 0x300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x300},
- /* PC300/RSV or PC300/X21, 1 chan */
- {0x120e, 0x301, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x301},
- /* PC300/TE, 2 chan */
- {0x120e, 0x310, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x310},
- /* PC300/TE, 1 chan */
- {0x120e, 0x311, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x311},
- /* PC300/TE-M, 2 chan */
- {0x120e, 0x320, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x320},
- /* PC300/TE-M, 1 chan */
- {0x120e, 0x321, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x321},
- /* End of table */
- {0,},
-};
-MODULE_DEVICE_TABLE(pci, cpc_pci_dev_id);
-
-#ifndef cpc_min
-#define cpc_min(a,b) (((a)<(b))?(a):(b))
-#endif
-#ifndef cpc_max
-#define cpc_max(a,b) (((a)>(b))?(a):(b))
-#endif
-
-/* prototypes */
-static void tx_dma_buf_pt_init(pc300_t *, int);
-static void tx_dma_buf_init(pc300_t *, int);
-static void rx_dma_buf_pt_init(pc300_t *, int);
-static void rx_dma_buf_init(pc300_t *, int);
-static void tx_dma_buf_check(pc300_t *, int);
-static void rx_dma_buf_check(pc300_t *, int);
-static irqreturn_t cpc_intr(int, void *);
-static int clock_rate_calc(u32, u32, int *);
-static u32 detect_ram(pc300_t *);
-static void plx_init(pc300_t *);
-static void cpc_trace(struct net_device *, struct sk_buff *, char);
-static int cpc_attach(struct net_device *, unsigned short, unsigned short);
-static int cpc_close(struct net_device *dev);
-
-#ifdef CONFIG_PC300_MLPPP
-void cpc_tty_init(pc300dev_t * dev);
-void cpc_tty_unregister_service(pc300dev_t * pc300dev);
-void cpc_tty_receive(pc300dev_t * pc300dev);
-void cpc_tty_trigger_poll(pc300dev_t * pc300dev);
-#endif
-
-/************************/
-/*** DMA Routines ***/
-/************************/
-static void tx_dma_buf_pt_init(pc300_t * card, int ch)
-{
- int i;
- int ch_factor = ch * N_DMA_TX_BUF;
- volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
- + DMA_TX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
-
- for (i = 0; i < N_DMA_TX_BUF; i++, ptdescr++) {
- cpc_writel(&ptdescr->next, (u32)(DMA_TX_BD_BASE +
- (ch_factor + ((i + 1) & (N_DMA_TX_BUF - 1))) * sizeof(pcsca_bd_t)));
- cpc_writel(&ptdescr->ptbuf,
- (u32)(DMA_TX_BASE + (ch_factor + i) * BD_DEF_LEN));
- }
-}
-
-static void tx_dma_buf_init(pc300_t * card, int ch)
-{
- int i;
- int ch_factor = ch * N_DMA_TX_BUF;
- volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
- + DMA_TX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
-
- for (i = 0; i < N_DMA_TX_BUF; i++, ptdescr++) {
- memset_io(ptdescr, 0, sizeof(pcsca_bd_t));
- cpc_writew(&ptdescr->len, 0);
- cpc_writeb(&ptdescr->status, DST_OSB);
- }
- tx_dma_buf_pt_init(card, ch);
-}
-
-static void rx_dma_buf_pt_init(pc300_t * card, int ch)
-{
- int i;
- int ch_factor = ch * N_DMA_RX_BUF;
- volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
- + DMA_RX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
-
- for (i = 0; i < N_DMA_RX_BUF; i++, ptdescr++) {
- cpc_writel(&ptdescr->next, (u32)(DMA_RX_BD_BASE +
- (ch_factor + ((i + 1) & (N_DMA_RX_BUF - 1))) * sizeof(pcsca_bd_t)));
- cpc_writel(&ptdescr->ptbuf,
- (u32)(DMA_RX_BASE + (ch_factor + i) * BD_DEF_LEN));
- }
-}
-
-static void rx_dma_buf_init(pc300_t * card, int ch)
-{
- int i;
- int ch_factor = ch * N_DMA_RX_BUF;
- volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
- + DMA_RX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
-
- for (i = 0; i < N_DMA_RX_BUF; i++, ptdescr++) {
- memset_io(ptdescr, 0, sizeof(pcsca_bd_t));
- cpc_writew(&ptdescr->len, 0);
- cpc_writeb(&ptdescr->status, 0);
- }
- rx_dma_buf_pt_init(card, ch);
-}
-
-static void tx_dma_buf_check(pc300_t * card, int ch)
-{
- volatile pcsca_bd_t __iomem *ptdescr;
- int i;
- u16 first_bd = card->chan[ch].tx_first_bd;
- u16 next_bd = card->chan[ch].tx_next_bd;
-
- printk("#CH%d: f_bd = %d(0x%08zx), n_bd = %d(0x%08zx)\n", ch,
- first_bd, TX_BD_ADDR(ch, first_bd),
- next_bd, TX_BD_ADDR(ch, next_bd));
- for (i = first_bd,
- ptdescr = (card->hw.rambase + TX_BD_ADDR(ch, first_bd));
- i != ((next_bd + 1) & (N_DMA_TX_BUF - 1));
- i = (i + 1) & (N_DMA_TX_BUF - 1),
- ptdescr = (card->hw.rambase + TX_BD_ADDR(ch, i))) {
- printk("\n CH%d TX%d: next=0x%x, ptbuf=0x%x, ST=0x%x, len=%d",
- ch, i, cpc_readl(&ptdescr->next),
- cpc_readl(&ptdescr->ptbuf),
- cpc_readb(&ptdescr->status), cpc_readw(&ptdescr->len));
- }
- printk("\n");
-}
-
-#ifdef PC300_DEBUG_OTHER
-/* Show all TX buffer descriptors */
-static void tx1_dma_buf_check(pc300_t * card, int ch)
-{
- volatile pcsca_bd_t __iomem *ptdescr;
- int i;
- u16 first_bd = card->chan[ch].tx_first_bd;
- u16 next_bd = card->chan[ch].tx_next_bd;
- u32 scabase = card->hw.scabase;
-
- printk ("\nnfree_tx_bd = %d\n", card->chan[ch].nfree_tx_bd);
- printk("#CH%d: f_bd = %d(0x%08x), n_bd = %d(0x%08x)\n", ch,
- first_bd, TX_BD_ADDR(ch, first_bd),
- next_bd, TX_BD_ADDR(ch, next_bd));
- printk("TX_CDA=0x%08x, TX_EDA=0x%08x\n",
- cpc_readl(scabase + DTX_REG(CDAL, ch)),
- cpc_readl(scabase + DTX_REG(EDAL, ch)));
- for (i = 0; i < N_DMA_TX_BUF; i++) {
- ptdescr = (card->hw.rambase + TX_BD_ADDR(ch, i));
- printk("\n CH%d TX%d: next=0x%x, ptbuf=0x%x, ST=0x%x, len=%d",
- ch, i, cpc_readl(&ptdescr->next),
- cpc_readl(&ptdescr->ptbuf),
- cpc_readb(&ptdescr->status), cpc_readw(&ptdescr->len));
- }
- printk("\n");
-}
-#endif
-
-static void rx_dma_buf_check(pc300_t * card, int ch)
-{
- volatile pcsca_bd_t __iomem *ptdescr;
- int i;
- u16 first_bd = card->chan[ch].rx_first_bd;
- u16 last_bd = card->chan[ch].rx_last_bd;
- int ch_factor;
-
- ch_factor = ch * N_DMA_RX_BUF;
- printk("#CH%d: f_bd = %d, l_bd = %d\n", ch, first_bd, last_bd);
- for (i = 0, ptdescr = (card->hw.rambase +
- DMA_RX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
- i < N_DMA_RX_BUF; i++, ptdescr++) {
- if (cpc_readb(&ptdescr->status) & DST_OSB)
- printk ("\n CH%d RX%d: next=0x%x, ptbuf=0x%x, ST=0x%x, len=%d",
- ch, i, cpc_readl(&ptdescr->next),
- cpc_readl(&ptdescr->ptbuf),
- cpc_readb(&ptdescr->status),
- cpc_readw(&ptdescr->len));
- }
- printk("\n");
-}
-
-static int dma_get_rx_frame_size(pc300_t * card, int ch)
-{
- volatile pcsca_bd_t __iomem *ptdescr;
- u16 first_bd = card->chan[ch].rx_first_bd;
- int rcvd = 0;
- volatile u8 status;
-
- ptdescr = (card->hw.rambase + RX_BD_ADDR(ch, first_bd));
- while ((status = cpc_readb(&ptdescr->status)) & DST_OSB) {
- rcvd += cpc_readw(&ptdescr->len);
- first_bd = (first_bd + 1) & (N_DMA_RX_BUF - 1);
- if ((status & DST_EOM) || (first_bd == card->chan[ch].rx_last_bd)) {
- /* Return the size of a good frame or incomplete bad frame
- * (dma_buf_read will clean the buffer descriptors in this case). */
- return rcvd;
- }
- ptdescr = (card->hw.rambase + cpc_readl(&ptdescr->next));
- }
- return -1;
-}
-
-/*
- * dma_buf_write: writes a frame to the Tx DMA buffers
- * NOTE: this function writes one frame at a time.
- */
-static int dma_buf_write(pc300_t *card, int ch, u8 *ptdata, int len)
-{
- int i, nchar;
- volatile pcsca_bd_t __iomem *ptdescr;
- int tosend = len;
- u8 nbuf = ((len - 1) / BD_DEF_LEN) + 1;
-
- if (nbuf >= card->chan[ch].nfree_tx_bd) {
- return -ENOMEM;
- }
-
- for (i = 0; i < nbuf; i++) {
- ptdescr = (card->hw.rambase +
- TX_BD_ADDR(ch, card->chan[ch].tx_next_bd));
- nchar = cpc_min(BD_DEF_LEN, tosend);
- if (cpc_readb(&ptdescr->status) & DST_OSB) {
- memcpy_toio((card->hw.rambase + cpc_readl(&ptdescr->ptbuf)),
- &ptdata[len - tosend], nchar);
- cpc_writew(&ptdescr->len, nchar);
- card->chan[ch].nfree_tx_bd--;
- if ((i + 1) == nbuf) {
- /* This must be the last BD to be used */
- cpc_writeb(&ptdescr->status, DST_EOM);
- } else {
- cpc_writeb(&ptdescr->status, 0);
- }
- } else {
- return -ENOMEM;
- }
- tosend -= nchar;
- card->chan[ch].tx_next_bd =
- (card->chan[ch].tx_next_bd + 1) & (N_DMA_TX_BUF - 1);
- }
- /* If it gets to here, it means we have sent the whole frame */
- return 0;
-}
-
-/*
- * dma_buf_read: reads a frame from the Rx DMA buffers
- * NOTE: this function reads one frame at a time.
- */
-static int dma_buf_read(pc300_t * card, int ch, struct sk_buff *skb)
-{
- int nchar;
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- volatile pcsca_bd_t __iomem *ptdescr;
- int rcvd = 0;
- volatile u8 status;
-
- ptdescr = (card->hw.rambase +
- RX_BD_ADDR(ch, chan->rx_first_bd));
- while ((status = cpc_readb(&ptdescr->status)) & DST_OSB) {
- nchar = cpc_readw(&ptdescr->len);
- if ((status & (DST_OVR | DST_CRC | DST_RBIT | DST_SHRT | DST_ABT)) ||
- (nchar > BD_DEF_LEN)) {
-
- if (nchar > BD_DEF_LEN)
- status |= DST_RBIT;
- rcvd = -status;
- /* Discard remaining descriptors used by the bad frame */
- while (chan->rx_first_bd != chan->rx_last_bd) {
- cpc_writeb(&ptdescr->status, 0);
- chan->rx_first_bd = (chan->rx_first_bd+1) & (N_DMA_RX_BUF-1);
- if (status & DST_EOM)
- break;
- ptdescr = (card->hw.rambase +
- cpc_readl(&ptdescr->next));
- status = cpc_readb(&ptdescr->status);
- }
- break;
- }
- if (nchar != 0) {
- if (skb) {
- memcpy_fromio(skb_put(skb, nchar),
- (card->hw.rambase+cpc_readl(&ptdescr->ptbuf)),nchar);
- }
- rcvd += nchar;
- }
- cpc_writeb(&ptdescr->status, 0);
- cpc_writeb(&ptdescr->len, 0);
- chan->rx_first_bd = (chan->rx_first_bd + 1) & (N_DMA_RX_BUF - 1);
-
- if (status & DST_EOM)
- break;
-
- ptdescr = (card->hw.rambase + cpc_readl(&ptdescr->next));
- }
-
- if (rcvd != 0) {
- /* Update pointer */
- chan->rx_last_bd = (chan->rx_first_bd - 1) & (N_DMA_RX_BUF - 1);
- /* Update EDA */
- cpc_writel(card->hw.scabase + DRX_REG(EDAL, ch),
- RX_BD_ADDR(ch, chan->rx_last_bd));
- }
- return rcvd;
-}
-
-static void tx_dma_stop(pc300_t * card, int ch)
-{
- void __iomem *scabase = card->hw.scabase;
- u8 drr_ena_bit = 1 << (5 + 2 * ch);
- u8 drr_rst_bit = 1 << (1 + 2 * ch);
-
- /* Disable DMA */
- cpc_writeb(scabase + DRR, drr_ena_bit);
- cpc_writeb(scabase + DRR, drr_rst_bit & ~drr_ena_bit);
-}
-
-static void rx_dma_stop(pc300_t * card, int ch)
-{
- void __iomem *scabase = card->hw.scabase;
- u8 drr_ena_bit = 1 << (4 + 2 * ch);
- u8 drr_rst_bit = 1 << (2 * ch);
-
- /* Disable DMA */
- cpc_writeb(scabase + DRR, drr_ena_bit);
- cpc_writeb(scabase + DRR, drr_rst_bit & ~drr_ena_bit);
-}
-
-static void rx_dma_start(pc300_t * card, int ch)
-{
- void __iomem *scabase = card->hw.scabase;
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
-
- /* Start DMA */
- cpc_writel(scabase + DRX_REG(CDAL, ch),
- RX_BD_ADDR(ch, chan->rx_first_bd));
- if (cpc_readl(scabase + DRX_REG(CDAL,ch)) !=
- RX_BD_ADDR(ch, chan->rx_first_bd)) {
- cpc_writel(scabase + DRX_REG(CDAL, ch),
- RX_BD_ADDR(ch, chan->rx_first_bd));
- }
- cpc_writel(scabase + DRX_REG(EDAL, ch),
- RX_BD_ADDR(ch, chan->rx_last_bd));
- cpc_writew(scabase + DRX_REG(BFLL, ch), BD_DEF_LEN);
- cpc_writeb(scabase + DSR_RX(ch), DSR_DE);
- if (!(cpc_readb(scabase + DSR_RX(ch)) & DSR_DE)) {
- cpc_writeb(scabase + DSR_RX(ch), DSR_DE);
- }
-}
-
-/*************************/
-/*** FALC Routines ***/
-/*************************/
-static void falc_issue_cmd(pc300_t *card, int ch, u8 cmd)
-{
- void __iomem *falcbase = card->hw.falcbase;
- unsigned long i = 0;
-
- while (cpc_readb(falcbase + F_REG(SIS, ch)) & SIS_CEC) {
- if (i++ >= PC300_FALC_MAXLOOP) {
- printk("%s: FALC command locked(cmd=0x%x).\n",
- card->chan[ch].d.name, cmd);
- break;
- }
- }
- cpc_writeb(falcbase + F_REG(CMDR, ch), cmd);
-}
-
-static void falc_intr_enable(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
-
- /* Interrupt pins are open-drain */
- cpc_writeb(falcbase + F_REG(IPC, ch),
- cpc_readb(falcbase + F_REG(IPC, ch)) & ~IPC_IC0);
- /* Conters updated each second */
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_ECM);
- /* Enable SEC and ES interrupts */
- cpc_writeb(falcbase + F_REG(IMR3, ch),
- cpc_readb(falcbase + F_REG(IMR3, ch)) & ~(IMR3_SEC | IMR3_ES));
- if (conf->fr_mode == PC300_FR_UNFRAMED) {
- cpc_writeb(falcbase + F_REG(IMR4, ch),
- cpc_readb(falcbase + F_REG(IMR4, ch)) & ~(IMR4_LOS));
- } else {
- cpc_writeb(falcbase + F_REG(IMR4, ch),
- cpc_readb(falcbase + F_REG(IMR4, ch)) &
- ~(IMR4_LFA | IMR4_AIS | IMR4_LOS | IMR4_SLIP));
- }
- if (conf->media == IF_IFACE_T1) {
- cpc_writeb(falcbase + F_REG(IMR3, ch),
- cpc_readb(falcbase + F_REG(IMR3, ch)) & ~IMR3_LLBSC);
- } else {
- cpc_writeb(falcbase + F_REG(IPC, ch),
- cpc_readb(falcbase + F_REG(IPC, ch)) | IPC_SCI);
- if (conf->fr_mode == PC300_FR_UNFRAMED) {
- cpc_writeb(falcbase + F_REG(IMR2, ch),
- cpc_readb(falcbase + F_REG(IMR2, ch)) & ~(IMR2_LOS));
- } else {
- cpc_writeb(falcbase + F_REG(IMR2, ch),
- cpc_readb(falcbase + F_REG(IMR2, ch)) &
- ~(IMR2_FAR | IMR2_LFA | IMR2_AIS | IMR2_LOS));
- if (pfalc->multiframe_mode) {
- cpc_writeb(falcbase + F_REG(IMR2, ch),
- cpc_readb(falcbase + F_REG(IMR2, ch)) &
- ~(IMR2_T400MS | IMR2_MFAR));
- } else {
- cpc_writeb(falcbase + F_REG(IMR2, ch),
- cpc_readb(falcbase + F_REG(IMR2, ch)) |
- IMR2_T400MS | IMR2_MFAR);
- }
- }
- }
-}
-
-static void falc_open_timeslot(pc300_t * card, int ch, int timeslot)
-{
- void __iomem *falcbase = card->hw.falcbase;
- u8 tshf = card->chan[ch].falc.offset;
-
- cpc_writeb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch),
- cpc_readb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch)) &
- ~(0x80 >> ((timeslot - tshf) & 0x07)));
- cpc_writeb(falcbase + F_REG((TTR1 + timeslot / 8), ch),
- cpc_readb(falcbase + F_REG((TTR1 + timeslot / 8), ch)) |
- (0x80 >> (timeslot & 0x07)));
- cpc_writeb(falcbase + F_REG((RTR1 + timeslot / 8), ch),
- cpc_readb(falcbase + F_REG((RTR1 + timeslot / 8), ch)) |
- (0x80 >> (timeslot & 0x07)));
-}
-
-static void falc_close_timeslot(pc300_t * card, int ch, int timeslot)
-{
- void __iomem *falcbase = card->hw.falcbase;
- u8 tshf = card->chan[ch].falc.offset;
-
- cpc_writeb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch),
- cpc_readb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch)) |
- (0x80 >> ((timeslot - tshf) & 0x07)));
- cpc_writeb(falcbase + F_REG((TTR1 + timeslot / 8), ch),
- cpc_readb(falcbase + F_REG((TTR1 + timeslot / 8), ch)) &
- ~(0x80 >> (timeslot & 0x07)));
- cpc_writeb(falcbase + F_REG((RTR1 + timeslot / 8), ch),
- cpc_readb(falcbase + F_REG((RTR1 + timeslot / 8), ch)) &
- ~(0x80 >> (timeslot & 0x07)));
-}
-
-static void falc_close_all_timeslots(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- void __iomem *falcbase = card->hw.falcbase;
-
- cpc_writeb(falcbase + F_REG(ICB1, ch), 0xff);
- cpc_writeb(falcbase + F_REG(TTR1, ch), 0);
- cpc_writeb(falcbase + F_REG(RTR1, ch), 0);
- cpc_writeb(falcbase + F_REG(ICB2, ch), 0xff);
- cpc_writeb(falcbase + F_REG(TTR2, ch), 0);
- cpc_writeb(falcbase + F_REG(RTR2, ch), 0);
- cpc_writeb(falcbase + F_REG(ICB3, ch), 0xff);
- cpc_writeb(falcbase + F_REG(TTR3, ch), 0);
- cpc_writeb(falcbase + F_REG(RTR3, ch), 0);
- if (conf->media == IF_IFACE_E1) {
- cpc_writeb(falcbase + F_REG(ICB4, ch), 0xff);
- cpc_writeb(falcbase + F_REG(TTR4, ch), 0);
- cpc_writeb(falcbase + F_REG(RTR4, ch), 0);
- }
-}
-
-static void falc_open_all_timeslots(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- void __iomem *falcbase = card->hw.falcbase;
-
- cpc_writeb(falcbase + F_REG(ICB1, ch), 0);
- if (conf->fr_mode == PC300_FR_UNFRAMED) {
- cpc_writeb(falcbase + F_REG(TTR1, ch), 0xff);
- cpc_writeb(falcbase + F_REG(RTR1, ch), 0xff);
- } else {
- /* Timeslot 0 is never enabled */
- cpc_writeb(falcbase + F_REG(TTR1, ch), 0x7f);
- cpc_writeb(falcbase + F_REG(RTR1, ch), 0x7f);
- }
- cpc_writeb(falcbase + F_REG(ICB2, ch), 0);
- cpc_writeb(falcbase + F_REG(TTR2, ch), 0xff);
- cpc_writeb(falcbase + F_REG(RTR2, ch), 0xff);
- cpc_writeb(falcbase + F_REG(ICB3, ch), 0);
- cpc_writeb(falcbase + F_REG(TTR3, ch), 0xff);
- cpc_writeb(falcbase + F_REG(RTR3, ch), 0xff);
- if (conf->media == IF_IFACE_E1) {
- cpc_writeb(falcbase + F_REG(ICB4, ch), 0);
- cpc_writeb(falcbase + F_REG(TTR4, ch), 0xff);
- cpc_writeb(falcbase + F_REG(RTR4, ch), 0xff);
- } else {
- cpc_writeb(falcbase + F_REG(ICB4, ch), 0xff);
- cpc_writeb(falcbase + F_REG(TTR4, ch), 0x80);
- cpc_writeb(falcbase + F_REG(RTR4, ch), 0x80);
- }
-}
-
-static void falc_init_timeslot(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- int tslot;
-
- for (tslot = 0; tslot < pfalc->num_channels; tslot++) {
- if (conf->tslot_bitmap & (1 << tslot)) {
- // Channel enabled
- falc_open_timeslot(card, ch, tslot + 1);
- } else {
- // Channel disabled
- falc_close_timeslot(card, ch, tslot + 1);
- }
- }
-}
-
-static void falc_enable_comm(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- falc_t *pfalc = (falc_t *) & chan->falc;
-
- if (pfalc->full_bandwidth) {
- falc_open_all_timeslots(card, ch);
- } else {
- falc_init_timeslot(card, ch);
- }
- // CTS/DCD ON
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) &
- ~((CPLD_REG1_FALC_DCD | CPLD_REG1_FALC_CTS) << (2 * ch)));
-}
-
-static void falc_disable_comm(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- falc_t *pfalc = (falc_t *) & chan->falc;
-
- if (pfalc->loop_active != 2) {
- falc_close_all_timeslots(card, ch);
- }
- // CTS/DCD OFF
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
- ((CPLD_REG1_FALC_DCD | CPLD_REG1_FALC_CTS) << (2 * ch)));
-}
-
-static void falc_init_t1(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
- u8 dja = (ch ? (LIM2_DJA2 | LIM2_DJA1) : 0);
-
- /* Switch to T1 mode (PCM 24) */
- cpc_writeb(falcbase + F_REG(FMR1, ch), FMR1_PMOD);
-
- /* Wait 20 us for setup */
- udelay(20);
-
- /* Transmit Buffer Size (1 frame) */
- cpc_writeb(falcbase + F_REG(SIC1, ch), SIC1_XBS0);
-
- /* Clock mode */
- if (conf->phys_settings.clock_type == CLOCK_INT) { /* Master mode */
- cpc_writeb(falcbase + F_REG(LIM0, ch),
- cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_MAS);
- } else { /* Slave mode */
- cpc_writeb(falcbase + F_REG(LIM0, ch),
- cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_MAS);
- cpc_writeb(falcbase + F_REG(LOOP, ch),
- cpc_readb(falcbase + F_REG(LOOP, ch)) & ~LOOP_RTM);
- }
-
- cpc_writeb(falcbase + F_REG(IPC, ch), IPC_SCI);
- cpc_writeb(falcbase + F_REG(FMR0, ch),
- cpc_readb(falcbase + F_REG(FMR0, ch)) &
- ~(FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1));
-
- switch (conf->lcode) {
- case PC300_LC_AMI:
- cpc_writeb(falcbase + F_REG(FMR0, ch),
- cpc_readb(falcbase + F_REG(FMR0, ch)) |
- FMR0_XC1 | FMR0_RC1);
- /* Clear Channel register to ON for all channels */
- cpc_writeb(falcbase + F_REG(CCB1, ch), 0xff);
- cpc_writeb(falcbase + F_REG(CCB2, ch), 0xff);
- cpc_writeb(falcbase + F_REG(CCB3, ch), 0xff);
- break;
-
- case PC300_LC_B8ZS:
- cpc_writeb(falcbase + F_REG(FMR0, ch),
- cpc_readb(falcbase + F_REG(FMR0, ch)) |
- FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1);
- break;
-
- case PC300_LC_NRZ:
- cpc_writeb(falcbase + F_REG(FMR0, ch),
- cpc_readb(falcbase + F_REG(FMR0, ch)) | 0x00);
- break;
- }
-
- cpc_writeb(falcbase + F_REG(LIM0, ch),
- cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_ELOS);
- cpc_writeb(falcbase + F_REG(LIM0, ch),
- cpc_readb(falcbase + F_REG(LIM0, ch)) & ~(LIM0_SCL1 | LIM0_SCL0));
- /* Set interface mode to 2 MBPS */
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_IMOD);
-
- switch (conf->fr_mode) {
- case PC300_FR_ESF:
- pfalc->multiframe_mode = 0;
- cpc_writeb(falcbase + F_REG(FMR4, ch),
- cpc_readb(falcbase + F_REG(FMR4, ch)) | FMR4_FM1);
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) |
- FMR1_CRC | FMR1_EDL);
- cpc_writeb(falcbase + F_REG(XDL1, ch), 0);
- cpc_writeb(falcbase + F_REG(XDL2, ch), 0);
- cpc_writeb(falcbase + F_REG(XDL3, ch), 0);
- cpc_writeb(falcbase + F_REG(FMR0, ch),
- cpc_readb(falcbase + F_REG(FMR0, ch)) & ~FMR0_SRAF);
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2,ch)) | FMR2_MCSP | FMR2_SSP);
- break;
-
- case PC300_FR_D4:
- pfalc->multiframe_mode = 1;
- cpc_writeb(falcbase + F_REG(FMR4, ch),
- cpc_readb(falcbase + F_REG(FMR4, ch)) &
- ~(FMR4_FM1 | FMR4_FM0));
- cpc_writeb(falcbase + F_REG(FMR0, ch),
- cpc_readb(falcbase + F_REG(FMR0, ch)) | FMR0_SRAF);
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_SSP);
- break;
- }
-
- /* Enable Automatic Resynchronization */
- cpc_writeb(falcbase + F_REG(FMR4, ch),
- cpc_readb(falcbase + F_REG(FMR4, ch)) | FMR4_AUTO);
-
- /* Transmit Automatic Remote Alarm */
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_AXRA);
-
- /* Channel translation mode 1 : one to one */
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_CTM);
-
- /* No signaling */
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_SIGM);
- cpc_writeb(falcbase + F_REG(FMR5, ch),
- cpc_readb(falcbase + F_REG(FMR5, ch)) &
- ~(FMR5_EIBR | FMR5_SRS));
- cpc_writeb(falcbase + F_REG(CCR1, ch), 0);
-
- cpc_writeb(falcbase + F_REG(LIM1, ch),
- cpc_readb(falcbase + F_REG(LIM1, ch)) | LIM1_RIL0 | LIM1_RIL1);
-
- switch (conf->lbo) {
- /* Provides proper Line Build Out */
- case PC300_LBO_0_DB:
- cpc_writeb(falcbase + F_REG(LIM2, ch), (LIM2_LOS1 | dja));
- cpc_writeb(falcbase + F_REG(XPM0, ch), 0x5a);
- cpc_writeb(falcbase + F_REG(XPM1, ch), 0x8f);
- cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
- break;
- case PC300_LBO_7_5_DB:
- cpc_writeb(falcbase + F_REG(LIM2, ch), (0x40 | LIM2_LOS1 | dja));
- cpc_writeb(falcbase + F_REG(XPM0, ch), 0x11);
- cpc_writeb(falcbase + F_REG(XPM1, ch), 0x02);
- cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
- break;
- case PC300_LBO_15_DB:
- cpc_writeb(falcbase + F_REG(LIM2, ch), (0x80 | LIM2_LOS1 | dja));
- cpc_writeb(falcbase + F_REG(XPM0, ch), 0x8e);
- cpc_writeb(falcbase + F_REG(XPM1, ch), 0x01);
- cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
- break;
- case PC300_LBO_22_5_DB:
- cpc_writeb(falcbase + F_REG(LIM2, ch), (0xc0 | LIM2_LOS1 | dja));
- cpc_writeb(falcbase + F_REG(XPM0, ch), 0x09);
- cpc_writeb(falcbase + F_REG(XPM1, ch), 0x01);
- cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
- break;
- }
-
- /* Transmit Clock-Slot Offset */
- cpc_writeb(falcbase + F_REG(XC0, ch),
- cpc_readb(falcbase + F_REG(XC0, ch)) | 0x01);
- /* Transmit Time-slot Offset */
- cpc_writeb(falcbase + F_REG(XC1, ch), 0x3e);
- /* Receive Clock-Slot offset */
- cpc_writeb(falcbase + F_REG(RC0, ch), 0x05);
- /* Receive Time-slot offset */
- cpc_writeb(falcbase + F_REG(RC1, ch), 0x00);
-
- /* LOS Detection after 176 consecutive 0s */
- cpc_writeb(falcbase + F_REG(PCDR, ch), 0x0a);
- /* LOS Recovery after 22 ones in the time window of PCD */
- cpc_writeb(falcbase + F_REG(PCRR, ch), 0x15);
-
- cpc_writeb(falcbase + F_REG(IDLE, ch), 0x7f);
-
- if (conf->fr_mode == PC300_FR_ESF_JAPAN) {
- cpc_writeb(falcbase + F_REG(RC1, ch),
- cpc_readb(falcbase + F_REG(RC1, ch)) | 0x80);
- }
-
- falc_close_all_timeslots(card, ch);
-}
-
-static void falc_init_e1(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
- u8 dja = (ch ? (LIM2_DJA2 | LIM2_DJA1) : 0);
-
- /* Switch to E1 mode (PCM 30) */
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_PMOD);
-
- /* Clock mode */
- if (conf->phys_settings.clock_type == CLOCK_INT) { /* Master mode */
- cpc_writeb(falcbase + F_REG(LIM0, ch),
- cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_MAS);
- } else { /* Slave mode */
- cpc_writeb(falcbase + F_REG(LIM0, ch),
- cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_MAS);
- }
- cpc_writeb(falcbase + F_REG(LOOP, ch),
- cpc_readb(falcbase + F_REG(LOOP, ch)) & ~LOOP_SFM);
-
- cpc_writeb(falcbase + F_REG(IPC, ch), IPC_SCI);
- cpc_writeb(falcbase + F_REG(FMR0, ch),
- cpc_readb(falcbase + F_REG(FMR0, ch)) &
- ~(FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1));
-
- switch (conf->lcode) {
- case PC300_LC_AMI:
- cpc_writeb(falcbase + F_REG(FMR0, ch),
- cpc_readb(falcbase + F_REG(FMR0, ch)) |
- FMR0_XC1 | FMR0_RC1);
- break;
-
- case PC300_LC_HDB3:
- cpc_writeb(falcbase + F_REG(FMR0, ch),
- cpc_readb(falcbase + F_REG(FMR0, ch)) |
- FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1);
- break;
-
- case PC300_LC_NRZ:
- break;
- }
-
- cpc_writeb(falcbase + F_REG(LIM0, ch),
- cpc_readb(falcbase + F_REG(LIM0, ch)) & ~(LIM0_SCL1 | LIM0_SCL0));
- /* Set interface mode to 2 MBPS */
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_IMOD);
-
- cpc_writeb(falcbase + F_REG(XPM0, ch), 0x18);
- cpc_writeb(falcbase + F_REG(XPM1, ch), 0x03);
- cpc_writeb(falcbase + F_REG(XPM2, ch), 0x00);
-
- switch (conf->fr_mode) {
- case PC300_FR_MF_CRC4:
- pfalc->multiframe_mode = 1;
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_XFS);
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_RFS1);
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_RFS0);
- cpc_writeb(falcbase + F_REG(FMR3, ch),
- cpc_readb(falcbase + F_REG(FMR3, ch)) & ~FMR3_EXTIW);
-
- /* MultiFrame Resynchronization */
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_MFCS);
-
- /* Automatic Loss of Multiframe > 914 CRC errors */
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_ALMF);
-
- /* S1 and SI1/SI2 spare Bits set to 1 */
- cpc_writeb(falcbase + F_REG(XSP, ch),
- cpc_readb(falcbase + F_REG(XSP, ch)) & ~XSP_AXS);
- cpc_writeb(falcbase + F_REG(XSP, ch),
- cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_EBP);
- cpc_writeb(falcbase + F_REG(XSP, ch),
- cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_XS13 | XSP_XS15);
-
- /* Automatic Force Resynchronization */
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_AFR);
-
- /* Transmit Automatic Remote Alarm */
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_AXRA);
-
- /* Transmit Spare Bits for National Use (Y, Sn, Sa) */
- cpc_writeb(falcbase + F_REG(XSW, ch),
- cpc_readb(falcbase + F_REG(XSW, ch)) |
- XSW_XY0 | XSW_XY1 | XSW_XY2 | XSW_XY3 | XSW_XY4);
- break;
-
- case PC300_FR_MF_NON_CRC4:
- case PC300_FR_D4:
- pfalc->multiframe_mode = 0;
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_XFS);
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) &
- ~(FMR2_RFS1 | FMR2_RFS0));
- cpc_writeb(falcbase + F_REG(XSW, ch),
- cpc_readb(falcbase + F_REG(XSW, ch)) | XSW_XSIS);
- cpc_writeb(falcbase + F_REG(XSP, ch),
- cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_XSIF);
-
- /* Automatic Force Resynchronization */
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_AFR);
-
- /* Transmit Automatic Remote Alarm */
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_AXRA);
-
- /* Transmit Spare Bits for National Use (Y, Sn, Sa) */
- cpc_writeb(falcbase + F_REG(XSW, ch),
- cpc_readb(falcbase + F_REG(XSW, ch)) |
- XSW_XY0 | XSW_XY1 | XSW_XY2 | XSW_XY3 | XSW_XY4);
- break;
-
- case PC300_FR_UNFRAMED:
- pfalc->multiframe_mode = 0;
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_XFS);
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) &
- ~(FMR2_RFS1 | FMR2_RFS0));
- cpc_writeb(falcbase + F_REG(XSP, ch),
- cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_TT0);
- cpc_writeb(falcbase + F_REG(XSW, ch),
- cpc_readb(falcbase + F_REG(XSW, ch)) &
- ~(XSW_XTM|XSW_XY0|XSW_XY1|XSW_XY2|XSW_XY3|XSW_XY4));
- cpc_writeb(falcbase + F_REG(TSWM, ch), 0xff);
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) |
- (FMR2_RTM | FMR2_DAIS));
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_AXRA);
- cpc_writeb(falcbase + F_REG(FMR1, ch),
- cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_AFR);
- pfalc->sync = 1;
- cpc_writeb(falcbase + card->hw.cpld_reg2,
- cpc_readb(falcbase + card->hw.cpld_reg2) |
- (CPLD_REG2_FALC_LED2 << (2 * ch)));
- break;
- }
-
- /* No signaling */
- cpc_writeb(falcbase + F_REG(XSP, ch),
- cpc_readb(falcbase + F_REG(XSP, ch)) & ~XSP_CASEN);
- cpc_writeb(falcbase + F_REG(CCR1, ch), 0);
-
- cpc_writeb(falcbase + F_REG(LIM1, ch),
- cpc_readb(falcbase + F_REG(LIM1, ch)) | LIM1_RIL0 | LIM1_RIL1);
- cpc_writeb(falcbase + F_REG(LIM2, ch), (LIM2_LOS1 | dja));
-
- /* Transmit Clock-Slot Offset */
- cpc_writeb(falcbase + F_REG(XC0, ch),
- cpc_readb(falcbase + F_REG(XC0, ch)) | 0x01);
- /* Transmit Time-slot Offset */
- cpc_writeb(falcbase + F_REG(XC1, ch), 0x3e);
- /* Receive Clock-Slot offset */
- cpc_writeb(falcbase + F_REG(RC0, ch), 0x05);
- /* Receive Time-slot offset */
- cpc_writeb(falcbase + F_REG(RC1, ch), 0x00);
-
- /* LOS Detection after 176 consecutive 0s */
- cpc_writeb(falcbase + F_REG(PCDR, ch), 0x0a);
- /* LOS Recovery after 22 ones in the time window of PCD */
- cpc_writeb(falcbase + F_REG(PCRR, ch), 0x15);
-
- cpc_writeb(falcbase + F_REG(IDLE, ch), 0x7f);
-
- falc_close_all_timeslots(card, ch);
-}
-
-static void falc_init_hdlc(pc300_t * card, int ch)
-{
- void __iomem *falcbase = card->hw.falcbase;
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
-
- /* Enable transparent data transfer */
- if (conf->fr_mode == PC300_FR_UNFRAMED) {
- cpc_writeb(falcbase + F_REG(MODE, ch), 0);
- } else {
- cpc_writeb(falcbase + F_REG(MODE, ch),
- cpc_readb(falcbase + F_REG(MODE, ch)) |
- (MODE_HRAC | MODE_MDS2));
- cpc_writeb(falcbase + F_REG(RAH2, ch), 0xff);
- cpc_writeb(falcbase + F_REG(RAH1, ch), 0xff);
- cpc_writeb(falcbase + F_REG(RAL2, ch), 0xff);
- cpc_writeb(falcbase + F_REG(RAL1, ch), 0xff);
- }
-
- /* Tx/Rx reset */
- falc_issue_cmd(card, ch, CMDR_RRES | CMDR_XRES | CMDR_SRES);
-
- /* Enable interrupt sources */
- falc_intr_enable(card, ch);
-}
-
-static void te_config(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
- u8 dummy;
- unsigned long flags;
-
- memset(pfalc, 0, sizeof(falc_t));
- switch (conf->media) {
- case IF_IFACE_T1:
- pfalc->num_channels = NUM_OF_T1_CHANNELS;
- pfalc->offset = 1;
- break;
- case IF_IFACE_E1:
- pfalc->num_channels = NUM_OF_E1_CHANNELS;
- pfalc->offset = 0;
- break;
- }
- if (conf->tslot_bitmap == 0xffffffffUL)
- pfalc->full_bandwidth = 1;
- else
- pfalc->full_bandwidth = 0;
-
- CPC_LOCK(card, flags);
- /* Reset the FALC chip */
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
- (CPLD_REG1_FALC_RESET << (2 * ch)));
- udelay(10000);
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) &
- ~(CPLD_REG1_FALC_RESET << (2 * ch)));
-
- if (conf->media == IF_IFACE_T1) {
- falc_init_t1(card, ch);
- } else {
- falc_init_e1(card, ch);
- }
- falc_init_hdlc(card, ch);
- if (conf->rx_sens == PC300_RX_SENS_SH) {
- cpc_writeb(falcbase + F_REG(LIM0, ch),
- cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_EQON);
- } else {
- cpc_writeb(falcbase + F_REG(LIM0, ch),
- cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_EQON);
- }
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) |
- ((CPLD_REG2_FALC_TX_CLK | CPLD_REG2_FALC_RX_CLK) << (2 * ch)));
-
- /* Clear all interrupt registers */
- dummy = cpc_readb(falcbase + F_REG(FISR0, ch)) +
- cpc_readb(falcbase + F_REG(FISR1, ch)) +
- cpc_readb(falcbase + F_REG(FISR2, ch)) +
- cpc_readb(falcbase + F_REG(FISR3, ch));
- CPC_UNLOCK(card, flags);
-}
-
-static void falc_check_status(pc300_t * card, int ch, unsigned char frs0)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
-
- /* Verify LOS */
- if (frs0 & FRS0_LOS) {
- if (!pfalc->red_alarm) {
- pfalc->red_alarm = 1;
- pfalc->los++;
- if (!pfalc->blue_alarm) {
- // EVENT_FALC_ABNORMAL
- if (conf->media == IF_IFACE_T1) {
- /* Disable this interrupt as it may otherwise interfere
- * with other working boards. */
- cpc_writeb(falcbase + F_REG(IMR0, ch),
- cpc_readb(falcbase + F_REG(IMR0, ch))
- | IMR0_PDEN);
- }
- falc_disable_comm(card, ch);
- // EVENT_FALC_ABNORMAL
- }
- }
- } else {
- if (pfalc->red_alarm) {
- pfalc->red_alarm = 0;
- pfalc->losr++;
- }
- }
-
- if (conf->fr_mode != PC300_FR_UNFRAMED) {
- /* Verify AIS alarm */
- if (frs0 & FRS0_AIS) {
- if (!pfalc->blue_alarm) {
- pfalc->blue_alarm = 1;
- pfalc->ais++;
- // EVENT_AIS
- if (conf->media == IF_IFACE_T1) {
- /* Disable this interrupt as it may otherwise interfere with other working boards. */
- cpc_writeb(falcbase + F_REG(IMR0, ch),
- cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
- }
- falc_disable_comm(card, ch);
- // EVENT_AIS
- }
- } else {
- pfalc->blue_alarm = 0;
- }
-
- /* Verify LFA */
- if (frs0 & FRS0_LFA) {
- if (!pfalc->loss_fa) {
- pfalc->loss_fa = 1;
- pfalc->lfa++;
- if (!pfalc->blue_alarm && !pfalc->red_alarm) {
- // EVENT_FALC_ABNORMAL
- if (conf->media == IF_IFACE_T1) {
- /* Disable this interrupt as it may otherwise
- * interfere with other working boards. */
- cpc_writeb(falcbase + F_REG(IMR0, ch),
- cpc_readb(falcbase + F_REG(IMR0, ch))
- | IMR0_PDEN);
- }
- falc_disable_comm(card, ch);
- // EVENT_FALC_ABNORMAL
- }
- }
- } else {
- if (pfalc->loss_fa) {
- pfalc->loss_fa = 0;
- pfalc->farec++;
- }
- }
-
- /* Verify LMFA */
- if (pfalc->multiframe_mode && (frs0 & FRS0_LMFA)) {
- /* D4 or CRC4 frame mode */
- if (!pfalc->loss_mfa) {
- pfalc->loss_mfa = 1;
- pfalc->lmfa++;
- if (!pfalc->blue_alarm && !pfalc->red_alarm &&
- !pfalc->loss_fa) {
- // EVENT_FALC_ABNORMAL
- if (conf->media == IF_IFACE_T1) {
- /* Disable this interrupt as it may otherwise
- * interfere with other working boards. */
- cpc_writeb(falcbase + F_REG(IMR0, ch),
- cpc_readb(falcbase + F_REG(IMR0, ch))
- | IMR0_PDEN);
- }
- falc_disable_comm(card, ch);
- // EVENT_FALC_ABNORMAL
- }
- }
- } else {
- pfalc->loss_mfa = 0;
- }
-
- /* Verify Remote Alarm */
- if (frs0 & FRS0_RRA) {
- if (!pfalc->yellow_alarm) {
- pfalc->yellow_alarm = 1;
- pfalc->rai++;
- if (pfalc->sync) {
- // EVENT_RAI
- falc_disable_comm(card, ch);
- // EVENT_RAI
- }
- }
- } else {
- pfalc->yellow_alarm = 0;
- }
- } /* if !PC300_UNFRAMED */
-
- if (pfalc->red_alarm || pfalc->loss_fa ||
- pfalc->loss_mfa || pfalc->blue_alarm) {
- if (pfalc->sync) {
- pfalc->sync = 0;
- chan->d.line_off++;
- cpc_writeb(falcbase + card->hw.cpld_reg2,
- cpc_readb(falcbase + card->hw.cpld_reg2) &
- ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
- }
- } else {
- if (!pfalc->sync) {
- pfalc->sync = 1;
- chan->d.line_on++;
- cpc_writeb(falcbase + card->hw.cpld_reg2,
- cpc_readb(falcbase + card->hw.cpld_reg2) |
- (CPLD_REG2_FALC_LED2 << (2 * ch)));
- }
- }
-
- if (pfalc->sync && !pfalc->yellow_alarm) {
- if (!pfalc->active) {
- // EVENT_FALC_NORMAL
- if (pfalc->loop_active) {
- return;
- }
- if (conf->media == IF_IFACE_T1) {
- cpc_writeb(falcbase + F_REG(IMR0, ch),
- cpc_readb(falcbase + F_REG(IMR0, ch)) & ~IMR0_PDEN);
- }
- falc_enable_comm(card, ch);
- // EVENT_FALC_NORMAL
- pfalc->active = 1;
- }
- } else {
- if (pfalc->active) {
- pfalc->active = 0;
- }
- }
-}
-
-static void falc_update_stats(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
- u16 counter;
-
- counter = cpc_readb(falcbase + F_REG(FECL, ch));
- counter |= cpc_readb(falcbase + F_REG(FECH, ch)) << 8;
- pfalc->fec += counter;
-
- counter = cpc_readb(falcbase + F_REG(CVCL, ch));
- counter |= cpc_readb(falcbase + F_REG(CVCH, ch)) << 8;
- pfalc->cvc += counter;
-
- counter = cpc_readb(falcbase + F_REG(CECL, ch));
- counter |= cpc_readb(falcbase + F_REG(CECH, ch)) << 8;
- pfalc->cec += counter;
-
- counter = cpc_readb(falcbase + F_REG(EBCL, ch));
- counter |= cpc_readb(falcbase + F_REG(EBCH, ch)) << 8;
- pfalc->ebc += counter;
-
- if (cpc_readb(falcbase + F_REG(LCR1, ch)) & LCR1_EPRM) {
- mdelay(10);
- counter = cpc_readb(falcbase + F_REG(BECL, ch));
- counter |= cpc_readb(falcbase + F_REG(BECH, ch)) << 8;
- pfalc->bec += counter;
-
- if (((conf->media == IF_IFACE_T1) &&
- (cpc_readb(falcbase + F_REG(FRS1, ch)) & FRS1_LLBAD) &&
- (!(cpc_readb(falcbase + F_REG(FRS1, ch)) & FRS1_PDEN))) ||
- ((conf->media == IF_IFACE_E1) &&
- (cpc_readb(falcbase + F_REG(RSP, ch)) & RSP_LLBAD))) {
- pfalc->prbs = 2;
- } else {
- pfalc->prbs = 1;
- }
- }
-}
-
-/*----------------------------------------------------------------------------
- * falc_remote_loop
- *----------------------------------------------------------------------------
- * Description: In the remote loopback mode the clock and data recovered
- * from the line inputs RL1/2 or RDIP/RDIN are routed back
- * to the line outputs XL1/2 or XDOP/XDON via the analog
- * transmitter. As in normal mode they are processed by
- * the synchronizer and then sent to the system interface.
- *----------------------------------------------------------------------------
- */
-static void falc_remote_loop(pc300_t * card, int ch, int loop_on)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
-
- if (loop_on) {
- // EVENT_FALC_ABNORMAL
- if (conf->media == IF_IFACE_T1) {
- /* Disable this interrupt as it may otherwise interfere with
- * other working boards. */
- cpc_writeb(falcbase + F_REG(IMR0, ch),
- cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
- }
- falc_disable_comm(card, ch);
- // EVENT_FALC_ABNORMAL
- cpc_writeb(falcbase + F_REG(LIM1, ch),
- cpc_readb(falcbase + F_REG(LIM1, ch)) | LIM1_RL);
- pfalc->loop_active = 1;
- } else {
- cpc_writeb(falcbase + F_REG(LIM1, ch),
- cpc_readb(falcbase + F_REG(LIM1, ch)) & ~LIM1_RL);
- pfalc->sync = 0;
- cpc_writeb(falcbase + card->hw.cpld_reg2,
- cpc_readb(falcbase + card->hw.cpld_reg2) &
- ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
- pfalc->active = 0;
- falc_issue_cmd(card, ch, CMDR_XRES);
- pfalc->loop_active = 0;
- }
-}
-
-/*----------------------------------------------------------------------------
- * falc_local_loop
- *----------------------------------------------------------------------------
- * Description: The local loopback mode disconnects the receive lines
- * RL1/RL2 resp. RDIP/RDIN from the receiver. Instead of the
- * signals coming from the line the data provided by system
- * interface are routed through the analog receiver back to
- * the system interface. The unipolar bit stream will be
- * undisturbed transmitted on the line. Receiver and transmitter
- * coding must be identical.
- *----------------------------------------------------------------------------
- */
-static void falc_local_loop(pc300_t * card, int ch, int loop_on)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
-
- if (loop_on) {
- cpc_writeb(falcbase + F_REG(LIM0, ch),
- cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_LL);
- pfalc->loop_active = 1;
- } else {
- cpc_writeb(falcbase + F_REG(LIM0, ch),
- cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_LL);
- pfalc->loop_active = 0;
- }
-}
-
-/*----------------------------------------------------------------------------
- * falc_payload_loop
- *----------------------------------------------------------------------------
- * Description: This routine allows to enable/disable payload loopback.
- * When the payload loop is activated, the received 192 bits
- * of payload data will be looped back to the transmit
- * direction. The framing bits, CRC6 and DL bits are not
- * looped. They are originated by the FALC-LH transmitter.
- *----------------------------------------------------------------------------
- */
-static void falc_payload_loop(pc300_t * card, int ch, int loop_on)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
-
- if (loop_on) {
- // EVENT_FALC_ABNORMAL
- if (conf->media == IF_IFACE_T1) {
- /* Disable this interrupt as it may otherwise interfere with
- * other working boards. */
- cpc_writeb(falcbase + F_REG(IMR0, ch),
- cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
- }
- falc_disable_comm(card, ch);
- // EVENT_FALC_ABNORMAL
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_PLB);
- if (conf->media == IF_IFACE_T1) {
- cpc_writeb(falcbase + F_REG(FMR4, ch),
- cpc_readb(falcbase + F_REG(FMR4, ch)) | FMR4_TM);
- } else {
- cpc_writeb(falcbase + F_REG(FMR5, ch),
- cpc_readb(falcbase + F_REG(FMR5, ch)) | XSP_TT0);
- }
- falc_open_all_timeslots(card, ch);
- pfalc->loop_active = 2;
- } else {
- cpc_writeb(falcbase + F_REG(FMR2, ch),
- cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_PLB);
- if (conf->media == IF_IFACE_T1) {
- cpc_writeb(falcbase + F_REG(FMR4, ch),
- cpc_readb(falcbase + F_REG(FMR4, ch)) & ~FMR4_TM);
- } else {
- cpc_writeb(falcbase + F_REG(FMR5, ch),
- cpc_readb(falcbase + F_REG(FMR5, ch)) & ~XSP_TT0);
- }
- pfalc->sync = 0;
- cpc_writeb(falcbase + card->hw.cpld_reg2,
- cpc_readb(falcbase + card->hw.cpld_reg2) &
- ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
- pfalc->active = 0;
- falc_issue_cmd(card, ch, CMDR_XRES);
- pfalc->loop_active = 0;
- }
-}
-
-/*----------------------------------------------------------------------------
- * turn_off_xlu
- *----------------------------------------------------------------------------
- * Description: Turns XLU bit off in the proper register
- *----------------------------------------------------------------------------
- */
-static void turn_off_xlu(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- void __iomem *falcbase = card->hw.falcbase;
-
- if (conf->media == IF_IFACE_T1) {
- cpc_writeb(falcbase + F_REG(FMR5, ch),
- cpc_readb(falcbase + F_REG(FMR5, ch)) & ~FMR5_XLU);
- } else {
- cpc_writeb(falcbase + F_REG(FMR3, ch),
- cpc_readb(falcbase + F_REG(FMR3, ch)) & ~FMR3_XLU);
- }
-}
-
-/*----------------------------------------------------------------------------
- * turn_off_xld
- *----------------------------------------------------------------------------
- * Description: Turns XLD bit off in the proper register
- *----------------------------------------------------------------------------
- */
-static void turn_off_xld(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- void __iomem *falcbase = card->hw.falcbase;
-
- if (conf->media == IF_IFACE_T1) {
- cpc_writeb(falcbase + F_REG(FMR5, ch),
- cpc_readb(falcbase + F_REG(FMR5, ch)) & ~FMR5_XLD);
- } else {
- cpc_writeb(falcbase + F_REG(FMR3, ch),
- cpc_readb(falcbase + F_REG(FMR3, ch)) & ~FMR3_XLD);
- }
-}
-
-/*----------------------------------------------------------------------------
- * falc_generate_loop_up_code
- *----------------------------------------------------------------------------
- * Description: This routine writes the proper FALC chip register in order
- * to generate a LOOP activation code over a T1/E1 line.
- *----------------------------------------------------------------------------
- */
-static void falc_generate_loop_up_code(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
-
- if (conf->media == IF_IFACE_T1) {
- cpc_writeb(falcbase + F_REG(FMR5, ch),
- cpc_readb(falcbase + F_REG(FMR5, ch)) | FMR5_XLU);
- } else {
- cpc_writeb(falcbase + F_REG(FMR3, ch),
- cpc_readb(falcbase + F_REG(FMR3, ch)) | FMR3_XLU);
- }
- // EVENT_FALC_ABNORMAL
- if (conf->media == IF_IFACE_T1) {
- /* Disable this interrupt as it may otherwise interfere with
- * other working boards. */
- cpc_writeb(falcbase + F_REG(IMR0, ch),
- cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
- }
- falc_disable_comm(card, ch);
- // EVENT_FALC_ABNORMAL
- pfalc->loop_gen = 1;
-}
-
-/*----------------------------------------------------------------------------
- * falc_generate_loop_down_code
- *----------------------------------------------------------------------------
- * Description: This routine writes the proper FALC chip register in order
- * to generate a LOOP deactivation code over a T1/E1 line.
- *----------------------------------------------------------------------------
- */
-static void falc_generate_loop_down_code(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
-
- if (conf->media == IF_IFACE_T1) {
- cpc_writeb(falcbase + F_REG(FMR5, ch),
- cpc_readb(falcbase + F_REG(FMR5, ch)) | FMR5_XLD);
- } else {
- cpc_writeb(falcbase + F_REG(FMR3, ch),
- cpc_readb(falcbase + F_REG(FMR3, ch)) | FMR3_XLD);
- }
- pfalc->sync = 0;
- cpc_writeb(falcbase + card->hw.cpld_reg2,
- cpc_readb(falcbase + card->hw.cpld_reg2) &
- ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
- pfalc->active = 0;
-//? falc_issue_cmd(card, ch, CMDR_XRES);
- pfalc->loop_gen = 0;
-}
-
-/*----------------------------------------------------------------------------
- * falc_pattern_test
- *----------------------------------------------------------------------------
- * Description: This routine generates a pattern code and checks
- * it on the reception side.
- *----------------------------------------------------------------------------
- */
-static void falc_pattern_test(pc300_t * card, int ch, unsigned int activate)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
-
- if (activate) {
- pfalc->prbs = 1;
- pfalc->bec = 0;
- if (conf->media == IF_IFACE_T1) {
- /* Disable local loop activation/deactivation detect */
- cpc_writeb(falcbase + F_REG(IMR3, ch),
- cpc_readb(falcbase + F_REG(IMR3, ch)) | IMR3_LLBSC);
- } else {
- /* Disable local loop activation/deactivation detect */
- cpc_writeb(falcbase + F_REG(IMR1, ch),
- cpc_readb(falcbase + F_REG(IMR1, ch)) | IMR1_LLBSC);
- }
- /* Activates generation and monitoring of PRBS
- * (Pseudo Random Bit Sequence) */
- cpc_writeb(falcbase + F_REG(LCR1, ch),
- cpc_readb(falcbase + F_REG(LCR1, ch)) | LCR1_EPRM | LCR1_XPRBS);
- } else {
- pfalc->prbs = 0;
- /* Deactivates generation and monitoring of PRBS
- * (Pseudo Random Bit Sequence) */
- cpc_writeb(falcbase + F_REG(LCR1, ch),
- cpc_readb(falcbase+F_REG(LCR1,ch)) & ~(LCR1_EPRM | LCR1_XPRBS));
- if (conf->media == IF_IFACE_T1) {
- /* Enable local loop activation/deactivation detect */
- cpc_writeb(falcbase + F_REG(IMR3, ch),
- cpc_readb(falcbase + F_REG(IMR3, ch)) & ~IMR3_LLBSC);
- } else {
- /* Enable local loop activation/deactivation detect */
- cpc_writeb(falcbase + F_REG(IMR1, ch),
- cpc_readb(falcbase + F_REG(IMR1, ch)) & ~IMR1_LLBSC);
- }
- }
-}
-
-/*----------------------------------------------------------------------------
- * falc_pattern_test_error
- *----------------------------------------------------------------------------
- * Description: This routine returns the bit error counter value
- *----------------------------------------------------------------------------
- */
-static u16 falc_pattern_test_error(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- falc_t *pfalc = (falc_t *) & chan->falc;
-
- return pfalc->bec;
-}
-
-/**********************************/
-/*** Net Interface Routines ***/
-/**********************************/
-
-static void
-cpc_trace(struct net_device *dev, struct sk_buff *skb_main, char rx_tx)
-{
- struct sk_buff *skb;
-
- if ((skb = dev_alloc_skb(10 + skb_main->len)) == NULL) {
- printk("%s: out of memory\n", dev->name);
- return;
- }
- skb_put(skb, 10 + skb_main->len);
-
- skb->dev = dev;
- skb->protocol = htons(ETH_P_CUST);
- skb_reset_mac_header(skb);
- skb->pkt_type = PACKET_HOST;
- skb->len = 10 + skb_main->len;
-
- skb_copy_to_linear_data(skb, dev->name, 5);
- skb->data[5] = '[';
- skb->data[6] = rx_tx;
- skb->data[7] = ']';
- skb->data[8] = ':';
- skb->data[9] = ' ';
- skb_copy_from_linear_data(skb_main, &skb->data[10], skb_main->len);
-
- netif_rx(skb);
-}
-
-static void cpc_tx_timeout(struct net_device *dev)
-{
- pc300dev_t *d = (pc300dev_t *) dev_to_hdlc(dev)->priv;
- pc300ch_t *chan = (pc300ch_t *) d->chan;
- pc300_t *card = (pc300_t *) chan->card;
- int ch = chan->channel;
- unsigned long flags;
- u8 ilar;
-
- dev->stats.tx_errors++;
- dev->stats.tx_aborted_errors++;
- CPC_LOCK(card, flags);
- if ((ilar = cpc_readb(card->hw.scabase + ILAR)) != 0) {
- printk("%s: ILAR=0x%x\n", dev->name, ilar);
- cpc_writeb(card->hw.scabase + ILAR, ilar);
- cpc_writeb(card->hw.scabase + DMER, 0x80);
- }
- if (card->hw.type == PC300_TE) {
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) &
- ~(CPLD_REG2_FALC_LED1 << (2 * ch)));
- }
- dev->trans_start = jiffies; /* prevent tx timeout */
- CPC_UNLOCK(card, flags);
- netif_wake_queue(dev);
-}
-
-static int cpc_queue_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- pc300dev_t *d = (pc300dev_t *) dev_to_hdlc(dev)->priv;
- pc300ch_t *chan = (pc300ch_t *) d->chan;
- pc300_t *card = (pc300_t *) chan->card;
- int ch = chan->channel;
- unsigned long flags;
-#ifdef PC300_DEBUG_TX
- int i;
-#endif
-
- if (!netif_carrier_ok(dev)) {
- /* DCD must be OFF: drop packet */
- dev_kfree_skb(skb);
- dev->stats.tx_errors++;
- dev->stats.tx_carrier_errors++;
- return 0;
- } else if (cpc_readb(card->hw.scabase + M_REG(ST3, ch)) & ST3_DCD) {
- printk("%s: DCD is OFF. Going administrative down.\n", dev->name);
- dev->stats.tx_errors++;
- dev->stats.tx_carrier_errors++;
- dev_kfree_skb(skb);
- netif_carrier_off(dev);
- CPC_LOCK(card, flags);
- cpc_writeb(card->hw.scabase + M_REG(CMD, ch), CMD_TX_BUF_CLR);
- if (card->hw.type == PC300_TE) {
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) &
- ~(CPLD_REG2_FALC_LED1 << (2 * ch)));
- }
- CPC_UNLOCK(card, flags);
- netif_wake_queue(dev);
- return 0;
- }
-
- /* Write buffer to DMA buffers */
- if (dma_buf_write(card, ch, (u8 *)skb->data, skb->len) != 0) {
-// printk("%s: write error. Dropping TX packet.\n", dev->name);
- netif_stop_queue(dev);
- dev_kfree_skb(skb);
- dev->stats.tx_errors++;
- dev->stats.tx_dropped++;
- return 0;
- }
-#ifdef PC300_DEBUG_TX
- printk("%s T:", dev->name);
- for (i = 0; i < skb->len; i++)
- printk(" %02x", *(skb->data + i));
- printk("\n");
-#endif
-
- if (d->trace_on) {
- cpc_trace(dev, skb, 'T');
- }
-
- /* Start transmission */
- CPC_LOCK(card, flags);
- /* verify if it has more than one free descriptor */
- if (card->chan[ch].nfree_tx_bd <= 1) {
- /* don't have so stop the queue */
- netif_stop_queue(dev);
- }
- cpc_writel(card->hw.scabase + DTX_REG(EDAL, ch),
- TX_BD_ADDR(ch, chan->tx_next_bd));
- cpc_writeb(card->hw.scabase + M_REG(CMD, ch), CMD_TX_ENA);
- cpc_writeb(card->hw.scabase + DSR_TX(ch), DSR_DE);
- if (card->hw.type == PC300_TE) {
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) |
- (CPLD_REG2_FALC_LED1 << (2 * ch)));
- }
- CPC_UNLOCK(card, flags);
- dev_kfree_skb(skb);
-
- return 0;
-}
-
-static void cpc_net_rx(struct net_device *dev)
-{
- pc300dev_t *d = (pc300dev_t *) dev_to_hdlc(dev)->priv;
- pc300ch_t *chan = (pc300ch_t *) d->chan;
- pc300_t *card = (pc300_t *) chan->card;
- int ch = chan->channel;
-#ifdef PC300_DEBUG_RX
- int i;
-#endif
- int rxb;
- struct sk_buff *skb;
-
- while (1) {
- if ((rxb = dma_get_rx_frame_size(card, ch)) == -1)
- return;
-
- if (!netif_carrier_ok(dev)) {
- /* DCD must be OFF: drop packet */
- printk("%s : DCD is OFF - drop %d rx bytes\n", dev->name, rxb);
- skb = NULL;
- } else {
- if (rxb > (dev->mtu + 40)) { /* add headers */
- printk("%s : MTU exceeded %d\n", dev->name, rxb);
- skb = NULL;
- } else {
- skb = dev_alloc_skb(rxb);
- if (skb == NULL) {
- printk("%s: Memory squeeze!!\n", dev->name);
- return;
- }
- skb->dev = dev;
- }
- }
-
- if (((rxb = dma_buf_read(card, ch, skb)) <= 0) || (skb == NULL)) {
-#ifdef PC300_DEBUG_RX
- printk("%s: rxb = %x\n", dev->name, rxb);
-#endif
- if ((skb == NULL) && (rxb > 0)) {
- /* rxb > dev->mtu */
- dev->stats.rx_errors++;
- dev->stats.rx_length_errors++;
- continue;
- }
-
- if (rxb < 0) { /* Invalid frame */
- rxb = -rxb;
- if (rxb & DST_OVR) {
- dev->stats.rx_errors++;
- dev->stats.rx_fifo_errors++;
- }
- if (rxb & DST_CRC) {
- dev->stats.rx_errors++;
- dev->stats.rx_crc_errors++;
- }
- if (rxb & (DST_RBIT | DST_SHRT | DST_ABT)) {
- dev->stats.rx_errors++;
- dev->stats.rx_frame_errors++;
- }
- }
- if (skb) {
- dev_kfree_skb_irq(skb);
- }
- continue;
- }
-
- dev->stats.rx_bytes += rxb;
-
-#ifdef PC300_DEBUG_RX
- printk("%s R:", dev->name);
- for (i = 0; i < skb->len; i++)
- printk(" %02x", *(skb->data + i));
- printk("\n");
-#endif
- if (d->trace_on) {
- cpc_trace(dev, skb, 'R');
- }
- dev->stats.rx_packets++;
- skb->protocol = hdlc_type_trans(skb, dev);
- netif_rx(skb);
- }
-}
-
-/************************************/
-/*** PC300 Interrupt Routines ***/
-/************************************/
-static void sca_tx_intr(pc300dev_t *dev)
-{
- pc300ch_t *chan = (pc300ch_t *)dev->chan;
- pc300_t *card = (pc300_t *)chan->card;
- int ch = chan->channel;
- volatile pcsca_bd_t __iomem * ptdescr;
-
- /* Clean up descriptors from previous transmission */
- ptdescr = (card->hw.rambase +
- TX_BD_ADDR(ch,chan->tx_first_bd));
- while ((cpc_readl(card->hw.scabase + DTX_REG(CDAL,ch)) !=
- TX_BD_ADDR(ch,chan->tx_first_bd)) &&
- (cpc_readb(&ptdescr->status) & DST_OSB)) {
- dev->dev->stats.tx_packets++;
- dev->dev->stats.tx_bytes += cpc_readw(&ptdescr->len);
- cpc_writeb(&ptdescr->status, DST_OSB);
- cpc_writew(&ptdescr->len, 0);
- chan->nfree_tx_bd++;
- chan->tx_first_bd = (chan->tx_first_bd + 1) & (N_DMA_TX_BUF - 1);
- ptdescr = (card->hw.rambase + TX_BD_ADDR(ch,chan->tx_first_bd));
- }
-
-#ifdef CONFIG_PC300_MLPPP
- if (chan->conf.proto == PC300_PROTO_MLPPP) {
- cpc_tty_trigger_poll(dev);
- } else {
-#endif
- /* Tell the upper layer we are ready to transmit more packets */
- netif_wake_queue(dev->dev);
-#ifdef CONFIG_PC300_MLPPP
- }
-#endif
-}
-
-static void sca_intr(pc300_t * card)
-{
- void __iomem *scabase = card->hw.scabase;
- volatile u32 status;
- int ch;
- int intr_count = 0;
- unsigned char dsr_rx;
-
- while ((status = cpc_readl(scabase + ISR0)) != 0) {
- for (ch = 0; ch < card->hw.nchan; ch++) {
- pc300ch_t *chan = &card->chan[ch];
- pc300dev_t *d = &chan->d;
- struct net_device *dev = d->dev;
-
- spin_lock(&card->card_lock);
-
- /**** Reception ****/
- if (status & IR0_DRX((IR0_DMIA | IR0_DMIB), ch)) {
- u8 drx_stat = cpc_readb(scabase + DSR_RX(ch));
-
- /* Clear RX interrupts */
- cpc_writeb(scabase + DSR_RX(ch), drx_stat | DSR_DWE);
-
-#ifdef PC300_DEBUG_INTR
- printk ("sca_intr: RX intr chan[%d] (st=0x%08lx, dsr=0x%02x)\n",
- ch, status, drx_stat);
-#endif
- if (status & IR0_DRX(IR0_DMIA, ch)) {
- if (drx_stat & DSR_BOF) {
-#ifdef CONFIG_PC300_MLPPP
- if (chan->conf.proto == PC300_PROTO_MLPPP) {
- /* verify if driver is TTY */
- if ((cpc_readb(scabase + DSR_RX(ch)) & DSR_DE)) {
- rx_dma_stop(card, ch);
- }
- cpc_tty_receive(d);
- rx_dma_start(card, ch);
- } else
-#endif
- {
- if ((cpc_readb(scabase + DSR_RX(ch)) & DSR_DE)) {
- rx_dma_stop(card, ch);
- }
- cpc_net_rx(dev);
- /* Discard invalid frames */
- dev->stats.rx_errors++;
- dev->stats.rx_over_errors++;
- chan->rx_first_bd = 0;
- chan->rx_last_bd = N_DMA_RX_BUF - 1;
- rx_dma_start(card, ch);
- }
- }
- }
- if (status & IR0_DRX(IR0_DMIB, ch)) {
- if (drx_stat & DSR_EOM) {
- if (card->hw.type == PC300_TE) {
- cpc_writeb(card->hw.falcbase +
- card->hw.cpld_reg2,
- cpc_readb (card->hw.falcbase +
- card->hw.cpld_reg2) |
- (CPLD_REG2_FALC_LED1 << (2 * ch)));
- }
-#ifdef CONFIG_PC300_MLPPP
- if (chan->conf.proto == PC300_PROTO_MLPPP) {
- /* verify if driver is TTY */
- cpc_tty_receive(d);
- } else {
- cpc_net_rx(dev);
- }
-#else
- cpc_net_rx(dev);
-#endif
- if (card->hw.type == PC300_TE) {
- cpc_writeb(card->hw.falcbase +
- card->hw.cpld_reg2,
- cpc_readb (card->hw.falcbase +
- card->hw.cpld_reg2) &
- ~ (CPLD_REG2_FALC_LED1 << (2 * ch)));
- }
- }
- }
- if (!(dsr_rx = cpc_readb(scabase + DSR_RX(ch)) & DSR_DE)) {
-#ifdef PC300_DEBUG_INTR
- printk("%s: RX intr chan[%d] (st=0x%08lx, dsr=0x%02x, dsr2=0x%02x)\n",
- dev->name, ch, status, drx_stat, dsr_rx);
-#endif
- cpc_writeb(scabase + DSR_RX(ch), (dsr_rx | DSR_DE) & 0xfe);
- }
- }
-
- /**** Transmission ****/
- if (status & IR0_DTX((IR0_EFT | IR0_DMIA | IR0_DMIB), ch)) {
- u8 dtx_stat = cpc_readb(scabase + DSR_TX(ch));
-
- /* Clear TX interrupts */
- cpc_writeb(scabase + DSR_TX(ch), dtx_stat | DSR_DWE);
-
-#ifdef PC300_DEBUG_INTR
- printk ("sca_intr: TX intr chan[%d] (st=0x%08lx, dsr=0x%02x)\n",
- ch, status, dtx_stat);
-#endif
- if (status & IR0_DTX(IR0_EFT, ch)) {
- if (dtx_stat & DSR_UDRF) {
- if (cpc_readb (scabase + M_REG(TBN, ch)) != 0) {
- cpc_writeb(scabase + M_REG(CMD,ch), CMD_TX_BUF_CLR);
- }
- if (card->hw.type == PC300_TE) {
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
- cpc_readb (card->hw.falcbase +
- card->hw.cpld_reg2) &
- ~ (CPLD_REG2_FALC_LED1 << (2 * ch)));
- }
- dev->stats.tx_errors++;
- dev->stats.tx_fifo_errors++;
- sca_tx_intr(d);
- }
- }
- if (status & IR0_DTX(IR0_DMIA, ch)) {
- if (dtx_stat & DSR_BOF) {
- }
- }
- if (status & IR0_DTX(IR0_DMIB, ch)) {
- if (dtx_stat & DSR_EOM) {
- if (card->hw.type == PC300_TE) {
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
- cpc_readb (card->hw.falcbase +
- card->hw.cpld_reg2) &
- ~ (CPLD_REG2_FALC_LED1 << (2 * ch)));
- }
- sca_tx_intr(d);
- }
- }
- }
-
- /**** MSCI ****/
- if (status & IR0_M(IR0_RXINTA, ch)) {
- u8 st1 = cpc_readb(scabase + M_REG(ST1, ch));
-
- /* Clear MSCI interrupts */
- cpc_writeb(scabase + M_REG(ST1, ch), st1);
-
-#ifdef PC300_DEBUG_INTR
- printk("sca_intr: MSCI intr chan[%d] (st=0x%08lx, st1=0x%02x)\n",
- ch, status, st1);
-#endif
- if (st1 & ST1_CDCD) { /* DCD changed */
- if (cpc_readb(scabase + M_REG(ST3, ch)) & ST3_DCD) {
- printk ("%s: DCD is OFF. Going administrative down.\n",
- dev->name);
-#ifdef CONFIG_PC300_MLPPP
- if (chan->conf.proto != PC300_PROTO_MLPPP) {
- netif_carrier_off(dev);
- }
-#else
- netif_carrier_off(dev);
-
-#endif
- card->chan[ch].d.line_off++;
- } else { /* DCD = 1 */
- printk ("%s: DCD is ON. Going administrative up.\n",
- dev->name);
-#ifdef CONFIG_PC300_MLPPP
- if (chan->conf.proto != PC300_PROTO_MLPPP)
- /* verify if driver is not TTY */
-#endif
- netif_carrier_on(dev);
- card->chan[ch].d.line_on++;
- }
- }
- }
- spin_unlock(&card->card_lock);
- }
- if (++intr_count == 10)
- /* Too much work at this board. Force exit */
- break;
- }
-}
-
-static void falc_t1_loop_detection(pc300_t *card, int ch, u8 frs1)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
-
- if (((cpc_readb(falcbase + F_REG(LCR1, ch)) & LCR1_XPRBS) == 0) &&
- !pfalc->loop_gen) {
- if (frs1 & FRS1_LLBDD) {
- // A Line Loop Back Deactivation signal detected
- if (pfalc->loop_active) {
- falc_remote_loop(card, ch, 0);
- }
- } else {
- if ((frs1 & FRS1_LLBAD) &&
- ((cpc_readb(falcbase + F_REG(LCR1, ch)) & LCR1_EPRM) == 0)) {
- // A Line Loop Back Activation signal detected
- if (!pfalc->loop_active) {
- falc_remote_loop(card, ch, 1);
- }
- }
- }
- }
-}
-
-static void falc_e1_loop_detection(pc300_t *card, int ch, u8 rsp)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
-
- if (((cpc_readb(falcbase + F_REG(LCR1, ch)) & LCR1_XPRBS) == 0) &&
- !pfalc->loop_gen) {
- if (rsp & RSP_LLBDD) {
- // A Line Loop Back Deactivation signal detected
- if (pfalc->loop_active) {
- falc_remote_loop(card, ch, 0);
- }
- } else {
- if ((rsp & RSP_LLBAD) &&
- ((cpc_readb(falcbase + F_REG(LCR1, ch)) & LCR1_EPRM) == 0)) {
- // A Line Loop Back Activation signal detected
- if (!pfalc->loop_active) {
- falc_remote_loop(card, ch, 1);
- }
- }
- }
- }
-}
-
-static void falc_t1_intr(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
- u8 isr0, isr3, gis;
- u8 dummy;
-
- while ((gis = cpc_readb(falcbase + F_REG(GIS, ch))) != 0) {
- if (gis & GIS_ISR0) {
- isr0 = cpc_readb(falcbase + F_REG(FISR0, ch));
- if (isr0 & FISR0_PDEN) {
- /* Read the bit to clear the situation */
- if (cpc_readb(falcbase + F_REG(FRS1, ch)) &
- FRS1_PDEN) {
- pfalc->pden++;
- }
- }
- }
-
- if (gis & GIS_ISR1) {
- dummy = cpc_readb(falcbase + F_REG(FISR1, ch));
- }
-
- if (gis & GIS_ISR2) {
- dummy = cpc_readb(falcbase + F_REG(FISR2, ch));
- }
-
- if (gis & GIS_ISR3) {
- isr3 = cpc_readb(falcbase + F_REG(FISR3, ch));
- if (isr3 & FISR3_SEC) {
- pfalc->sec++;
- falc_update_stats(card, ch);
- falc_check_status(card, ch,
- cpc_readb(falcbase + F_REG(FRS0, ch)));
- }
- if (isr3 & FISR3_ES) {
- pfalc->es++;
- }
- if (isr3 & FISR3_LLBSC) {
- falc_t1_loop_detection(card, ch,
- cpc_readb(falcbase + F_REG(FRS1, ch)));
- }
- }
- }
-}
-
-static void falc_e1_intr(pc300_t * card, int ch)
-{
- pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
- falc_t *pfalc = (falc_t *) & chan->falc;
- void __iomem *falcbase = card->hw.falcbase;
- u8 isr1, isr2, isr3, gis, rsp;
- u8 dummy;
-
- while ((gis = cpc_readb(falcbase + F_REG(GIS, ch))) != 0) {
- rsp = cpc_readb(falcbase + F_REG(RSP, ch));
-
- if (gis & GIS_ISR0) {
- dummy = cpc_readb(falcbase + F_REG(FISR0, ch));
- }
- if (gis & GIS_ISR1) {
- isr1 = cpc_readb(falcbase + F_REG(FISR1, ch));
- if (isr1 & FISR1_XMB) {
- if ((pfalc->xmb_cause & 2) &&
- pfalc->multiframe_mode) {
- if (cpc_readb (falcbase + F_REG(FRS0, ch)) &
- (FRS0_LOS | FRS0_AIS | FRS0_LFA)) {
- cpc_writeb(falcbase + F_REG(XSP, ch),
- cpc_readb(falcbase + F_REG(XSP, ch))
- & ~XSP_AXS);
- } else {
- cpc_writeb(falcbase + F_REG(XSP, ch),
- cpc_readb(falcbase + F_REG(XSP, ch))
- | XSP_AXS);
- }
- }
- pfalc->xmb_cause = 0;
- cpc_writeb(falcbase + F_REG(IMR1, ch),
- cpc_readb(falcbase + F_REG(IMR1, ch)) | IMR1_XMB);
- }
- if (isr1 & FISR1_LLBSC) {
- falc_e1_loop_detection(card, ch, rsp);
- }
- }
- if (gis & GIS_ISR2) {
- isr2 = cpc_readb(falcbase + F_REG(FISR2, ch));
- if (isr2 & FISR2_T400MS) {
- cpc_writeb(falcbase + F_REG(XSW, ch),
- cpc_readb(falcbase + F_REG(XSW, ch)) | XSW_XRA);
- }
- if (isr2 & FISR2_MFAR) {
- cpc_writeb(falcbase + F_REG(XSW, ch),
- cpc_readb(falcbase + F_REG(XSW, ch)) & ~XSW_XRA);
- }
- if (isr2 & (FISR2_FAR | FISR2_LFA | FISR2_AIS | FISR2_LOS)) {
- pfalc->xmb_cause |= 2;
- cpc_writeb(falcbase + F_REG(IMR1, ch),
- cpc_readb(falcbase + F_REG(IMR1, ch)) & ~IMR1_XMB);
- }
- }
- if (gis & GIS_ISR3) {
- isr3 = cpc_readb(falcbase + F_REG(FISR3, ch));
- if (isr3 & FISR3_SEC) {
- pfalc->sec++;
- falc_update_stats(card, ch);
- falc_check_status(card, ch,
- cpc_readb(falcbase + F_REG(FRS0, ch)));
- }
- if (isr3 & FISR3_ES) {
- pfalc->es++;
- }
- }
- }
-}
-
-static void falc_intr(pc300_t * card)
-{
- int ch;
-
- for (ch = 0; ch < card->hw.nchan; ch++) {
- pc300ch_t *chan = &card->chan[ch];
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
-
- if (conf->media == IF_IFACE_T1) {
- falc_t1_intr(card, ch);
- } else {
- falc_e1_intr(card, ch);
- }
- }
-}
-
-static irqreturn_t cpc_intr(int irq, void *dev_id)
-{
- pc300_t *card = dev_id;
- volatile u8 plx_status;
-
- if (!card) {
-#ifdef PC300_DEBUG_INTR
- printk("cpc_intr: spurious intr %d\n", irq);
-#endif
- return IRQ_NONE; /* spurious intr */
- }
-
- if (!card->hw.rambase) {
-#ifdef PC300_DEBUG_INTR
- printk("cpc_intr: spurious intr2 %d\n", irq);
-#endif
- return IRQ_NONE; /* spurious intr */
- }
-
- switch (card->hw.type) {
- case PC300_RSV:
- case PC300_X21:
- sca_intr(card);
- break;
-
- case PC300_TE:
- while ( (plx_status = (cpc_readb(card->hw.plxbase + card->hw.intctl_reg) &
- (PLX_9050_LINT1_STATUS | PLX_9050_LINT2_STATUS))) != 0) {
- if (plx_status & PLX_9050_LINT1_STATUS) { /* SCA Interrupt */
- sca_intr(card);
- }
- if (plx_status & PLX_9050_LINT2_STATUS) { /* FALC Interrupt */
- falc_intr(card);
- }
- }
- break;
- }
- return IRQ_HANDLED;
-}
-
-static void cpc_sca_status(pc300_t * card, int ch)
-{
- u8 ilar;
- void __iomem *scabase = card->hw.scabase;
- unsigned long flags;
-
- tx_dma_buf_check(card, ch);
- rx_dma_buf_check(card, ch);
- ilar = cpc_readb(scabase + ILAR);
- printk ("ILAR=0x%02x, WCRL=0x%02x, PCR=0x%02x, BTCR=0x%02x, BOLR=0x%02x\n",
- ilar, cpc_readb(scabase + WCRL), cpc_readb(scabase + PCR),
- cpc_readb(scabase + BTCR), cpc_readb(scabase + BOLR));
- printk("TX_CDA=0x%08x, TX_EDA=0x%08x\n",
- cpc_readl(scabase + DTX_REG(CDAL, ch)),
- cpc_readl(scabase + DTX_REG(EDAL, ch)));
- printk("RX_CDA=0x%08x, RX_EDA=0x%08x, BFL=0x%04x\n",
- cpc_readl(scabase + DRX_REG(CDAL, ch)),
- cpc_readl(scabase + DRX_REG(EDAL, ch)),
- cpc_readw(scabase + DRX_REG(BFLL, ch)));
- printk("DMER=0x%02x, DSR_TX=0x%02x, DSR_RX=0x%02x\n",
- cpc_readb(scabase + DMER), cpc_readb(scabase + DSR_TX(ch)),
- cpc_readb(scabase + DSR_RX(ch)));
- printk("DMR_TX=0x%02x, DMR_RX=0x%02x, DIR_TX=0x%02x, DIR_RX=0x%02x\n",
- cpc_readb(scabase + DMR_TX(ch)), cpc_readb(scabase + DMR_RX(ch)),
- cpc_readb(scabase + DIR_TX(ch)),
- cpc_readb(scabase + DIR_RX(ch)));
- printk("DCR_TX=0x%02x, DCR_RX=0x%02x, FCT_TX=0x%02x, FCT_RX=0x%02x\n",
- cpc_readb(scabase + DCR_TX(ch)), cpc_readb(scabase + DCR_RX(ch)),
- cpc_readb(scabase + FCT_TX(ch)),
- cpc_readb(scabase + FCT_RX(ch)));
- printk("MD0=0x%02x, MD1=0x%02x, MD2=0x%02x, MD3=0x%02x, IDL=0x%02x\n",
- cpc_readb(scabase + M_REG(MD0, ch)),
- cpc_readb(scabase + M_REG(MD1, ch)),
- cpc_readb(scabase + M_REG(MD2, ch)),
- cpc_readb(scabase + M_REG(MD3, ch)),
- cpc_readb(scabase + M_REG(IDL, ch)));
- printk("CMD=0x%02x, SA0=0x%02x, SA1=0x%02x, TFN=0x%02x, CTL=0x%02x\n",
- cpc_readb(scabase + M_REG(CMD, ch)),
- cpc_readb(scabase + M_REG(SA0, ch)),
- cpc_readb(scabase + M_REG(SA1, ch)),
- cpc_readb(scabase + M_REG(TFN, ch)),
- cpc_readb(scabase + M_REG(CTL, ch)));
- printk("ST0=0x%02x, ST1=0x%02x, ST2=0x%02x, ST3=0x%02x, ST4=0x%02x\n",
- cpc_readb(scabase + M_REG(ST0, ch)),
- cpc_readb(scabase + M_REG(ST1, ch)),
- cpc_readb(scabase + M_REG(ST2, ch)),
- cpc_readb(scabase + M_REG(ST3, ch)),
- cpc_readb(scabase + M_REG(ST4, ch)));
- printk ("CST0=0x%02x, CST1=0x%02x, CST2=0x%02x, CST3=0x%02x, FST=0x%02x\n",
- cpc_readb(scabase + M_REG(CST0, ch)),
- cpc_readb(scabase + M_REG(CST1, ch)),
- cpc_readb(scabase + M_REG(CST2, ch)),
- cpc_readb(scabase + M_REG(CST3, ch)),
- cpc_readb(scabase + M_REG(FST, ch)));
- printk("TRC0=0x%02x, TRC1=0x%02x, RRC=0x%02x, TBN=0x%02x, RBN=0x%02x\n",
- cpc_readb(scabase + M_REG(TRC0, ch)),
- cpc_readb(scabase + M_REG(TRC1, ch)),
- cpc_readb(scabase + M_REG(RRC, ch)),
- cpc_readb(scabase + M_REG(TBN, ch)),
- cpc_readb(scabase + M_REG(RBN, ch)));
- printk("TFS=0x%02x, TNR0=0x%02x, TNR1=0x%02x, RNR=0x%02x\n",
- cpc_readb(scabase + M_REG(TFS, ch)),
- cpc_readb(scabase + M_REG(TNR0, ch)),
- cpc_readb(scabase + M_REG(TNR1, ch)),
- cpc_readb(scabase + M_REG(RNR, ch)));
- printk("TCR=0x%02x, RCR=0x%02x, TNR1=0x%02x, RNR=0x%02x\n",
- cpc_readb(scabase + M_REG(TCR, ch)),
- cpc_readb(scabase + M_REG(RCR, ch)),
- cpc_readb(scabase + M_REG(TNR1, ch)),
- cpc_readb(scabase + M_REG(RNR, ch)));
- printk("TXS=0x%02x, RXS=0x%02x, EXS=0x%02x, TMCT=0x%02x, TMCR=0x%02x\n",
- cpc_readb(scabase + M_REG(TXS, ch)),
- cpc_readb(scabase + M_REG(RXS, ch)),
- cpc_readb(scabase + M_REG(EXS, ch)),
- cpc_readb(scabase + M_REG(TMCT, ch)),
- cpc_readb(scabase + M_REG(TMCR, ch)));
- printk("IE0=0x%02x, IE1=0x%02x, IE2=0x%02x, IE4=0x%02x, FIE=0x%02x\n",
- cpc_readb(scabase + M_REG(IE0, ch)),
- cpc_readb(scabase + M_REG(IE1, ch)),
- cpc_readb(scabase + M_REG(IE2, ch)),
- cpc_readb(scabase + M_REG(IE4, ch)),
- cpc_readb(scabase + M_REG(FIE, ch)));
- printk("IER0=0x%08x\n", cpc_readl(scabase + IER0));
-
- if (ilar != 0) {
- CPC_LOCK(card, flags);
- cpc_writeb(scabase + ILAR, ilar);
- cpc_writeb(scabase + DMER, 0x80);
- CPC_UNLOCK(card, flags);
- }
-}
-
-static void cpc_falc_status(pc300_t * card, int ch)
-{
- pc300ch_t *chan = &card->chan[ch];
- falc_t *pfalc = (falc_t *) & chan->falc;
- unsigned long flags;
-
- CPC_LOCK(card, flags);
- printk("CH%d: %s %s %d channels\n",
- ch, (pfalc->sync ? "SYNC" : ""), (pfalc->active ? "ACTIVE" : ""),
- pfalc->num_channels);
-
- printk(" pden=%d, los=%d, losr=%d, lfa=%d, farec=%d\n",
- pfalc->pden, pfalc->los, pfalc->losr, pfalc->lfa, pfalc->farec);
- printk(" lmfa=%d, ais=%d, sec=%d, es=%d, rai=%d\n",
- pfalc->lmfa, pfalc->ais, pfalc->sec, pfalc->es, pfalc->rai);
- printk(" bec=%d, fec=%d, cvc=%d, cec=%d, ebc=%d\n",
- pfalc->bec, pfalc->fec, pfalc->cvc, pfalc->cec, pfalc->ebc);
-
- printk("\n");
- printk(" STATUS: %s %s %s %s %s %s\n",
- (pfalc->red_alarm ? "RED" : ""),
- (pfalc->blue_alarm ? "BLU" : ""),
- (pfalc->yellow_alarm ? "YEL" : ""),
- (pfalc->loss_fa ? "LFA" : ""),
- (pfalc->loss_mfa ? "LMF" : ""), (pfalc->prbs ? "PRB" : ""));
- CPC_UNLOCK(card, flags);
-}
-
-static int cpc_change_mtu(struct net_device *dev, int new_mtu)
-{
- if ((new_mtu < 128) || (new_mtu > PC300_DEF_MTU))
- return -EINVAL;
- dev->mtu = new_mtu;
- return 0;
-}
-
-static int cpc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
- pc300dev_t *d = (pc300dev_t *) dev_to_hdlc(dev)->priv;
- pc300ch_t *chan = (pc300ch_t *) d->chan;
- pc300_t *card = (pc300_t *) chan->card;
- pc300conf_t conf_aux;
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- int ch = chan->channel;
- void __user *arg = ifr->ifr_data;
- struct if_settings *settings = &ifr->ifr_settings;
- void __iomem *scabase = card->hw.scabase;
-
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
-
- switch (cmd) {
- case SIOCGPC300CONF:
-#ifdef CONFIG_PC300_MLPPP
- if (conf->proto != PC300_PROTO_MLPPP) {
- conf->proto = /* FIXME hdlc->proto.id */ 0;
- }
-#else
- conf->proto = /* FIXME hdlc->proto.id */ 0;
-#endif
- memcpy(&conf_aux.conf, conf, sizeof(pc300chconf_t));
- memcpy(&conf_aux.hw, &card->hw, sizeof(pc300hw_t));
- if (!arg ||
- copy_to_user(arg, &conf_aux, sizeof(pc300conf_t)))
- return -EINVAL;
- return 0;
- case SIOCSPC300CONF:
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- if (!arg ||
- copy_from_user(&conf_aux.conf, arg, sizeof(pc300chconf_t)))
- return -EINVAL;
- if (card->hw.cpld_id < 0x02 &&
- conf_aux.conf.fr_mode == PC300_FR_UNFRAMED) {
- /* CPLD_ID < 0x02 doesn't support Unframed E1 */
- return -EINVAL;
- }
-#ifdef CONFIG_PC300_MLPPP
- if (conf_aux.conf.proto == PC300_PROTO_MLPPP) {
- if (conf->proto != PC300_PROTO_MLPPP) {
- memcpy(conf, &conf_aux.conf, sizeof(pc300chconf_t));
- cpc_tty_init(d); /* init TTY driver */
- }
- } else {
- if (conf_aux.conf.proto == 0xffff) {
- if (conf->proto == PC300_PROTO_MLPPP){
- /* ifdown interface */
- cpc_close(dev);
- }
- } else {
- memcpy(conf, &conf_aux.conf, sizeof(pc300chconf_t));
- /* FIXME hdlc->proto.id = conf->proto; */
- }
- }
-#else
- memcpy(conf, &conf_aux.conf, sizeof(pc300chconf_t));
- /* FIXME hdlc->proto.id = conf->proto; */
-#endif
- return 0;
- case SIOCGPC300STATUS:
- cpc_sca_status(card, ch);
- return 0;
- case SIOCGPC300FALCSTATUS:
- cpc_falc_status(card, ch);
- return 0;
-
- case SIOCGPC300UTILSTATS:
- {
- if (!arg) { /* clear statistics */
- memset(&dev->stats, 0, sizeof(dev->stats));
- if (card->hw.type == PC300_TE) {
- memset(&chan->falc, 0, sizeof(falc_t));
- }
- } else {
- pc300stats_t pc300stats;
-
- memset(&pc300stats, 0, sizeof(pc300stats_t));
- pc300stats.hw_type = card->hw.type;
- pc300stats.line_on = card->chan[ch].d.line_on;
- pc300stats.line_off = card->chan[ch].d.line_off;
- memcpy(&pc300stats.gen_stats, &dev->stats,
- sizeof(dev->stats));
- if (card->hw.type == PC300_TE)
- memcpy(&pc300stats.te_stats,&chan->falc,sizeof(falc_t));
- if (copy_to_user(arg, &pc300stats, sizeof(pc300stats_t)))
- return -EFAULT;
- }
- return 0;
- }
-
- case SIOCGPC300UTILSTATUS:
- {
- struct pc300status pc300status;
-
- pc300status.hw_type = card->hw.type;
- if (card->hw.type == PC300_TE) {
- pc300status.te_status.sync = chan->falc.sync;
- pc300status.te_status.red_alarm = chan->falc.red_alarm;
- pc300status.te_status.blue_alarm = chan->falc.blue_alarm;
- pc300status.te_status.loss_fa = chan->falc.loss_fa;
- pc300status.te_status.yellow_alarm =chan->falc.yellow_alarm;
- pc300status.te_status.loss_mfa = chan->falc.loss_mfa;
- pc300status.te_status.prbs = chan->falc.prbs;
- } else {
- pc300status.gen_status.dcd =
- !(cpc_readb (scabase + M_REG(ST3, ch)) & ST3_DCD);
- pc300status.gen_status.cts =
- !(cpc_readb (scabase + M_REG(ST3, ch)) & ST3_CTS);
- pc300status.gen_status.rts =
- !(cpc_readb (scabase + M_REG(CTL, ch)) & CTL_RTS);
- pc300status.gen_status.dtr =
- !(cpc_readb (scabase + M_REG(CTL, ch)) & CTL_DTR);
- /* There is no DSR in HD64572 */
- }
- if (!arg ||
- copy_to_user(arg, &pc300status, sizeof(pc300status_t)))
- return -EINVAL;
- return 0;
- }
-
- case SIOCSPC300TRACE:
- /* Sets/resets a trace_flag for the respective device */
- if (!arg || copy_from_user(&d->trace_on, arg,sizeof(unsigned char)))
- return -EINVAL;
- return 0;
-
- case SIOCSPC300LOOPBACK:
- {
- struct pc300loopback pc300loop;
-
- /* TE boards only */
- if (card->hw.type != PC300_TE)
- return -EINVAL;
-
- if (!arg ||
- copy_from_user(&pc300loop, arg, sizeof(pc300loopback_t)))
- return -EINVAL;
- switch (pc300loop.loop_type) {
- case PC300LOCLOOP: /* Turn the local loop on/off */
- falc_local_loop(card, ch, pc300loop.loop_on);
- return 0;
-
- case PC300REMLOOP: /* Turn the remote loop on/off */
- falc_remote_loop(card, ch, pc300loop.loop_on);
- return 0;
-
- case PC300PAYLOADLOOP: /* Turn the payload loop on/off */
- falc_payload_loop(card, ch, pc300loop.loop_on);
- return 0;
-
- case PC300GENLOOPUP: /* Generate loop UP */
- if (pc300loop.loop_on) {
- falc_generate_loop_up_code (card, ch);
- } else {
- turn_off_xlu(card, ch);
- }
- return 0;
-
- case PC300GENLOOPDOWN: /* Generate loop DOWN */
- if (pc300loop.loop_on) {
- falc_generate_loop_down_code (card, ch);
- } else {
- turn_off_xld(card, ch);
- }
- return 0;
-
- default:
- return -EINVAL;
- }
- }
-
- case SIOCSPC300PATTERNTEST:
- /* Turn the pattern test on/off and show the errors counter */
- {
- struct pc300patterntst pc300patrntst;
-
- /* TE boards only */
- if (card->hw.type != PC300_TE)
- return -EINVAL;
-
- if (card->hw.cpld_id < 0x02) {
- /* CPLD_ID < 0x02 doesn't support pattern test */
- return -EINVAL;
- }
-
- if (!arg ||
- copy_from_user(&pc300patrntst,arg,sizeof(pc300patterntst_t)))
- return -EINVAL;
- if (pc300patrntst.patrntst_on == 2) {
- if (chan->falc.prbs == 0) {
- falc_pattern_test(card, ch, 1);
- }
- pc300patrntst.num_errors =
- falc_pattern_test_error(card, ch);
- if (copy_to_user(arg, &pc300patrntst,
- sizeof(pc300patterntst_t)))
- return -EINVAL;
- } else {
- falc_pattern_test(card, ch, pc300patrntst.patrntst_on);
- }
- return 0;
- }
-
- case SIOCWANDEV:
- switch (ifr->ifr_settings.type) {
- case IF_GET_IFACE:
- {
- const size_t size = sizeof(sync_serial_settings);
- ifr->ifr_settings.type = conf->media;
- if (ifr->ifr_settings.size < size) {
- /* data size wanted */
- ifr->ifr_settings.size = size;
- return -ENOBUFS;
- }
-
- if (copy_to_user(settings->ifs_ifsu.sync,
- &conf->phys_settings, size)) {
- return -EFAULT;
- }
- return 0;
- }
-
- case IF_IFACE_V35:
- case IF_IFACE_V24:
- case IF_IFACE_X21:
- {
- const size_t size = sizeof(sync_serial_settings);
-
- if (!capable(CAP_NET_ADMIN)) {
- return -EPERM;
- }
- /* incorrect data len? */
- if (ifr->ifr_settings.size != size) {
- return -ENOBUFS;
- }
-
- if (copy_from_user(&conf->phys_settings,
- settings->ifs_ifsu.sync, size)) {
- return -EFAULT;
- }
-
- if (conf->phys_settings.loopback) {
- cpc_writeb(card->hw.scabase + M_REG(MD2, ch),
- cpc_readb(card->hw.scabase + M_REG(MD2, ch)) |
- MD2_LOOP_MIR);
- }
- conf->media = ifr->ifr_settings.type;
- return 0;
- }
-
- case IF_IFACE_T1:
- case IF_IFACE_E1:
- {
- const size_t te_size = sizeof(te1_settings);
- const size_t size = sizeof(sync_serial_settings);
-
- if (!capable(CAP_NET_ADMIN)) {
- return -EPERM;
- }
-
- /* incorrect data len? */
- if (ifr->ifr_settings.size != te_size) {
- return -ENOBUFS;
- }
-
- if (copy_from_user(&conf->phys_settings,
- settings->ifs_ifsu.te1, size)) {
- return -EFAULT;
- }/* Ignoring HDLC slot_map for a while */
-
- if (conf->phys_settings.loopback) {
- cpc_writeb(card->hw.scabase + M_REG(MD2, ch),
- cpc_readb(card->hw.scabase + M_REG(MD2, ch)) |
- MD2_LOOP_MIR);
- }
- conf->media = ifr->ifr_settings.type;
- return 0;
- }
- default:
- return hdlc_ioctl(dev, ifr, cmd);
- }
-
- default:
- return hdlc_ioctl(dev, ifr, cmd);
- }
-}
-
-static int clock_rate_calc(u32 rate, u32 clock, int *br_io)
-{
- int br, tc;
- int br_pwr, error;
-
- *br_io = 0;
-
- if (rate == 0)
- return 0;
-
- for (br = 0, br_pwr = 1; br <= 9; br++, br_pwr <<= 1) {
- if ((tc = clock / br_pwr / rate) <= 0xff) {
- *br_io = br;
- break;
- }
- }
-
- if (tc <= 0xff) {
- error = ((rate - (clock / br_pwr / rate)) / rate) * 1000;
- /* Errors bigger than +/- 1% won't be tolerated */
- if (error < -10 || error > 10)
- return -1;
- else
- return tc;
- } else {
- return -1;
- }
-}
-
-static int ch_config(pc300dev_t * d)
-{
- pc300ch_t *chan = (pc300ch_t *) d->chan;
- pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
- pc300_t *card = (pc300_t *) chan->card;
- void __iomem *scabase = card->hw.scabase;
- void __iomem *plxbase = card->hw.plxbase;
- int ch = chan->channel;
- u32 clkrate = chan->conf.phys_settings.clock_rate;
- u32 clktype = chan->conf.phys_settings.clock_type;
- u16 encoding = chan->conf.proto_settings.encoding;
- u16 parity = chan->conf.proto_settings.parity;
- u8 md0, md2;
-
- /* Reset the channel */
- cpc_writeb(scabase + M_REG(CMD, ch), CMD_CH_RST);
-
- /* Configure the SCA registers */
- switch (parity) {
- case PARITY_NONE:
- md0 = MD0_BIT_SYNC;
- break;
- case PARITY_CRC16_PR0:
- md0 = MD0_CRC16_0|MD0_CRCC0|MD0_BIT_SYNC;
- break;
- case PARITY_CRC16_PR1:
- md0 = MD0_CRC16_1|MD0_CRCC0|MD0_BIT_SYNC;
- break;
- case PARITY_CRC32_PR1_CCITT:
- md0 = MD0_CRC32|MD0_CRCC0|MD0_BIT_SYNC;
- break;
- case PARITY_CRC16_PR1_CCITT:
- default:
- md0 = MD0_CRC_CCITT|MD0_CRCC0|MD0_BIT_SYNC;
- break;
- }
- switch (encoding) {
- case ENCODING_NRZI:
- md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_NRZI;
- break;
- case ENCODING_FM_MARK: /* FM1 */
- md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_FM|MD2_FM1;
- break;
- case ENCODING_FM_SPACE: /* FM0 */
- md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_FM|MD2_FM0;
- break;
- case ENCODING_MANCHESTER: /* It's not working... */
- md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_FM|MD2_MANCH;
- break;
- case ENCODING_NRZ:
- default:
- md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_NRZ;
- break;
- }
- cpc_writeb(scabase + M_REG(MD0, ch), md0);
- cpc_writeb(scabase + M_REG(MD1, ch), 0);
- cpc_writeb(scabase + M_REG(MD2, ch), md2);
- cpc_writeb(scabase + M_REG(IDL, ch), 0x7e);
- cpc_writeb(scabase + M_REG(CTL, ch), CTL_URSKP | CTL_IDLC);
-
- /* Configure HW media */
- switch (card->hw.type) {
- case PC300_RSV:
- if (conf->media == IF_IFACE_V35) {
- cpc_writel((plxbase + card->hw.gpioc_reg),
- cpc_readl(plxbase + card->hw.gpioc_reg) | PC300_CHMEDIA_MASK(ch));
- } else {
- cpc_writel((plxbase + card->hw.gpioc_reg),
- cpc_readl(plxbase + card->hw.gpioc_reg) & ~PC300_CHMEDIA_MASK(ch));
- }
- break;
-
- case PC300_X21:
- break;
-
- case PC300_TE:
- te_config(card, ch);
- break;
- }
-
- switch (card->hw.type) {
- case PC300_RSV:
- case PC300_X21:
- if (clktype == CLOCK_INT || clktype == CLOCK_TXINT) {
- int tmc, br;
-
- /* Calculate the clkrate parameters */
- tmc = clock_rate_calc(clkrate, card->hw.clock, &br);
- if (tmc < 0)
- return -EIO;
- cpc_writeb(scabase + M_REG(TMCT, ch), tmc);
- cpc_writeb(scabase + M_REG(TXS, ch),
- (TXS_DTRXC | TXS_IBRG | br));
- if (clktype == CLOCK_INT) {
- cpc_writeb(scabase + M_REG(TMCR, ch), tmc);
- cpc_writeb(scabase + M_REG(RXS, ch),
- (RXS_IBRG | br));
- } else {
- cpc_writeb(scabase + M_REG(TMCR, ch), 1);
- cpc_writeb(scabase + M_REG(RXS, ch), 0);
- }
- if (card->hw.type == PC300_X21) {
- cpc_writeb(scabase + M_REG(GPO, ch), 1);
- cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1 | EXS_RES1);
- } else {
- cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1);
- }
- } else {
- cpc_writeb(scabase + M_REG(TMCT, ch), 1);
- if (clktype == CLOCK_EXT) {
- cpc_writeb(scabase + M_REG(TXS, ch),
- TXS_DTRXC);
- } else {
- cpc_writeb(scabase + M_REG(TXS, ch),
- TXS_DTRXC|TXS_RCLK);
- }
- cpc_writeb(scabase + M_REG(TMCR, ch), 1);
- cpc_writeb(scabase + M_REG(RXS, ch), 0);
- if (card->hw.type == PC300_X21) {
- cpc_writeb(scabase + M_REG(GPO, ch), 0);
- cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1 | EXS_RES1);
- } else {
- cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1);
- }
- }
- break;
-
- case PC300_TE:
- /* SCA always receives clock from the FALC chip */
- cpc_writeb(scabase + M_REG(TMCT, ch), 1);
- cpc_writeb(scabase + M_REG(TXS, ch), 0);
- cpc_writeb(scabase + M_REG(TMCR, ch), 1);
- cpc_writeb(scabase + M_REG(RXS, ch), 0);
- cpc_writeb(scabase + M_REG(EXS, ch), 0);
- break;
- }
-
- /* Enable Interrupts */
- cpc_writel(scabase + IER0,
- cpc_readl(scabase + IER0) |
- IR0_M(IR0_RXINTA, ch) |
- IR0_DRX(IR0_EFT | IR0_DMIA | IR0_DMIB, ch) |
- IR0_DTX(IR0_EFT | IR0_DMIA | IR0_DMIB, ch));
- cpc_writeb(scabase + M_REG(IE0, ch),
- cpc_readl(scabase + M_REG(IE0, ch)) | IE0_RXINTA);
- cpc_writeb(scabase + M_REG(IE1, ch),
- cpc_readl(scabase + M_REG(IE1, ch)) | IE1_CDCD);
-
- return 0;
-}
-
-static int rx_config(pc300dev_t * d)
-{
- pc300ch_t *chan = (pc300ch_t *) d->chan;
- pc300_t *card = (pc300_t *) chan->card;
- void __iomem *scabase = card->hw.scabase;
- int ch = chan->channel;
-
- cpc_writeb(scabase + DSR_RX(ch), 0);
-
- /* General RX settings */
- cpc_writeb(scabase + M_REG(RRC, ch), 0);
- cpc_writeb(scabase + M_REG(RNR, ch), 16);
-
- /* Enable reception */
- cpc_writeb(scabase + M_REG(CMD, ch), CMD_RX_CRC_INIT);
- cpc_writeb(scabase + M_REG(CMD, ch), CMD_RX_ENA);
-
- /* Initialize DMA stuff */
- chan->rx_first_bd = 0;
- chan->rx_last_bd = N_DMA_RX_BUF - 1;
- rx_dma_buf_init(card, ch);
- cpc_writeb(scabase + DCR_RX(ch), DCR_FCT_CLR);
- cpc_writeb(scabase + DMR_RX(ch), (DMR_TMOD | DMR_NF));
- cpc_writeb(scabase + DIR_RX(ch), (DIR_EOM | DIR_BOF));
-
- /* Start DMA */
- rx_dma_start(card, ch);
-
- return 0;
-}
-
-static int tx_config(pc300dev_t * d)
-{
- pc300ch_t *chan = (pc300ch_t *) d->chan;
- pc300_t *card = (pc300_t *) chan->card;
- void __iomem *scabase = card->hw.scabase;
- int ch = chan->channel;
-
- cpc_writeb(scabase + DSR_TX(ch), 0);
-
- /* General TX settings */
- cpc_writeb(scabase + M_REG(TRC0, ch), 0);
- cpc_writeb(scabase + M_REG(TFS, ch), 32);
- cpc_writeb(scabase + M_REG(TNR0, ch), 20);
- cpc_writeb(scabase + M_REG(TNR1, ch), 48);
- cpc_writeb(scabase + M_REG(TCR, ch), 8);
-
- /* Enable transmission */
- cpc_writeb(scabase + M_REG(CMD, ch), CMD_TX_CRC_INIT);
-
- /* Initialize DMA stuff */
- chan->tx_first_bd = 0;
- chan->tx_next_bd = 0;
- tx_dma_buf_init(card, ch);
- cpc_writeb(scabase + DCR_TX(ch), DCR_FCT_CLR);
- cpc_writeb(scabase + DMR_TX(ch), (DMR_TMOD | DMR_NF));
- cpc_writeb(scabase + DIR_TX(ch), (DIR_EOM | DIR_BOF | DIR_UDRF));
- cpc_writel(scabase + DTX_REG(CDAL, ch), TX_BD_ADDR(ch, chan->tx_first_bd));
- cpc_writel(scabase + DTX_REG(EDAL, ch), TX_BD_ADDR(ch, chan->tx_next_bd));
-
- return 0;
-}
-
-static int cpc_attach(struct net_device *dev, unsigned short encoding,
- unsigned short parity)
-{
- pc300dev_t *d = (pc300dev_t *)dev_to_hdlc(dev)->priv;
- pc300ch_t *chan = (pc300ch_t *)d->chan;
- pc300_t *card = (pc300_t *)chan->card;
- pc300chconf_t *conf = (pc300chconf_t *)&chan->conf;
-
- if (card->hw.type == PC300_TE) {
- if (encoding != ENCODING_NRZ && encoding != ENCODING_NRZI) {
- return -EINVAL;
- }
- } else {
- if (encoding != ENCODING_NRZ && encoding != ENCODING_NRZI &&
- encoding != ENCODING_FM_MARK && encoding != ENCODING_FM_SPACE) {
- /* Driver doesn't support ENCODING_MANCHESTER yet */
- return -EINVAL;
- }
- }
-
- if (parity != PARITY_NONE && parity != PARITY_CRC16_PR0 &&
- parity != PARITY_CRC16_PR1 && parity != PARITY_CRC32_PR1_CCITT &&
- parity != PARITY_CRC16_PR1_CCITT) {
- return -EINVAL;
- }
-
- conf->proto_settings.encoding = encoding;
- conf->proto_settings.parity = parity;
- return 0;
-}
-
-static int cpc_opench(pc300dev_t * d)
-{
- pc300ch_t *chan = (pc300ch_t *) d->chan;
- pc300_t *card = (pc300_t *) chan->card;
- int ch = chan->channel, rc;
- void __iomem *scabase = card->hw.scabase;
-
- rc = ch_config(d);
- if (rc)
- return rc;
-
- rx_config(d);
-
- tx_config(d);
-
- /* Assert RTS and DTR */
- cpc_writeb(scabase + M_REG(CTL, ch),
- cpc_readb(scabase + M_REG(CTL, ch)) & ~(CTL_RTS | CTL_DTR));
-
- return 0;
-}
-
-static void cpc_closech(pc300dev_t * d)
-{
- pc300ch_t *chan = (pc300ch_t *) d->chan;
- pc300_t *card = (pc300_t *) chan->card;
- falc_t *pfalc = (falc_t *) & chan->falc;
- int ch = chan->channel;
-
- cpc_writeb(card->hw.scabase + M_REG(CMD, ch), CMD_CH_RST);
- rx_dma_stop(card, ch);
- tx_dma_stop(card, ch);
-
- if (card->hw.type == PC300_TE) {
- memset(pfalc, 0, sizeof(falc_t));
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) &
- ~((CPLD_REG2_FALC_TX_CLK | CPLD_REG2_FALC_RX_CLK |
- CPLD_REG2_FALC_LED2) << (2 * ch)));
- /* Reset the FALC chip */
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
- (CPLD_REG1_FALC_RESET << (2 * ch)));
- udelay(10000);
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) &
- ~(CPLD_REG1_FALC_RESET << (2 * ch)));
- }
-}
-
-int cpc_open(struct net_device *dev)
-{
- pc300dev_t *d = (pc300dev_t *) dev_to_hdlc(dev)->priv;
- struct ifreq ifr;
- int result;
-
-#ifdef PC300_DEBUG_OTHER
- printk("pc300: cpc_open");
-#endif
-
- result = hdlc_open(dev);
-
- if (result)
- return result;
-
- sprintf(ifr.ifr_name, "%s", dev->name);
- result = cpc_opench(d);
- if (result)
- goto err_out;
-
- netif_start_queue(dev);
- return 0;
-
-err_out:
- hdlc_close(dev);
- return result;
-}
-
-static int cpc_close(struct net_device *dev)
-{
- pc300dev_t *d = (pc300dev_t *) dev_to_hdlc(dev)->priv;
- pc300ch_t *chan = (pc300ch_t *) d->chan;
- pc300_t *card = (pc300_t *) chan->card;
- unsigned long flags;
-
-#ifdef PC300_DEBUG_OTHER
- printk("pc300: cpc_close");
-#endif
-
- netif_stop_queue(dev);
-
- CPC_LOCK(card, flags);
- cpc_closech(d);
- CPC_UNLOCK(card, flags);
-
- hdlc_close(dev);
-
-#ifdef CONFIG_PC300_MLPPP
- if (chan->conf.proto == PC300_PROTO_MLPPP) {
- cpc_tty_unregister_service(d);
- chan->conf.proto = 0xffff;
- }
-#endif
-
- return 0;
-}
-
-static u32 detect_ram(pc300_t * card)
-{
- u32 i;
- u8 data;
- void __iomem *rambase = card->hw.rambase;
-
- card->hw.ramsize = PC300_RAMSIZE;
- /* Let's find out how much RAM is present on this board */
- for (i = 0; i < card->hw.ramsize; i++) {
- data = (u8)(i & 0xff);
- cpc_writeb(rambase + i, data);
- if (cpc_readb(rambase + i) != data) {
- break;
- }
- }
- return i;
-}
-
-static void plx_init(pc300_t * card)
-{
- struct RUNTIME_9050 __iomem *plx_ctl = card->hw.plxbase;
-
- /* Reset PLX */
- cpc_writel(&plx_ctl->init_ctrl,
- cpc_readl(&plx_ctl->init_ctrl) | 0x40000000);
- udelay(10000L);
- cpc_writel(&plx_ctl->init_ctrl,
- cpc_readl(&plx_ctl->init_ctrl) & ~0x40000000);
-
- /* Reload Config. Registers from EEPROM */
- cpc_writel(&plx_ctl->init_ctrl,
- cpc_readl(&plx_ctl->init_ctrl) | 0x20000000);
- udelay(10000L);
- cpc_writel(&plx_ctl->init_ctrl,
- cpc_readl(&plx_ctl->init_ctrl) & ~0x20000000);
-
-}
-
-static void show_version(void)
-{
- char *rcsvers, *rcsdate, *tmp;
-
- rcsvers = strchr(rcsid, ' ');
- rcsvers++;
- tmp = strchr(rcsvers, ' ');
- *tmp++ = '\0';
- rcsdate = strchr(tmp, ' ');
- rcsdate++;
- tmp = strrchr(rcsdate, ' ');
- *tmp = '\0';
- pr_info("Cyclades-PC300 driver %s %s\n", rcsvers, rcsdate);
-} /* show_version */
-
-static const struct net_device_ops cpc_netdev_ops = {
- .ndo_open = cpc_open,
- .ndo_stop = cpc_close,
- .ndo_tx_timeout = cpc_tx_timeout,
- .ndo_set_mac_address = NULL,
- .ndo_change_mtu = cpc_change_mtu,
- .ndo_do_ioctl = cpc_ioctl,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static void cpc_init_card(pc300_t * card)
-{
- int i, devcount = 0;
- static int board_nbr = 1;
-
- /* Enable interrupts on the PCI bridge */
- plx_init(card);
- cpc_writew(card->hw.plxbase + card->hw.intctl_reg,
- cpc_readw(card->hw.plxbase + card->hw.intctl_reg) | 0x0040);
-
-#ifdef USE_PCI_CLOCK
- /* Set board clock to PCI clock */
- cpc_writel(card->hw.plxbase + card->hw.gpioc_reg,
- cpc_readl(card->hw.plxbase + card->hw.gpioc_reg) | 0x00000004UL);
- card->hw.clock = PC300_PCI_CLOCK;
-#else
- /* Set board clock to internal oscillator clock */
- cpc_writel(card->hw.plxbase + card->hw.gpioc_reg,
- cpc_readl(card->hw.plxbase + card->hw.gpioc_reg) & ~0x00000004UL);
- card->hw.clock = PC300_OSC_CLOCK;
-#endif
-
- /* Detect actual on-board RAM size */
- card->hw.ramsize = detect_ram(card);
-
- /* Set Global SCA-II registers */
- cpc_writeb(card->hw.scabase + PCR, PCR_PR2);
- cpc_writeb(card->hw.scabase + BTCR, 0x10);
- cpc_writeb(card->hw.scabase + WCRL, 0);
- cpc_writeb(card->hw.scabase + DMER, 0x80);
-
- if (card->hw.type == PC300_TE) {
- u8 reg1;
-
- /* Check CPLD version */
- reg1 = cpc_readb(card->hw.falcbase + CPLD_REG1);
- cpc_writeb(card->hw.falcbase + CPLD_REG1, (reg1 + 0x5a));
- if (cpc_readb(card->hw.falcbase + CPLD_REG1) == reg1) {
- /* New CPLD */
- card->hw.cpld_id = cpc_readb(card->hw.falcbase + CPLD_ID_REG);
- card->hw.cpld_reg1 = CPLD_V2_REG1;
- card->hw.cpld_reg2 = CPLD_V2_REG2;
- } else {
- /* old CPLD */
- card->hw.cpld_id = 0;
- card->hw.cpld_reg1 = CPLD_REG1;
- card->hw.cpld_reg2 = CPLD_REG2;
- cpc_writeb(card->hw.falcbase + CPLD_REG1, reg1);
- }
-
- /* Enable the board's global clock */
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
- CPLD_REG1_GLOBAL_CLK);
-
- }
-
- for (i = 0; i < card->hw.nchan; i++) {
- pc300ch_t *chan = &card->chan[i];
- pc300dev_t *d = &chan->d;
- hdlc_device *hdlc;
- struct net_device *dev;
-
- chan->card = card;
- chan->channel = i;
- chan->conf.phys_settings.clock_rate = 0;
- chan->conf.phys_settings.clock_type = CLOCK_EXT;
- chan->conf.proto_settings.encoding = ENCODING_NRZ;
- chan->conf.proto_settings.parity = PARITY_CRC16_PR1_CCITT;
- switch (card->hw.type) {
- case PC300_TE:
- chan->conf.media = IF_IFACE_T1;
- chan->conf.lcode = PC300_LC_B8ZS;
- chan->conf.fr_mode = PC300_FR_ESF;
- chan->conf.lbo = PC300_LBO_0_DB;
- chan->conf.rx_sens = PC300_RX_SENS_SH;
- chan->conf.tslot_bitmap = 0xffffffffUL;
- break;
-
- case PC300_X21:
- chan->conf.media = IF_IFACE_X21;
- break;
-
- case PC300_RSV:
- default:
- chan->conf.media = IF_IFACE_V35;
- break;
- }
- chan->conf.proto = IF_PROTO_PPP;
- chan->tx_first_bd = 0;
- chan->tx_next_bd = 0;
- chan->rx_first_bd = 0;
- chan->rx_last_bd = N_DMA_RX_BUF - 1;
- chan->nfree_tx_bd = N_DMA_TX_BUF;
-
- d->chan = chan;
- d->trace_on = 0;
- d->line_on = 0;
- d->line_off = 0;
-
- dev = alloc_hdlcdev(d);
- if (dev == NULL)
- continue;
-
- hdlc = dev_to_hdlc(dev);
- hdlc->xmit = cpc_queue_xmit;
- hdlc->attach = cpc_attach;
- d->dev = dev;
- dev->mem_start = card->hw.ramphys;
- dev->mem_end = card->hw.ramphys + card->hw.ramsize - 1;
- dev->irq = card->hw.irq;
- dev->tx_queue_len = PC300_TX_QUEUE_LEN;
- dev->mtu = PC300_DEF_MTU;
-
- dev->netdev_ops = &cpc_netdev_ops;
- dev->watchdog_timeo = PC300_TX_TIMEOUT;
-
- if (register_hdlc_device(dev) == 0) {
- printk("%s: Cyclades-PC300/", dev->name);
- switch (card->hw.type) {
- case PC300_TE:
- if (card->hw.bus == PC300_PMC) {
- printk("TE-M");
- } else {
- printk("TE ");
- }
- break;
-
- case PC300_X21:
- printk("X21 ");
- break;
-
- case PC300_RSV:
- default:
- printk("RSV ");
- break;
- }
- printk (" #%d, %dKB of RAM at 0x%08x, IRQ%d, channel %d.\n",
- board_nbr, card->hw.ramsize / 1024,
- card->hw.ramphys, card->hw.irq, i + 1);
- devcount++;
- } else {
- printk ("Dev%d on card(0x%08x): unable to allocate i/f name.\n",
- i + 1, card->hw.ramphys);
- free_netdev(dev);
- continue;
- }
- }
- spin_lock_init(&card->card_lock);
-
- board_nbr++;
-}
-
-static int
-cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
- int err, eeprom_outdated = 0;
- u16 device_id;
- pc300_t *card;
-
- if ((err = pci_enable_device(pdev)) < 0)
- return err;
-
- card = kzalloc(sizeof(pc300_t), GFP_KERNEL);
- if (card == NULL) {
- printk("PC300 found at RAM 0x%016llx, "
- "but could not allocate card structure.\n",
- (unsigned long long)pci_resource_start(pdev, 3));
- err = -ENOMEM;
- goto err_disable_dev;
- }
-
- err = -ENODEV;
-
- /* read PCI configuration area */
- device_id = ent->device;
- card->hw.irq = pdev->irq;
- card->hw.iophys = pci_resource_start(pdev, 1);
- card->hw.iosize = pci_resource_len(pdev, 1);
- card->hw.scaphys = pci_resource_start(pdev, 2);
- card->hw.scasize = pci_resource_len(pdev, 2);
- card->hw.ramphys = pci_resource_start(pdev, 3);
- card->hw.alloc_ramsize = pci_resource_len(pdev, 3);
- card->hw.falcphys = pci_resource_start(pdev, 4);
- card->hw.falcsize = pci_resource_len(pdev, 4);
- card->hw.plxphys = pci_resource_start(pdev, 5);
- card->hw.plxsize = pci_resource_len(pdev, 5);
-
- switch (device_id) {
- case PCI_DEVICE_ID_PC300_RX_1:
- case PCI_DEVICE_ID_PC300_TE_1:
- case PCI_DEVICE_ID_PC300_TE_M_1:
- card->hw.nchan = 1;
- break;
-
- case PCI_DEVICE_ID_PC300_RX_2:
- case PCI_DEVICE_ID_PC300_TE_2:
- case PCI_DEVICE_ID_PC300_TE_M_2:
- default:
- card->hw.nchan = PC300_MAXCHAN;
- break;
- }
-#ifdef PC300_DEBUG_PCI
- printk("cpc (bus=0x0%x,pci_id=0x%x,", pdev->bus->number, pdev->devfn);
- printk("rev_id=%d) IRQ%d\n", pdev->revision, card->hw.irq);
- printk("cpc:found ramaddr=0x%08lx plxaddr=0x%08lx "
- "ctladdr=0x%08lx falcaddr=0x%08lx\n",
- card->hw.ramphys, card->hw.plxphys, card->hw.scaphys,
- card->hw.falcphys);
-#endif
- /* Although we don't use this I/O region, we should
- * request it from the kernel anyway, to avoid problems
- * with other drivers accessing it. */
- if (!request_region(card->hw.iophys, card->hw.iosize, "PLX Registers")) {
- /* In case we can't allocate it, warn user */
- printk("WARNING: couldn't allocate I/O region for PC300 board "
- "at 0x%08x!\n", card->hw.ramphys);
- }
-
- if (card->hw.plxphys) {
- pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, card->hw.plxphys);
- } else {
- eeprom_outdated = 1;
- card->hw.plxphys = pci_resource_start(pdev, 0);
- card->hw.plxsize = pci_resource_len(pdev, 0);
- }
-
- if (!request_mem_region(card->hw.plxphys, card->hw.plxsize,
- "PLX Registers")) {
- printk("PC300 found at RAM 0x%08x, "
- "but could not allocate PLX mem region.\n",
- card->hw.ramphys);
- goto err_release_io;
- }
- if (!request_mem_region(card->hw.ramphys, card->hw.alloc_ramsize,
- "On-board RAM")) {
- printk("PC300 found at RAM 0x%08x, "
- "but could not allocate RAM mem region.\n",
- card->hw.ramphys);
- goto err_release_plx;
- }
- if (!request_mem_region(card->hw.scaphys, card->hw.scasize,
- "SCA-II Registers")) {
- printk("PC300 found at RAM 0x%08x, "
- "but could not allocate SCA mem region.\n",
- card->hw.ramphys);
- goto err_release_ram;
- }
-
- card->hw.plxbase = ioremap(card->hw.plxphys, card->hw.plxsize);
- card->hw.rambase = ioremap(card->hw.ramphys, card->hw.alloc_ramsize);
- card->hw.scabase = ioremap(card->hw.scaphys, card->hw.scasize);
- switch (device_id) {
- case PCI_DEVICE_ID_PC300_TE_1:
- case PCI_DEVICE_ID_PC300_TE_2:
- case PCI_DEVICE_ID_PC300_TE_M_1:
- case PCI_DEVICE_ID_PC300_TE_M_2:
- request_mem_region(card->hw.falcphys, card->hw.falcsize,
- "FALC Registers");
- card->hw.falcbase = ioremap(card->hw.falcphys, card->hw.falcsize);
- break;
-
- case PCI_DEVICE_ID_PC300_RX_1:
- case PCI_DEVICE_ID_PC300_RX_2:
- default:
- card->hw.falcbase = NULL;
- break;
- }
-
-#ifdef PC300_DEBUG_PCI
- printk("cpc: relocate ramaddr=0x%08lx plxaddr=0x%08lx "
- "ctladdr=0x%08lx falcaddr=0x%08lx\n",
- card->hw.rambase, card->hw.plxbase, card->hw.scabase,
- card->hw.falcbase);
-#endif
-
- /* Set PCI drv pointer to the card structure */
- pci_set_drvdata(pdev, card);
-
- /* Set board type */
- switch (device_id) {
- case PCI_DEVICE_ID_PC300_TE_1:
- case PCI_DEVICE_ID_PC300_TE_2:
- case PCI_DEVICE_ID_PC300_TE_M_1:
- case PCI_DEVICE_ID_PC300_TE_M_2:
- card->hw.type = PC300_TE;
-
- if ((device_id == PCI_DEVICE_ID_PC300_TE_M_1) ||
- (device_id == PCI_DEVICE_ID_PC300_TE_M_2)) {
- card->hw.bus = PC300_PMC;
- /* Set PLX register offsets */
- card->hw.gpioc_reg = 0x54;
- card->hw.intctl_reg = 0x4c;
- } else {
- card->hw.bus = PC300_PCI;
- /* Set PLX register offsets */
- card->hw.gpioc_reg = 0x50;
- card->hw.intctl_reg = 0x4c;
- }
- break;
-
- case PCI_DEVICE_ID_PC300_RX_1:
- case PCI_DEVICE_ID_PC300_RX_2:
- default:
- card->hw.bus = PC300_PCI;
- /* Set PLX register offsets */
- card->hw.gpioc_reg = 0x50;
- card->hw.intctl_reg = 0x4c;
-
- if ((cpc_readl(card->hw.plxbase + card->hw.gpioc_reg) & PC300_CTYPE_MASK)) {
- card->hw.type = PC300_X21;
- } else {
- card->hw.type = PC300_RSV;
- }
- break;
- }
-
- /* Allocate IRQ */
- if (request_irq(card->hw.irq, cpc_intr, IRQF_SHARED, "Cyclades-PC300", card)) {
- printk ("PC300 found at RAM 0x%08x, but could not allocate IRQ%d.\n",
- card->hw.ramphys, card->hw.irq);
- goto err_io_unmap;
- }
-
- cpc_init_card(card);
-
- if (eeprom_outdated)
- printk("WARNING: PC300 with outdated EEPROM.\n");
- return 0;
-
-err_io_unmap:
- iounmap(card->hw.plxbase);
- iounmap(card->hw.scabase);
- iounmap(card->hw.rambase);
- if (card->hw.type == PC300_TE) {
- iounmap(card->hw.falcbase);
- release_mem_region(card->hw.falcphys, card->hw.falcsize);
- }
- release_mem_region(card->hw.scaphys, card->hw.scasize);
-err_release_ram:
- release_mem_region(card->hw.ramphys, card->hw.alloc_ramsize);
-err_release_plx:
- release_mem_region(card->hw.plxphys, card->hw.plxsize);
-err_release_io:
- release_region(card->hw.iophys, card->hw.iosize);
- kfree(card);
-err_disable_dev:
- pci_disable_device(pdev);
- return err;
-}
-
-static void cpc_remove_one(struct pci_dev *pdev)
-{
- pc300_t *card = pci_get_drvdata(pdev);
-
- if (card->hw.rambase) {
- int i;
-
- /* Disable interrupts on the PCI bridge */
- cpc_writew(card->hw.plxbase + card->hw.intctl_reg,
- cpc_readw(card->hw.plxbase + card->hw.intctl_reg) & ~(0x0040));
-
- for (i = 0; i < card->hw.nchan; i++) {
- unregister_hdlc_device(card->chan[i].d.dev);
- }
- iounmap(card->hw.plxbase);
- iounmap(card->hw.scabase);
- iounmap(card->hw.rambase);
- release_mem_region(card->hw.plxphys, card->hw.plxsize);
- release_mem_region(card->hw.ramphys, card->hw.alloc_ramsize);
- release_mem_region(card->hw.scaphys, card->hw.scasize);
- release_region(card->hw.iophys, card->hw.iosize);
- if (card->hw.type == PC300_TE) {
- iounmap(card->hw.falcbase);
- release_mem_region(card->hw.falcphys, card->hw.falcsize);
- }
- for (i = 0; i < card->hw.nchan; i++)
- if (card->chan[i].d.dev)
- free_netdev(card->chan[i].d.dev);
- if (card->hw.irq)
- free_irq(card->hw.irq, card);
- kfree(card);
- pci_disable_device(pdev);
- }
-}
-
-static struct pci_driver cpc_driver = {
- .name = "pc300",
- .id_table = cpc_pci_dev_id,
- .probe = cpc_init_one,
- .remove = cpc_remove_one,
-};
-
-static int __init cpc_init(void)
-{
- show_version();
- return pci_register_driver(&cpc_driver);
-}
-
-static void __exit cpc_cleanup_module(void)
-{
- pci_unregister_driver(&cpc_driver);
-}
-
-module_init(cpc_init);
-module_exit(cpc_cleanup_module);
-
-MODULE_DESCRIPTION("Cyclades-PC300 cards driver");
-MODULE_AUTHOR( "Author: Ivan Passos <ivan@cyclades.com>\r\n"
- "Maintainer: PC300 Maintainer <pc300@cyclades.com");
-MODULE_LICENSE("GPL");
-
+++ /dev/null
-/*
- * pc300_tty.c Cyclades-PC300(tm) TTY Driver.
- *
- * Author: Regina Kodato <reginak@cyclades.com>
- *
- * Copyright: (c) 1999-2002 Cyclades Corp.
- *
- * 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.
- *
- * $Log: pc300_tty.c,v $
- * Revision 3.7 2002/03/07 14:17:09 henrique
- * License data fixed
- *
- * Revision 3.6 2001/12/10 12:29:42 regina
- * Fix the MLPPP bug
- *
- * Revision 3.5 2001/10/31 11:20:05 regina
- * automatic pppd starts
- *
- * Revision 3.4 2001/08/06 12:01:51 regina
- * problem in DSR_DE bit
- *
- * Revision 3.3 2001/07/26 22:58:41 regina
- * update EDA value
- *
- * Revision 3.2 2001/07/12 13:11:20 regina
- * bug fix - DCD-OFF in pc300 tty driver
- *
- * DMA transmission bug fix
- *
- * Revision 3.1 2001/06/22 13:13:02 regina
- * MLPPP implementation
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/spinlock.h>
-#include <linux/slab.h>
-#include <linux/if.h>
-#include <linux/skbuff.h>
-/* TTY includes */
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
-#include "pc300.h"
-
-/* defines and macros */
-/* TTY Global definitions */
-#define CPC_TTY_NPORTS 8 /* maximum number of the sync tty connections */
-#define CPC_TTY_MAJOR CYCLADES_MAJOR
-#define CPC_TTY_MINOR_START 240 /* minor of the first PC300 interface */
-
-#define CPC_TTY_MAX_MTU 2000
-
-/* tty interface state */
-#define CPC_TTY_ST_IDLE 0
-#define CPC_TTY_ST_INIT 1 /* configured with MLPPP and up */
-#define CPC_TTY_ST_OPEN 2 /* opened by application */
-
-#define CPC_TTY_LOCK(card,flags)\
- do {\
- spin_lock_irqsave(&card->card_lock, flags); \
- } while (0)
-
-#define CPC_TTY_UNLOCK(card,flags) \
- do {\
- spin_unlock_irqrestore(&card->card_lock, flags); \
- } while (0)
-
-//#define CPC_TTY_DBG(format,a...) printk(format,##a)
-#define CPC_TTY_DBG(format,a...)
-
-/* data structures */
-typedef struct _st_cpc_rx_buf {
- struct _st_cpc_rx_buf *next;
- int size;
- unsigned char data[1];
-} st_cpc_rx_buf;
-
-struct st_cpc_rx_list {
- st_cpc_rx_buf *first;
- st_cpc_rx_buf *last;
-};
-
-typedef struct _st_cpc_tty_area {
- int state; /* state of the TTY interface */
- int num_open;
- unsigned int tty_minor; /* minor this interface */
- volatile struct st_cpc_rx_list buf_rx; /* ptr. to reception buffer */
- unsigned char* buf_tx; /* ptr. to transmission buffer */
- pc300dev_t* pc300dev; /* ptr. to info struct in PC300 driver */
- unsigned char name[20]; /* interf. name + "-tty" */
- struct tty_struct *tty;
- struct work_struct tty_tx_work; /* tx work - tx interrupt */
- struct work_struct tty_rx_work; /* rx work - rx interrupt */
- } st_cpc_tty_area;
-
-/* TTY data structures */
-static struct tty_driver serial_drv;
-
-/* local variables */
-static st_cpc_tty_area cpc_tty_area[CPC_TTY_NPORTS];
-
-static int cpc_tty_cnt = 0; /* number of intrfaces configured with MLPPP */
-static int cpc_tty_unreg_flag = 0;
-
-/* TTY functions prototype */
-static int cpc_tty_open(struct tty_struct *tty, struct file *flip);
-static void cpc_tty_close(struct tty_struct *tty, struct file *flip);
-static int cpc_tty_write(struct tty_struct *tty, const unsigned char *buf, int count);
-static int cpc_tty_write_room(struct tty_struct *tty);
-static int cpc_tty_chars_in_buffer(struct tty_struct *tty);
-static void cpc_tty_flush_buffer(struct tty_struct *tty);
-static void cpc_tty_hangup(struct tty_struct *tty);
-static void cpc_tty_rx_work(struct work_struct *work);
-static void cpc_tty_tx_work(struct work_struct *work);
-static int cpc_tty_send_to_card(pc300dev_t *dev,void *buf, int len);
-static void cpc_tty_trace(pc300dev_t *dev, char* buf, int len, char rxtx);
-static void cpc_tty_signal_off(pc300dev_t *pc300dev, unsigned char);
-static void cpc_tty_signal_on(pc300dev_t *pc300dev, unsigned char);
-
-static int pc300_tiocmset(struct tty_struct *, unsigned int, unsigned int);
-static int pc300_tiocmget(struct tty_struct *);
-
-/* functions called by PC300 driver */
-void cpc_tty_init(pc300dev_t *dev);
-void cpc_tty_unregister_service(pc300dev_t *pc300dev);
-void cpc_tty_receive(pc300dev_t *pc300dev);
-void cpc_tty_trigger_poll(pc300dev_t *pc300dev);
-
-/*
- * PC300 TTY clear "signal"
- */
-static void cpc_tty_signal_off(pc300dev_t *pc300dev, unsigned char signal)
-{
- pc300ch_t *pc300chan = (pc300ch_t *)pc300dev->chan;
- pc300_t *card = (pc300_t *) pc300chan->card;
- int ch = pc300chan->channel;
- unsigned long flags;
-
- CPC_TTY_DBG("%s-tty: Clear signal %x\n",
- pc300dev->dev->name, signal);
- CPC_TTY_LOCK(card, flags);
- cpc_writeb(card->hw.scabase + M_REG(CTL,ch),
- cpc_readb(card->hw.scabase+M_REG(CTL,ch))& signal);
- CPC_TTY_UNLOCK(card,flags);
-}
-
-/*
- * PC300 TTY set "signal" to ON
- */
-static void cpc_tty_signal_on(pc300dev_t *pc300dev, unsigned char signal)
-{
- pc300ch_t *pc300chan = (pc300ch_t *)pc300dev->chan;
- pc300_t *card = (pc300_t *) pc300chan->card;
- int ch = pc300chan->channel;
- unsigned long flags;
-
- CPC_TTY_DBG("%s-tty: Set signal %x\n",
- pc300dev->dev->name, signal);
- CPC_TTY_LOCK(card, flags);
- cpc_writeb(card->hw.scabase + M_REG(CTL,ch),
- cpc_readb(card->hw.scabase+M_REG(CTL,ch))& ~signal);
- CPC_TTY_UNLOCK(card,flags);
-}
-
-
-static const struct tty_operations pc300_ops = {
- .open = cpc_tty_open,
- .close = cpc_tty_close,
- .write = cpc_tty_write,
- .write_room = cpc_tty_write_room,
- .chars_in_buffer = cpc_tty_chars_in_buffer,
- .tiocmset = pc300_tiocmset,
- .tiocmget = pc300_tiocmget,
- .flush_buffer = cpc_tty_flush_buffer,
- .hangup = cpc_tty_hangup,
-};
-
-
-/*
- * PC300 TTY initialization routine
- *
- * This routine is called by the PC300 driver during board configuration
- * (ioctl=SIOCSP300CONF). At this point the adapter is completely
- * initialized.
- * o verify kernel version (only 2.4.x)
- * o register TTY driver
- * o init cpc_tty_area struct
- */
-void cpc_tty_init(pc300dev_t *pc300dev)
-{
- unsigned long port;
- int aux;
- st_cpc_tty_area * cpc_tty;
-
- /* hdlcX - X=interface number */
- port = pc300dev->dev->name[4] - '0';
- if (port >= CPC_TTY_NPORTS) {
- printk("%s-tty: invalid interface selected (0-%i): %li",
- pc300dev->dev->name,
- CPC_TTY_NPORTS-1,port);
- return;
- }
-
- if (cpc_tty_cnt == 0) { /* first TTY connection -> register driver */
- CPC_TTY_DBG("%s-tty: driver init, major:%i, minor range:%i=%i\n",
- pc300dev->dev->name,
- CPC_TTY_MAJOR, CPC_TTY_MINOR_START,
- CPC_TTY_MINOR_START+CPC_TTY_NPORTS);
- /* initialize tty driver struct */
- memset(&serial_drv,0,sizeof(struct tty_driver));
- serial_drv.magic = TTY_DRIVER_MAGIC;
- serial_drv.owner = THIS_MODULE;
- serial_drv.driver_name = "pc300_tty";
- serial_drv.name = "ttyCP";
- serial_drv.major = CPC_TTY_MAJOR;
- serial_drv.minor_start = CPC_TTY_MINOR_START;
- serial_drv.num = CPC_TTY_NPORTS;
- serial_drv.type = TTY_DRIVER_TYPE_SERIAL;
- serial_drv.subtype = SERIAL_TYPE_NORMAL;
-
- serial_drv.init_termios = tty_std_termios;
- serial_drv.init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
- serial_drv.flags = TTY_DRIVER_REAL_RAW;
-
- /* interface routines from the upper tty layer to the tty driver */
- tty_set_operations(&serial_drv, &pc300_ops);
-
- /* register the TTY driver */
- if (tty_register_driver(&serial_drv)) {
- printk("%s-tty: Failed to register serial driver! ",
- pc300dev->dev->name);
- return;
- }
-
- memset((void *)cpc_tty_area, 0,
- sizeof(st_cpc_tty_area) * CPC_TTY_NPORTS);
- }
-
- cpc_tty = &cpc_tty_area[port];
-
- if (cpc_tty->state != CPC_TTY_ST_IDLE) {
- CPC_TTY_DBG("%s-tty: TTY port %i, already in use.\n",
- pc300dev->dev->name, port);
- return;
- }
-
- cpc_tty_cnt++;
- cpc_tty->state = CPC_TTY_ST_INIT;
- cpc_tty->num_open= 0;
- cpc_tty->tty_minor = port + CPC_TTY_MINOR_START;
- cpc_tty->pc300dev = pc300dev;
-
- INIT_WORK(&cpc_tty->tty_tx_work, cpc_tty_tx_work);
- INIT_WORK(&cpc_tty->tty_rx_work, cpc_tty_rx_work);
-
- cpc_tty->buf_rx.first = cpc_tty->buf_rx.last = NULL;
-
- pc300dev->cpc_tty = (void *)cpc_tty;
-
- aux = strlen(pc300dev->dev->name);
- memcpy(cpc_tty->name, pc300dev->dev->name, aux);
- memcpy(&cpc_tty->name[aux], "-tty", 5);
-
- cpc_open(pc300dev->dev);
- cpc_tty_signal_off(pc300dev, CTL_DTR);
-
- CPC_TTY_DBG("%s: Initializing TTY Sync Driver, tty major#%d minor#%i\n",
- cpc_tty->name,CPC_TTY_MAJOR,cpc_tty->tty_minor);
- return;
-}
-
-/*
- * PC300 TTY OPEN routine
- *
- * This routine is called by the tty driver to open the interface
- * o verify minor
- * o allocate buffer to Rx and Tx
- */
-static int cpc_tty_open(struct tty_struct *tty, struct file *flip)
-{
- int port ;
- st_cpc_tty_area *cpc_tty;
-
- if (!tty) {
- return -ENODEV;
- }
-
- port = tty->index;
-
- if ((port < 0) || (port >= CPC_TTY_NPORTS)){
- CPC_TTY_DBG("pc300_tty: open invalid port %d\n", port);
- return -ENODEV;
- }
-
- cpc_tty = &cpc_tty_area[port];
-
- if (cpc_tty->state == CPC_TTY_ST_IDLE){
- CPC_TTY_DBG("%s: open - invalid interface, port=%d\n",
- cpc_tty->name, tty->index);
- return -ENODEV;
- }
-
- if (cpc_tty->num_open == 0) { /* first open of this tty */
- if (!cpc_tty_area[port].buf_tx){
- cpc_tty_area[port].buf_tx = kmalloc(CPC_TTY_MAX_MTU,GFP_KERNEL);
- if (!cpc_tty_area[port].buf_tx) {
- CPC_TTY_DBG("%s: error in memory allocation\n",cpc_tty->name);
- return -ENOMEM;
- }
- }
-
- if (cpc_tty_area[port].buf_rx.first) {
- unsigned char * aux;
- while (cpc_tty_area[port].buf_rx.first) {
- aux = (unsigned char *)cpc_tty_area[port].buf_rx.first;
- cpc_tty_area[port].buf_rx.first = cpc_tty_area[port].buf_rx.first->next;
- kfree(aux);
- }
- cpc_tty_area[port].buf_rx.first = NULL;
- cpc_tty_area[port].buf_rx.last = NULL;
- }
-
- cpc_tty_area[port].state = CPC_TTY_ST_OPEN;
- cpc_tty_area[port].tty = tty;
- tty->driver_data = &cpc_tty_area[port];
-
- cpc_tty_signal_on(cpc_tty->pc300dev, CTL_DTR);
- }
-
- cpc_tty->num_open++;
-
- CPC_TTY_DBG("%s: opening TTY driver\n", cpc_tty->name);
-
- /* avisar driver PC300 */
- return 0;
-}
-
-/*
- * PC300 TTY CLOSE routine
- *
- * This routine is called by the tty driver to close the interface
- * o call close channel in PC300 driver (cpc_closech)
- * o free Rx and Tx buffers
- */
-
-static void cpc_tty_close(struct tty_struct *tty, struct file *flip)
-{
- st_cpc_tty_area *cpc_tty;
- unsigned long flags;
- int res;
-
- if (!tty || !tty->driver_data ) {
- CPC_TTY_DBG("hdlx-tty: no TTY in close\n");
- return;
- }
-
- cpc_tty = (st_cpc_tty_area *) tty->driver_data;
-
- if ((cpc_tty->tty != tty)|| (cpc_tty->state != CPC_TTY_ST_OPEN)) {
- CPC_TTY_DBG("%s: TTY is not opened\n",cpc_tty->name);
- return;
- }
-
- if (!cpc_tty->num_open) {
- CPC_TTY_DBG("%s: TTY is closed\n",cpc_tty->name);
- return;
- }
-
- if (--cpc_tty->num_open > 0) {
- CPC_TTY_DBG("%s: TTY closed\n",cpc_tty->name);
- return;
- }
-
- cpc_tty_signal_off(cpc_tty->pc300dev, CTL_DTR);
-
- CPC_TTY_LOCK(cpc_tty->pc300dev->chan->card, flags); /* lock irq */
- cpc_tty->tty = NULL;
- cpc_tty->state = CPC_TTY_ST_INIT;
- CPC_TTY_UNLOCK(cpc_tty->pc300dev->chan->card, flags); /* unlock irq */
-
- if (cpc_tty->buf_rx.first) {
- unsigned char * aux;
- while (cpc_tty->buf_rx.first) {
- aux = (unsigned char *)cpc_tty->buf_rx.first;
- cpc_tty->buf_rx.first = cpc_tty->buf_rx.first->next;
- kfree(aux);
- }
- cpc_tty->buf_rx.first = NULL;
- cpc_tty->buf_rx.last = NULL;
- }
-
- kfree(cpc_tty->buf_tx);
- cpc_tty->buf_tx = NULL;
-
- CPC_TTY_DBG("%s: TTY closed\n",cpc_tty->name);
-
- if (!serial_drv.refcount && cpc_tty_unreg_flag) {
- cpc_tty_unreg_flag = 0;
- CPC_TTY_DBG("%s: unregister the tty driver\n", cpc_tty->name);
- if ((res=tty_unregister_driver(&serial_drv))) {
- CPC_TTY_DBG("%s: ERROR ->unregister the tty driver error=%d\n",
- cpc_tty->name,res);
- }
- }
- return;
-}
-
-/*
- * PC300 TTY WRITE routine
- *
- * This routine is called by the tty driver to write a series of characters
- * to the tty device. The characters may come from user or kernel space.
- * o verify the DCD signal
- * o send characters to board and start the transmission
- */
-static int cpc_tty_write(struct tty_struct *tty, const unsigned char *buf, int count)
-{
- st_cpc_tty_area *cpc_tty;
- pc300ch_t *pc300chan;
- pc300_t *card;
- int ch;
- unsigned long flags;
- struct net_device_stats *stats;
-
- if (!tty || !tty->driver_data ) {
- CPC_TTY_DBG("hdlcX-tty: no TTY in write\n");
- return -ENODEV;
- }
-
- cpc_tty = (st_cpc_tty_area *) tty->driver_data;
-
- if ((cpc_tty->tty != tty) || (cpc_tty->state != CPC_TTY_ST_OPEN)) {
- CPC_TTY_DBG("%s: TTY is not opened\n", cpc_tty->name);
- return -ENODEV;
- }
-
- if (count > CPC_TTY_MAX_MTU) {
- CPC_TTY_DBG("%s: count is invalid\n",cpc_tty->name);
- return -EINVAL; /* frame too big */
- }
-
- CPC_TTY_DBG("%s: cpc_tty_write data len=%i\n",cpc_tty->name,count);
-
- pc300chan = (pc300ch_t *)((pc300dev_t*)cpc_tty->pc300dev)->chan;
- stats = &cpc_tty->pc300dev->dev->stats;
- card = (pc300_t *) pc300chan->card;
- ch = pc300chan->channel;
-
- /* verify DCD signal*/
- if (cpc_readb(card->hw.scabase + M_REG(ST3,ch)) & ST3_DCD) {
- /* DCD is OFF */
- CPC_TTY_DBG("%s : DCD is OFF\n", cpc_tty->name);
- stats->tx_errors++;
- stats->tx_carrier_errors++;
- CPC_TTY_LOCK(card, flags);
- cpc_writeb(card->hw.scabase + M_REG(CMD, ch), CMD_TX_BUF_CLR);
-
- if (card->hw.type == PC300_TE) {
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) &
- ~(CPLD_REG2_FALC_LED1 << (2 *ch)));
- }
-
- CPC_TTY_UNLOCK(card, flags);
-
- return -EINVAL;
- }
-
- if (cpc_tty_send_to_card(cpc_tty->pc300dev, (void*)buf, count)) {
- /* failed to send */
- CPC_TTY_DBG("%s: trasmition error\n", cpc_tty->name);
- return 0;
- }
- return count;
-}
-
-/*
- * PC300 TTY Write Room routine
- *
- * This routine returns the numbers of characteres the tty driver will accept
- * for queuing to be written.
- * o return MTU
- */
-static int cpc_tty_write_room(struct tty_struct *tty)
-{
- st_cpc_tty_area *cpc_tty;
-
- if (!tty || !tty->driver_data ) {
- CPC_TTY_DBG("hdlcX-tty: no TTY to write room\n");
- return -ENODEV;
- }
-
- cpc_tty = (st_cpc_tty_area *) tty->driver_data;
-
- if ((cpc_tty->tty != tty) || (cpc_tty->state != CPC_TTY_ST_OPEN)) {
- CPC_TTY_DBG("%s: TTY is not opened\n",cpc_tty->name);
- return -ENODEV;
- }
-
- CPC_TTY_DBG("%s: write room\n",cpc_tty->name);
-
- return CPC_TTY_MAX_MTU;
-}
-
-/*
- * PC300 TTY chars in buffer routine
- *
- * This routine returns the chars number in the transmission buffer
- * o returns 0
- */
-static int cpc_tty_chars_in_buffer(struct tty_struct *tty)
-{
- st_cpc_tty_area *cpc_tty;
-
- if (!tty || !tty->driver_data ) {
- CPC_TTY_DBG("hdlcX-tty: no TTY to chars in buffer\n");
- return -ENODEV;
- }
-
- cpc_tty = (st_cpc_tty_area *) tty->driver_data;
-
- if ((cpc_tty->tty != tty) || (cpc_tty->state != CPC_TTY_ST_OPEN)) {
- CPC_TTY_DBG("%s: TTY is not opened\n",cpc_tty->name);
- return -ENODEV;
- }
-
- return 0;
-}
-
-static int pc300_tiocmset(struct tty_struct *tty,
- unsigned int set, unsigned int clear)
-{
- st_cpc_tty_area *cpc_tty;
-
- CPC_TTY_DBG("%s: set:%x clear:%x\n", __func__, set, clear);
-
- if (!tty || !tty->driver_data ) {
- CPC_TTY_DBG("hdlcX-tty: no TTY to chars in buffer\n");
- return -ENODEV;
- }
-
- cpc_tty = (st_cpc_tty_area *) tty->driver_data;
-
- if (set & TIOCM_RTS)
- cpc_tty_signal_on(cpc_tty->pc300dev, CTL_RTS);
- if (set & TIOCM_DTR)
- cpc_tty_signal_on(cpc_tty->pc300dev, CTL_DTR);
-
- if (clear & TIOCM_RTS)
- cpc_tty_signal_off(cpc_tty->pc300dev, CTL_RTS);
- if (clear & TIOCM_DTR)
- cpc_tty_signal_off(cpc_tty->pc300dev, CTL_DTR);
-
- return 0;
-}
-
-static int pc300_tiocmget(struct tty_struct *tty)
-{
- unsigned int result;
- unsigned char status;
- unsigned long flags;
- st_cpc_tty_area *cpc_tty = (st_cpc_tty_area *) tty->driver_data;
- pc300dev_t *pc300dev = cpc_tty->pc300dev;
- pc300ch_t *pc300chan = (pc300ch_t *)pc300dev->chan;
- pc300_t *card = (pc300_t *) pc300chan->card;
- int ch = pc300chan->channel;
-
- cpc_tty = (st_cpc_tty_area *) tty->driver_data;
-
- CPC_TTY_DBG("%s-tty: tiocmget\n",
- ((struct net_device*)(pc300dev->hdlc))->name);
-
- CPC_TTY_LOCK(card, flags);
- status = cpc_readb(card->hw.scabase+M_REG(CTL,ch));
- CPC_TTY_UNLOCK(card,flags);
-
- result = ((status & CTL_DTR) ? TIOCM_DTR : 0) |
- ((status & CTL_RTS) ? TIOCM_RTS : 0);
-
- return result;
-}
-
-/*
- * PC300 TTY Flush Buffer routine
- *
- * This routine resets the transmission buffer
- */
-static void cpc_tty_flush_buffer(struct tty_struct *tty)
-{
- st_cpc_tty_area *cpc_tty;
-
- if (!tty || !tty->driver_data ) {
- CPC_TTY_DBG("hdlcX-tty: no TTY to flush buffer\n");
- return;
- }
-
- cpc_tty = (st_cpc_tty_area *) tty->driver_data;
-
- if ((cpc_tty->tty != tty) || (cpc_tty->state != CPC_TTY_ST_OPEN)) {
- CPC_TTY_DBG("%s: TTY is not opened\n",cpc_tty->name);
- return;
- }
-
- CPC_TTY_DBG("%s: call wake_up_interruptible\n",cpc_tty->name);
-
- tty_wakeup(tty);
- return;
-}
-
-/*
- * PC300 TTY Hangup routine
- *
- * This routine is called by the tty driver to hangup the interface
- * o clear DTR signal
- */
-
-static void cpc_tty_hangup(struct tty_struct *tty)
-{
- st_cpc_tty_area *cpc_tty;
- int res;
-
- if (!tty || !tty->driver_data ) {
- CPC_TTY_DBG("hdlcX-tty: no TTY to hangup\n");
- return ;
- }
-
- cpc_tty = (st_cpc_tty_area *) tty->driver_data;
-
- if ((cpc_tty->tty != tty) || (cpc_tty->state != CPC_TTY_ST_OPEN)) {
- CPC_TTY_DBG("%s: TTY is not opened\n",cpc_tty->name);
- return ;
- }
- if (!serial_drv.refcount && cpc_tty_unreg_flag) {
- cpc_tty_unreg_flag = 0;
- CPC_TTY_DBG("%s: unregister the tty driver\n", cpc_tty->name);
- if ((res=tty_unregister_driver(&serial_drv))) {
- CPC_TTY_DBG("%s: ERROR ->unregister the tty driver error=%d\n",
- cpc_tty->name,res);
- }
- }
- cpc_tty_signal_off(cpc_tty->pc300dev, CTL_DTR);
-}
-
-/*
- * PC300 TTY RX work routine
- * This routine treats RX work
- * o verify read buffer
- * o call the line disc. read
- * o free memory
- */
-static void cpc_tty_rx_work(struct work_struct *work)
-{
- st_cpc_tty_area *cpc_tty;
- unsigned long port;
- int i, j;
- volatile st_cpc_rx_buf *buf;
- char flags=0,flg_rx=1;
- struct tty_ldisc *ld;
-
- if (cpc_tty_cnt == 0) return;
-
- for (i=0; (i < 4) && flg_rx ; i++) {
- flg_rx = 0;
-
- cpc_tty = container_of(work, st_cpc_tty_area, tty_rx_work);
- port = cpc_tty - cpc_tty_area;
-
- for (j=0; j < CPC_TTY_NPORTS; j++) {
- cpc_tty = &cpc_tty_area[port];
-
- if ((buf=cpc_tty->buf_rx.first) != NULL) {
- if (cpc_tty->tty) {
- ld = tty_ldisc_ref(cpc_tty->tty);
- if (ld) {
- if (ld->ops->receive_buf) {
- CPC_TTY_DBG("%s: call line disc. receive_buf\n",cpc_tty->name);
- ld->ops->receive_buf(cpc_tty->tty, (char *)(buf->data), &flags, buf->size);
- }
- tty_ldisc_deref(ld);
- }
- }
- cpc_tty->buf_rx.first = cpc_tty->buf_rx.first->next;
- kfree((void *)buf);
- buf = cpc_tty->buf_rx.first;
- flg_rx = 1;
- }
- if (++port == CPC_TTY_NPORTS) port = 0;
- }
- }
-}
-
-/*
- * PC300 TTY RX work routine
- *
- * This routine treats RX interrupt.
- * o read all frames in card
- * o verify the frame size
- * o read the frame in rx buffer
- */
-static void cpc_tty_rx_disc_frame(pc300ch_t *pc300chan)
-{
- volatile pcsca_bd_t __iomem * ptdescr;
- volatile unsigned char status;
- pc300_t *card = (pc300_t *)pc300chan->card;
- int ch = pc300chan->channel;
-
- /* dma buf read */
- ptdescr = (pcsca_bd_t __iomem *)(card->hw.rambase +
- RX_BD_ADDR(ch, pc300chan->rx_first_bd));
- while (pc300chan->rx_first_bd != pc300chan->rx_last_bd) {
- status = cpc_readb(&ptdescr->status);
- cpc_writeb(&ptdescr->status, 0);
- cpc_writeb(&ptdescr->len, 0);
- pc300chan->rx_first_bd = (pc300chan->rx_first_bd + 1) &
- (N_DMA_RX_BUF - 1);
- if (status & DST_EOM) {
- break; /* end of message */
- }
- ptdescr = (pcsca_bd_t __iomem *)(card->hw.rambase + cpc_readl(&ptdescr->next));
- }
-}
-
-void cpc_tty_receive(pc300dev_t *pc300dev)
-{
- st_cpc_tty_area *cpc_tty;
- pc300ch_t *pc300chan = (pc300ch_t *)pc300dev->chan;
- pc300_t *card = (pc300_t *)pc300chan->card;
- int ch = pc300chan->channel;
- volatile pcsca_bd_t __iomem * ptdescr;
- struct net_device_stats *stats = &pc300dev->dev->stats;
- int rx_len, rx_aux;
- volatile unsigned char status;
- unsigned short first_bd = pc300chan->rx_first_bd;
- st_cpc_rx_buf *new = NULL;
- unsigned char dsr_rx;
-
- if (pc300dev->cpc_tty == NULL) {
- return;
- }
-
- dsr_rx = cpc_readb(card->hw.scabase + DSR_RX(ch));
-
- cpc_tty = pc300dev->cpc_tty;
-
- while (1) {
- rx_len = 0;
- ptdescr = (pcsca_bd_t __iomem *)(card->hw.rambase + RX_BD_ADDR(ch, first_bd));
- while ((status = cpc_readb(&ptdescr->status)) & DST_OSB) {
- rx_len += cpc_readw(&ptdescr->len);
- first_bd = (first_bd + 1) & (N_DMA_RX_BUF - 1);
- if (status & DST_EOM) {
- break;
- }
- ptdescr = (pcsca_bd_t __iomem *)(card->hw.rambase+cpc_readl(&ptdescr->next));
- }
-
- if (!rx_len) {
- if (dsr_rx & DSR_BOF) {
- /* update EDA */
- cpc_writel(card->hw.scabase + DRX_REG(EDAL, ch),
- RX_BD_ADDR(ch, pc300chan->rx_last_bd));
- }
- kfree(new);
- return;
- }
-
- if (rx_len > CPC_TTY_MAX_MTU) {
- /* Free RX descriptors */
- CPC_TTY_DBG("%s: frame size is invalid.\n",cpc_tty->name);
- stats->rx_errors++;
- stats->rx_frame_errors++;
- cpc_tty_rx_disc_frame(pc300chan);
- continue;
- }
-
- new = kmalloc(rx_len + sizeof(st_cpc_rx_buf), GFP_ATOMIC);
- if (!new) {
- cpc_tty_rx_disc_frame(pc300chan);
- continue;
- }
-
- /* dma buf read */
- ptdescr = (pcsca_bd_t __iomem *)(card->hw.rambase +
- RX_BD_ADDR(ch, pc300chan->rx_first_bd));
-
- rx_len = 0; /* counter frame size */
-
- while ((status = cpc_readb(&ptdescr->status)) & DST_OSB) {
- rx_aux = cpc_readw(&ptdescr->len);
- if ((status & (DST_OVR | DST_CRC | DST_RBIT | DST_SHRT | DST_ABT))
- || (rx_aux > BD_DEF_LEN)) {
- CPC_TTY_DBG("%s: reception error\n", cpc_tty->name);
- stats->rx_errors++;
- if (status & DST_OVR) {
- stats->rx_fifo_errors++;
- }
- if (status & DST_CRC) {
- stats->rx_crc_errors++;
- }
- if ((status & (DST_RBIT | DST_SHRT | DST_ABT)) ||
- (rx_aux > BD_DEF_LEN)) {
- stats->rx_frame_errors++;
- }
- /* discard remainig descriptors used by the bad frame */
- CPC_TTY_DBG("%s: reception error - discard descriptors",
- cpc_tty->name);
- cpc_tty_rx_disc_frame(pc300chan);
- rx_len = 0;
- kfree(new);
- new = NULL;
- break; /* read next frame - while(1) */
- }
-
- if (cpc_tty->state != CPC_TTY_ST_OPEN) {
- /* Free RX descriptors */
- cpc_tty_rx_disc_frame(pc300chan);
- stats->rx_dropped++;
- rx_len = 0;
- kfree(new);
- new = NULL;
- break; /* read next frame - while(1) */
- }
-
- /* read the segment of the frame */
- if (rx_aux != 0) {
- memcpy_fromio((new->data + rx_len),
- (void __iomem *)(card->hw.rambase +
- cpc_readl(&ptdescr->ptbuf)), rx_aux);
- rx_len += rx_aux;
- }
- cpc_writeb(&ptdescr->status,0);
- cpc_writeb(&ptdescr->len, 0);
- pc300chan->rx_first_bd = (pc300chan->rx_first_bd + 1) &
- (N_DMA_RX_BUF -1);
- if (status & DST_EOM)break;
-
- ptdescr = (pcsca_bd_t __iomem *) (card->hw.rambase +
- cpc_readl(&ptdescr->next));
- }
- /* update pointer */
- pc300chan->rx_last_bd = (pc300chan->rx_first_bd - 1) &
- (N_DMA_RX_BUF - 1) ;
- if (!(dsr_rx & DSR_BOF)) {
- /* update EDA */
- cpc_writel(card->hw.scabase + DRX_REG(EDAL, ch),
- RX_BD_ADDR(ch, pc300chan->rx_last_bd));
- }
- if (rx_len != 0) {
- stats->rx_bytes += rx_len;
-
- if (pc300dev->trace_on) {
- cpc_tty_trace(pc300dev, new->data,rx_len, 'R');
- }
- new->size = rx_len;
- new->next = NULL;
- if (cpc_tty->buf_rx.first == NULL) {
- cpc_tty->buf_rx.first = new;
- cpc_tty->buf_rx.last = new;
- } else {
- cpc_tty->buf_rx.last->next = new;
- cpc_tty->buf_rx.last = new;
- }
- schedule_work(&(cpc_tty->tty_rx_work));
- stats->rx_packets++;
- }
- }
-}
-
-/*
- * PC300 TTY TX work routine
- *
- * This routine treats TX interrupt.
- * o if need call line discipline wakeup
- * o call wake_up_interruptible
- */
-static void cpc_tty_tx_work(struct work_struct *work)
-{
- st_cpc_tty_area *cpc_tty =
- container_of(work, st_cpc_tty_area, tty_tx_work);
- struct tty_struct *tty;
-
- CPC_TTY_DBG("%s: cpc_tty_tx_work init\n",cpc_tty->name);
-
- if ((tty = cpc_tty->tty) == NULL) {
- CPC_TTY_DBG("%s: the interface is not opened\n",cpc_tty->name);
- return;
- }
- tty_wakeup(tty);
-}
-
-/*
- * PC300 TTY send to card routine
- *
- * This routine send data to card.
- * o clear descriptors
- * o write data to DMA buffers
- * o start the transmission
- */
-static int cpc_tty_send_to_card(pc300dev_t *dev,void* buf, int len)
-{
- pc300ch_t *chan = (pc300ch_t *)dev->chan;
- pc300_t *card = (pc300_t *)chan->card;
- int ch = chan->channel;
- struct net_device_stats *stats = &dev->dev->stats;
- unsigned long flags;
- volatile pcsca_bd_t __iomem *ptdescr;
- int i, nchar;
- int tosend = len;
- int nbuf = ((len - 1)/BD_DEF_LEN) + 1;
- unsigned char *pdata=buf;
-
- CPC_TTY_DBG("%s:cpc_tty_send_to_cars len=%i",
- (st_cpc_tty_area *)dev->cpc_tty->name,len);
-
- if (nbuf >= card->chan[ch].nfree_tx_bd) {
- return 1;
- }
-
- /* write buffer to DMA buffers */
- CPC_TTY_DBG("%s: call dma_buf_write\n",
- (st_cpc_tty_area *)dev->cpc_tty->name);
- for (i = 0 ; i < nbuf ; i++) {
- ptdescr = (pcsca_bd_t __iomem *)(card->hw.rambase +
- TX_BD_ADDR(ch, card->chan[ch].tx_next_bd));
- nchar = (BD_DEF_LEN > tosend) ? tosend : BD_DEF_LEN;
- if (cpc_readb(&ptdescr->status) & DST_OSB) {
- memcpy_toio((void __iomem *)(card->hw.rambase +
- cpc_readl(&ptdescr->ptbuf)),
- &pdata[len - tosend],
- nchar);
- card->chan[ch].nfree_tx_bd--;
- if ((i + 1) == nbuf) {
- /* This must be the last BD to be used */
- cpc_writeb(&ptdescr->status, DST_EOM);
- } else {
- cpc_writeb(&ptdescr->status, 0);
- }
- cpc_writew(&ptdescr->len, nchar);
- } else {
- CPC_TTY_DBG("%s: error in dma_buf_write\n",
- (st_cpc_tty_area *)dev->cpc_tty->name);
- stats->tx_dropped++;
- return 1;
- }
- tosend -= nchar;
- card->chan[ch].tx_next_bd =
- (card->chan[ch].tx_next_bd + 1) & (N_DMA_TX_BUF - 1);
- }
-
- if (dev->trace_on) {
- cpc_tty_trace(dev, buf, len,'T');
- }
-
- /* start transmission */
- CPC_TTY_DBG("%s: start transmission\n",
- (st_cpc_tty_area *)dev->cpc_tty->name);
-
- CPC_TTY_LOCK(card, flags);
- cpc_writeb(card->hw.scabase + DTX_REG(EDAL, ch),
- TX_BD_ADDR(ch, chan->tx_next_bd));
- cpc_writeb(card->hw.scabase + M_REG(CMD, ch), CMD_TX_ENA);
- cpc_writeb(card->hw.scabase + DSR_TX(ch), DSR_DE);
-
- if (card->hw.type == PC300_TE) {
- cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
- cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) |
- (CPLD_REG2_FALC_LED1 << (2 * ch)));
- }
- CPC_TTY_UNLOCK(card, flags);
- return 0;
-}
-
-/*
- * PC300 TTY trace routine
- *
- * This routine send trace of connection to application.
- * o clear descriptors
- * o write data to DMA buffers
- * o start the transmission
- */
-
-static void cpc_tty_trace(pc300dev_t *dev, char* buf, int len, char rxtx)
-{
- struct sk_buff *skb;
-
- if ((skb = dev_alloc_skb(10 + len)) == NULL) {
- /* out of memory */
- CPC_TTY_DBG("%s: tty_trace - out of memory\n", dev->dev->name);
- return;
- }
-
- skb_put (skb, 10 + len);
- skb->dev = dev->dev;
- skb->protocol = htons(ETH_P_CUST);
- skb_reset_mac_header(skb);
- skb->pkt_type = PACKET_HOST;
- skb->len = 10 + len;
-
- skb_copy_to_linear_data(skb, dev->dev->name, 5);
- skb->data[5] = '[';
- skb->data[6] = rxtx;
- skb->data[7] = ']';
- skb->data[8] = ':';
- skb->data[9] = ' ';
- skb_copy_to_linear_data_offset(skb, 10, buf, len);
- netif_rx(skb);
-}
-
-/*
- * PC300 TTY unregister service routine
- *
- * This routine unregister one interface.
- */
-void cpc_tty_unregister_service(pc300dev_t *pc300dev)
-{
- st_cpc_tty_area *cpc_tty;
- ulong flags;
- int res;
-
- if ((cpc_tty= (st_cpc_tty_area *) pc300dev->cpc_tty) == NULL) {
- CPC_TTY_DBG("%s: interface is not TTY\n", pc300dev->dev->name);
- return;
- }
- CPC_TTY_DBG("%s: cpc_tty_unregister_service", cpc_tty->name);
-
- if (cpc_tty->pc300dev != pc300dev) {
- CPC_TTY_DBG("%s: invalid tty ptr=%s\n",
- pc300dev->dev->name, cpc_tty->name);
- return;
- }
-
- if (--cpc_tty_cnt == 0) {
- if (serial_drv.refcount) {
- CPC_TTY_DBG("%s: unregister is not possible, refcount=%d",
- cpc_tty->name, serial_drv.refcount);
- cpc_tty_cnt++;
- cpc_tty_unreg_flag = 1;
- return;
- } else {
- CPC_TTY_DBG("%s: unregister the tty driver\n", cpc_tty->name);
- if ((res=tty_unregister_driver(&serial_drv))) {
- CPC_TTY_DBG("%s: ERROR ->unregister the tty driver error=%d\n",
- cpc_tty->name,res);
- }
- }
- }
- CPC_TTY_LOCK(pc300dev->chan->card,flags);
- cpc_tty->tty = NULL;
- CPC_TTY_UNLOCK(pc300dev->chan->card, flags);
- cpc_tty->tty_minor = 0;
- cpc_tty->state = CPC_TTY_ST_IDLE;
-}
-
-/*
- * PC300 TTY trigger poll routine
- * This routine is called by pc300driver to treats Tx interrupt.
- */
-void cpc_tty_trigger_poll(pc300dev_t *pc300dev)
-{
- st_cpc_tty_area *cpc_tty = (st_cpc_tty_area *)pc300dev->cpc_tty;
- if (!cpc_tty) {
- return;
- }
- schedule_work(&(cpc_tty->tty_tx_work));
-}
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff