/* * Driver for the NXP SAA7164 PCIe bridge * * Copyright (c) 2009 Steven Toth * * 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 #include #include #include #include #include #include #include #include "compat.h" #include "saa7164-reg.h" #include "saa7164-types.h" #include #include #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_BOARD_HAUPPAUGE_HVR2250_3 8 #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; /* Interrupt status and ack registers */ u32 int_status; u32 int_ack; 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; extern unsigned int waitsecs; /* ----------------------------------------------------------- */ /* 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); int saa7164_irq_dequeue(struct saa7164_dev *dev); /* ----------------------------------------------------------- */ /* saa7164-api.c */ 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)) #if 0 #define saa7164_writel(reg, value) \ do { \ printk(KERN_ERR "writel(%x, %llx)\n", value, \ (u64)((u32)dev->lmmio + ((reg) >> 2))); \ writel((value), dev->lmmio + ((reg) >> 2)); \ } while (0) #endif #define saa7164_readb(reg) readl(dev->bmmio + (reg)) #define saa7164_writeb(reg, value) writel((value), dev->bmmio + (reg))