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-rw-r--r--drivers/media/dvb/bt8xx/bt878.c588
1 files changed, 588 insertions, 0 deletions
diff --git a/drivers/media/dvb/bt8xx/bt878.c b/drivers/media/dvb/bt8xx/bt878.c
new file mode 100644
index 000000000000..213ff7902024
--- /dev/null
+++ b/drivers/media/dvb/bt8xx/bt878.c
@@ -0,0 +1,588 @@
+/*
+ * bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card
+ *
+ * Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@t-online.de>
+ *
+ * large parts based on the bttv driver
+ * Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
+ * & Marcus Metzler (mocm@thp.uni-koeln.de)
+ * (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
+ *
+ * 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
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.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 "dmxdev.h"
+#include "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:off).");
+
+int bt878_num;
+struct bt878 bt878[BT878_MAX];
+
+EXPORT_SYMBOL(bt878_debug);
+EXPORT_SYMBOL(bt878_verbose);
+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 if(bt878_debug) printk
+
+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_alloc_consistent(bt->dev, bt->buf_size,
+ &bt->buf_dma);
+
+ if (!bt->buf_cpu)
+ return -ENOMEM;
+
+ memset(bt->buf_cpu, 0, bt->buf_size);
+ }
+
+ if (!bt->risc_cpu) {
+ bt->risc_size = PAGE_SIZE;
+ bt->risc_cpu =
+ pci_alloc_consistent(bt->dev, bt->risc_size,
+ &bt->risc_dma);
+
+ if (!bt->risc_cpu) {
+ bt878_mem_free(bt);
+ return -ENOMEM;
+ }
+
+ memset(bt->risc_cpu, 0, bt->risc_size);
+ }
+
+ 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("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(cpu_to_le32(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, struct pt_regs *regs)
+{
+ 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 interupt condition */
+
+
+ if (astat & (BT878_ASCERR | BT878_AOCERR)) {
+ if (bt878_verbose) {
+ printk("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
+ ("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
+ ("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 (down_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;
+ }
+ up(&bt->gpio_lock);
+ return retval;
+}
+
+EXPORT_SYMBOL(bt878_device_control);
+
+/***********************/
+/* PCI device handling */
+/***********************/
+
+static int __devinit bt878_probe(struct pci_dev *dev,
+ const struct pci_device_id *pci_id)
+{
+ int result;
+ unsigned char lat;
+ struct bt878 *bt;
+#if defined(__powerpc__)
+ unsigned int cmd;
+#endif
+
+ printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n",
+ bt878_num);
+ if (pci_enable_device(dev))
+ return -EIO;
+
+ 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;
+ }
+
+ pci_read_config_byte(dev, PCI_CLASS_REVISION, &bt->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);
+
+
+#if defined(__powerpc__)
+ /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
+ /* response on cards with no firmware is not enabled by OF */
+ pci_read_config_dword(dev, PCI_COMMAND, &cmd);
+ cmd = (cmd | PCI_COMMAND_MEMORY);
+ pci_write_config_dword(dev, PCI_COMMAND, cmd);
+#endif
+
+#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,
+ SA_SHIRQ | SA_INTERRUPT, "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(init_bt878(btv) < 0) {
+ bt878_remove(dev);
+ return -EIO;
+ }
+*/
+
+ if ((result = bt878_mem_alloc(bt))) {
+ printk("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 __devexit bt878_remove(struct pci_dev *pci_dev)
+{
+ u8 command;
+ struct bt878 *bt = pci_get_drvdata(pci_dev);
+
+ if (bt878_verbose)
+ printk("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_set_drvdata(pci_dev, NULL);
+ pci_disable_device(pci_dev);
+ return;
+}
+
+static struct pci_device_id bt878_pci_tbl[] __devinitdata = {
+ {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BROOKTREE_878,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {0,}
+};
+
+MODULE_DEVICE_TABLE(pci, bt878_pci_tbl);
+
+static struct pci_driver bt878_pci_driver = {
+ .name = "bt878",
+ .id_table = bt878_pci_tbl,
+ .probe = bt878_probe,
+ .remove = bt878_remove,
+};
+
+static int bt878_pci_driver_registered = 0;
+
+/*******************************/
+/* Module management functions */
+/*******************************/
+
+static int bt878_init_module(void)
+{
+ bt878_num = 0;
+ bt878_pci_driver_registered = 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);
+/*
+ bt878_check_chipset();
+*/
+ /* later we register inside of bt878_find_audio_dma()
+ * because we may want to ignore certain cards */
+ bt878_pci_driver_registered = 1;
+ return pci_register_driver(&bt878_pci_driver);
+}
+
+static void bt878_cleanup_module(void)
+{
+ if (bt878_pci_driver_registered) {
+ bt878_pci_driver_registered = 0;
+ pci_unregister_driver(&bt878_pci_driver);
+ }
+ return;
+}
+
+module_init(bt878_init_module);
+module_exit(bt878_cleanup_module);
+
+//MODULE_AUTHOR("XXX");
+MODULE_LICENSE("GPL");
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.