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nvme: properly support versions older than 1.4

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Matheus
2023-08-07 20:36:01 -03:00
parent ff52baf4f4
commit bd715ac5e9
1 changed files with 13 additions and 2 deletions
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kernel-src/io/block/nvme.c
+13 -2
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@@ -678,13 +678,14 @@ static void initcontroller(pcienum_t *e) {
if (STATUS_FATAL(bar0->status)) {
printf("nvme: controller returned fatal while initializing\n");
pmm_free(acq, 2);
return;
}
nvmecontroller_t *controller = alloc(sizeof(nvmecontroller_t));
__assert(controller);
controller->id = ctlrid++;
controller->id = ctlrid;
controller->bar0 = bar0;
controller->dbstride = CAP_DOORBELLSTRIDE(bar0->cap);
controller->maxentries = CAP_MAXENTRIES(bar0->cap);
@@ -713,7 +714,17 @@ static void initcontroller(pcienum_t *e) {
__assert(controllerid);
__assert(IDENTIFY_CONTROLLER(controller, controllerid) == 0);
__assert(controllerid->type == CONTROLLER_TYPE_IO);
// <=1.3 controllers will report a 0 in this field. >=1.4 controllers have a proper type here
if (controllerid->type != 0 && controllerid->type != CONTROLLER_TYPE_IO) {
printf("nvme: controller type not supported\n");
// FIXME free ISRs
pmm_free(acq, 2);
free(controllerid);
free(controller);
return;
}
++ctlrid;
resetsoftwareprogress(controller);