Re: Sun4/110 "Panic: Crazy Interrupts"
Julian Coleman <[email protected]>
| Newsgroups | gmane.os.netbsd.ports.sparc |
|---|---|
| Message-ID | <[email protected]> |
Hi, > Thank you, Julian! > > It doesn't seem to like compiling after this patch - I attached the > compiler output. Apologies - rushing to get it sent before travelling and I realise that I must have built the wrong tree. I've attached a new version. Looking in more detail at the colour map setup (bt_cmap) I'm not certain if that will cause a size fault too. However, I hope that we at least get the value of the P4 register and disable interrupts there. Regards, Julian --
cgfour.diff
(text/plain, 2.9 KB)
--- sys/arch/sparc/dev/cgfour.c.orig 2024-04-18 14:30:13.838093938 +0200
+++ sys/arch/sparc/dev/cgfour.c 2024-04-23 19:01:23.433488262 +0200
@@ -123,12 +123,35 @@
#include <dev/sun/pfourreg.h>
/* per-display variables */
+struct p4bt_regs {
+ u_char bt_addr[4];
+ u_int bt_cmap;
+ u_char bt_ctrl[4];
+ u_int bt_omap;
+};
+#define P4BT_INIT(bt) do { \
+ (bt)->bt_addr[3] = 0x06; /* command reg */ \
+ (bt)->bt_ctrl[3] = 0x73; /* overlay plane */ \
+ (bt)->bt_addr[3] = 0x04; /* read mask */ \
+ (bt)->bt_ctrl[3] = 0xff; /* color planes */ \
+} while(0)
+
+
+struct p4fbcontrol {
+ struct p4bt_regs fbc_dac;
+ u_char fbc_ctrl;
+ u_char fbc_status;
+ u_char fbc_cursor_start;
+ u_char fbc_cursor_end;
+ u_char fbc_vcontrol[12]; /* 12 bytes of video timing goo */
+};
+
struct cgfour_softc {
struct fbdevice sc_fb; /* frame buffer device */
bus_space_tag_t sc_bustag;
bus_addr_t sc_paddr; /* phys address for device mmap() */
- volatile struct fbcontrol *sc_fbc; /* Brooktree registers */
+ volatile struct p4fbcontrol *sc_fbc; /* Brooktree registers */
union bt_cmap sc_cmap; /* Brooktree color map */
};
@@ -216,7 +239,7 @@
union obio_attach_args *uoba = aux;
struct obio4_attach_args *oba = &uoba->uoba_oba4;
bus_space_handle_t bh;
- volatile struct bt_regs *bt;
+ volatile struct p4bt_regs *bt;
struct fbdevice *fb = &sc->sc_fb;
int ramsize, i, isconsole;
@@ -289,22 +312,22 @@
/* Map the Brooktree. */
if (bus_space_map(oba->oba_bustag,
oba->oba_paddr + PFOUR_COLOR_OFF_CMAP,
- sizeof(struct fbcontrol),
+ sizeof(struct p4fbcontrol),
BUS_SPACE_MAP_LINEAR,
&bh) != 0) {
printf("%s: cannot map control registers\n",
device_xname(self));
return;
}
- sc->sc_fbc = (volatile struct fbcontrol *)bh;
+ sc->sc_fbc = (volatile struct p4fbcontrol *)bh;
/* grab initial (current) color map */
bt = &sc->sc_fbc->fbc_dac;
- bt->bt_addr = 0;
+ bt->bt_addr[3] = 0;
for (i = 0; i < 256 * 3 / 4; i++)
((char *)&sc->sc_cmap)[i] = bt->bt_cmap >> 24;
- BT_INIT(bt, 24);
+ P4BT_INIT(bt);
#if 0 /* See above. */
if (isconsole) {
@@ -316,6 +339,10 @@
#endif /* 0 */
printf("\n");
+ /* Disable interrupts */
+printf("P4 register = 0x%04ux\n", (unsigned int) fb->fb_pfour);
+ *fb->fb_pfour &= ~(PFOUR_REG_INTEN);
+
/*
* Even though we're not using rconsole, we'd still like
* to notice if we're the console framebuffer.
@@ -486,14 +513,14 @@
static void
cgfourloadcmap(struct cgfour_softc *sc, int start, int ncolors)
{
- volatile struct bt_regs *bt;
+ volatile struct p4bt_regs *bt;
u_int *ip, i;
int count;
ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */
count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3;
bt = &sc->sc_fbc->fbc_dac;
- bt->bt_addr = BT_D4M4(start) << 24;
+ bt->bt_addr[3] = BT_D4M4(start);
while (--count >= 0) {
i = *ip++;
/* hardware that makes one want to pound boards with hammers */