mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 19:46:45 +07:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
589 lines
14 KiB
C
589 lines
14 KiB
C
/*
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* bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card
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*
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* Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@t-online.de>
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*
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* large parts based on the bttv driver
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* Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
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* & Marcus Metzler (mocm@thp.uni-koeln.de)
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* (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
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*
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <asm/io.h>
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#include <linux/ioport.h>
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/kmod.h>
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#include <linux/vmalloc.h>
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#include <linux/init.h>
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#include "dmxdev.h"
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#include "dvbdev.h"
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#include "bt878.h"
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#include "dst_priv.h"
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/**************************************/
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/* Miscellaneous utility definitions */
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/**************************************/
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static unsigned int bt878_verbose = 1;
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static unsigned int bt878_debug;
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module_param_named(verbose, bt878_verbose, int, 0444);
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MODULE_PARM_DESC(verbose,
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"verbose startup messages, default is 1 (yes)");
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module_param_named(debug, bt878_debug, int, 0644);
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MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
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int bt878_num;
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struct bt878 bt878[BT878_MAX];
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EXPORT_SYMBOL(bt878_debug);
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EXPORT_SYMBOL(bt878_verbose);
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EXPORT_SYMBOL(bt878_num);
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EXPORT_SYMBOL(bt878);
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#define btwrite(dat,adr) bmtwrite((dat), (bt->bt878_mem+(adr)))
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#define btread(adr) bmtread(bt->bt878_mem+(adr))
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#define btand(dat,adr) btwrite((dat) & btread(adr), adr)
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#define btor(dat,adr) btwrite((dat) | btread(adr), adr)
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#define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr)
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#if defined(dprintk)
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#undef dprintk
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#endif
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#define dprintk if(bt878_debug) printk
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static void bt878_mem_free(struct bt878 *bt)
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{
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if (bt->buf_cpu) {
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pci_free_consistent(bt->dev, bt->buf_size, bt->buf_cpu,
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bt->buf_dma);
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bt->buf_cpu = NULL;
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}
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if (bt->risc_cpu) {
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pci_free_consistent(bt->dev, bt->risc_size, bt->risc_cpu,
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bt->risc_dma);
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bt->risc_cpu = NULL;
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}
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}
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static int bt878_mem_alloc(struct bt878 *bt)
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{
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if (!bt->buf_cpu) {
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bt->buf_size = 128 * 1024;
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bt->buf_cpu =
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pci_alloc_consistent(bt->dev, bt->buf_size,
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&bt->buf_dma);
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if (!bt->buf_cpu)
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return -ENOMEM;
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memset(bt->buf_cpu, 0, bt->buf_size);
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}
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if (!bt->risc_cpu) {
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bt->risc_size = PAGE_SIZE;
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bt->risc_cpu =
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pci_alloc_consistent(bt->dev, bt->risc_size,
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&bt->risc_dma);
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if (!bt->risc_cpu) {
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bt878_mem_free(bt);
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return -ENOMEM;
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}
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memset(bt->risc_cpu, 0, bt->risc_size);
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}
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return 0;
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}
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/* RISC instructions */
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#define RISC_WRITE (0x01 << 28)
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#define RISC_JUMP (0x07 << 28)
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#define RISC_SYNC (0x08 << 28)
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/* RISC bits */
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#define RISC_WR_SOL (1 << 27)
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#define RISC_WR_EOL (1 << 26)
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#define RISC_IRQ (1 << 24)
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#define RISC_STATUS(status) ((((~status) & 0x0F) << 20) | ((status & 0x0F) << 16))
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#define RISC_SYNC_RESYNC (1 << 15)
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#define RISC_SYNC_FM1 0x06
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#define RISC_SYNC_VRO 0x0C
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#define RISC_FLUSH() bt->risc_pos = 0
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#define RISC_INSTR(instr) bt->risc_cpu[bt->risc_pos++] = cpu_to_le32(instr)
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static int bt878_make_risc(struct bt878 *bt)
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{
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bt->block_bytes = bt->buf_size >> 4;
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bt->block_count = 1 << 4;
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bt->line_bytes = bt->block_bytes;
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bt->line_count = bt->block_count;
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while (bt->line_bytes > 4095) {
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bt->line_bytes >>= 1;
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bt->line_count <<= 1;
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}
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if (bt->line_count > 255) {
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printk("bt878: buffer size error!\n");
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return -EINVAL;
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}
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return 0;
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}
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static void bt878_risc_program(struct bt878 *bt, u32 op_sync_orin)
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{
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u32 buf_pos = 0;
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u32 line;
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RISC_FLUSH();
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RISC_INSTR(RISC_SYNC | RISC_SYNC_FM1 | op_sync_orin);
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RISC_INSTR(0);
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dprintk("bt878: risc len lines %u, bytes per line %u\n",
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bt->line_count, bt->line_bytes);
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for (line = 0; line < bt->line_count; line++) {
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// At the beginning of every block we issue an IRQ with previous (finished) block number set
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if (!(buf_pos % bt->block_bytes))
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RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
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RISC_IRQ |
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RISC_STATUS(((buf_pos /
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bt->block_bytes) +
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(bt->block_count -
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1)) %
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bt->block_count) | bt->
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line_bytes);
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else
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RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
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bt->line_bytes);
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RISC_INSTR(bt->buf_dma + buf_pos);
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buf_pos += bt->line_bytes;
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}
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RISC_INSTR(RISC_SYNC | op_sync_orin | RISC_SYNC_VRO);
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RISC_INSTR(0);
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RISC_INSTR(RISC_JUMP);
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RISC_INSTR(bt->risc_dma);
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btwrite((bt->line_count << 16) | bt->line_bytes, BT878_APACK_LEN);
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}
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/*****************************/
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/* Start/Stop grabbing funcs */
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/*****************************/
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void bt878_start(struct bt878 *bt, u32 controlreg, u32 op_sync_orin,
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u32 irq_err_ignore)
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{
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u32 int_mask;
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dprintk("bt878 debug: bt878_start (ctl=%8.8x)\n", controlreg);
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/* complete the writing of the risc dma program now we have
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* the card specifics
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*/
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bt878_risc_program(bt, op_sync_orin);
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controlreg &= ~0x1f;
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controlreg |= 0x1b;
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btwrite(cpu_to_le32(bt->risc_dma), BT878_ARISC_START);
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/* original int mask had :
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* 6 2 8 4 0
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* 1111 1111 1000 0000 0000
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* SCERR|OCERR|PABORT|RIPERR|FDSR|FTRGT|FBUS|RISCI
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* Hacked for DST to:
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* SCERR | OCERR | FDSR | FTRGT | FBUS | RISCI
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*/
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int_mask = BT878_ASCERR | BT878_AOCERR | BT878_APABORT |
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BT878_ARIPERR | BT878_APPERR | BT878_AFDSR | BT878_AFTRGT |
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BT878_AFBUS | BT878_ARISCI;
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/* ignore pesky bits */
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int_mask &= ~irq_err_ignore;
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btwrite(int_mask, BT878_AINT_MASK);
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btwrite(controlreg, BT878_AGPIO_DMA_CTL);
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}
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void bt878_stop(struct bt878 *bt)
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{
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u32 stat;
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int i = 0;
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dprintk("bt878 debug: bt878_stop\n");
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btwrite(0, BT878_AINT_MASK);
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btand(~0x13, BT878_AGPIO_DMA_CTL);
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do {
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stat = btread(BT878_AINT_STAT);
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if (!(stat & BT878_ARISC_EN))
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break;
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i++;
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} while (i < 500);
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dprintk("bt878(%d) debug: bt878_stop, i=%d, stat=0x%8.8x\n",
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bt->nr, i, stat);
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}
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EXPORT_SYMBOL(bt878_start);
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EXPORT_SYMBOL(bt878_stop);
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/*****************************/
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/* Interrupt service routine */
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/*****************************/
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static irqreturn_t bt878_irq(int irq, void *dev_id, struct pt_regs *regs)
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{
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u32 stat, astat, mask;
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int count;
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struct bt878 *bt;
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bt = (struct bt878 *) dev_id;
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count = 0;
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while (1) {
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stat = btread(BT878_AINT_STAT);
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mask = btread(BT878_AINT_MASK);
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if (!(astat = (stat & mask)))
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return IRQ_NONE; /* this interrupt is not for me */
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/* dprintk("bt878(%d) debug: irq count %d, stat 0x%8.8x, mask 0x%8.8x\n",bt->nr,count,stat,mask); */
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btwrite(astat, BT878_AINT_STAT); /* try to clear interupt condition */
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if (astat & (BT878_ASCERR | BT878_AOCERR)) {
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if (bt878_verbose) {
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printk("bt878(%d): irq%s%s risc_pc=%08x\n",
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bt->nr,
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(astat & BT878_ASCERR) ? " SCERR" :
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"",
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(astat & BT878_AOCERR) ? " OCERR" :
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"", btread(BT878_ARISC_PC));
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}
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}
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if (astat & (BT878_APABORT | BT878_ARIPERR | BT878_APPERR)) {
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if (bt878_verbose) {
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printk
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("bt878(%d): irq%s%s%s risc_pc=%08x\n",
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bt->nr,
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(astat & BT878_APABORT) ? " PABORT" :
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"",
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(astat & BT878_ARIPERR) ? " RIPERR" :
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"",
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(astat & BT878_APPERR) ? " PPERR" :
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"", btread(BT878_ARISC_PC));
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}
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}
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if (astat & (BT878_AFDSR | BT878_AFTRGT | BT878_AFBUS)) {
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if (bt878_verbose) {
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printk
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("bt878(%d): irq%s%s%s risc_pc=%08x\n",
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bt->nr,
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(astat & BT878_AFDSR) ? " FDSR" : "",
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(astat & BT878_AFTRGT) ? " FTRGT" :
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"",
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(astat & BT878_AFBUS) ? " FBUS" : "",
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btread(BT878_ARISC_PC));
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}
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}
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if (astat & BT878_ARISCI) {
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bt->finished_block = (stat & BT878_ARISCS) >> 28;
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tasklet_schedule(&bt->tasklet);
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break;
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}
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count++;
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if (count > 20) {
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btwrite(0, BT878_AINT_MASK);
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printk(KERN_ERR
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"bt878(%d): IRQ lockup, cleared int mask\n",
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bt->nr);
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break;
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}
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}
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return IRQ_HANDLED;
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}
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int
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bt878_device_control(struct bt878 *bt, unsigned int cmd, union dst_gpio_packet *mp)
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{
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int retval;
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retval = 0;
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if (down_interruptible (&bt->gpio_lock))
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return -ERESTARTSYS;
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/* special gpio signal */
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switch (cmd) {
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case DST_IG_ENABLE:
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// dprintk("dvb_bt8xx: dst enable mask 0x%02x enb 0x%02x \n", mp->dstg.enb.mask, mp->dstg.enb.enable);
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retval = bttv_gpio_enable(bt->bttv_nr,
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mp->enb.mask,
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mp->enb.enable);
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break;
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case DST_IG_WRITE:
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// dprintk("dvb_bt8xx: dst write gpio mask 0x%02x out 0x%02x\n", mp->dstg.outp.mask, mp->dstg.outp.highvals);
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retval = bttv_write_gpio(bt->bttv_nr,
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mp->outp.mask,
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mp->outp.highvals);
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break;
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case DST_IG_READ:
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/* read */
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retval = bttv_read_gpio(bt->bttv_nr, &mp->rd.value);
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// dprintk("dvb_bt8xx: dst read gpio 0x%02x\n", (unsigned)mp->dstg.rd.value);
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break;
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case DST_IG_TS:
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/* Set packet size */
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bt->TS_Size = mp->psize;
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break;
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default:
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retval = -EINVAL;
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break;
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}
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up(&bt->gpio_lock);
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return retval;
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}
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EXPORT_SYMBOL(bt878_device_control);
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/***********************/
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/* PCI device handling */
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/***********************/
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static int __devinit bt878_probe(struct pci_dev *dev,
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const struct pci_device_id *pci_id)
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{
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int result;
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unsigned char lat;
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struct bt878 *bt;
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#if defined(__powerpc__)
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unsigned int cmd;
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#endif
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printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n",
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bt878_num);
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if (pci_enable_device(dev))
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return -EIO;
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bt = &bt878[bt878_num];
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bt->dev = dev;
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bt->nr = bt878_num;
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bt->shutdown = 0;
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bt->id = dev->device;
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bt->irq = dev->irq;
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bt->bt878_adr = pci_resource_start(dev, 0);
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if (!request_mem_region(pci_resource_start(dev, 0),
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pci_resource_len(dev, 0), "bt878")) {
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result = -EBUSY;
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goto fail0;
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}
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pci_read_config_byte(dev, PCI_CLASS_REVISION, &bt->revision);
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pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
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printk(KERN_INFO "bt878(%d): Bt%x (rev %d) at %02x:%02x.%x, ",
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bt878_num, bt->id, bt->revision, dev->bus->number,
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PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
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printk("irq: %d, latency: %d, memory: 0x%lx\n",
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bt->irq, lat, bt->bt878_adr);
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#if defined(__powerpc__)
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/* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
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/* response on cards with no firmware is not enabled by OF */
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pci_read_config_dword(dev, PCI_COMMAND, &cmd);
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cmd = (cmd | PCI_COMMAND_MEMORY);
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pci_write_config_dword(dev, PCI_COMMAND, cmd);
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#endif
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#ifdef __sparc__
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bt->bt878_mem = (unsigned char *) bt->bt878_adr;
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#else
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bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000);
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#endif
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/* clear interrupt mask */
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btwrite(0, BT848_INT_MASK);
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result = request_irq(bt->irq, bt878_irq,
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SA_SHIRQ | SA_INTERRUPT, "bt878",
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(void *) bt);
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if (result == -EINVAL) {
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printk(KERN_ERR "bt878(%d): Bad irq number or handler\n",
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bt878_num);
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goto fail1;
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}
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if (result == -EBUSY) {
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printk(KERN_ERR
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"bt878(%d): IRQ %d busy, change your PnP config in BIOS\n",
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bt878_num, bt->irq);
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goto fail1;
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}
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if (result < 0)
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goto fail1;
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pci_set_master(dev);
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pci_set_drvdata(dev, bt);
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/* if(init_bt878(btv) < 0) {
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bt878_remove(dev);
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return -EIO;
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}
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*/
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if ((result = bt878_mem_alloc(bt))) {
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printk("bt878: failed to allocate memory!\n");
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goto fail2;
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}
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bt878_make_risc(bt);
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btwrite(0, BT878_AINT_MASK);
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bt878_num++;
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return 0;
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fail2:
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free_irq(bt->irq, bt);
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fail1:
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release_mem_region(pci_resource_start(bt->dev, 0),
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pci_resource_len(bt->dev, 0));
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fail0:
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pci_disable_device(dev);
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return result;
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}
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static void __devexit bt878_remove(struct pci_dev *pci_dev)
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{
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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:
|
|
*/
|