31144d9976
indicating an unhandled "command". ERESTART is -1, which can lead to confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been placed at -4. No ioctl code should now return -1 anywhere. The ioctl() system call is now properly restartable.
442 lines
11 KiB
C
442 lines
11 KiB
C
/* $NetBSD: pxg.c,v 1.10 2002/03/17 19:41:02 atatat Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Andrew Doran.
|
|
*
|
|
* 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 the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 FOUNDATION OR CONTRIBUTORS
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Driver for DEC PixelStamp graphics accelerators with onboard SRAM and
|
|
* Intel i860 co-processor (PMAG-D, E and F).
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: pxg.c,v 1.10 2002/03/17 19:41:02 atatat Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/callout.h>
|
|
#include <sys/proc.h>
|
|
|
|
#if defined(pmax)
|
|
#include <mips/cpuregs.h>
|
|
#elif defined(alpha)
|
|
#include <alpha/alpha_cpu.h>
|
|
#endif
|
|
|
|
#include <machine/autoconf.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/cons.h>
|
|
|
|
#include <dev/wscons/wsconsio.h>
|
|
#include <dev/wscons/wsdisplayvar.h>
|
|
|
|
#include <dev/ic/bt459reg.h>
|
|
|
|
#include <dev/tc/tcvar.h>
|
|
#include <dev/tc/sticreg.h>
|
|
#include <dev/tc/sticio.h>
|
|
#include <dev/tc/sticvar.h>
|
|
#include <dev/tc/pxgvar.h>
|
|
|
|
#define PXG_STIC_POLL_OFFSET 0x000000 /* STIC DMA poll space */
|
|
#define PXG_STAMP_OFFSET 0x0c0000 /* pixelstamp space on STIC */
|
|
#define PXG_STIC_OFFSET 0x180000 /* STIC registers */
|
|
#define PXG_SRAM_OFFSET 0x200000 /* 128 or 256kB of SRAM */
|
|
#define PXG_HOST_INTR_OFFSET 0x280000 /* i860 host interrupt */
|
|
#define PXG_COPROC_INTR_OFFSET 0x2c0000 /* i860 coprocessor interrupt */
|
|
#define PXG_VDAC_OFFSET 0x300000 /* VDAC registers (bt459) */
|
|
#define PXG_VDAC_RESET_OFFSET 0x340000 /* VDAC reset register */
|
|
#define PXG_ROM_OFFSET 0x380000 /* ROM code */
|
|
#define PXG_I860_START_OFFSET 0x380000 /* i860 start register */
|
|
#define PXG_I860_RESET_OFFSET 0x3c0000 /* i860 stop register */
|
|
|
|
void pxg_attach(struct device *, struct device *, void *);
|
|
int pxg_intr(void *);
|
|
int pxg_match(struct device *, struct cfdata *, void *);
|
|
|
|
void pxg_init(struct stic_info *);
|
|
int pxg_ioctl(struct stic_info *, u_long, caddr_t, int, struct proc *);
|
|
u_int32_t *pxg_pbuf_get(struct stic_info *);
|
|
int pxg_pbuf_post(struct stic_info *, u_int32_t *);
|
|
int pxg_probe_planes(struct stic_info *);
|
|
int pxg_probe_sram(struct stic_info *);
|
|
|
|
void pxg_cnattach(tc_addr_t);
|
|
|
|
struct pxg_softc {
|
|
struct device pxg_dv;
|
|
struct stic_info *pxg_si;
|
|
};
|
|
|
|
struct cfattach pxg_ca = {
|
|
sizeof(struct pxg_softc), pxg_match, pxg_attach
|
|
};
|
|
|
|
static const char *pxg_types[] = {
|
|
"PMAG-DA ",
|
|
"PMAG-FA ",
|
|
"PMAG-FB ",
|
|
"PMAGB-FA",
|
|
"PMAGB-FB",
|
|
};
|
|
|
|
int
|
|
pxg_match(struct device *parent, struct cfdata *match, void *aux)
|
|
{
|
|
struct tc_attach_args *ta;
|
|
int i;
|
|
|
|
ta = aux;
|
|
|
|
for (i = 0; i < sizeof(pxg_types) / sizeof(pxg_types[0]); i++)
|
|
if (strncmp(pxg_types[i], ta->ta_modname, TC_ROM_LLEN) == 0)
|
|
return (1);
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
pxg_attach(struct device *parent, struct device *self, void *aux)
|
|
{
|
|
struct stic_info *si;
|
|
struct tc_attach_args *ta;
|
|
struct pxg_softc *pxg;
|
|
int console;
|
|
|
|
pxg = (struct pxg_softc *)self;
|
|
ta = (struct tc_attach_args *)aux;
|
|
|
|
if (ta->ta_addr == stic_consinfo.si_slotbase) {
|
|
si = &stic_consinfo;
|
|
console = 1;
|
|
} else {
|
|
if (stic_consinfo.si_slotbase == NULL)
|
|
si = &stic_consinfo;
|
|
else {
|
|
si = malloc(sizeof(*si), M_DEVBUF, M_NOWAIT|M_ZERO);
|
|
}
|
|
si->si_slotbase = ta->ta_addr;
|
|
pxg_init(si);
|
|
console = 0;
|
|
}
|
|
|
|
pxg->pxg_si = si;
|
|
si->si_dv = self;
|
|
tc_intr_establish(parent, ta->ta_cookie, IPL_TTY, pxg_intr, si);
|
|
|
|
printf(": %d plane, %dx%d stamp, %dkB SRAM\n", si->si_depth,
|
|
si->si_stampw, si->si_stamph, (int)si->si_buf_size >> 10);
|
|
|
|
stic_attach(self, si, console);
|
|
|
|
#ifdef notyet
|
|
/* Load the co-processor "firmware". */
|
|
for (i = 0; i < sizeof(pxg_fwsegs) / sizeof(pxg_fwsegs[0]); i++)
|
|
pxg_load_fwseg(si, &pxg_fwsegs[i]);
|
|
|
|
/* Start the i860. */
|
|
si->si_slotbase[PXG_I860_START_OFFSET >> 2] = 1;
|
|
tc_wmb();
|
|
tc_syncbus();
|
|
DELAY(40000);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
pxg_cnattach(tc_addr_t addr)
|
|
{
|
|
struct stic_info *si;
|
|
|
|
si = &stic_consinfo;
|
|
si->si_slotbase = addr;
|
|
pxg_init(si);
|
|
stic_cnattach(si);
|
|
}
|
|
|
|
void
|
|
pxg_init(struct stic_info *si)
|
|
{
|
|
volatile u_int32_t *slot;
|
|
caddr_t kva;
|
|
|
|
kva = (caddr_t)si->si_slotbase;
|
|
|
|
si->si_vdac = (u_int32_t *)(kva + PXG_VDAC_OFFSET);
|
|
si->si_vdac_reset = (u_int32_t *)(kva + PXG_VDAC_RESET_OFFSET);
|
|
si->si_stic = (volatile struct stic_regs *)(kva + PXG_STIC_OFFSET);
|
|
si->si_stamp = (u_int32_t *)(kva + PXG_STAMP_OFFSET);
|
|
si->si_buf = (u_int32_t *)(kva + PXG_SRAM_OFFSET);
|
|
si->si_buf_phys = STIC_KSEG_TO_PHYS(si->si_buf);
|
|
si->si_buf_size = pxg_probe_sram(si);
|
|
si->si_disptype = WSDISPLAY_TYPE_PXG;
|
|
si->si_sxc = (volatile struct stic_xcomm *)si->si_buf;
|
|
|
|
si->si_pbuf_get = pxg_pbuf_get;
|
|
si->si_pbuf_post = pxg_pbuf_post;
|
|
si->si_ioctl = pxg_ioctl;
|
|
|
|
/* Disable the co-processor. */
|
|
slot = (volatile u_int32_t *)kva;
|
|
slot[PXG_I860_RESET_OFFSET >> 2] = 0;
|
|
tc_wmb();
|
|
slot[PXG_HOST_INTR_OFFSET >> 2] = 0;
|
|
tc_wmb();
|
|
tc_syncbus();
|
|
DELAY(40000);
|
|
|
|
/* XXX Check for a second PixelStamp. */
|
|
if (((si->si_stic->sr_modcl & 0x600) >> 9) > 1)
|
|
si->si_depth = 24;
|
|
else
|
|
si->si_depth = pxg_probe_planes(si);
|
|
|
|
stic_init(si);
|
|
}
|
|
|
|
int
|
|
pxg_probe_sram(struct stic_info *si)
|
|
{
|
|
volatile u_int32_t *a, *b;
|
|
|
|
a = (volatile u_int32_t *)si->si_slotbase + (PXG_SRAM_OFFSET >> 2);
|
|
b = a + (0x20000 >> 2);
|
|
*a = 4321;
|
|
*b = 1234;
|
|
tc_mb();
|
|
return ((*a == *b) ? 0x20000 : 0x40000);
|
|
}
|
|
|
|
int
|
|
pxg_probe_planes(struct stic_info *si)
|
|
{
|
|
volatile u_int32_t *vdac;
|
|
int id;
|
|
|
|
/*
|
|
* For the visible framebuffer (# 0), we can cheat and use the VDAC
|
|
* ID.
|
|
*/
|
|
vdac = si->si_vdac;
|
|
vdac[BT459_REG_ADDR_LOW] = (BT459_IREG_ID & 0xff) |
|
|
((BT459_IREG_ID & 0xff) << 8) | ((BT459_IREG_ID & 0xff) << 16);
|
|
vdac[BT459_REG_ADDR_HIGH] = ((BT459_IREG_ID & 0xff00) >> 8) |
|
|
(BT459_IREG_ID & 0xff00) | ((BT459_IREG_ID & 0xff00) << 8);
|
|
tc_mb();
|
|
id = vdac[BT459_REG_IREG_DATA] & 0x00ffffff;
|
|
|
|
/* 3 VDACs */
|
|
if (id == 0x004a4a4a)
|
|
return (24);
|
|
|
|
/* 1 VDAC */
|
|
if ((id & 0xff0000) == 0x4a0000 || (id & 0x00ff00) == 0x004a00 ||
|
|
(id & 0x0000ff) == 0x00004a)
|
|
return (8);
|
|
|
|
/* XXX Assume 8 planes. */
|
|
printf("pxg_probe_planes: invalid VDAC ID %x\n", id);
|
|
return (8);
|
|
}
|
|
|
|
int
|
|
pxg_intr(void *cookie)
|
|
{
|
|
#ifdef notyet
|
|
struct stic_info *si;
|
|
volatile struct stic_regs *sr;
|
|
volatile u_int32_t *hi;
|
|
u_int32_t state;
|
|
int it;
|
|
|
|
si = cookie;
|
|
sr = si->si_stic;
|
|
state = sr->sr_ipdvint;
|
|
hi = (volatile u_int32_t *)si->si_slotbase +
|
|
(PXG_HOST_INTR_OFFSET / sizeof(u_int32_t));
|
|
|
|
/* Clear the interrupt condition */
|
|
it = hi[0] & 15;
|
|
hi[0] = 0;
|
|
tc_wmb();
|
|
hi[2] = 0;
|
|
tc_wmb();
|
|
|
|
switch (it) {
|
|
case 3:
|
|
sr->sr_ipdvint = STIC_INT_V_WE | STIC_INT_V_EN;
|
|
tc_wmb();
|
|
stic_flush(si);
|
|
break;
|
|
}
|
|
#else
|
|
printf("pxg_intr: how did this happen?\n");
|
|
#endif
|
|
return (1);
|
|
}
|
|
|
|
u_int32_t *
|
|
pxg_pbuf_get(struct stic_info *si)
|
|
{
|
|
u_long off;
|
|
|
|
si->si_pbuf_select ^= STIC_PACKET_SIZE;
|
|
off = si->si_pbuf_select + STIC_XCOMM_SIZE;
|
|
return ((u_int32_t *)((caddr_t)si->si_buf + off));
|
|
}
|
|
|
|
int
|
|
pxg_pbuf_post(struct stic_info *si, u_int32_t *buf)
|
|
{
|
|
volatile u_int32_t *poll, junk;
|
|
volatile struct stic_regs *sr;
|
|
u_long v;
|
|
int c;
|
|
|
|
sr = si->si_stic;
|
|
|
|
/* Get address of poll register for this buffer. */
|
|
v = ((u_long)buf - (u_long)si->si_buf) >> 9;
|
|
poll = (volatile u_int32_t *)((caddr_t)si->si_slotbase + v);
|
|
|
|
/*
|
|
* Read the poll register and make sure the stamp wants to accept
|
|
* our packet. This read will initiate the DMA. Don't wait for
|
|
* ever, just in case something's wrong.
|
|
*/
|
|
tc_mb();
|
|
|
|
for (c = STAMP_RETRIES; c != 0; c--) {
|
|
if ((sr->sr_ipdvint & STIC_INT_P) != 0) {
|
|
sr->sr_ipdvint = STIC_INT_P_WE;
|
|
tc_wmb();
|
|
junk = *poll;
|
|
return (0);
|
|
}
|
|
DELAY(STAMP_DELAY);
|
|
}
|
|
|
|
/* STIC has lost the plot, punish it. */
|
|
stic_reset(si);
|
|
return (-1);
|
|
}
|
|
|
|
int
|
|
pxg_ioctl(struct stic_info *si, u_long cmd, caddr_t data, int flag,
|
|
struct proc *p)
|
|
{
|
|
struct stic_xinfo *sxi;
|
|
volatile u_int32_t *ptr;
|
|
int rv, s;
|
|
|
|
switch (cmd) {
|
|
case STICIO_START860:
|
|
case STICIO_RESET860:
|
|
if ((rv = suser(p->p_ucred, &p->p_acflag)) != 0)
|
|
return (rv);
|
|
if (si->si_dispmode != WSDISPLAYIO_MODE_MAPPED)
|
|
return (EBUSY);
|
|
ptr = (volatile u_int32_t *)si->si_slotbase;
|
|
break;
|
|
}
|
|
|
|
switch (cmd) {
|
|
case STICIO_START860:
|
|
s = spltty();
|
|
ptr[PXG_I860_START_OFFSET >> 2] = 1;
|
|
tc_wmb();
|
|
splx(s);
|
|
rv = 0;
|
|
break;
|
|
|
|
case STICIO_RESET860:
|
|
s = spltty();
|
|
ptr[PXG_I860_RESET_OFFSET >> 2] = 0;
|
|
tc_wmb();
|
|
splx(s);
|
|
rv = 0;
|
|
break;
|
|
|
|
case STICIO_GXINFO:
|
|
sxi = (struct stic_xinfo *)data;
|
|
sxi->sxi_unit = si->si_unit;
|
|
sxi->sxi_stampw = si->si_stampw;
|
|
sxi->sxi_stamph = si->si_stamph;
|
|
sxi->sxi_buf_size = si->si_buf_size;
|
|
sxi->sxi_buf_phys = 0;
|
|
sxi->sxi_buf_pktoff = STIC_XCOMM_SIZE;
|
|
sxi->sxi_buf_pktcnt = 2;
|
|
sxi->sxi_buf_imgoff = STIC_XCOMM_SIZE + STIC_PACKET_SIZE * 2;
|
|
rv = 0;
|
|
break;
|
|
|
|
default:
|
|
rv = EPASSTHROUGH;
|
|
break;
|
|
}
|
|
|
|
return (rv);
|
|
}
|
|
|
|
#ifdef notyet
|
|
void
|
|
pxg_load_fwseg(struct stic_info *si, struct pxg_fwseg *pfs)
|
|
{
|
|
const u_int32_t *src;
|
|
u_int32_t *dst;
|
|
u_int left, i;
|
|
|
|
dst = (u_int32_t *)((caddr_t)si->si_buf + pfs->pfs_addr);
|
|
src = pfs->pfs_data;
|
|
|
|
for (left = pfs->pfs_compsize; left != 0; left -= 4) {
|
|
if (src[0] == PXGFW_RLE_MAGIC) {
|
|
for (i = src[2]; i != 0; i--)
|
|
*dst++ = src[1];
|
|
src += 3;
|
|
} else {
|
|
*dst++ = src[0];
|
|
src++;
|
|
}
|
|
}
|
|
|
|
if (src == NULL)
|
|
memset(dst, 0, pfs->pfs_realsize);
|
|
}
|
|
#endif
|