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pci.cpp: devices can ask to be mapped before the others (nw)

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Will be used by the isa bridge in the southbridge.
This commit is contained in:
yz70s 2018-05-13 07:41:12 +02:00
parent 0fae49dc31
commit 18c91a773f
2 changed files with 14 additions and 3 deletions
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14
src/devices/machine/pci.cpp
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@ -540,10 +540,18 @@ void pci_bridge_device::reset_all_mappings()
void pci_bridge_device::map_device(uint64_t memory_window_start, uint64_t memory_window_end, uint64_t memory_offset, address_space *memory_space,
uint64_t io_window_start, uint64_t io_window_end, uint64_t io_offset, address_space *io_space)
{
for(int i = int(all_devices.size())-1; i>=0; i--)
const int count = int(all_devices.size()) - 1;
for(int i = count; i >= 0; i--)
if (all_devices[i] != this)
if (all_devices[i]->map_first())
all_devices[i]->map_device(memory_window_start, memory_window_end, memory_offset, memory_space,
io_window_start, io_window_end, io_offset, io_space);
for(int i = count; i>=0; i--)
if(all_devices[i] != this)
all_devices[i]->map_device(memory_window_start, memory_window_end, memory_offset, memory_space,
io_window_start, io_window_end, io_offset, io_space);
if (!all_devices[i]->map_first())
all_devices[i]->map_device(memory_window_start, memory_window_end, memory_offset, memory_space,
io_window_start, io_window_end, io_offset, io_space);
map_extra(memory_window_start, memory_window_end, memory_offset, memory_space,
io_window_start, io_window_end, io_offset, io_space);

3
src/devices/machine/pci.h
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@ -41,6 +41,9 @@ public:
virtual void map_extra(uint64_t memory_window_start, uint64_t memory_window_end, uint64_t memory_offset, address_space *memory_space,
uint64_t io_window_start, uint64_t io_window_end, uint64_t io_offset, address_space *io_space);
// Specify if this device must be mapped before all the others on the pci bus
virtual bool map_first() { return false; }
void map_config(uint8_t device, address_space *config_space);
virtual void config_map(address_map &map);