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Use px_probe_sram() to figure out ringbuffer size instead of defaulting to 

the minimum value of 128KB (useful only for PMAG-F).
This commit is contained in:
ad 1999-09-25 14:45:21 +00:00
parent 146df5502f
commit 2d7488c2c5
1 changed files with 5 additions and 5 deletions
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10
sys/arch/pmax/dev/px.c
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@ -1,4 +1,4 @@
/* $NetBSD: px.c,v 1.17 1999/09/24 00:37:52 nisimura Exp $ */ /* $NetBSD: px.c,v 1.18 1999/09/25 14:45:21 ad Exp $ */
/*- /*-
* Copyright (c) 1999 The NetBSD Foundation, Inc. * Copyright (c) 1999 The NetBSD Foundation, Inc.
@ -43,7 +43,7 @@
#endif #endif
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: px.c,v 1.17 1999/09/24 00:37:52 nisimura Exp $"); __KERNEL_RCSID(0, "$NetBSD: px.c,v 1.18 1999/09/25 14:45:21 ad Exp $");
/* /*
* px.c: driver for the DEC TURBOchannel 2D and 3D accelerated framebuffers * px.c: driver for the DEC TURBOchannel 2D and 3D accelerated framebuffers
@ -388,7 +388,7 @@ px_init(fi, slotbase, unit, console)
bufpa = MIPS_KSEG0_TO_PHYS(slotbase + PXG_SRAM_OFFSET); bufpa = MIPS_KSEG0_TO_PHYS(slotbase + PXG_SRAM_OFFSET);
pxi->pxi_rbuf = (int *)MIPS_PHYS_TO_KSEG0(bufpa); pxi->pxi_rbuf = (int *)MIPS_PHYS_TO_KSEG0(bufpa);
pxi->pxi_rbuf_phys = bufpa; pxi->pxi_rbuf_phys = bufpa;
pxi->pxi_rbuf_size = 128*1024; /* XXX might have 256KB */ pxi->pxi_rbuf_size = px_probe_sram(pxi);
} }
/* Get a font and lock. If we're not the console, we don't care */ /* Get a font and lock. If we're not the console, we don't care */
@ -574,7 +574,7 @@ px_probe_planes(pxi, buf)
/* /*
* Figure out how much SRAM the PXG has. * Figure out how much SRAM the PXG has: 128KB or 256KB.
*/ */
static int static int
px_probe_sram(pxi) px_probe_sram(pxi)
@ -588,7 +588,7 @@ px_probe_sram(pxi)
*a = 4321; *a = 4321;
*b = 1234; *b = 1234;
tc_wmb(); tc_wmb();
return ((*a == *b) ? 0x20000 : 0x40000); return ((*a == *b) ? 0x20000 : 0x40000);
} }