Reviewed by: se

Submitted by:	wolf (Wolfgang Stanglmeier)
Files moved here from sys/i386/pci, since they are meant to be
architecture independent.

1 files changed, 242 insertions, 0 deletions

diff --git a/sys/pci/pcivar.h b/sys/pci/pcivar.h
new file mode 100644
index 0000000..b0712db
--- /dev/null
+++ b/sys/pci/pcivar.h
@@ -0,0 +1,242 @@
+/**************************************************************************
+**
+**  $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