1 #include "base/Stream.h"
2
3 #include "host-common/GoldfishDma.h"
4 #include "host-common/DmaMap.h"
5
6 #include "host-common/address_space_device.h"
7 #include "host-common/android_pipe_host.h"
8
android_goldfish_dma_add_buffer(void * pipe,uint64_t guest_paddr,uint64_t sz)9 static void android_goldfish_dma_add_buffer(void* pipe, uint64_t guest_paddr, uint64_t sz) {
10 android::DmaMap::get()->addBuffer(pipe, guest_paddr, sz);
11 }
12
android_goldfish_dma_remove_buffer(uint64_t guest_paddr)13 static void android_goldfish_dma_remove_buffer(uint64_t guest_paddr) {
14 android::DmaMap::get()->removeBuffer(guest_paddr);
15 }
16
android_goldfish_dma_get_host_addr(uint64_t guest_paddr)17 static void* android_goldfish_dma_get_host_addr(uint64_t guest_paddr) {
18 void *host_ptr;
19
20 host_ptr = get_address_space_device_control_ops()->get_host_ptr(guest_paddr);
21 if (host_ptr) {
22 return host_ptr;
23 }
24
25 return android::DmaMap::get()->getHostAddr(guest_paddr);
26 }
27
android_goldfish_dma_invalidate_host_mappings()28 static void android_goldfish_dma_invalidate_host_mappings() {
29 android::DmaMap::get()->invalidateHostMappings();
30 }
31
android_goldfish_dma_unlock(uint64_t guest_paddr)32 static void android_goldfish_dma_unlock(uint64_t guest_paddr) {
33 void* hwpipe = android::DmaMap::get()->getPipeInstance(guest_paddr);
34
35 if (hwpipe) {
36 /*
37 * DMA regions allocated with AddressSpaceHostMemoryAllocatorContext
38 * don't have hwpipe associated with them.
39 */
40 android_pipe_host_signal_wake(hwpipe, PIPE_WAKE_UNLOCK_DMA);
41 }
42 }
43
android_goldfish_dma_reset_host_mappings()44 static void android_goldfish_dma_reset_host_mappings() {
45 android::DmaMap::get()->resetHostMappings();
46 }
47
android_goldfish_dma_save_mappings(android::base::Stream * stream)48 static void android_goldfish_dma_save_mappings(android::base::Stream* stream) {
49 android::DmaMap::get()->save(stream);
50 }
51
android_goldfish_dma_load_mappings(android::base::Stream * stream)52 static void android_goldfish_dma_load_mappings(android::base::Stream* stream) {
53 android::DmaMap::get()->load(stream);
54 }
55
56 const GoldfishDmaOps android_goldfish_dma_ops = {
57 .add_buffer = android_goldfish_dma_add_buffer,
58 .remove_buffer = android_goldfish_dma_remove_buffer,
59 .get_host_addr = android_goldfish_dma_get_host_addr,
60 .invalidate_host_mappings = android_goldfish_dma_invalidate_host_mappings,
61 .unlock = android_goldfish_dma_unlock,
62 .reset_host_mappings = android_goldfish_dma_reset_host_mappings,
63 .save_mappings = android_goldfish_dma_save_mappings,
64 .load_mappings = android_goldfish_dma_load_mappings,
65 };
66