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linux_dsm_epyc7002/drivers/media/pci/bt8xx/bt878.c
Thomas Gleixner 28c8eea7c6 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 34 
Based on 1 normalized pattern(s):

  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 or point your
  browser to http www gnu org copyleft gpl html

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520170857.367248213@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:27:11 +02:00

563 lines
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card
*
* Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@htp-tel.de>
*
* large parts based on the bttv driver
* Copyright (C) 1996,97,98 Ralph Metzler (rjkm@metzlerbros.de)
* & Marcus Metzler (mocm@metzlerbros.de)
* (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <asm/io.h>
#include <linux/ioport.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/kmod.h>
#include <linux/vmalloc.h>
#include <linux/init.h>
#include <media/dmxdev.h>
#include <media/dvbdev.h>
#include "bt878.h"
#include "dst_priv.h"
/**************************************/
/* Miscellaneous utility definitions */
/**************************************/
static unsigned int bt878_verbose = 1;
static unsigned int bt878_debug;
module_param_named(verbose, bt878_verbose, int, 0444);
MODULE_PARM_DESC(verbose,
"verbose startup messages, default is 1 (yes)");
module_param_named(debug, bt878_debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off debugging, default is 0 (off).");
int bt878_num;
struct bt878 bt878[BT878_MAX];
EXPORT_SYMBOL(bt878_num);
EXPORT_SYMBOL(bt878);
#define btwrite(dat,adr) bmtwrite((dat), (bt->bt878_mem+(adr)))
#define btread(adr) bmtread(bt->bt878_mem+(adr))
#define btand(dat,adr) btwrite((dat) & btread(adr), adr)
#define btor(dat,adr) btwrite((dat) | btread(adr), adr)
#define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr)
#if defined(dprintk)
#undef dprintk
#endif
#define dprintk(fmt, arg...) \
do { \
if (bt878_debug) \
printk(KERN_DEBUG fmt, ##arg); \
} while (0)
static void bt878_mem_free(struct bt878 *bt)
{
if (bt->buf_cpu) {
pci_free_consistent(bt->dev, bt->buf_size, bt->buf_cpu,
bt->buf_dma);
bt->buf_cpu = NULL;
}
if (bt->risc_cpu) {
pci_free_consistent(bt->dev, bt->risc_size, bt->risc_cpu,
bt->risc_dma);
bt->risc_cpu = NULL;
}
}
static int bt878_mem_alloc(struct bt878 *bt)
{
if (!bt->buf_cpu) {
bt->buf_size = 128 * 1024;
bt->buf_cpu = pci_zalloc_consistent(bt->dev, bt->buf_size,
&bt->buf_dma);
if (!bt->buf_cpu)
return -ENOMEM;
}
if (!bt->risc_cpu) {
bt->risc_size = PAGE_SIZE;
bt->risc_cpu = pci_zalloc_consistent(bt->dev, bt->risc_size,
&bt->risc_dma);
if (!bt->risc_cpu) {
bt878_mem_free(bt);
return -ENOMEM;
}
}
return 0;
}
/* RISC instructions */
#define RISC_WRITE (0x01 << 28)
#define RISC_JUMP (0x07 << 28)
#define RISC_SYNC (0x08 << 28)
/* RISC bits */
#define RISC_WR_SOL (1 << 27)
#define RISC_WR_EOL (1 << 26)
#define RISC_IRQ (1 << 24)
#define RISC_STATUS(status) ((((~status) & 0x0F) << 20) | ((status & 0x0F) << 16))
#define RISC_SYNC_RESYNC (1 << 15)
#define RISC_SYNC_FM1 0x06
#define RISC_SYNC_VRO 0x0C
#define RISC_FLUSH() bt->risc_pos = 0
#define RISC_INSTR(instr) bt->risc_cpu[bt->risc_pos++] = cpu_to_le32(instr)
static int bt878_make_risc(struct bt878 *bt)
{
bt->block_bytes = bt->buf_size >> 4;
bt->block_count = 1 << 4;
bt->line_bytes = bt->block_bytes;
bt->line_count = bt->block_count;
while (bt->line_bytes > 4095) {
bt->line_bytes >>= 1;
bt->line_count <<= 1;
}
if (bt->line_count > 255) {
printk(KERN_ERR "bt878: buffer size error!\n");
return -EINVAL;
}
return 0;
}
static void bt878_risc_program(struct bt878 *bt, u32 op_sync_orin)
{
u32 buf_pos = 0;
u32 line;
RISC_FLUSH();
RISC_INSTR(RISC_SYNC | RISC_SYNC_FM1 | op_sync_orin);
RISC_INSTR(0);
dprintk("bt878: risc len lines %u, bytes per line %u\n",
bt->line_count, bt->line_bytes);
for (line = 0; line < bt->line_count; line++) {
// At the beginning of every block we issue an IRQ with previous (finished) block number set
if (!(buf_pos % bt->block_bytes))
RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
RISC_IRQ |
RISC_STATUS(((buf_pos /
bt->block_bytes) +
(bt->block_count -
1)) %
bt->block_count) | bt->
line_bytes);
else
RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
bt->line_bytes);
RISC_INSTR(bt->buf_dma + buf_pos);
buf_pos += bt->line_bytes;
}
RISC_INSTR(RISC_SYNC | op_sync_orin | RISC_SYNC_VRO);
RISC_INSTR(0);
RISC_INSTR(RISC_JUMP);
RISC_INSTR(bt->risc_dma);
btwrite((bt->line_count << 16) | bt->line_bytes, BT878_APACK_LEN);
}
/*****************************/
/* Start/Stop grabbing funcs */
/*****************************/
void bt878_start(struct bt878 *bt, u32 controlreg, u32 op_sync_orin,
u32 irq_err_ignore)
{
u32 int_mask;
dprintk("bt878 debug: bt878_start (ctl=%8.8x)\n", controlreg);
/* complete the writing of the risc dma program now we have
* the card specifics
*/
bt878_risc_program(bt, op_sync_orin);
controlreg &= ~0x1f;
controlreg |= 0x1b;
btwrite(bt->risc_dma, BT878_ARISC_START);
/* original int mask had :
* 6 2 8 4 0
* 1111 1111 1000 0000 0000
* SCERR|OCERR|PABORT|RIPERR|FDSR|FTRGT|FBUS|RISCI
* Hacked for DST to:
* SCERR | OCERR | FDSR | FTRGT | FBUS | RISCI
*/
int_mask = BT878_ASCERR | BT878_AOCERR | BT878_APABORT |
BT878_ARIPERR | BT878_APPERR | BT878_AFDSR | BT878_AFTRGT |
BT878_AFBUS | BT878_ARISCI;
/* ignore pesky bits */
int_mask &= ~irq_err_ignore;
btwrite(int_mask, BT878_AINT_MASK);
btwrite(controlreg, BT878_AGPIO_DMA_CTL);
}
void bt878_stop(struct bt878 *bt)
{
u32 stat;
int i = 0;
dprintk("bt878 debug: bt878_stop\n");
btwrite(0, BT878_AINT_MASK);
btand(~0x13, BT878_AGPIO_DMA_CTL);
do {
stat = btread(BT878_AINT_STAT);
if (!(stat & BT878_ARISC_EN))
break;
i++;
} while (i < 500);
dprintk("bt878(%d) debug: bt878_stop, i=%d, stat=0x%8.8x\n",
bt->nr, i, stat);
}
EXPORT_SYMBOL(bt878_start);
EXPORT_SYMBOL(bt878_stop);
/*****************************/
/* Interrupt service routine */
/*****************************/
static irqreturn_t bt878_irq(int irq, void *dev_id)
{
u32 stat, astat, mask;
int count;
struct bt878 *bt;
bt = (struct bt878 *) dev_id;
count = 0;
while (1) {
stat = btread(BT878_AINT_STAT);
mask = btread(BT878_AINT_MASK);
if (!(astat = (stat & mask)))
return IRQ_NONE; /* this interrupt is not for me */
/* dprintk("bt878(%d) debug: irq count %d, stat 0x%8.8x, mask 0x%8.8x\n",bt->nr,count,stat,mask); */
btwrite(astat, BT878_AINT_STAT); /* try to clear interrupt condition */
if (astat & (BT878_ASCERR | BT878_AOCERR)) {
if (bt878_verbose) {
printk(KERN_INFO
"bt878(%d): irq%s%s risc_pc=%08x\n",
bt->nr,
(astat & BT878_ASCERR) ? " SCERR" :
"",
(astat & BT878_AOCERR) ? " OCERR" :
"", btread(BT878_ARISC_PC));
}
}
if (astat & (BT878_APABORT | BT878_ARIPERR | BT878_APPERR)) {
if (bt878_verbose) {
printk(KERN_INFO
"bt878(%d): irq%s%s%s risc_pc=%08x\n",
bt->nr,
(astat & BT878_APABORT) ? " PABORT" :
"",
(astat & BT878_ARIPERR) ? " RIPERR" :
"",
(astat & BT878_APPERR) ? " PPERR" :
"", btread(BT878_ARISC_PC));
}
}
if (astat & (BT878_AFDSR | BT878_AFTRGT | BT878_AFBUS)) {
if (bt878_verbose) {
printk(KERN_INFO
"bt878(%d): irq%s%s%s risc_pc=%08x\n",
bt->nr,
(astat & BT878_AFDSR) ? " FDSR" : "",
(astat & BT878_AFTRGT) ? " FTRGT" :
"",
(astat & BT878_AFBUS) ? " FBUS" : "",
btread(BT878_ARISC_PC));
}
}
if (astat & BT878_ARISCI) {
bt->finished_block = (stat & BT878_ARISCS) >> 28;
tasklet_schedule(&bt->tasklet);
break;
}
count++;
if (count > 20) {
btwrite(0, BT878_AINT_MASK);
printk(KERN_ERR
"bt878(%d): IRQ lockup, cleared int mask\n",
bt->nr);
break;
}
}
return IRQ_HANDLED;
}
int
bt878_device_control(struct bt878 *bt, unsigned int cmd, union dst_gpio_packet *mp)
{
int retval;
retval = 0;
if (mutex_lock_interruptible(&bt->gpio_lock))
return -ERESTARTSYS;
/* special gpio signal */
switch (cmd) {
case DST_IG_ENABLE:
// dprintk("dvb_bt8xx: dst enable mask 0x%02x enb 0x%02x \n", mp->dstg.enb.mask, mp->dstg.enb.enable);
retval = bttv_gpio_enable(bt->bttv_nr,
mp->enb.mask,
mp->enb.enable);
break;
case DST_IG_WRITE:
// dprintk("dvb_bt8xx: dst write gpio mask 0x%02x out 0x%02x\n", mp->dstg.outp.mask, mp->dstg.outp.highvals);
retval = bttv_write_gpio(bt->bttv_nr,
mp->outp.mask,
mp->outp.highvals);
break;
case DST_IG_READ:
/* read */
retval = bttv_read_gpio(bt->bttv_nr, &mp->rd.value);
// dprintk("dvb_bt8xx: dst read gpio 0x%02x\n", (unsigned)mp->dstg.rd.value);
break;
case DST_IG_TS:
/* Set packet size */
bt->TS_Size = mp->psize;
break;
default:
retval = -EINVAL;
break;
}
mutex_unlock(&bt->gpio_lock);
return retval;
}
EXPORT_SYMBOL(bt878_device_control);
#define BROOKTREE_878_DEVICE(vend, dev, name) \
{ \
.vendor = PCI_VENDOR_ID_BROOKTREE, \
.device = PCI_DEVICE_ID_BROOKTREE_878, \
.subvendor = (vend), .subdevice = (dev), \
.driver_data = (unsigned long) name \
}
static const struct pci_device_id bt878_pci_tbl[] = {
BROOKTREE_878_DEVICE(0x0071, 0x0101, "Nebula Electronics DigiTV"),
BROOKTREE_878_DEVICE(0x1461, 0x0761, "AverMedia AverTV DVB-T 761"),
BROOKTREE_878_DEVICE(0x11bd, 0x001c, "Pinnacle PCTV Sat"),
BROOKTREE_878_DEVICE(0x11bd, 0x0026, "Pinnacle PCTV SAT CI"),
BROOKTREE_878_DEVICE(0x1822, 0x0001, "Twinhan VisionPlus DVB"),
BROOKTREE_878_DEVICE(0x270f, 0xfc00,
"ChainTech digitop DST-1000 DVB-S"),
BROOKTREE_878_DEVICE(0x1461, 0x0771, "AVermedia AverTV DVB-T 771"),
BROOKTREE_878_DEVICE(0x18ac, 0xdb10, "DViCO FusionHDTV DVB-T Lite"),
BROOKTREE_878_DEVICE(0x18ac, 0xdb11, "Ultraview DVB-T Lite"),
BROOKTREE_878_DEVICE(0x18ac, 0xd500, "DViCO FusionHDTV 5 Lite"),
BROOKTREE_878_DEVICE(0x7063, 0x2000, "pcHDTV HD-2000 TV"),
BROOKTREE_878_DEVICE(0x1822, 0x0026, "DNTV Live! Mini"),
{ }
};
MODULE_DEVICE_TABLE(pci, bt878_pci_tbl);
static const char * card_name(const struct pci_device_id *id)
{
return id->driver_data ? (const char *)id->driver_data : "Unknown";
}
/***********************/
/* PCI device handling */
/***********************/
static int bt878_probe(struct pci_dev *dev, const struct pci_device_id *pci_id)
{
int result = 0;
unsigned char lat;
struct bt878 *bt;
unsigned int cardid;
printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n",
bt878_num);
if (bt878_num >= BT878_MAX) {
printk(KERN_ERR "bt878: Too many devices inserted\n");
return -ENOMEM;
}
if (pci_enable_device(dev))
return -EIO;
cardid = dev->subsystem_device << 16;
cardid |= dev->subsystem_vendor;
printk(KERN_INFO "%s: card id=[0x%x],[ %s ] has DVB functions.\n",
__func__, cardid, card_name(pci_id));
bt = &bt878[bt878_num];
bt->dev = dev;
bt->nr = bt878_num;
bt->shutdown = 0;
bt->id = dev->device;
bt->irq = dev->irq;
bt->bt878_adr = pci_resource_start(dev, 0);
if (!request_mem_region(pci_resource_start(dev, 0),
pci_resource_len(dev, 0), "bt878")) {
result = -EBUSY;
goto fail0;
}
bt->revision = dev->revision;
pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
printk(KERN_INFO "bt878(%d): Bt%x (rev %d) at %02x:%02x.%x, ",
bt878_num, bt->id, bt->revision, dev->bus->number,
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
printk("irq: %d, latency: %d, memory: 0x%lx\n",
bt->irq, lat, bt->bt878_adr);
#ifdef __sparc__
bt->bt878_mem = (unsigned char *) bt->bt878_adr;
#else
bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000);
#endif
/* clear interrupt mask */
btwrite(0, BT848_INT_MASK);
result = request_irq(bt->irq, bt878_irq,
IRQF_SHARED, "bt878", (void *) bt);
if (result == -EINVAL) {
printk(KERN_ERR "bt878(%d): Bad irq number or handler\n",
bt878_num);
goto fail1;
}
if (result == -EBUSY) {
printk(KERN_ERR
"bt878(%d): IRQ %d busy, change your PnP config in BIOS\n",
bt878_num, bt->irq);
goto fail1;
}
if (result < 0)
goto fail1;
pci_set_master(dev);
pci_set_drvdata(dev, bt);
if ((result = bt878_mem_alloc(bt))) {
printk(KERN_ERR "bt878: failed to allocate memory!\n");
goto fail2;
}
bt878_make_risc(bt);
btwrite(0, BT878_AINT_MASK);
bt878_num++;
return 0;
fail2:
free_irq(bt->irq, bt);
fail1:
release_mem_region(pci_resource_start(bt->dev, 0),
pci_resource_len(bt->dev, 0));
fail0:
pci_disable_device(dev);
return result;
}
static void bt878_remove(struct pci_dev *pci_dev)
{
u8 command;
struct bt878 *bt = pci_get_drvdata(pci_dev);
if (bt878_verbose)
printk(KERN_INFO "bt878(%d): unloading\n", bt->nr);
/* turn off all capturing, DMA and IRQs */
btand(~0x13, BT878_AGPIO_DMA_CTL);
/* first disable interrupts before unmapping the memory! */
btwrite(0, BT878_AINT_MASK);
btwrite(~0U, BT878_AINT_STAT);
/* disable PCI bus-mastering */
pci_read_config_byte(bt->dev, PCI_COMMAND, &command);
/* Should this be &=~ ?? */
command &= ~PCI_COMMAND_MASTER;
pci_write_config_byte(bt->dev, PCI_COMMAND, command);
free_irq(bt->irq, bt);
printk(KERN_DEBUG "bt878_mem: 0x%p.\n", bt->bt878_mem);
if (bt->bt878_mem)
iounmap(bt->bt878_mem);
release_mem_region(pci_resource_start(bt->dev, 0),
pci_resource_len(bt->dev, 0));
/* wake up any waiting processes
because shutdown flag is set, no new processes (in this queue)
are expected
*/
bt->shutdown = 1;
bt878_mem_free(bt);
pci_disable_device(pci_dev);
return;
}
static struct pci_driver bt878_pci_driver = {
.name = "bt878",
.id_table = bt878_pci_tbl,
.probe = bt878_probe,
.remove = bt878_remove,
};
/*******************************/
/* Module management functions */
/*******************************/
static int __init bt878_init_module(void)
{
bt878_num = 0;
printk(KERN_INFO "bt878: AUDIO driver version %d.%d.%d loaded\n",
(BT878_VERSION_CODE >> 16) & 0xff,
(BT878_VERSION_CODE >> 8) & 0xff,
BT878_VERSION_CODE & 0xff);
return pci_register_driver(&bt878_pci_driver);
}
static void __exit bt878_cleanup_module(void)
{
pci_unregister_driver(&bt878_pci_driver);
}
module_init(bt878_init_module);
module_exit(bt878_cleanup_module);
MODULE_LICENSE("GPL");
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