99af02e3b6
The only remaining user was the code that allocates bounce pages for armv4 busdma. It's not clear why bounce pages would need uncached memory, but if that ever changes, kmem_alloc_attr() would be the way to get it.
162 lines
4.0 KiB
C
162 lines
4.0 KiB
C
/*-
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* Copyright (c) 2011 Damjan Marion.
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* Copyright (c) 1994-1998 Mark Brinicombe.
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* Copyright (c) 1994 Brini.
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* All rights reserved.
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*
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* This code is derived from software written for Brini by Mark Brinicombe
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: FreeBSD: //depot/projects/arm/src/sys/arm/mv/mv_machdep.c
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*/
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#include "opt_ddb.h"
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#include "opt_platform.h"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#define _ARM32_BUS_DMA_PRIVATE
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/bus.h>
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#include <machine/machdep.h>
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#include <dev/fdt/fdt_common.h>
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/* FIXME move to tegrareg.h */
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#define TEGRA2_BASE 0xE0000000 /* KVM base for peripherials */
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#define TEGRA2_UARTA_VA_BASE 0xE0006000
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#define TEGRA2_UARTA_PA_BASE 0x70006000
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#define TEGRA2_CLK_RST_PA_BASE 0x60006000
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#define TEGRA2_CLK_RST_OSC_FREQ_DET_REG 0x58
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#define TEGRA2_CLK_RST_OSC_FREQ_DET_STAT_REG 0x5C
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#define OSC_FREQ_DET_TRIG (1<<31)
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#define OSC_FREQ_DET_BUSY (1<<31)
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#if 0
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static int
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tegra2_osc_freq_detect(void)
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{
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bus_space_handle_t bsh;
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uint32_t c;
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uint32_t r=0;
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int i=0;
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struct {
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uint32_t val;
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uint32_t freq;
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} freq_det_cnts[] = {
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{ 732, 12000000 },
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{ 794, 13000000 },
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{1172, 19200000 },
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{1587, 26000000 },
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{ -1, 0 },
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};
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printf("Measuring...\n");
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bus_space_map(fdtbus_bs_tag,TEGRA2_CLK_RST_PA_BASE, 0x1000, 0, &bsh);
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bus_space_write_4(fdtbus_bs_tag, bsh, TEGRA2_CLK_RST_OSC_FREQ_DET_REG,
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OSC_FREQ_DET_TRIG | 1 );
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do {} while (bus_space_read_4(fdtbus_bs_tag, bsh,
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TEGRA2_CLK_RST_OSC_FREQ_DET_STAT_REG) & OSC_FREQ_DET_BUSY);
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c = bus_space_read_4(fdtbus_bs_tag, bsh, TEGRA2_CLK_RST_OSC_FREQ_DET_STAT_REG);
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while (freq_det_cnts[i].val > 0) {
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if (((freq_det_cnts[i].val - 3) < c) && (c < (freq_det_cnts[i].val + 3)))
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r = freq_det_cnts[i].freq;
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i++;
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}
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printf("c=%u r=%u\n",c,r );
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bus_space_free(fdtbus_bs_tag, bsh, 0x1000);
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return r;
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}
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#endif
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vm_offset_t
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initarm_lastaddr(void)
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{
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if (fdt_immr_addr(TEGRA2_BASE) != 0) /* FIXME ???? */
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while (1);
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return (fdt_immr_va);
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}
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void
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initarm_gpio_init(void)
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{
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}
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void
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initarm_late_init(void)
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{
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}
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#define FDT_DEVMAP_MAX (1 + 2 + 1 + 1) /* FIXME */
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static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
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{ 0, 0, 0, 0, 0, }
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};
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/*
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* Construct pmap_devmap[] with DT-derived config data.
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*/
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int
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platform_devmap_init(void)
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{
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int i = 0;
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fdt_devmap[i].pd_va = 0xe0000000;
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fdt_devmap[i].pd_pa = 0x70000000;
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fdt_devmap[i].pd_size = 0x100000;
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fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
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fdt_devmap[i].pd_cache = PTE_NOCACHE;
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i++;
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pmap_devmap_bootstrap_table = &fdt_devmap[0];
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return (0);
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}
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struct arm32_dma_range *
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bus_dma_get_range(void)
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{
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return (NULL);
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}
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int
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bus_dma_get_range_nb(void)
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{
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return (0);
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}
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