mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
424 lines
13 KiB
C
424 lines
13 KiB
C
/**************************************************************************
|
||
**
|
||
** $Id: pcireg.h,v 1.1 1994/10/12 02:25:03 se Exp $
|
||
**
|
||
** Declarations for pci bus drivers.
|
||
**
|
||
** 386bsd / FreeBSD
|
||
**
|
||
**-------------------------------------------------------------------------
|
||
**
|
||
** Copyright (c) 1994 Wolfgang Stanglmeier. All rights reserved.
|
||
**
|
||
** Redistribution and use in source and binary forms, with or without
|
||
** modification, are permitted provided that the following conditions
|
||
** are met:
|
||
** 1. Redistributions of source code must retain the above copyright
|
||
** notice, this list of conditions and the following disclaimer.
|
||
** 2. Redistributions in binary form must reproduce the above copyright
|
||
** notice, this list of conditions and the following disclaimer in the
|
||
** documentation and/or other materials provided with the distribution.
|
||
** 3. The name of the author may not be used to endorse or promote products
|
||
** derived from this software without specific prior written permission.
|
||
**
|
||
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
**
|
||
***************************************************************************
|
||
*/
|
||
|
||
#ifndef __PCI_REG_H__
|
||
#define __PCI_REG_H__
|
||
|
||
/*-----------------------------------------------------------------
|
||
**
|
||
** main pci initialization function.
|
||
** called at boot time from autoconf.c
|
||
**
|
||
**-----------------------------------------------------------------
|
||
*/
|
||
|
||
void pci_configure (void);
|
||
|
||
/*-----------------------------------------------------------------
|
||
**
|
||
** The pci configuration id describes a pci device on the bus.
|
||
** It is constructed from: bus, device & function numbers.
|
||
**
|
||
**-----------------------------------------------------------------
|
||
*/
|
||
|
||
typedef union {
|
||
u_long cfg1;
|
||
struct {
|
||
u_char enable;
|
||
u_char forward;
|
||
u_short port;
|
||
} cfg2;
|
||
} pcici_t;
|
||
|
||
/*-----------------------------------------------------------------
|
||
**
|
||
** Each pci device has an unique device id.
|
||
** It is used to find a matching driver.
|
||
**
|
||
**-----------------------------------------------------------------
|
||
*/
|
||
|
||
typedef u_long pcidi_t;
|
||
|
||
/*-----------------------------------------------------------------
|
||
**
|
||
** The pci driver structure.
|
||
**
|
||
** probe: Checks if the driver can support a device
|
||
** with this type. The tag may be used to get
|
||
** more info with pci_read_conf(). See below.
|
||
** It returns a string with the devices name,
|
||
** or a NULL pointer, if the driver cannot
|
||
** support this device.
|
||
**
|
||
** attach: Allocate a control structure and prepare
|
||
** it. This function may use the pci mapping
|
||
** functions. See below.
|
||
** (configuration id) or type.
|
||
**
|
||
** count: A pointer to a unit counter.
|
||
** It's used by the pci configurator to
|
||
** allocate unit numbers.
|
||
**
|
||
**-----------------------------------------------------------------
|
||
*/
|
||
|
||
struct pci_driver {
|
||
char* (*probe ) (pcici_t tag, pcidi_t type);
|
||
void (*attach) (pcici_t tag, int unit);
|
||
u_long *count;
|
||
};
|
||
|
||
/*-----------------------------------------------------------------
|
||
**
|
||
** The pci-devconf interface.
|
||
**
|
||
**-----------------------------------------------------------------
|
||
*/
|
||
|
||
struct pci_info {
|
||
u_short pi_bus;
|
||
u_short pi_device;
|
||
};
|
||
|
||
#define PCI_EXT_CONF_LEN (16)
|
||
#define PCI_EXTERNAL_LEN (sizeof(struct pci_externalize_buffer))
|
||
|
||
struct pci_externalize_buffer {
|
||
struct pci_info peb_pci_info;
|
||
u_long peb_config[PCI_EXT_CONF_LEN];
|
||
};
|
||
|
||
|
||
/*-----------------------------------------------------------------
|
||
**
|
||
** Per device structure.
|
||
**
|
||
** An array of this structure should be created by the
|
||
** config utility and live in "ioconf.c".
|
||
**
|
||
** At the moment it's created by hand and lives in
|
||
** pci_config.c
|
||
**
|
||
** pd_driver:
|
||
** a pointer to the driver structure.
|
||
**
|
||
** pd_name:
|
||
** the name of the devices which are supported
|
||
** by this driver for kernel messages.
|
||
**
|
||
** pd_flags:
|
||
** for further study.
|
||
**
|
||
**-----------------------------------------------------------------
|
||
*/
|
||
|
||
struct pci_device {
|
||
struct
|
||
pci_driver* pd_driver;
|
||
const char * pd_name;
|
||
int pd_flags;
|
||
};
|
||
|
||
/*-----------------------------------------------------------------
|
||
**
|
||
** This table should be generated in file "ioconf.c"
|
||
** by the config program.
|
||
** It is used at boot time by the configuration function
|
||
** pci_configure()
|
||
**
|
||
**-----------------------------------------------------------------
|
||
*/
|
||
|
||
extern struct pci_device pci_devtab[];
|
||
|
||
/*-----------------------------------------------------------------
|
||
**
|
||
** Map a pci device to physical and virtual memory.
|
||
**
|
||
** The va and pa addresses are "in/out" parameters.
|
||
** If they are 0 on entry, the function assigns an address.
|
||
**
|
||
** Entry selects the register in the pci configuration
|
||
** space, which supplies the size of the region, and
|
||
** receives the physical address.
|
||
**
|
||
** If there is any error, a message is written, and
|
||
** the function returns with zero.
|
||
** Else it returns with a value different to zero.
|
||
**
|
||
**-----------------------------------------------------------------
|
||
*/
|
||
|
||
int pci_map_mem (pcici_t tag, u_long entry, u_long * va, u_long * pa);
|
||
|
||
/*-----------------------------------------------------------------
|
||
**
|
||
** Map a pci device to an io port area.
|
||
**
|
||
** *pa is an "in/out" parameter.
|
||
** If it's 0 on entry, the function assigns an port number..
|
||
**
|
||
** Entry selects the register in the pci configuration
|
||
** space, which supplies the size of the region, and
|
||
** receives the port number.
|
||
**
|
||
** If there is any error, a message is written, and
|
||
** the function returns with zero.
|
||
** Else it returns with a value different to zero.
|
||
**
|
||
**-----------------------------------------------------------------
|
||
*/
|
||
|
||
int pci_map_port(pcici_t tag, u_long entry, u_short * pa);
|
||
|
||
/*-----------------------------------------------------------------
|
||
**
|
||
** Map a pci interrupt to an isa irq line,
|
||
** and enable the interrupt.
|
||
**
|
||
** func is the interrupt handler, arg is the argument
|
||
** to this function.
|
||
**
|
||
** The maskptr argument should be &bio_imask,
|
||
** &net_imask etc. or NULL.
|
||
**
|
||
** If there is any error, a message is written, and
|
||
** the function returns with zero.
|
||
** Else it returns with a value different to zero.
|
||
**
|
||
** A word of caution for FreeBSD 2.0:
|
||
**
|
||
** We use the register_intr() function.
|
||
**
|
||
** The interrupt line of the selected device is included
|
||
** into the supplied mask: after the corresponding splXXX
|
||
** this drivers interrupts are blocked.
|
||
**
|
||
** But in the interrupt handlers startup code ONLY
|
||
** the interrupt of the driver is blocked, and NOT
|
||
** all interrupts of the spl group.
|
||
**
|
||
** It may be required to additional block the group
|
||
** interrupts by splXXX() inside the interrupt handler.
|
||
**
|
||
** In pre 2.0 kernels we emulate the register_intr
|
||
** function. The emulating function blocks all interrupts
|
||
** of the group in the interrupt handler prefix code.
|
||
**
|
||
**-----------------------------------------------------------------
|
||
*/
|
||
|
||
int pci_map_int (pcici_t tag, int (*func)(), void* arg, unsigned * maskptr);
|
||
|
||
/*-----------------------------------------------------------------
|
||
**
|
||
** The following functions are provided by the pci bios.
|
||
** They are used only by the pci configuration.
|
||
**
|
||
** pci_conf_mode():
|
||
** Probes for a pci system.
|
||
** Returns 1 or 2 for pci configuration mechanism.
|
||
** Returns 0 if no pci system.
|
||
**
|
||
** pcitag():
|
||
** Gets a handle for accessing the pci configuration
|
||
** space.
|
||
** This handle is given to the mapping functions (see
|
||
** above) or to the read/write functions.
|
||
**
|
||
** pci_conf_read():
|
||
** Read a long word from the pci configuration space.
|
||
** Requires a tag (from pcitag) and the register
|
||
** number (should be a long word alligned one).
|
||
**
|
||
** pci_conf_write():
|
||
** Writes a long word to the pci configuration space.
|
||
** Requires a tag (from pcitag), the register number
|
||
** (should be a long word alligned one), and a value.
|
||
**
|
||
**-----------------------------------------------------------------
|
||
*/
|
||
|
||
int pci_conf_mode (void);
|
||
|
||
pcici_t pcitag (unsigned char bus,
|
||
unsigned char device,
|
||
unsigned char func);
|
||
|
||
u_long pci_conf_read (pcici_t tag, u_long reg );
|
||
void pci_conf_write (pcici_t tag, u_long reg, u_long data);
|
||
|
||
|
||
/*------------------------------------------------------------------
|
||
**
|
||
** Names for PCI configuration space registers.
|
||
**
|
||
** Copyright (c) 1994 Charles Hannum. All rights reserved.
|
||
**
|
||
**------------------------------------------------------------------
|
||
*/
|
||
|
||
/*
|
||
* Device identification register; contains a vendor ID and a device ID.
|
||
* We have little need to distinguish the two parts.
|
||
*/
|
||
#define PCI_ID_REG 0x00
|
||
|
||
/*
|
||
* Command and status register.
|
||
*/
|
||
#define PCI_COMMAND_STATUS_REG 0x04
|
||
|
||
#define PCI_COMMAND_IO_ENABLE 0x00000001
|
||
#define PCI_COMMAND_MEM_ENABLE 0x00000002
|
||
#define PCI_COMMAND_MASTER_ENABLE 0x00000004
|
||
#define PCI_COMMAND_SPECIAL_ENABLE 0x00000008
|
||
#define PCI_COMMAND_INVALIDATE_ENABLE 0x00000010
|
||
#define PCI_COMMAND_PALETTE_ENABLE 0x00000020
|
||
#define PCI_COMMAND_PARITY_ENABLE 0x00000040
|
||
#define PCI_COMMAND_STEPPING_ENABLE 0x00000080
|
||
#define PCI_COMMAND_SERR_ENABLE 0x00000100
|
||
#define PCI_COMMAND_BACKTOBACK_ENABLE 0x00000200
|
||
|
||
#define PCI_STATUS_BACKTOBACK_OKAY 0x00800000
|
||
#define PCI_STATUS_PARITY_ERROR 0x01000000
|
||
#define PCI_STATUS_DEVSEL_FAST 0x00000000
|
||
#define PCI_STATUS_DEVSEL_MEDIUM 0x02000000
|
||
#define PCI_STATUS_DEVSEL_SLOW 0x04000000
|
||
#define PCI_STATUS_DEVSEL_MASK 0x06000000
|
||
#define PCI_STATUS_TARGET_TARGET_ABORT 0x08000000
|
||
#define PCI_STATUS_MASTER_TARGET_ABORT 0x10000000
|
||
#define PCI_STATUS_MASTER_ABORT 0x20000000
|
||
#define PCI_STATUS_SPECIAL_ERROR 0x40000000
|
||
#define PCI_STATUS_PARITY_DETECT 0x80000000
|
||
|
||
/*
|
||
* Class register; defines basic type of device.
|
||
*/
|
||
#define PCI_CLASS_REG 0x08
|
||
|
||
#define PCI_CLASS_MASK 0xff000000
|
||
#define PCI_SUBCLASS_MASK 0x00ff0000
|
||
|
||
/* base classes */
|
||
#define PCI_CLASS_PREHISTORIC 0x00000000
|
||
#define PCI_CLASS_MASS_STORAGE 0x01000000
|
||
#define PCI_CLASS_NETWORK 0x02000000
|
||
#define PCI_CLASS_DISPLAY 0x03000000
|
||
#define PCI_CLASS_MULTIMEDIA 0x04000000
|
||
#define PCI_CLASS_MEMORY 0x05000000
|
||
#define PCI_CLASS_BRIDGE 0x06000000
|
||
#define PCI_CLASS_UNDEFINED 0xff000000
|
||
|
||
/* 0x00 prehistoric subclasses */
|
||
#define PCI_SUBCLASS_PREHISTORIC_MISC 0x00000000
|
||
#define PCI_SUBCLASS_PREHISTORIC_VGA 0x00010000
|
||
|
||
/* 0x01 mass storage subclasses */
|
||
#define PCI_SUBCLASS_MASS_STORAGE_SCSI 0x00000000
|
||
#define PCI_SUBCLASS_MASS_STORAGE_IDE 0x00010000
|
||
#define PCI_SUBCLASS_MASS_STORAGE_FLOPPY 0x00020000
|
||
#define PCI_SUBCLASS_MASS_STORAGE_IPI 0x00030000
|
||
#define PCI_SUBCLASS_MASS_STORAGE_MISC 0x00800000
|
||
|
||
/* 0x02 network subclasses */
|
||
#define PCI_SUBCLASS_NETWORK_ETHERNET 0x00000000
|
||
#define PCI_SUBCLASS_NETWORK_TOKENRING 0x00010000
|
||
#define PCI_SUBCLASS_NETWORK_FDDI 0x00020000
|
||
#define PCI_SUBCLASS_NETWORK_MISC 0x00800000
|
||
|
||
/* 0x03 display subclasses */
|
||
#define PCI_SUBCLASS_DISPLAY_VGA 0x00000000
|
||
#define PCI_SUBCLASS_DISPLAY_XGA 0x00010000
|
||
#define PCI_SUBCLASS_DISPLAY_MISC 0x00800000
|
||
|
||
/* 0x04 multimedia subclasses */
|
||
#define PCI_SUBCLASS_MULTIMEDIA_VIDEO 0x00000000
|
||
#define PCI_SUBCLASS_MULTIMEDIA_AUDIO 0x00010000
|
||
#define PCI_SUBCLASS_MULTIMEDIA_MISC 0x00800000
|
||
|
||
/* 0x05 memory subclasses */
|
||
#define PCI_SUBCLASS_MEMORY_RAM 0x00000000
|
||
#define PCI_SUBCLASS_MEMORY_FLASH 0x00010000
|
||
#define PCI_SUBCLASS_MEMORY_MISC 0x00800000
|
||
|
||
/* 0x06 bridge subclasses */
|
||
#define PCI_SUBCLASS_BRIDGE_HOST 0x00000000
|
||
#define PCI_SUBCLASS_BRIDGE_ISA 0x00010000
|
||
#define PCI_SUBCLASS_BRIDGE_EISA 0x00020000
|
||
#define PCI_SUBCLASS_BRIDGE_MC 0x00030000
|
||
#define PCI_SUBCLASS_BRIDGE_PCI 0x00040000
|
||
#define PCI_SUBCLASS_BRIDGE_PCMCIA 0x00050000
|
||
#define PCI_SUBCLASS_BRIDGE_MISC 0x00800000
|
||
|
||
/*
|
||
* Mapping registers
|
||
*/
|
||
#define PCI_MAP_REG_START 0x10
|
||
#define PCI_MAP_REG_END 0x28
|
||
|
||
#define PCI_MAP_MEMORY 0x00000000
|
||
#define PCI_MAP_IO 0x00000001
|
||
|
||
#define PCI_MAP_MEMORY_TYPE_32BIT 0x00000000
|
||
#define PCI_MAP_MEMORY_TYPE_32BIT_1M 0x00000002
|
||
#define PCI_MAP_MEMORY_TYPE_64BIT 0x00000004
|
||
#define PCI_MAP_MEMORY_TYPE_MASK 0x00000006
|
||
#define PCI_MAP_MEMORY_CACHABLE 0x00000008
|
||
#define PCI_MAP_MEMORY_ADDRESS_MASK 0xfffffff0
|
||
|
||
/*
|
||
* Interrupt configuration register
|
||
*/
|
||
#define PCI_INTERRUPT_REG 0x3c
|
||
|
||
#define PCI_INTERRUPT_PIN_MASK 0x0000ff00
|
||
#define PCI_INTERRUPT_PIN_EXTRACT(x) ((((x) & PCI_INTERRUPT_PIN_MASK) >> 8) & 0xff)
|
||
#define PCI_INTERRUPT_PIN_NONE 0x00
|
||
#define PCI_INTERRUPT_PIN_A 0x01
|
||
#define PCI_INTERRUPT_PIN_B 0x02
|
||
#define PCI_INTERRUPT_PIN_C 0x03
|
||
#define PCI_INTERRUPT_PIN_D 0x04
|
||
|
||
#define PCI_INTERRUPT_LINE_MASK 0x000000ff
|
||
#define PCI_INTERRUPT_LINE_EXTRACT(x) ((((x) & PCI_INTERRUPT_LINE_MASK) >> 0) & 0xff)
|
||
#define PCI_INTERRUPT_LINE_INSERT(x,v) (((x) & ~PCI_INTERRUPT_LINE_MASK) | ((v) << 0))
|
||
|
||
#endif /* __PCI_REG_H__ */
|