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Move PCI classes to separate files

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This commit is contained in:
Justin C. Miller
2018-05-09 01:21:30 -07:00
parent 9128bfc5f1
commit b389e75d33
7 changed files with 231 additions and 146 deletions
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74
src/kernel/pci.cpp Normal file
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@@ -0,0 +1,74 @@
#include "kutil/assert.h"
#include "log.h"
#include "interrupts.h"
#include "pci.h"
pci_device::pci_device() :
m_base(nullptr),
m_bus_addr(0),
m_vendor(0),
m_device(0),
m_class(0),
m_subclass(0),
m_progif(0),
m_revision(0),
m_irq(isr::isrIgnoreF),
m_header_type(0)
{
}
pci_device::pci_device(pci_group &group, uint8_t bus, uint8_t device, uint8_t func) :
m_base(group.base_for(bus, device, func)),
m_bus_addr(bus_addr(bus, device, func)),
m_irq(isr::isrIgnoreF)
{
m_vendor = m_base[0] & 0xffff;
m_device = (m_base[0] >> 16) & 0xffff;
m_revision = m_base[2] & 0xff;
m_progif = (m_base[2] >> 8) & 0xff;
m_subclass = (m_base[2] >> 16) & 0xff;
m_class = (m_base[2] >> 24) & 0xff;
m_header_type = (m_base[3] >> 16) & 0x7f;
m_multi = ((m_base[3] >> 16) & 0x80) == 0x80;
log::info(logs::device, "Found PCIe device at %02d:%02d:%d of type %d.%d id %04x:%04x",
bus, device, func, m_class, m_subclass, m_vendor, m_device);
}
uint32_t
pci_device::get_bar(unsigned i)
{
if (m_header_type == 0) {
kassert(i < 6, "Requested BAR >5 for PCI device");
} else if (m_header_type == 1) {
kassert(i < 2, "Requested BAR >1 for PCI bridge");
} else {
kassert(0, "Requested BAR for other PCI device type");
}
return m_base[4+i];
}
void
pci_device::set_bar(unsigned i, uint32_t val)
{
if (m_header_type == 0) {
kassert(i < 6, "Requested BAR >5 for PCI device");
} else if (m_header_type == 1) {
kassert(i < 2, "Requested BAR >1 for PCI bridge");
} else {
kassert(0, "Requested BAR for other PCI device type");
}
m_base[4+i] = val;
}
bool
pci_group::has_device(uint8_t bus, uint8_t device, uint8_t func)
{
return (*base_for(bus, device, func) & 0xffff) != 0xffff;
}