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dma: eliminate DMAContext

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The DMAContext is a simple pointer to an AddressSpace that is now always
already available.  Make everyone hold the address space directly,
and clean up the DMA API to use the AddressSpace directly.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-04-10 18:15:49 +02:00
parent 96478592a9
commit df32fd1c9f
23 changed files with 117 additions and 148 deletions
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17
include/hw/pci/pci.h
View file

@ -242,7 +242,6 @@ struct PCIDevice {
PCIIORegion io_regions[PCI_NUM_REGIONS];
AddressSpace bus_master_as;
MemoryRegion bus_master_enable_region;
DMAContext *dma;
/* do not access the following fields */
PCIConfigReadFunc *config_read;
@ -639,15 +638,15 @@ static inline uint32_t pci_config_size(const PCIDevice *d)
}
/* DMA access functions */
static inline DMAContext *pci_dma_context(PCIDevice *dev)
static inline AddressSpace *pci_get_address_space(PCIDevice *dev)
{
return dev->dma;
return &dev->bus_master_as;
}
static inline int pci_dma_rw(PCIDevice *dev, dma_addr_t addr,
void *buf, dma_addr_t len, DMADirection dir)
{
dma_memory_rw(pci_dma_context(dev), addr, buf, len, dir);
dma_memory_rw(pci_get_address_space(dev), addr, buf, len, dir);
return 0;
}
@ -667,12 +666,12 @@ static inline int pci_dma_write(PCIDevice *dev, dma_addr_t addr,
static inline uint##_bits##_t ld##_l##_pci_dma(PCIDevice *dev, \
dma_addr_t addr) \
{ \
return ld##_l##_dma(pci_dma_context(dev), addr); \
return ld##_l##_dma(pci_get_address_space(dev), addr); \
} \
static inline void st##_s##_pci_dma(PCIDevice *dev, \
dma_addr_t addr, uint##_bits##_t val) \
{ \
st##_s##_dma(pci_dma_context(dev), addr, val); \
st##_s##_dma(pci_get_address_space(dev), addr, val); \
}
PCI_DMA_DEFINE_LDST(ub, b, 8);
@ -690,20 +689,20 @@ static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr,
{
void *buf;
buf = dma_memory_map(pci_dma_context(dev), addr, plen, dir);
buf = dma_memory_map(pci_get_address_space(dev), addr, plen, dir);
return buf;
}
static inline void pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len,
DMADirection dir, dma_addr_t access_len)
{
dma_memory_unmap(pci_dma_context(dev), buffer, len, dir, access_len);
dma_memory_unmap(pci_get_address_space(dev), buffer, len, dir, access_len);
}
static inline void pci_dma_sglist_init(QEMUSGList *qsg, PCIDevice *dev,
int alloc_hint)
{
qemu_sglist_init(qsg, alloc_hint, pci_dma_context(dev));
qemu_sglist_init(qsg, alloc_hint, pci_get_address_space(dev));
}
extern const VMStateDescription vmstate_pci_device;