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pci: msi stuff

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Matheus
2022-11-24 19:16:37 -03:00
parent 8e481f5d91
commit 9fc62579ea
3 changed files with 89 additions and 1 deletions
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src/sys/block/nvme.c
+9 -1
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@@ -99,7 +99,15 @@ void nvme_initctlr(pci_enumeration* pci){
printf("Controller minimum page size is bigger than the system page size\n");
return;
}
// set relevant command stuff in the pci config space
pci_setcommand(pci, PCI_COMMAND_MEMORY, 1);
pci_setcommand(pci, PCI_COMMAND_MASTER, 1);
pci_msienable(pci, true); // msi is always supported by nvme
pci_msimaskall(pci, 1);
// reset controller
uint32_t cc = bar0->cc;
@@ -126,7 +134,7 @@ void nvme_initctlr(pci_enumeration* pci){
bar0->cc = cc;
// enable
bar0->cc |= 1;
while((bar0->csts & 3) == 0);