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path: root/drivers/ieee1394/pcilynx.c
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Diffstat (limited to 'drivers/ieee1394/pcilynx.c')
-rw-r--r--drivers/ieee1394/pcilynx.c1554
1 files changed, 0 insertions, 1554 deletions
diff --git a/drivers/ieee1394/pcilynx.c b/drivers/ieee1394/pcilynx.c
deleted file mode 100644
index bf47fee7980..00000000000
--- a/drivers/ieee1394/pcilynx.c
+++ /dev/null
@@ -1,1554 +0,0 @@
-/*
- * pcilynx.c - Texas Instruments PCILynx driver
- * Copyright (C) 1999,2000 Andreas Bombe <andreas.bombe@munich.netsurf.de>,
- * Stephan Linz <linz@mazet.de>
- * Manfred Weihs <weihs@ict.tuwien.ac.at>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-/*
- * Contributions:
- *
- * Manfred Weihs <weihs@ict.tuwien.ac.at>
- * reading bus info block (containing GUID) from serial
- * eeprom via i2c and storing it in config ROM
- * Reworked code for initiating bus resets
- * (long, short, with or without hold-off)
- * Enhancements in async and iso send code
- */
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/wait.h>
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/fs.h>
-#include <linux/poll.h>
-#include <linux/kdev_t.h>
-#include <linux/dma-mapping.h>
-#include <asm/byteorder.h>
-#include <asm/atomic.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/irq.h>
-
-#include "csr1212.h"
-#include "ieee1394.h"
-#include "ieee1394_types.h"
-#include "hosts.h"
-#include "ieee1394_core.h"
-#include "highlevel.h"
-#include "pcilynx.h"
-
-#include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
-
-/* print general (card independent) information */
-#define PRINT_G(level, fmt, args...) printk(level "pcilynx: " fmt "\n" , ## args)
-/* print card specific information */
-#define PRINT(level, card, fmt, args...) printk(level "pcilynx%d: " fmt "\n" , card , ## args)
-
-#ifdef CONFIG_IEEE1394_VERBOSEDEBUG
-#define PRINT_GD(level, fmt, args...) printk(level "pcilynx: " fmt "\n" , ## args)
-#define PRINTD(level, card, fmt, args...) printk(level "pcilynx%d: " fmt "\n" , card , ## args)
-#else
-#define PRINT_GD(level, fmt, args...) do {} while (0)
-#define PRINTD(level, card, fmt, args...) do {} while (0)
-#endif
-
-
-/* Module Parameters */
-static int skip_eeprom;
-module_param(skip_eeprom, int, 0444);
-MODULE_PARM_DESC(skip_eeprom, "Use generic bus info block instead of serial eeprom (default = 0).");
-
-
-static struct hpsb_host_driver lynx_driver;
-static unsigned int card_id;
-
-
-
-/*
- * I2C stuff
- */
-
-/* the i2c stuff was inspired by i2c-philips-par.c */
-
-static void bit_setscl(void *data, int state)
-{
- if (state) {
- ((struct ti_lynx *) data)->i2c_driven_state |= 0x00000040;
- } else {
- ((struct ti_lynx *) data)->i2c_driven_state &= ~0x00000040;
- }
- reg_write((struct ti_lynx *) data, SERIAL_EEPROM_CONTROL, ((struct ti_lynx *) data)->i2c_driven_state);
-}
-
-static void bit_setsda(void *data, int state)
-{
- if (state) {
- ((struct ti_lynx *) data)->i2c_driven_state |= 0x00000010;
- } else {
- ((struct ti_lynx *) data)->i2c_driven_state &= ~0x00000010;
- }
- reg_write((struct ti_lynx *) data, SERIAL_EEPROM_CONTROL, ((struct ti_lynx *) data)->i2c_driven_state);
-}
-
-static int bit_getscl(void *data)
-{
- return reg_read((struct ti_lynx *) data, SERIAL_EEPROM_CONTROL) & 0x00000040;
-}
-
-static int bit_getsda(void *data)
-{
- return reg_read((struct ti_lynx *) data, SERIAL_EEPROM_CONTROL) & 0x00000010;
-}
-
-static struct i2c_algo_bit_data bit_data = {
- .setsda = bit_setsda,
- .setscl = bit_setscl,
- .getsda = bit_getsda,
- .getscl = bit_getscl,
- .udelay = 5,
- .timeout = 100,
-};
-
-
-/*
- * PCL handling functions.
- */
-
-static pcl_t alloc_pcl(struct ti_lynx *lynx)
-{
- u8 m;
- int i, j;
-
- spin_lock(&lynx->lock);
- /* FIXME - use ffz() to make this readable */
- for (i = 0; i < (LOCALRAM_SIZE / 1024); i++) {
- m = lynx->pcl_bmap[i];
- for (j = 0; j < 8; j++) {
- if (m & 1<<j) {
- continue;
- }
- m |= 1<<j;
- lynx->pcl_bmap[i] = m;
- spin_unlock(&lynx->lock);
- return 8 * i + j;
- }
- }
- spin_unlock(&lynx->lock);
-
- return -1;
-}
-
-
-#if 0
-static void free_pcl(struct ti_lynx *lynx, pcl_t pclid)
-{
- int off, bit;
-
- off = pclid / 8;
- bit = pclid % 8;
-
- if (pclid < 0) {
- return;
- }
-
- spin_lock(&lynx->lock);
- if (lynx->pcl_bmap[off] & 1<<bit) {
- lynx->pcl_bmap[off] &= ~(1<<bit);
- } else {
- PRINT(KERN_ERR, lynx->id,
- "attempted to free unallocated PCL %d", pclid);
- }
- spin_unlock(&lynx->lock);
-}
-
-/* functions useful for debugging */
-static void pretty_print_pcl(const struct ti_pcl *pcl)
-{
- int i;
-
- printk("PCL next %08x, userdata %08x, status %08x, remtrans %08x, nextbuf %08x\n",
- pcl->next, pcl->user_data, pcl->pcl_status,
- pcl->remaining_transfer_count, pcl->next_data_buffer);
-
- printk("PCL");
- for (i=0; i<13; i++) {
- printk(" c%x:%08x d%x:%08x",
- i, pcl->buffer[i].control, i, pcl->buffer[i].pointer);
- if (!(i & 0x3) && (i != 12)) printk("\nPCL");
- }
- printk("\n");
-}
-
-static void print_pcl(const struct ti_lynx *lynx, pcl_t pclid)
-{
- struct ti_pcl pcl;
-
- get_pcl(lynx, pclid, &pcl);
- pretty_print_pcl(&pcl);
-}
-#endif
-
-
-
-/***********************************
- * IEEE-1394 functionality section *
- ***********************************/
-
-
-static int get_phy_reg(struct ti_lynx *lynx, int addr)
-{
- int retval;
- int i = 0;
-
- unsigned long flags;
-
- if (addr > 15) {
- PRINT(KERN_ERR, lynx->id,
- "%s: PHY register address %d out of range",
- __func__, addr);
- return -1;
- }
-
- spin_lock_irqsave(&lynx->phy_reg_lock, flags);
-
- reg_write(lynx, LINK_PHY, LINK_PHY_READ | LINK_PHY_ADDR(addr));
- do {
- retval = reg_read(lynx, LINK_PHY);
-
- if (i > 10000) {
- PRINT(KERN_ERR, lynx->id, "%s: runaway loop, aborting",
- __func__);
- retval = -1;
- break;
- }
- i++;
- } while ((retval & 0xf00) != LINK_PHY_RADDR(addr));
-
- reg_write(lynx, LINK_INT_STATUS, LINK_INT_PHY_REG_RCVD);
- spin_unlock_irqrestore(&lynx->phy_reg_lock, flags);
-
- if (retval != -1) {
- return retval & 0xff;
- } else {
- return -1;
- }
-}
-
-static int set_phy_reg(struct ti_lynx *lynx, int addr, int val)
-{
- unsigned long flags;
-
- if (addr > 15) {
- PRINT(KERN_ERR, lynx->id,
- "%s: PHY register address %d out of range", __func__, addr);
- return -1;
- }
-
- if (val > 0xff) {
- PRINT(KERN_ERR, lynx->id,
- "%s: PHY register value %d out of range", __func__, val);
- return -1;
- }
-
- spin_lock_irqsave(&lynx->phy_reg_lock, flags);
-
- reg_write(lynx, LINK_PHY, LINK_PHY_WRITE | LINK_PHY_ADDR(addr)
- | LINK_PHY_WDATA(val));
-
- spin_unlock_irqrestore(&lynx->phy_reg_lock, flags);
-
- return 0;
-}
-
-static int sel_phy_reg_page(struct ti_lynx *lynx, int page)
-{
- int reg;
-
- if (page > 7) {
- PRINT(KERN_ERR, lynx->id,
- "%s: PHY page %d out of range", __func__, page);
- return -1;
- }
-
- reg = get_phy_reg(lynx, 7);
- if (reg != -1) {
- reg &= 0x1f;
- reg |= (page << 5);
- set_phy_reg(lynx, 7, reg);
- return 0;
- } else {
- return -1;
- }
-}
-
-#if 0 /* not needed at this time */
-static int sel_phy_reg_port(struct ti_lynx *lynx, int port)
-{
- int reg;
-
- if (port > 15) {
- PRINT(KERN_ERR, lynx->id,
- "%s: PHY port %d out of range", __func__, port);
- return -1;
- }
-
- reg = get_phy_reg(lynx, 7);
- if (reg != -1) {
- reg &= 0xf0;
- reg |= port;
- set_phy_reg(lynx, 7, reg);
- return 0;
- } else {
- return -1;
- }
-}
-#endif
-
-static u32 get_phy_vendorid(struct ti_lynx *lynx)
-{
- u32 pvid = 0;
- sel_phy_reg_page(lynx, 1);
- pvid |= (get_phy_reg(lynx, 10) << 16);
- pvid |= (get_phy_reg(lynx, 11) << 8);
- pvid |= get_phy_reg(lynx, 12);
- PRINT(KERN_INFO, lynx->id, "PHY vendor id 0x%06x", pvid);
- return pvid;
-}
-
-static u32 get_phy_productid(struct ti_lynx *lynx)
-{
- u32 id = 0;
- sel_phy_reg_page(lynx, 1);
- id |= (get_phy_reg(lynx, 13) << 16);
- id |= (get_phy_reg(lynx, 14) << 8);
- id |= get_phy_reg(lynx, 15);
- PRINT(KERN_INFO, lynx->id, "PHY product id 0x%06x", id);
- return id;
-}
-
-static quadlet_t generate_own_selfid(struct ti_lynx *lynx,
- struct hpsb_host *host)
-{
- quadlet_t lsid;
- char phyreg[7];
- int i;
-
- phyreg[0] = lynx->phy_reg0;
- for (i = 1; i < 7; i++) {
- phyreg[i] = get_phy_reg(lynx, i);
- }
-
- /* FIXME? We assume a TSB21LV03A phy here. This code doesn't support
- more than 3 ports on the PHY anyway. */
-
- lsid = 0x80400000 | ((phyreg[0] & 0xfc) << 22);
- lsid |= (phyreg[1] & 0x3f) << 16; /* gap count */
- lsid |= (phyreg[2] & 0xc0) << 8; /* max speed */
- if (!hpsb_disable_irm)
- lsid |= (phyreg[6] & 0x01) << 11; /* contender (phy dependent) */
- /* lsid |= 1 << 11; *//* set contender (hack) */
- lsid |= (phyreg[6] & 0x10) >> 3; /* initiated reset */
-
- for (i = 0; i < (phyreg[2] & 0xf); i++) { /* ports */
- if (phyreg[3 + i] & 0x4) {
- lsid |= (((phyreg[3 + i] & 0x8) | 0x10) >> 3)
- << (6 - i*2);
- } else {
- lsid |= 1 << (6 - i*2);
- }
- }
-
- cpu_to_be32s(&lsid);
- PRINT(KERN_DEBUG, lynx->id, "generated own selfid 0x%x", lsid);
- return lsid;
-}
-
-static void handle_selfid(struct ti_lynx *lynx, struct hpsb_host *host)
-{
- quadlet_t *q = lynx->rcv_page;
- int phyid, isroot, size;
- quadlet_t lsid = 0;
- int i;
-
- if (lynx->phy_reg0 == -1 || lynx->selfid_size == -1) return;
-
- size = lynx->selfid_size;
- phyid = lynx->phy_reg0;
-
- i = (size > 16 ? 16 : size) / 4 - 1;
- while (i >= 0) {
- cpu_to_be32s(&q[i]);
- i--;
- }
-
- if (!lynx->phyic.reg_1394a) {
- lsid = generate_own_selfid(lynx, host);
- }
-
- isroot = (phyid & 2) != 0;
- phyid >>= 2;
- PRINT(KERN_INFO, lynx->id, "SelfID process finished (phyid %d, %s)",
- phyid, (isroot ? "root" : "not root"));
- reg_write(lynx, LINK_ID, (0xffc0 | phyid) << 16);
-
- if (!lynx->phyic.reg_1394a && !size) {
- hpsb_selfid_received(host, lsid);
- }
-
- while (size > 0) {
- struct selfid *sid = (struct selfid *)q;
-
- if (!lynx->phyic.reg_1394a && !sid->extended
- && (sid->phy_id == (phyid + 1))) {
- hpsb_selfid_received(host, lsid);
- }
-
- if (q[0] == ~q[1]) {
- PRINT(KERN_DEBUG, lynx->id, "SelfID packet 0x%x rcvd",
- q[0]);
- hpsb_selfid_received(host, q[0]);
- } else {
- PRINT(KERN_INFO, lynx->id,
- "inconsistent selfid 0x%x/0x%x", q[0], q[1]);
- }
- q += 2;
- size -= 8;
- }
-
- if (!lynx->phyic.reg_1394a && isroot && phyid != 0) {
- hpsb_selfid_received(host, lsid);
- }
-
- hpsb_selfid_complete(host, phyid, isroot);
-
- if (host->in_bus_reset) return; /* in bus reset again */
-
- if (isroot) reg_set_bits(lynx, LINK_CONTROL, LINK_CONTROL_CYCMASTER); //FIXME: I do not think, we need this here
- reg_set_bits(lynx, LINK_CONTROL,
- LINK_CONTROL_RCV_CMP_VALID | LINK_CONTROL_TX_ASYNC_EN
- | LINK_CONTROL_RX_ASYNC_EN | LINK_CONTROL_CYCTIMEREN);
-}
-
-
-
-/* This must be called with the respective queue_lock held. */
-static void send_next(struct ti_lynx *lynx, int what)
-{
- struct ti_pcl pcl;
- struct lynx_send_data *d;
- struct hpsb_packet *packet;
-
-#if 0 /* has been removed from ieee1394 core */
- d = (what == hpsb_iso ? &lynx->iso_send : &lynx->async);
-#else
- d = &lynx->async;
-#endif
- if (!list_empty(&d->pcl_queue)) {
- PRINT(KERN_ERR, lynx->id, "trying to queue a new packet in nonempty fifo");
- BUG();
- }
-
- packet = driver_packet(d->queue.next);
- list_move_tail(&packet->driver_list, &d->pcl_queue);
-
- d->header_dma = pci_map_single(lynx->dev, packet->header,
- packet->header_size, PCI_DMA_TODEVICE);
- if (packet->data_size) {
- d->data_dma = pci_map_single(lynx->dev, packet->data,
- packet->data_size,
- PCI_DMA_TODEVICE);
- } else {
- d->data_dma = 0;
- }
-
- pcl.next = PCL_NEXT_INVALID;
- pcl.async_error_next = PCL_NEXT_INVALID;
- pcl.pcl_status = 0;
- pcl.buffer[0].control = packet->speed_code << 14 | packet->header_size;
-#ifndef __BIG_ENDIAN
- pcl.buffer[0].control |= PCL_BIGENDIAN;
-#endif
- pcl.buffer[0].pointer = d->header_dma;
- pcl.buffer[1].control = PCL_LAST_BUFF | packet->data_size;
- pcl.buffer[1].pointer = d->data_dma;
-
- switch (packet->type) {
- case hpsb_async:
- pcl.buffer[0].control |= PCL_CMD_XMT;
- break;
-#if 0 /* has been removed from ieee1394 core */
- case hpsb_iso:
- pcl.buffer[0].control |= PCL_CMD_XMT | PCL_ISOMODE;
- break;
-#endif
- case hpsb_raw:
- pcl.buffer[0].control |= PCL_CMD_UNFXMT;
- break;
- }
-
- put_pcl(lynx, d->pcl, &pcl);
- run_pcl(lynx, d->pcl_start, d->channel);
-}
-
-
-/* called from subsystem core */
-static int lynx_transmit(struct hpsb_host *host, struct hpsb_packet *packet)
-{
- struct ti_lynx *lynx = host->hostdata;
- struct lynx_send_data *d;
- unsigned long flags;
-
- if (packet->data_size >= 4096) {
- PRINT(KERN_ERR, lynx->id, "transmit packet data too big (%Zd)",
- packet->data_size);
- return -EOVERFLOW;
- }
-
- switch (packet->type) {
- case hpsb_async:
- case hpsb_raw:
- d = &lynx->async;
- break;
-#if 0 /* has been removed from ieee1394 core */
- case hpsb_iso:
- d = &lynx->iso_send;
- break;
-#endif
- default:
- PRINT(KERN_ERR, lynx->id, "invalid packet type %d",
- packet->type);
- return -EINVAL;
- }
-
- if (packet->tcode == TCODE_WRITEQ
- || packet->tcode == TCODE_READQ_RESPONSE) {
- cpu_to_be32s(&packet->header[3]);
- }
-
- spin_lock_irqsave(&d->queue_lock, flags);
-
- list_add_tail(&packet->driver_list, &d->queue);
- if (list_empty(&d->pcl_queue))
- send_next(lynx, packet->type);
-
- spin_unlock_irqrestore(&d->queue_lock, flags);
-
- return 0;
-}
-
-
-/* called from subsystem core */
-static int lynx_devctl(struct hpsb_host *host, enum devctl_cmd cmd, int arg)
-{
- struct ti_lynx *lynx = host->hostdata;
- int retval = 0;
- struct hpsb_packet *packet;
- LIST_HEAD(packet_list);
- unsigned long flags;
- int phy_reg;
-
- switch (cmd) {
- case RESET_BUS:
- if (reg_read(lynx, LINK_INT_STATUS) & LINK_INT_PHY_BUSRESET) {
- retval = 0;
- break;
- }
-
- switch (arg) {
- case SHORT_RESET:
- if (lynx->phyic.reg_1394a) {
- phy_reg = get_phy_reg(lynx, 5);
- if (phy_reg == -1) {
- PRINT(KERN_ERR, lynx->id, "cannot reset bus, because read phy reg failed");
- retval = -1;
- break;
- }
- phy_reg |= 0x40;
-
- PRINT(KERN_INFO, lynx->id, "resetting bus (short bus reset) on request");
-
- lynx->selfid_size = -1;
- lynx->phy_reg0 = -1;
- set_phy_reg(lynx, 5, phy_reg); /* set ISBR */
- break;
- } else {
- PRINT(KERN_INFO, lynx->id, "cannot do short bus reset, because of old phy");
- /* fall through to long bus reset */
- }
- case LONG_RESET:
- phy_reg = get_phy_reg(lynx, 1);
- if (phy_reg == -1) {
- PRINT(KERN_ERR, lynx->id, "cannot reset bus, because read phy reg failed");
- retval = -1;
- break;
- }
- phy_reg |= 0x40;
-
- PRINT(KERN_INFO, lynx->id, "resetting bus (long bus reset) on request");
-
- lynx->selfid_size = -1;
- lynx->phy_reg0 = -1;
- set_phy_reg(lynx, 1, phy_reg); /* clear RHB, set IBR */
- break;
- case SHORT_RESET_NO_FORCE_ROOT:
- if (lynx->phyic.reg_1394a) {
- phy_reg = get_phy_reg(lynx, 1);
- if (phy_reg == -1) {
- PRINT(KERN_ERR, lynx->id, "cannot reset bus, because read phy reg failed");
- retval = -1;
- break;
- }
- if (phy_reg & 0x80) {
- phy_reg &= ~0x80;
- set_phy_reg(lynx, 1, phy_reg); /* clear RHB */
- }
-
- phy_reg = get_phy_reg(lynx, 5);
- if (phy_reg == -1) {
- PRINT(KERN_ERR, lynx->id, "cannot reset bus, because read phy reg failed");
- retval = -1;
- break;
- }
- phy_reg |= 0x40;
-
- PRINT(KERN_INFO, lynx->id, "resetting bus (short bus reset, no force_root) on request");
-
- lynx->selfid_size = -1;
- lynx->phy_reg0 = -1;
- set_phy_reg(lynx, 5, phy_reg); /* set ISBR */
- break;
- } else {
- PRINT(KERN_INFO, lynx->id, "cannot do short bus reset, because of old phy");
- /* fall through to long bus reset */
- }
- case LONG_RESET_NO_FORCE_ROOT:
- phy_reg = get_phy_reg(lynx, 1);
- if (phy_reg == -1) {
- PRINT(KERN_ERR, lynx->id, "cannot reset bus, because read phy reg failed");
- retval = -1;
- break;
- }
- phy_reg &= ~0x80;
- phy_reg |= 0x40;
-
- PRINT(KERN_INFO, lynx->id, "resetting bus (long bus reset, no force_root) on request");
-
- lynx->selfid_size = -1;
- lynx->phy_reg0 = -1;
- set_phy_reg(lynx, 1, phy_reg); /* clear RHB, set IBR */
- break;
- case SHORT_RESET_FORCE_ROOT:
- if (lynx->phyic.reg_1394a) {
- phy_reg = get_phy_reg(lynx, 1);
- if (phy_reg == -1) {
- PRINT(KERN_ERR, lynx->id, "cannot reset bus, because read phy reg failed");
- retval = -1;
- break;
- }
- if (!(phy_reg & 0x80)) {
- phy_reg |= 0x80;
- set_phy_reg(lynx, 1, phy_reg); /* set RHB */
- }
-
- phy_reg = get_phy_reg(lynx, 5);
- if (phy_reg == -1) {
- PRINT(KERN_ERR, lynx->id, "cannot reset bus, because read phy reg failed");
- retval = -1;
- break;
- }
- phy_reg |= 0x40;
-
- PRINT(KERN_INFO, lynx->id, "resetting bus (short bus reset, force_root set) on request");
-
- lynx->selfid_size = -1;
- lynx->phy_reg0 = -1;
- set_phy_reg(lynx, 5, phy_reg); /* set ISBR */
- break;
- } else {
- PRINT(KERN_INFO, lynx->id, "cannot do short bus reset, because of old phy");
- /* fall through to long bus reset */
- }
- case LONG_RESET_FORCE_ROOT:
- phy_reg = get_phy_reg(lynx, 1);
- if (phy_reg == -1) {
- PRINT(KERN_ERR, lynx->id, "cannot reset bus, because read phy reg failed");
- retval = -1;
- break;
- }
- phy_reg |= 0xc0;
-
- PRINT(KERN_INFO, lynx->id, "resetting bus (long bus reset, force_root set) on request");
-
- lynx->selfid_size = -1;
- lynx->phy_reg0 = -1;
- set_phy_reg(lynx, 1, phy_reg); /* set IBR and RHB */
- break;
- default:
- PRINT(KERN_ERR, lynx->id, "unknown argument for reset_bus command %d", arg);
- retval = -1;
- }
-
- break;
-
- case GET_CYCLE_COUNTER:
- retval = reg_read(lynx, CYCLE_TIMER);
- break;
-
- case SET_CYCLE_COUNTER:
- reg_write(lynx, CYCLE_TIMER, arg);
- break;
-
- case SET_BUS_ID:
- reg_write(lynx, LINK_ID,
- (arg << 22) | (reg_read(lynx, LINK_ID) & 0x003f0000));
- break;
-
- case ACT_CYCLE_MASTER:
- if (arg) {
- reg_set_bits(lynx, LINK_CONTROL,
- LINK_CONTROL_CYCMASTER);
- } else {
- reg_clear_bits(lynx, LINK_CONTROL,
- LINK_CONTROL_CYCMASTER);
- }
- break;
-
- case CANCEL_REQUESTS:
- spin_lock_irqsave(&lynx->async.queue_lock, flags);
-
- reg_write(lynx, DMA_CHAN_CTRL(CHANNEL_ASYNC_SEND), 0);
- list_splice_init(&lynx->async.queue, &packet_list);
-
- if (list_empty(&lynx->async.pcl_queue)) {
- spin_unlock_irqrestore(&lynx->async.queue_lock, flags);
- PRINTD(KERN_DEBUG, lynx->id, "no async packet in PCL to cancel");
- } else {
- struct ti_pcl pcl;
- u32 ack;
-
- PRINT(KERN_INFO, lynx->id, "cancelling async packet, that was already in PCL");
-
- get_pcl(lynx, lynx->async.pcl, &pcl);
-
- packet = driver_packet(lynx->async.pcl_queue.next);
- list_del_init(&packet->driver_list);
-
- pci_unmap_single(lynx->dev, lynx->async.header_dma,
- packet->header_size, PCI_DMA_TODEVICE);
- if (packet->data_size) {
- pci_unmap_single(lynx->dev, lynx->async.data_dma,
- packet->data_size, PCI_DMA_TODEVICE);
- }
-
- spin_unlock_irqrestore(&lynx->async.queue_lock, flags);
-
- if (pcl.pcl_status & DMA_CHAN_STAT_PKTCMPL) {
- if (pcl.pcl_status & DMA_CHAN_STAT_SPECIALACK) {
- ack = (pcl.pcl_status >> 15) & 0xf;
- PRINTD(KERN_INFO, lynx->id, "special ack %d", ack);
- ack = (ack == 1 ? ACKX_TIMEOUT : ACKX_SEND_ERROR);
- } else {
- ack = (pcl.pcl_status >> 15) & 0xf;
- }
- } else {
- PRINT(KERN_INFO, lynx->id, "async packet was not completed");
- ack = ACKX_ABORTED;
- }
- hpsb_packet_sent(host, packet, ack);
- }
-
- while (!list_empty(&packet_list)) {
- packet = driver_packet(packet_list.next);
- list_del_init(&packet->driver_list);
- hpsb_packet_sent(host, packet, ACKX_ABORTED);
- }
-
- break;
-#if 0 /* has been removed from ieee1394 core */
- case ISO_LISTEN_CHANNEL:
- spin_lock_irqsave(&lynx->iso_rcv.lock, flags);
-
- if (lynx->iso_rcv.chan_count++ == 0) {
- reg_write(lynx, DMA_WORD1_CMP_ENABLE(CHANNEL_ISO_RCV),
- DMA_WORD1_CMP_ENABLE_MASTER);
- }
-
- spin_unlock_irqrestore(&lynx->iso_rcv.lock, flags);
- break;
-
- case ISO_UNLISTEN_CHANNEL:
- spin_lock_irqsave(&lynx->iso_rcv.lock, flags);
-
- if (--lynx->iso_rcv.chan_count == 0) {
- reg_write(lynx, DMA_WORD1_CMP_ENABLE(CHANNEL_ISO_RCV),
- 0);
- }
-
- spin_unlock_irqrestore(&lynx->iso_rcv.lock, flags);
- break;
-#endif
- default:
- PRINT(KERN_ERR, lynx->id, "unknown devctl command %d", cmd);
- retval = -1;
- }
-
- return retval;
-}
-
-
-/***************************************
- * IEEE-1394 functionality section END *
- ***************************************/
-
-
-/********************************************************
- * Global stuff (interrupt handler, init/shutdown code) *
- ********************************************************/
-
-
-static irqreturn_t lynx_irq_handler(int irq, void *dev_id)
-{
- struct ti_lynx *lynx = (struct ti_lynx *)dev_id;
- struct hpsb_host *host = lynx->host;
- u32 intmask;
- u32 linkint;
-
- linkint = reg_read(lynx, LINK_INT_STATUS);
- intmask = reg_read(lynx, PCI_INT_STATUS);
-
- if (!(intmask & PCI_INT_INT_PEND))
- return IRQ_NONE;
-
- PRINTD(KERN_DEBUG, lynx->id, "interrupt: 0x%08x / 0x%08x", intmask,
- linkint);
-
- reg_write(lynx, LINK_INT_STATUS, linkint);
- reg_write(lynx, PCI_INT_STATUS, intmask);
-
- if (intmask & PCI_INT_1394) {
- if (linkint & LINK_INT_PHY_TIMEOUT) {
- PRINT(KERN_INFO, lynx->id, "PHY timeout occurred");
- }
- if (linkint & LINK_INT_PHY_BUSRESET) {
- PRINT(KERN_INFO, lynx->id, "bus reset interrupt");
- lynx->selfid_size = -1;
- lynx->phy_reg0 = -1;
- if (!host->in_bus_reset)
- hpsb_bus_reset(host);
- }
- if (linkint & LINK_INT_PHY_REG_RCVD) {
- u32 reg;
-
- spin_lock(&lynx->phy_reg_lock);
- reg = reg_read(lynx, LINK_PHY);
- spin_unlock(&lynx->phy_reg_lock);
-
- if (!host->in_bus_reset) {
- PRINT(KERN_INFO, lynx->id,
- "phy reg received without reset");
- } else if (reg & 0xf00) {
- PRINT(KERN_INFO, lynx->id,
- "unsolicited phy reg %d received",
- (reg >> 8) & 0xf);
- } else {
- lynx->phy_reg0 = reg & 0xff;
- handle_selfid(lynx, host);
- }
- }
- if (linkint & LINK_INT_ISO_STUCK) {
- PRINT(KERN_INFO, lynx->id, "isochronous transmitter stuck");
- }
- if (linkint & LINK_INT_ASYNC_STUCK) {
- PRINT(KERN_INFO, lynx->id, "asynchronous transmitter stuck");
- }
- if (linkint & LINK_INT_SENT_REJECT) {
- PRINT(KERN_INFO, lynx->id, "sent reject");
- }
- if (linkint & LINK_INT_TX_INVALID_TC) {
- PRINT(KERN_INFO, lynx->id, "invalid transaction code");
- }
- if (linkint & LINK_INT_GRF_OVERFLOW) {
- /* flush FIFO if overflow happens during reset */
- if (host->in_bus_reset)
- reg_write(lynx, FIFO_CONTROL,
- FIFO_CONTROL_GRF_FLUSH);
- PRINT(KERN_INFO, lynx->id, "GRF overflow");
- }
- if (linkint & LINK_INT_ITF_UNDERFLOW) {
- PRINT(KERN_INFO, lynx->id, "ITF underflow");
- }
- if (linkint & LINK_INT_ATF_UNDERFLOW) {
- PRINT(KERN_INFO, lynx->id, "ATF underflow");
- }
- }
-
- if (intmask & PCI_INT_DMA_HLT(CHANNEL_ISO_RCV)) {
- PRINTD(KERN_DEBUG, lynx->id, "iso receive");
-
- spin_lock(&lynx->iso_rcv.lock);
-
- lynx->iso_rcv.stat[lynx->iso_rcv.next] =
- reg_read(lynx, DMA_CHAN_STAT(CHANNEL_ISO_RCV));
-
- lynx->iso_rcv.used++;
- lynx->iso_rcv.next = (lynx->iso_rcv.next + 1) % NUM_ISORCV_PCL;
-
- if ((lynx->iso_rcv.next == lynx->iso_rcv.last)
- || !lynx->iso_rcv.chan_count) {
- PRINTD(KERN_DEBUG, lynx->id, "stopped");
- reg_write(lynx, DMA_WORD1_CMP_ENABLE(CHANNEL_ISO_RCV), 0);
- }
-
- run_sub_pcl(lynx, lynx->iso_rcv.pcl_start, lynx->iso_rcv.next,
- CHANNEL_ISO_RCV);
-
- spin_unlock(&lynx->iso_rcv.lock);
-
- tasklet_schedule(&lynx->iso_rcv.tq);
- }
-
- if (intmask & PCI_INT_DMA_HLT(CHANNEL_ASYNC_SEND)) {
- PRINTD(KERN_DEBUG, lynx->id, "async sent");
- spin_lock(&lynx->async.queue_lock);
-
- if (list_empty(&lynx->async.pcl_queue)) {
- spin_unlock(&lynx->async.queue_lock);
- PRINT(KERN_WARNING, lynx->id, "async dma halted, but no queued packet (maybe it was cancelled)");
- } else {
- struct ti_pcl pcl;
- u32 ack;
- struct hpsb_packet *packet;
-
- get_pcl(lynx, lynx->async.pcl, &pcl);
-
- packet = driver_packet(lynx->async.pcl_queue.next);
- list_del_init(&packet->driver_list);
-
- pci_unmap_single(lynx->dev, lynx->async.header_dma,
- packet->header_size, PCI_DMA_TODEVICE);
- if (packet->data_size) {
- pci_unmap_single(lynx->dev, lynx->async.data_dma,
- packet->data_size, PCI_DMA_TODEVICE);
- }
-
- if (!list_empty(&lynx->async.queue)) {
- send_next(lynx, hpsb_async);
- }
-
- spin_unlock(&lynx->async.queue_lock);
-
- if (pcl.pcl_status & DMA_CHAN_STAT_PKTCMPL) {
- if (pcl.pcl_status & DMA_CHAN_STAT_SPECIALACK) {
- ack = (pcl.pcl_status >> 15) & 0xf;
- PRINTD(KERN_INFO, lynx->id, "special ack %d", ack);
- ack = (ack == 1 ? ACKX_TIMEOUT : ACKX_SEND_ERROR);
- } else {
- ack = (pcl.pcl_status >> 15) & 0xf;
- }
- } else {
- PRINT(KERN_INFO, lynx->id, "async packet was not completed");
- ack = ACKX_SEND_ERROR;
- }
- hpsb_packet_sent(host, packet, ack);
- }
- }
-
- if (intmask & PCI_INT_DMA_HLT(CHANNEL_ISO_SEND)) {
- PRINTD(KERN_DEBUG, lynx->id, "iso sent");
- spin_lock(&lynx->iso_send.queue_lock);
-
- if (list_empty(&lynx->iso_send.pcl_queue)) {
- spin_unlock(&lynx->iso_send.queue_lock);
- PRINT(KERN_ERR, lynx->id, "iso send dma halted, but no queued packet");
- } else {
- struct ti_pcl pcl;
- u32 ack;
- struct hpsb_packet *packet;
-
- get_pcl(lynx, lynx->iso_send.pcl, &pcl);
-
- packet = driver_packet(lynx->iso_send.pcl_queue.next);
- list_del_init(&packet->driver_list);
-
- pci_unmap_single(lynx->dev, lynx->iso_send.header_dma,
- packet->header_size, PCI_DMA_TODEVICE);
- if (packet->data_size) {
- pci_unmap_single(lynx->dev, lynx->iso_send.data_dma,
- packet->data_size, PCI_DMA_TODEVICE);
- }
-#if 0 /* has been removed from ieee1394 core */
- if (!list_empty(&lynx->iso_send.queue)) {
- send_next(lynx, hpsb_iso);
- }
-#endif
- spin_unlock(&lynx->iso_send.queue_lock);
-
- if (pcl.pcl_status & DMA_CHAN_STAT_PKTCMPL) {
- if (pcl.pcl_status & DMA_CHAN_STAT_SPECIALACK) {
- ack = (pcl.pcl_status >> 15) & 0xf;
- PRINTD(KERN_INFO, lynx->id, "special ack %d", ack);
- ack = (ack == 1 ? ACKX_TIMEOUT : ACKX_SEND_ERROR);
- } else {
- ack = (pcl.pcl_status >> 15) & 0xf;
- }
- } else {
- PRINT(KERN_INFO, lynx->id, "iso send packet was not completed");
- ack = ACKX_SEND_ERROR;
- }
-
- hpsb_packet_sent(host, packet, ack); //FIXME: maybe we should just use ACK_COMPLETE and ACKX_SEND_ERROR
- }
- }
-
- if (intmask & PCI_INT_DMA_HLT(CHANNEL_ASYNC_RCV)) {
- /* general receive DMA completed */
- int stat = reg_read(lynx, DMA_CHAN_STAT(CHANNEL_ASYNC_RCV));
-
- PRINTD(KERN_DEBUG, lynx->id, "received packet size %d",
- stat & 0x1fff);
-
- if (stat & DMA_CHAN_STAT_SELFID) {
- lynx->selfid_size = stat & 0x1fff;
- handle_selfid(lynx, host);
- } else {
- quadlet_t *q_data = lynx->rcv_page;
- if ((*q_data >> 4 & 0xf) == TCODE_READQ_RESPONSE</