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d1ddbd2cf1
This pulls them out of srv.init (and src/include where the kernel uses them) and puts them into their own libs for sharing.
56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
#include "pci/config.h"
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#include <j6/syslog.hh>
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#include <pci/config.h>
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#include <pci/device.h>
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#include <pci/group.h>
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namespace pci {
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//map config space into memory:
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//inline constexpr j6_vm_flags mmio_flags = (j6_vm_flags)(j6_vm_flag_write | j6_vm_flag_mmio);
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//map_phys(sys, group.base, pci::group::config_size, mmio_flags);
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group::iterator::iterator(const group &g, bus_addr a) :
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m_group {g}, m_addr {a}
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{
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increment_until_valid(false);
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}
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void
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group::iterator::increment()
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{
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// If we're iterating functions, the device must be valid.
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// Finish iterating all functions.
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if (m_addr.function && m_addr.function < bus_addr::max_functions) {
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++m_addr.function;
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return;
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}
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m_addr.function = 0;
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if (m_addr.device < bus_addr::max_devices) {
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++m_addr.device;
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return;
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}
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m_addr.device = 0;
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++m_addr.bus;
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}
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void
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group::iterator::increment_until_valid(bool pre_increment)
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{
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if (pre_increment)
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increment();
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bus_addr end_addr = {0, 0, uint16_t(m_group.bus_end+1)};
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if (!m_group.has_device(m_addr) && m_addr < end_addr)
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increment();
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}
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bool
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group::has_device(bus_addr addr) const
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{
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return device_base(addr)->vendor != 0xffff;
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}
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} // namespace pci
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