252 lines
6.4 KiB
C
252 lines
6.4 KiB
C
/* $NetBSD: pci_hades.c,v 1.5 2003/07/15 01:19:54 lukem Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1996 Leo Weppelman. All rights reserved.
|
|
* Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved.
|
|
* Copyright (c) 1994 Charles M. Hannum. 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Charles M. Hannum.
|
|
* 4. 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: pci_hades.c,v 1.5 2003/07/15 01:19:54 lukem Exp $");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcireg.h>
|
|
|
|
#include <machine/cpu.h>
|
|
#include <machine/iomap.h>
|
|
#include <machine/mfp.h>
|
|
#include <machine/bswap.h>
|
|
|
|
#include <atari/atari/device.h>
|
|
#include <atari/pci/pci_vga.h>
|
|
#include <atari/dev/grf_etreg.h>
|
|
|
|
int
|
|
pci_bus_maxdevs(pc, busno)
|
|
pci_chipset_tag_t pc;
|
|
int busno;
|
|
{
|
|
return (4);
|
|
}
|
|
|
|
static int pci_config_offset __P((pcitag_t));
|
|
|
|
/*
|
|
* Atari_init.c maps the config areas PAGE_SIZE bytes apart....
|
|
*/
|
|
static int pci_config_offset(tag)
|
|
pcitag_t tag;
|
|
{
|
|
int device;
|
|
|
|
device = (tag >> 11) & 0x1f;
|
|
return(device * PAGE_SIZE);
|
|
}
|
|
|
|
pcireg_t
|
|
pci_conf_read(pc, tag, reg)
|
|
pci_chipset_tag_t pc;
|
|
pcitag_t tag;
|
|
int reg;
|
|
{
|
|
u_long data;
|
|
|
|
data = *(u_long *)(pci_conf_addr + pci_config_offset(tag) + reg);
|
|
return (bswap32(data));
|
|
}
|
|
|
|
void
|
|
pci_conf_write(pc, tag, reg, data)
|
|
pci_chipset_tag_t pc;
|
|
pcitag_t tag;
|
|
int reg;
|
|
pcireg_t data;
|
|
{
|
|
*((u_long *)(pci_conf_addr + pci_config_offset(tag) + reg))
|
|
= bswap32(data);
|
|
}
|
|
|
|
/*
|
|
* The interrupt stuff is rather ugly. On the Hades, all interrupt lines
|
|
* for a slot are wired together and connected to IO 0,1,2 or 5 (slots:
|
|
* (0-3) on the TT-MFP. The Pci-config code initializes the irq. number
|
|
* to the slot position.
|
|
*/
|
|
static pci_intr_info_t iinfo[4] = { { -1 }, { -1 }, { -1 }, { -1 } };
|
|
|
|
static int iifun __P((int, int));
|
|
|
|
static int
|
|
iifun(slot, sr)
|
|
int slot;
|
|
int sr;
|
|
{
|
|
pci_intr_info_t *iinfo_p;
|
|
int s;
|
|
|
|
iinfo_p = &iinfo[slot];
|
|
|
|
/*
|
|
* Disable the interrupts
|
|
*/
|
|
MFP2->mf_imrb &= ~iinfo_p->imask;
|
|
|
|
if ((sr & PSL_IPL) >= (iinfo_p->ipl & PSL_IPL)) {
|
|
/*
|
|
* We're running at a too high priority now.
|
|
*/
|
|
add_sicallback((si_farg)iifun, (void*)slot, 0);
|
|
}
|
|
else {
|
|
s = splx(iinfo_p->ipl);
|
|
(void) (iinfo_p->ifunc)(iinfo_p->iarg);
|
|
splx(s);
|
|
|
|
/*
|
|
* Re-enable interrupts after handling
|
|
*/
|
|
MFP2->mf_imrb |= iinfo_p->imask;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void *
|
|
pci_intr_establish(pc, ih, level, ih_fun, ih_arg)
|
|
pci_chipset_tag_t pc;
|
|
pci_intr_handle_t ih;
|
|
int level;
|
|
int (*ih_fun) __P((void *));
|
|
void *ih_arg;
|
|
{
|
|
pci_intr_info_t *iinfo_p;
|
|
struct intrhand *ihand;
|
|
int slot;
|
|
|
|
slot = ih;
|
|
iinfo_p = &iinfo[slot];
|
|
|
|
if (iinfo_p->ipl > 0)
|
|
panic("pci_intr_establish: interrupt was already established");
|
|
|
|
ihand = intr_establish((slot == 3) ? 23 : 16 + slot, USER_VEC, 0,
|
|
(hw_ifun_t)iifun, (void *)slot);
|
|
if (ihand != NULL) {
|
|
iinfo_p->ipl = level;
|
|
iinfo_p->imask = (slot == 3) ? 0x80 : (0x01 << slot);
|
|
iinfo_p->ifunc = ih_fun;
|
|
iinfo_p->iarg = ih_arg;
|
|
iinfo_p->ihand = ihand;
|
|
|
|
/*
|
|
* Enable (unmask) the interrupt
|
|
*/
|
|
MFP2->mf_imrb |= iinfo_p->imask;
|
|
MFP2->mf_ierb |= iinfo_p->imask;
|
|
return(iinfo_p);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
pci_intr_disestablish(pc, cookie)
|
|
pci_chipset_tag_t pc;
|
|
void *cookie;
|
|
{
|
|
pci_intr_info_t *iinfo_p = (pci_intr_info_t *)cookie;
|
|
|
|
if (iinfo->ipl < 0)
|
|
panic("pci_intr_disestablish: interrupt was not established");
|
|
|
|
MFP2->mf_imrb &= ~iinfo->imask;
|
|
MFP2->mf_ierb &= ~iinfo->imask;
|
|
(void) intr_disestablish(iinfo_p->ihand);
|
|
iinfo_p->ipl = -1;
|
|
}
|
|
|
|
/*
|
|
* XXX: Why are we repeating this everywhere! (Leo)
|
|
*/
|
|
#define PCI_LINMEMBASE 0x0e000000
|
|
|
|
static u_char crt_tab[] = {
|
|
0x5f, 0x4f, 0x50, 0x82, 0x55, 0x81, 0xbf, 0x1f,
|
|
0x00, 0x4f, 0x0d, 0x0e, 0x00, 0x00, 0x00, 0x00,
|
|
0x9c, 0x8e, 0x8f, 0x28, 0x1f, 0x96, 0xb9, 0xa3,
|
|
0xff };
|
|
|
|
static u_char seq_tab[] = {
|
|
0x03, 0x00, 0x03, 0x00, 0x02, 0x00, 0x00, 0x00 };
|
|
|
|
static u_char attr_tab[] = {
|
|
0x0c, 0x00, 0x0f, 0x08, 0x00, 0x00, 0x00, 0x00 };
|
|
|
|
static u_char gdc_tab[] = {
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x0e, 0x00, 0xff };
|
|
|
|
void
|
|
ati_vga_init(pc, tag, id, ba, fb)
|
|
pci_chipset_tag_t pc;
|
|
pcitag_t tag;
|
|
int id;
|
|
volatile u_char *ba;
|
|
u_char *fb;
|
|
{
|
|
int i, csr;
|
|
|
|
/* Turn on the card */
|
|
pci_conf_write(pc, tag, PCI_MAPREG_START, PCI_LINMEMBASE);
|
|
csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
|
|
csr |= (PCI_COMMAND_MEM_ENABLE|PCI_COMMAND_IO_ENABLE);
|
|
csr |= PCI_COMMAND_MASTER_ENABLE;
|
|
pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, csr);
|
|
|
|
/*
|
|
* Make sure we're allowed to write all crt-registers and reload them.
|
|
*/
|
|
WCrt(ba, CRT_ID_END_VER_RETR, (RCrt(ba, CRT_ID_END_VER_RETR) & 0x7f));
|
|
|
|
for (i = 0; i < 0x18; i++)
|
|
WCrt(ba, i, crt_tab[i]);
|
|
for (i = 0; i < 8; i++)
|
|
WSeq(ba, i, seq_tab[i]);
|
|
for (i = 0; i < 9; i++)
|
|
WGfx(ba, i, gdc_tab[i]);
|
|
for (i = 0x10; i < 0x18; i++)
|
|
WAttr(ba, i, attr_tab[i - 0x10]);
|
|
WAttr(ba, 0x20, 0);
|
|
}
|