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