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|
/*
* Driver for the NXP SAA7164 PCIe bridge
*
* Copyright (c) 2009 Steven Toth <stoth@kernellabs.com>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
Driver architecture
*******************
saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c
| : Standard Linux driver framework for creating
| : exposing and managing interfaces to the rest
| : of the kernel or userland. Also uses _fw.c to load
| : firmware direct into the PCIe bus, bypassing layers.
V
saa7164_api..() : Translate kernel specific functions/features
| : into command buffers.
V
saa7164_cmd..() : Manages the flow of command packets on/off,
| : the bus. Deal with bus errors, timeouts etc.
V
saa7164_bus..() : Manage a read/write memory ring buffer in the
| : PCIe Address space.
|
| saa7164_fw...() : Load any frimware
| | : direct into the device
V V
<- ----------------- PCIe address space -------------------- ->
*/
#include <linux/pci.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/kdev_t.h>
#include <media/tuner.h>
#include <media/tveeprom.h>
#include <media/videobuf-dma-sg.h>
#include <media/videobuf-dvb.h>
#include "saa7164-reg.h"
#include "saa7164-types.h"
#include <linux/version.h>
#include <linux/mutex.h>
#define SAA7164_MAXBOARDS 8
#define UNSET (-1U)
#define SAA7164_BOARD_NOAUTO UNSET
#define SAA7164_BOARD_UNKNOWN 0
#define SAA7164_BOARD_UNKNOWN_REV2 1
#define SAA7164_BOARD_UNKNOWN_REV3 2
#define SAA7164_BOARD_HAUPPAUGE_HVR2250 3
#define SAA7164_BOARD_HAUPPAUGE_HVR2200 4
#define SAA7164_BOARD_HAUPPAUGE_HVR2200_2 5
#define SAA7164_BOARD_HAUPPAUGE_HVR2200_3 6
#define SAA7164_BOARD_HAUPPAUGE_HVR2250_2 7
#define SAA7164_MAX_UNITS 8
#define SAA7164_TS_NUMBER_OF_LINES 312
#define SAA7164_PT_ENTRIES 16 /* (312 * 188) / 4096 */
#define DBGLVL_FW 4
#define DBGLVL_DVB 8
#define DBGLVL_I2C 16
#define DBGLVL_API 32
#define DBGLVL_CMD 64
#define DBGLVL_BUS 128
#define DBGLVL_IRQ 256
#define DBGLVL_BUF 512
enum port_t {
SAA7164_MPEG_UNDEFINED = 0,
SAA7164_MPEG_DVB,
};
enum saa7164_i2c_bus_nr {
SAA7164_I2C_BUS_0 = 0,
SAA7164_I2C_BUS_1,
SAA7164_I2C_BUS_2,
};
enum saa7164_buffer_flags {
SAA7164_BUFFER_UNDEFINED = 0,
SAA7164_BUFFER_FREE,
SAA7164_BUFFER_BUSY,
SAA7164_BUFFER_FULL
};
enum saa7164_unit_type {
SAA7164_UNIT_UNDEFINED = 0,
SAA7164_UNIT_DIGITAL_DEMODULATOR,
SAA7164_UNIT_ANALOG_DEMODULATOR,
SAA7164_UNIT_TUNER,
SAA7164_UNIT_EEPROM,
SAA7164_UNIT_ZILOG_IRBLASTER,
SAA7164_UNIT_ENCODER,
};
/* The PCIe bridge doesn't grant direct access to i2c.
* Instead, you address i2c devices using a uniqely
* allocated 'unitid' value via a messaging API. This
* is a problem. The kernel and existing demod/tuner
* drivers expect to talk 'i2c', so we have to maintain
* a translation layer, and a series of functions to
* convert i2c bus + device address into a unit id.
*/
struct saa7164_unit {
enum saa7164_unit_type type;
u8 id;
char *name;
enum saa7164_i2c_bus_nr i2c_bus_nr;
u8 i2c_bus_addr;
u8 i2c_reg_len;
};
struct saa7164_board {
char *name;
enum port_t porta, portb;
enum {
SAA7164_CHIP_UNDEFINED = 0,
SAA7164_CHIP_REV2,
SAA7164_CHIP_REV3,
} chiprev;
struct saa7164_unit unit[SAA7164_MAX_UNITS];
};
struct saa7164_subid {
u16 subvendor;
u16 subdevice;
u32 card;
};
struct saa7164_fw_status {
/* RISC Core details */
u32 status;
u32 mode;
u32 spec;
u32 inst;
u32 cpuload;
u32 remainheap;
/* Firmware version */
u32 version;
u32 major;
u32 sub;
u32 rel;
u32 buildnr;
};
struct saa7164_dvb {
struct mutex lock;
struct dvb_adapter adapter;
struct dvb_frontend *frontend;
struct dvb_demux demux;
struct dmxdev dmxdev;
struct dmx_frontend fe_hw;
struct dmx_frontend fe_mem;
struct dvb_net net;
int feeding;
};
struct saa7164_i2c {
struct saa7164_dev *dev;
enum saa7164_i2c_bus_nr nr;
/* I2C I/O */
struct i2c_adapter i2c_adap;
struct i2c_algo_bit_data i2c_algo;
struct i2c_client i2c_client;
u32 i2c_rc;
};
struct saa7164_tsport;
struct saa7164_buffer {
struct list_head list;
u32 nr;
struct saa7164_tsport *port;
/* Hardware Specific */
/* PCI Memory allocations */
enum saa7164_buffer_flags flags; /* Free, Busy, Full */
/* A block of page align PCI memory */
u32 pci_size; /* PCI allocation size in bytes */
u64 *cpu; /* Virtual address */
dma_addr_t dma; /* Physical address */
/* A page table that splits the block into a number of entries */
u32 pt_size; /* PCI allocation size in bytes */
u64 *pt_cpu; /* Virtual address */
dma_addr_t pt_dma; /* Physical address */
};
struct saa7164_tsport {
struct saa7164_dev *dev;
int nr;
enum port_t type;
struct saa7164_dvb dvb;
/* HW related stream parameters */
tmHWStreamParameters_t hw_streamingparams;
/* DMA configuration values, is seeded during initialization */
tmComResDMATermDescrHeader_t hwcfg;
/* hardware specific registers */
u32 bufcounter;
u32 pitch;
u32 bufsize;
u32 bufoffset;
u32 bufptr32l;
u32 bufptr32h;
u64 bufptr64;
u32 numpte; /* Number of entries in array, only valid in head */
struct mutex dmaqueue_lock;
struct mutex dummy_dmaqueue_lock;
struct saa7164_buffer dmaqueue;
struct saa7164_buffer dummy_dmaqueue;
};
struct saa7164_dev {
struct list_head devlist;
atomic_t refcount;
/* pci stuff */
struct pci_dev *pci;
unsigned char pci_rev, pci_lat;
int pci_bus, pci_slot;
u32 __iomem *lmmio;
u8 __iomem *bmmio;
u32 __iomem *lmmio2;
u8 __iomem *bmmio2;
int pci_irqmask;
/* board details */
int nr;
int hwrevision;
u32 board;
char name[32];
/* firmware status */
struct saa7164_fw_status fw_status;
tmComResHWDescr_t hwdesc;
tmComResInterfaceDescr_t intfdesc;
tmComResBusDescr_t busdesc;
tmComResBusInfo_t bus;
/* TODO: Urgh, remove volatiles */
volatile u32 *InterruptStatus;
volatile u32 *InterruptAck;
struct cmd cmds[SAA_CMD_MAX_MSG_UNITS];
struct mutex lock;
/* I2c related */
struct saa7164_i2c i2c_bus[3];
/* Transport related */
struct saa7164_tsport ts1, ts2;
/* Deferred command/api interrupts handling */
struct work_struct workcmd;
};
extern struct list_head saa7164_devlist;
/* ----------------------------------------------------------- */
/* saa7164-core.c */
void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);
void saa7164_dumphex16(struct saa7164_dev *dev, u8 *buf, int len);
void saa7164_getfirmwarestatus(struct saa7164_dev *dev);
u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);
/* ----------------------------------------------------------- */
/* saa7164-fw.c */
int saa7164_downloadfirmware(struct saa7164_dev *dev);
/* ----------------------------------------------------------- */
/* saa7164-i2c.c */
extern int saa7164_i2c_register(struct saa7164_i2c *bus);
extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);
extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus,
unsigned int cmd, void *arg);
/* ----------------------------------------------------------- */
/* saa7164-bus.c */
int saa7164_bus_setup(struct saa7164_dev *dev);
void saa7164_bus_dump(struct saa7164_dev *dev);
int saa7164_bus_set(struct saa7164_dev *dev, tmComResInfo_t* msg, void *buf);
int saa7164_bus_get(struct saa7164_dev *dev, tmComResInfo_t* msg,
void *buf, int peekonly);
/* ----------------------------------------------------------- */
/* saa7164-cmd.c */
int saa7164_cmd_send(struct saa7164_dev *dev,
u8 id, tmComResCmd_t command, u16 controlselector,
u16 size, void *buf);
void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);
/* ----------------------------------------------------------- */
/* saa7164-api.c */
int saa7164_api_test(struct saa7164_dev *dev);
int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);
int saa7164_api_enum_subdevs(struct saa7164_dev *dev);
int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
u32 datalen, u8 *data);
int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,
u32 datalen, u8 *data);
int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
u32 datalen, u8 *data);
int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
int saa7164_api_transition_port(struct saa7164_tsport *port, u8 mode);
/* ----------------------------------------------------------- */
/* saa7164-cards.c */
extern struct saa7164_board saa7164_boards[];
extern const unsigned int saa7164_bcount;
extern struct saa7164_subid saa7164_subids[];
extern const unsigned int saa7164_idcount;
extern void saa7164_card_list(struct saa7164_dev *dev);
extern void saa7164_gpio_setup(struct saa7164_dev *dev);
extern void saa7164_card_setup(struct saa7164_dev *dev);
extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);
extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);
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 debug;
#define dprintk(level, fmt, arg...)\
do { if (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))
|
