Reviewed by: se

Submitted by:	wolf (Wolfgang Stanglmeier)
Files moved here from sys/i386/pci, since they are meant to be
architecture independent.
This commit is contained in:
Stefan Eßer 1995-02-01 22:56:55 +00:00
parent cfba24a39b
commit 5e70573817
3 changed files with 574 additions and 0 deletions

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sys/dev/pci/pcivar.h Normal file
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/**************************************************************************
**
** $Id: pcireg.h,v 1.2 1994/11/02 23:47:14 se Exp $
**
** Declarations for pci device 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_VAR_H__
#define __PCI_VAR_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 following functions are provided for the device driver
** to read/write the configuration space.
**
** 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.
**
**-----------------------------------------------------------------
*/
u_long pci_conf_read (pcici_t tag, u_long reg );
void pci_conf_write (pcici_t tag, u_long reg, u_long data);
/*-----------------------------------------------------------------
**
** The pci driver structure.
**
** name: The short device name.
**
** 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_device {
char* pd_name;
char* (*pd_probe ) (pcici_t tag, pcidi_t type);
void (*pd_attach) (pcici_t tag, int unit);
u_long *pd_count;
};
/*-----------------------------------------------------------------
**
** This table includes pointers to all pci device drivers.
** It should be generated by the linker.
**
**-----------------------------------------------------------------
*/
extern struct linker_set pcidevice_set;
/*-----------------------------------------------------------------
**
** 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];
};
/*-----------------------------------------------------------------
**
** 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);
#endif

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sys/pci/pcibus.h Normal file
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/**************************************************************************
**
** $Id: pcibus.h,v 1.2 1994/11/02 23:47:14 se Exp $
**
** Declarations for pci bus driver.
**
** 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_BUS_H__
#define __PCI_BUS_H__
/*-----------------------------------------------------------------
**
** The following functions are provided by the pci bios.
** They are used only by the pci configuration.
**
** pb_mode():
** Probes for a pci system.
** Returns 1 or 2 for pci configuration mechanism.
** Returns 0 if no pci system.
**
** pb_tag():
** 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.
**
** pb_read():
** Read a long word from the pci configuration space.
** Requires a tag (from pcitag) and the register
** number (should be a long word aligned one).
**
** pb_write():
** Writes a long word to the pci configuration space.
** Requires a tag (from pcitag), the register number
** (should be a long word aligned one), and a value.
**
** pb_regint():
** Register an interupt handler for a pci device.
** Requires a tag (from pcitag), the handler function
** and it's argument, and an interupt mask.
**
**-----------------------------------------------------------------
*/
struct pcibus {
char *pb_name;
int (*pb_mode ) (void);
pcici_t (*pb_tag ) (u_char bus, u_char device, u_char func);
u_long (*pb_read ) (pcici_t tag, u_long reg);
void (*pb_write ) (pcici_t tag, u_long reg, u_long data);
int (*pb_regint) (pcici_t tag, int(*func)(), void*arg, unsigned*mp);
};
/*
** The following structure should be generated by the driver
*/
extern struct linker_set pcibus_set;
#endif

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sys/pci/pcivar.h Normal file
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/**************************************************************************
**
** $Id: pcireg.h,v 1.2 1994/11/02 23:47:14 se Exp $
**
** Declarations for pci device 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_VAR_H__
#define __PCI_VAR_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 following functions are provided for the device driver
** to read/write the configuration space.
**
** 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.
**
**-----------------------------------------------------------------
*/
u_long pci_conf_read (pcici_t tag, u_long reg );
void pci_conf_write (pcici_t tag, u_long reg, u_long data);
/*-----------------------------------------------------------------
**
** The pci driver structure.
**
** name: The short device name.
**
** 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_device {
char* pd_name;
char* (*pd_probe ) (pcici_t tag, pcidi_t type);
void (*pd_attach) (pcici_t tag, int unit);
u_long *pd_count;
};
/*-----------------------------------------------------------------
**
** This table includes pointers to all pci device drivers.
** It should be generated by the linker.
**
**-----------------------------------------------------------------
*/
extern struct linker_set pcidevice_set;
/*-----------------------------------------------------------------
**
** 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];
};
/*-----------------------------------------------------------------
**
** 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);
#endif