src/drivers/pci_helper.c

20 int vmm_pci_mem_device_read(void *cookie, int offset, int size, uint32_t *result)
22     if (offset < 0) {
26     if (offset + size >= PCI_CAPABILITY_SPACE_OFFSET) {
32     /* Read the PCI device field at the given offset
34     memcpy(result, cookie + offset, size);
39 int vmm_pci_mem_device_write(void *cookie, int offset, int size, uint32_t value)
41     if (offset < 0) {
45     if (offset + size >= PCI_CAPABILITY_SPACE_OFFSET) {
56     /* Write the PCI device field at the given offset
58     memcpy(cookie + offset, &value, size);
63 int vmm_pci_entry_ignore_write(void *cookie, int offset, int size, uint32_t value)
65     ZF_LOGI("Ignoring PCI entry write @ offset 0x%x", offset);
107 static int passthrough_pci_config_ioread(void *cookie, int offset, int size, uint32_t *result)
112         *result = dev->config.ioread8(dev->config.cookie, dev->addr, offset);
115         *result = dev->config.ioread16(dev->config.cookie, dev->addr, offset);
118         *result = dev->config.ioread32(dev->config.cookie, dev->addr, offset);
126 static int passthrough_pci_config_iowrite(void *cookie, int offset, int size, uint32_t val)
131         dev->config.iowrite8(dev->config.cookie, dev->addr, offset, val);
134         dev->config.iowrite16(dev->config.cookie, dev->addr, offset, val);
137         dev->config.iowrite32(dev->config.cookie, dev->addr, offset, val);
145 static int pci_bar_emul_check_range(unsigned int offset, unsigned int size)
147     if (offset < PCI_BASE_ADDRESS_0 || offset + size > PCI_BASE_ADDRESS_5 + 4) {
171 static int pci_irq_emul_read(void *cookie, int offset, int size, uint32_t *result)
174     if (offset <= PCI_INTERRUPT_LINE && offset + size > PCI_INTERRUPT_LINE) {
176         int ret = emul->passthrough.ioread(emul->passthrough.cookie, offset, size, result);
180         int bit_offset = (PCI_INTERRUPT_LINE - offset) * 8;
185         return emul->passthrough.ioread(emul->passthrough.cookie, offset, size, result);
189 static int pci_irq_emul_write(void *cookie, int offset, int size, uint32_t value)
192     if (offset == PCI_INTERRUPT_LINE && size == 1) {
195     } else if (offset < PCI_INTERRUPT_LINE && offset + size >= PCI_INTERRUPT_LINE) {
199         return emul->passthrough.iowrite(emul->passthrough.cookie, offset, size, value);
203 static int pci_bar_emul_read(void *cookie, int offset, int size, uint32_t *result)
206     if (pci_bar_emul_check_range(offset, size)) {
207         return emul->passthrough.ioread(emul->passthrough.cookie, offset, size, result);
210     int bar = (offset - PCI_BASE_ADDRESS_0) / 4;
211     int bar_offset = offset & 3;
219 static int pci_bar_emul_write(void *cookie, int offset, int size, uint32_t value)
222     if (pci_bar_emul_check_range(offset, size)) {
223         return emul->passthrough.iowrite(emul->passthrough.cookie, offset, size, value);
226     int bar = (offset - PCI_BASE_ADDRESS_0) / 4;
227     int bar_offset = offset & 3;
233 static int pci_bar_passthrough_emul_read(void *cookie, int offset, int size, uint32_t *result)
236     return emul->passthrough.ioread(emul->passthrough.cookie, offset, size, result);
239 static int pci_bar_passthrough_emul_write(void *cookie, int offset, int size, uint32_t value)
242     return emul->passthrough.iowrite(emul->passthrough.cookie, offset, size, value);
294 static int pci_cap_emul_read(void *cookie, int offset, int size, uint32_t *result)
297     if (offset <= PCI_STATUS && offset + size > PCI_STATUS) {
299         int ret = emul->passthrough.ioread(emul->passthrough.cookie, offset, size, result);
303         int bit_offset = (PCI_STATUS - offset) * 8;
309     } else if (offset <= PCI_CAPABILITY_LIST && offset + size > PCI_CAPABILITY_LIST) {
311         int ret = emul->passthrough.ioread(emul->passthrough.cookie, offset, size, result);
315         int bit_offset = (PCI_CAPABILITY_LIST - offset) * 8;
325         if (offset <= emul->ignore_start[i] && offset + size > emul->ignore_end[i]) {
327             ZF_LOGI("Attempted read at 0x%x of size %d from region 0x%x-0x%x", offset, size, emul->ignore_start[i],
335         if (offset <= emul->caps[i] + 1 && offset + size > emul->caps[i] + 1) {
337             int ret = emul->passthrough.ioread(emul->passthrough.cookie, offset, size, result);
341             int bit_offset = (emul->caps[i] + 1 - offset) * 8;
350     return emul->passthrough.ioread(emul->passthrough.cookie, offset, size, result);
353 static int pci_cap_emul_write(void *cookie, int offset, int size, uint32_t value)
359         if (offset <= emul->ignore_start[i] && offset + size > emul->ignore_end[i]) {
361             ZF_LOGI("Attempted write at 0x%x of size %d from region 0x%x-0x%x", offset, size, emul->ignore_start[i],
366     return emul->passthrough.iowrite(emul->passthrough.cookie, offset, size, value);