401 lines
11 KiB
C
401 lines
11 KiB
C
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/*
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* Driver for the NXP SAA7164 PCIe bridge
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*
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* Copyright (c) 2009 Steven Toth <stoth@kernellabs.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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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*
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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Driver architecture
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*******************
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saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c
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| : Standard Linux driver framework for creating
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| : exposing and managing interfaces to the rest
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| : of the kernel or userland. Also uses _fw.c to load
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| : firmware direct into the PCIe bus, bypassing layers.
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V
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saa7164_api..() : Translate kernel specific functions/features
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| : into command buffers.
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V
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saa7164_cmd..() : Manages the flow of command packets on/off,
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| : the bus. Deal with bus errors, timeouts etc.
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V
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saa7164_bus..() : Manage a read/write memory ring buffer in the
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| : PCIe Address space.
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| saa7164_fw...() : Load any frimware
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| | : direct into the device
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V V
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<- ----------------- PCIe address space -------------------- ->
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*/
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#include <linux/pci.h>
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#include <linux/i2c.h>
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#include <linux/i2c-algo-bit.h>
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#include <linux/kdev_t.h>
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#include <media/tuner.h>
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#include <media/tveeprom.h>
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#include <media/videobuf-dma-sg.h>
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#include <media/videobuf-dvb.h>
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#include "saa7164-reg.h"
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#include "saa7164-types.h"
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#include <linux/version.h>
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#include <linux/mutex.h>
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#define SAA7164_MAXBOARDS 8
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#define UNSET (-1U)
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#define SAA7164_BOARD_NOAUTO UNSET
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#define SAA7164_BOARD_UNKNOWN 0
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#define SAA7164_BOARD_UNKNOWN_REV2 1
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#define SAA7164_BOARD_UNKNOWN_REV3 2
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#define SAA7164_BOARD_HAUPPAUGE_HVR2250 3
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#define SAA7164_BOARD_HAUPPAUGE_HVR2200 4
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#define SAA7164_BOARD_HAUPPAUGE_HVR2200_2 5
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#define SAA7164_BOARD_HAUPPAUGE_HVR2200_3 6
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#define SAA7164_BOARD_HAUPPAUGE_HVR2250_2 7
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#define SAA7164_BOARD_HAUPPAUGE_HVR2250_3 8
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#define SAA7164_MAX_UNITS 8
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#define SAA7164_TS_NUMBER_OF_LINES 312
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#define SAA7164_PT_ENTRIES 16 /* (312 * 188) / 4096 */
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#define DBGLVL_FW 4
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#define DBGLVL_DVB 8
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#define DBGLVL_I2C 16
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#define DBGLVL_API 32
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#define DBGLVL_CMD 64
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#define DBGLVL_BUS 128
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#define DBGLVL_IRQ 256
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#define DBGLVL_BUF 512
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enum port_t {
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SAA7164_MPEG_UNDEFINED = 0,
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SAA7164_MPEG_DVB,
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};
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enum saa7164_i2c_bus_nr {
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SAA7164_I2C_BUS_0 = 0,
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SAA7164_I2C_BUS_1,
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SAA7164_I2C_BUS_2,
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};
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enum saa7164_buffer_flags {
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SAA7164_BUFFER_UNDEFINED = 0,
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SAA7164_BUFFER_FREE,
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SAA7164_BUFFER_BUSY,
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SAA7164_BUFFER_FULL
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};
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enum saa7164_unit_type {
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SAA7164_UNIT_UNDEFINED = 0,
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SAA7164_UNIT_DIGITAL_DEMODULATOR,
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SAA7164_UNIT_ANALOG_DEMODULATOR,
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SAA7164_UNIT_TUNER,
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SAA7164_UNIT_EEPROM,
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SAA7164_UNIT_ZILOG_IRBLASTER,
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SAA7164_UNIT_ENCODER,
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};
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/* The PCIe bridge doesn't grant direct access to i2c.
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* Instead, you address i2c devices using a uniqely
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* allocated 'unitid' value via a messaging API. This
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* is a problem. The kernel and existing demod/tuner
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* drivers expect to talk 'i2c', so we have to maintain
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* a translation layer, and a series of functions to
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* convert i2c bus + device address into a unit id.
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*/
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struct saa7164_unit {
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enum saa7164_unit_type type;
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u8 id;
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char *name;
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enum saa7164_i2c_bus_nr i2c_bus_nr;
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u8 i2c_bus_addr;
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u8 i2c_reg_len;
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};
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struct saa7164_board {
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char *name;
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enum port_t porta, portb;
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enum {
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SAA7164_CHIP_UNDEFINED = 0,
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SAA7164_CHIP_REV2,
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SAA7164_CHIP_REV3,
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} chiprev;
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struct saa7164_unit unit[SAA7164_MAX_UNITS];
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};
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struct saa7164_subid {
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u16 subvendor;
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u16 subdevice;
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u32 card;
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};
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struct saa7164_fw_status {
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/* RISC Core details */
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u32 status;
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u32 mode;
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u32 spec;
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u32 inst;
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u32 cpuload;
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u32 remainheap;
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/* Firmware version */
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u32 version;
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u32 major;
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u32 sub;
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u32 rel;
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u32 buildnr;
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};
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struct saa7164_dvb {
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struct mutex lock;
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struct dvb_adapter adapter;
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struct dvb_frontend *frontend;
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struct dvb_demux demux;
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struct dmxdev dmxdev;
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struct dmx_frontend fe_hw;
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struct dmx_frontend fe_mem;
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struct dvb_net net;
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int feeding;
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};
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struct saa7164_i2c {
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struct saa7164_dev *dev;
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enum saa7164_i2c_bus_nr nr;
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/* I2C I/O */
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struct i2c_adapter i2c_adap;
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struct i2c_algo_bit_data i2c_algo;
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struct i2c_client i2c_client;
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u32 i2c_rc;
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};
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struct saa7164_tsport;
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struct saa7164_buffer {
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struct list_head list;
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u32 nr;
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struct saa7164_tsport *port;
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/* Hardware Specific */
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/* PCI Memory allocations */
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enum saa7164_buffer_flags flags; /* Free, Busy, Full */
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/* A block of page align PCI memory */
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u32 pci_size; /* PCI allocation size in bytes */
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u64 *cpu; /* Virtual address */
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dma_addr_t dma; /* Physical address */
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/* A page table that splits the block into a number of entries */
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u32 pt_size; /* PCI allocation size in bytes */
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u64 *pt_cpu; /* Virtual address */
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dma_addr_t pt_dma; /* Physical address */
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};
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struct saa7164_tsport {
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struct saa7164_dev *dev;
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int nr;
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enum port_t type;
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struct saa7164_dvb dvb;
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/* HW related stream parameters */
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tmHWStreamParameters_t hw_streamingparams;
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/* DMA configuration values, is seeded during initialization */
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tmComResDMATermDescrHeader_t hwcfg;
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/* hardware specific registers */
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u32 bufcounter;
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u32 pitch;
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u32 bufsize;
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u32 bufoffset;
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u32 bufptr32l;
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u32 bufptr32h;
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u64 bufptr64;
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u32 numpte; /* Number of entries in array, only valid in head */
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struct mutex dmaqueue_lock;
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struct mutex dummy_dmaqueue_lock;
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struct saa7164_buffer dmaqueue;
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struct saa7164_buffer dummy_dmaqueue;
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};
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struct saa7164_dev {
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struct list_head devlist;
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atomic_t refcount;
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/* pci stuff */
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struct pci_dev *pci;
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unsigned char pci_rev, pci_lat;
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int pci_bus, pci_slot;
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u32 __iomem *lmmio;
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u8 __iomem *bmmio;
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u32 __iomem *lmmio2;
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u8 __iomem *bmmio2;
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int pci_irqmask;
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/* board details */
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int nr;
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int hwrevision;
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u32 board;
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char name[32];
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/* firmware status */
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struct saa7164_fw_status fw_status;
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tmComResHWDescr_t hwdesc;
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tmComResInterfaceDescr_t intfdesc;
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tmComResBusDescr_t busdesc;
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tmComResBusInfo_t bus;
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/* Interrupt status and ack registers */
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u32 int_status;
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u32 int_ack;
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struct cmd cmds[SAA_CMD_MAX_MSG_UNITS];
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struct mutex lock;
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/* I2c related */
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struct saa7164_i2c i2c_bus[3];
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/* Transport related */
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struct saa7164_tsport ts1, ts2;
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/* Deferred command/api interrupts handling */
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struct work_struct workcmd;
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};
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extern struct list_head saa7164_devlist;
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extern unsigned int waitsecs;
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/* ----------------------------------------------------------- */
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/* saa7164-core.c */
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void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);
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void saa7164_dumphex16(struct saa7164_dev *dev, u8 *buf, int len);
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void saa7164_getfirmwarestatus(struct saa7164_dev *dev);
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u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);
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/* ----------------------------------------------------------- */
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/* saa7164-fw.c */
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int saa7164_downloadfirmware(struct saa7164_dev *dev);
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/* ----------------------------------------------------------- */
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/* saa7164-i2c.c */
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extern int saa7164_i2c_register(struct saa7164_i2c *bus);
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extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);
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extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus,
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unsigned int cmd, void *arg);
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/* ----------------------------------------------------------- */
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/* saa7164-bus.c */
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int saa7164_bus_setup(struct saa7164_dev *dev);
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void saa7164_bus_dump(struct saa7164_dev *dev);
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int saa7164_bus_set(struct saa7164_dev *dev, tmComResInfo_t* msg, void *buf);
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int saa7164_bus_get(struct saa7164_dev *dev, tmComResInfo_t* msg,
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void *buf, int peekonly);
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/* ----------------------------------------------------------- */
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/* saa7164-cmd.c */
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int saa7164_cmd_send(struct saa7164_dev *dev,
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u8 id, tmComResCmd_t command, u16 controlselector,
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u16 size, void *buf);
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void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);
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int saa7164_irq_dequeue(struct saa7164_dev *dev);
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/* ----------------------------------------------------------- */
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/* saa7164-api.c */
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int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);
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int saa7164_api_enum_subdevs(struct saa7164_dev *dev);
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int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
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u32 datalen, u8 *data);
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int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,
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u32 datalen, u8 *data);
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int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
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u32 datalen, u8 *data);
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int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
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int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
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int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
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int saa7164_api_transition_port(struct saa7164_tsport *port, u8 mode);
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/* ----------------------------------------------------------- */
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/* saa7164-cards.c */
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extern struct saa7164_board saa7164_boards[];
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extern const unsigned int saa7164_bcount;
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extern struct saa7164_subid saa7164_subids[];
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extern const unsigned int saa7164_idcount;
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extern void saa7164_card_list(struct saa7164_dev *dev);
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extern void saa7164_gpio_setup(struct saa7164_dev *dev);
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extern void saa7164_card_setup(struct saa7164_dev *dev);
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extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);
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extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);
|
||
|
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extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);
|
||
|
|
|
||
|
|
/* ----------------------------------------------------------- */
|
||
|
|
/* saa7164-dvb.c */
|
||
|
|
extern int saa7164_dvb_register(struct saa7164_tsport *port);
|
||
|
|
extern int saa7164_dvb_unregister(struct saa7164_tsport *port);
|
||
|
|
|
||
|
|
/* ----------------------------------------------------------- */
|
||
|
|
/* saa7164-buffer.c */
|
||
|
|
extern struct saa7164_buffer *saa7164_buffer_alloc(struct saa7164_tsport *port,
|
||
|
|
u32 len);
|
||
|
|
extern int saa7164_buffer_dealloc(struct saa7164_tsport *port,
|
||
|
|
struct saa7164_buffer *buf);
|
||
|
|
|
||
|
|
/* ----------------------------------------------------------- */
|
||
|
|
|
||
|
|
extern unsigned int saa_debug;
|
||
|
|
#define dprintk(level, fmt, arg...)\
|
||
|
|
do { if (saa_debug & level)\
|
||
|
|
printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
#define log_warn(fmt, arg...)\
|
||
|
|
do { \
|
||
|
|
printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
#define log_err(fmt, arg...)\
|
||
|
|
do { \
|
||
|
|
printk(KERN_ERROR "%s: " fmt, dev->name, ## arg);\
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
#define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2))
|
||
|
|
#define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
|
||
|
|
|
||
|
|
|
||
|
|
#define saa7164_readb(reg) readl(dev->bmmio + (reg))
|
||
|
|
#define saa7164_writeb(reg, value) writel((value), dev->bmmio + (reg))
|
||
|
|
|