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arm_coreboot: Support DMA.

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This is needed to support USB and some other busses.
This commit is contained in:
Vladimir Serbinenko 2017-05-08 22:06:04 +02:00
parent 656c3b0d7f
commit 265292f2b0
8 changed files with 155 additions and 25 deletions
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7
include/grub/cache.h
View file

@ -34,15 +34,14 @@ void EXPORT_FUNC(grub_arch_sync_caches) (void *address, grub_size_t len);
#endif
#ifndef GRUB_MACHINE_EMU
#ifdef _mips
void EXPORT_FUNC(grub_arch_sync_dma_caches) (volatile void *address,
grub_size_t len);
#else
#if defined (__i386__) || defined (__x86_64__)
static inline void
grub_arch_sync_dma_caches (volatile void *address __attribute__ ((unused)),
grub_size_t len __attribute__ ((unused)))
{
}
#else
void EXPORT_FUNC(grub_arch_sync_dma_caches) (volatile void *address, grub_size_t len);
#endif
#endif

44
include/grub/dma.h Normal file
View file

@ -0,0 +1,44 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_DMA_H
#define GRUB_DMA_H 1
struct grub_pci_dma_chunk;
struct grub_pci_dma_chunk *EXPORT_FUNC(grub_memalign_dma32) (grub_size_t align,
grub_size_t size);
void EXPORT_FUNC(grub_dma_free) (struct grub_pci_dma_chunk *ch);
volatile void *EXPORT_FUNC(grub_dma_get_virt) (struct grub_pci_dma_chunk *ch);
grub_uint32_t EXPORT_FUNC(grub_dma_get_phys) (struct grub_pci_dma_chunk *ch);
static inline void *
grub_dma_phys2virt (grub_uint32_t phys, struct grub_pci_dma_chunk *chunk)
{
return ((grub_uint8_t *) grub_dma_get_virt (chunk)
+ (phys - grub_dma_get_phys (chunk)));
}
static inline grub_uint32_t
grub_dma_virt2phys (volatile void *virt, struct grub_pci_dma_chunk *chunk)
{
return (((grub_uint8_t *) virt - (grub_uint8_t *) grub_dma_get_virt (chunk))
+ grub_dma_get_phys (chunk));
}
#endif

22
include/grub/pci.h
View file

@ -142,27 +142,7 @@ grub_pci_address_t EXPORT_FUNC(grub_pci_make_address) (grub_pci_device_t dev,
void EXPORT_FUNC(grub_pci_iterate) (grub_pci_iteratefunc_t hook,
void *hook_data);
struct grub_pci_dma_chunk;
struct grub_pci_dma_chunk *EXPORT_FUNC(grub_memalign_dma32) (grub_size_t align,
grub_size_t size);
void EXPORT_FUNC(grub_dma_free) (struct grub_pci_dma_chunk *ch);
volatile void *EXPORT_FUNC(grub_dma_get_virt) (struct grub_pci_dma_chunk *ch);
grub_uint32_t EXPORT_FUNC(grub_dma_get_phys) (struct grub_pci_dma_chunk *ch);
static inline void *
grub_dma_phys2virt (grub_uint32_t phys, struct grub_pci_dma_chunk *chunk)
{
return ((grub_uint8_t *) grub_dma_get_virt (chunk)
+ (phys - grub_dma_get_phys (chunk)));
}
static inline grub_uint32_t
grub_dma_virt2phys (volatile void *virt, struct grub_pci_dma_chunk *chunk)
{
return (((grub_uint8_t *) virt - (grub_uint8_t *) grub_dma_get_virt (chunk))
+ grub_dma_get_phys (chunk));
}
#include <grub/dma.h>
grub_uint8_t
EXPORT_FUNC (grub_pci_find_capability) (grub_pci_device_t dev, grub_uint8_t cap);