grml...

[seabios.git] / src / virtio-blk.c

diff --git a/src/virtio-blk.c b/src/virtio-blk.c
index 74af488e7366de41f4195bb94872210dff659ef6..b869189ee15b2ddb6e9657af860fc00f1c3ae924 100644 (file)
--- a/src/virtio-blk.c
+++ b/src/virtio-blk.c
@@ -13,7 +13,7 @@
 #include "biosvar.h" // GET_GLOBAL
 #include "pci_ids.h" // PCI_DEVICE_ID_VIRTIO_BLK
 #include "pci_regs.h" // PCI_VENDOR_ID
-#include "boot.h" // add_bcv_internal
+#include "boot.h" // boot_add_hd
 #include "virtio-pci.h"
 #include "virtio-ring.h"
 #include "virtio-blk.h"
@@ -26,13 +26,13 @@ struct virtiodrive_s {
 };
 
 static int
-virtio_blk_read(struct disk_op_s *op)
+virtio_blk_op(struct disk_op_s *op, int write)
 {
     struct virtiodrive_s *vdrive_g =
         container_of(op->drive_g, struct virtiodrive_s, drive);
     struct vring_virtqueue *vq = GET_GLOBAL(vdrive_g->vq);
     struct virtio_blk_outhdr hdr = {
-        .type = VIRTIO_BLK_T_IN,
+        .type = write ? VIRTIO_BLK_T_OUT : VIRTIO_BLK_T_IN,
         .ioprio = 0,
         .sector = op->lba,
     };
@@ -53,7 +53,10 @@ virtio_blk_read(struct disk_op_s *op)
     };
 
     /* Add to virtqueue and kick host */
-    vring_add_buf(vq, sg, 1, 2, 0, 0);
+    if (write)
+        vring_add_buf(vq, sg, 2, 1, 0, 0);
+    else
+        vring_add_buf(vq, sg, 1, 2, 0, 0);
     vring_kick(GET_GLOBAL(vdrive_g->ioaddr), vq, 1);
 
     /* Wait for reply */
@@ -72,16 +75,16 @@ virtio_blk_read(struct disk_op_s *op)
 }
 
 int
-process_virtio_op(struct disk_op_s *op)
+process_virtio_blk_op(struct disk_op_s *op)
 {
     if (! CONFIG_VIRTIO_BLK || CONFIG_COREBOOT)
         return 0;
     switch (op->command) {
     case CMD_READ:
-        return virtio_blk_read(op);
-    case CMD_FORMAT:
+        return virtio_blk_op(op, 0);
     case CMD_WRITE:
-        return DISK_RET_EWRITEPROTECT;
+        return virtio_blk_op(op, 1);
+    case CMD_FORMAT:
     case CMD_RESET:
     case CMD_ISREADY:
     case CMD_VERIFY:
@@ -94,32 +97,23 @@ process_virtio_op(struct disk_op_s *op)
 }
 
 static void
-init_virtio_blk(u16 bdf)
+init_virtio_blk(struct pci_device *pci)
 {
+    u16 bdf = pci->bdf;
     dprintf(1, "found virtio-blk at %x:%x\n", pci_bdf_to_bus(bdf),
             pci_bdf_to_dev(bdf));
-    char *desc = malloc_tmphigh(MAXDESCSIZE);
     struct virtiodrive_s *vdrive_g = malloc_fseg(sizeof(*vdrive_g));
-    struct vring_virtqueue *vq = memalign_low(PAGE_SIZE, sizeof(*vq));
-    if (!vdrive_g || !desc || !vq) {
+    if (!vdrive_g) {
         warn_noalloc();
-        goto fail;
+        return;
     }
     memset(vdrive_g, 0, sizeof(*vdrive_g));
-    vdrive_g->drive.type = DTYPE_VIRTIO;
+    vdrive_g->drive.type = DTYPE_VIRTIO_BLK;
     vdrive_g->drive.cntl_id = bdf;
-    vdrive_g->vq = vq;
-
-    u16 ioaddr = pci_config_readl(bdf, PCI_BASE_ADDRESS_0) &
-        PCI_BASE_ADDRESS_IO_MASK;
 
+    u16 ioaddr = vp_init_simple(bdf);
     vdrive_g->ioaddr = ioaddr;
-
-    vp_reset(ioaddr);
-    vp_set_status(ioaddr, VIRTIO_CONFIG_S_ACKNOWLEDGE |
-                  VIRTIO_CONFIG_S_DRIVER );
-
-    if (vp_find_vq(ioaddr, 0, vdrive_g->vq) < 0 ) {
+    if (vp_find_vq(ioaddr, 0, &vdrive_g->vq) < 0 ) {
         dprintf(1, "fail to find vq for virtio-blk %x:%x\n",
                 pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf));
         goto fail;
@@ -147,23 +141,18 @@ init_virtio_blk(u16 bdf)
     vdrive_g->drive.pchs.cylinders = cfg.cylinders;
     vdrive_g->drive.pchs.heads = cfg.heads;
     vdrive_g->drive.pchs.spt = cfg.sectors;
+    char *desc = znprintf(MAXDESCSIZE, "Virtio disk PCI:%x:%x",
+                          pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf));
 
-    setup_translation(&vdrive_g->drive);
-    add_bcv_internal(&vdrive_g->drive);
-
-    snprintf(desc, MAXDESCSIZE, "Virtio disk PCI:%x:%x",
-             pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf));
-
-    vdrive_g->drive.desc = desc;
+    boot_add_hd(&vdrive_g->drive, desc, bootprio_find_pci_device(pci));
 
     vp_set_status(ioaddr, VIRTIO_CONFIG_S_ACKNOWLEDGE |
                   VIRTIO_CONFIG_S_DRIVER | VIRTIO_CONFIG_S_DRIVER_OK);
     return;
 
 fail:
+    free(vdrive_g->vq);
     free(vdrive_g);
-    free(desc);
-    free(vq);
 }
 
 void
@@ -175,12 +164,11 @@ virtio_blk_setup(void)
 
     dprintf(3, "init virtio-blk\n");
 
-    int bdf, max;
-    u32 id = PCI_VENDOR_ID_REDHAT_QUMRANET | (PCI_DEVICE_ID_VIRTIO_BLK << 16);
-    foreachpci(bdf, max) {
-        u32 v = pci_config_readl(bdf, PCI_VENDOR_ID);
-        if (v != id)
+    struct pci_device *pci;
+    foreachpci(pci) {
+        if (pci->vendor != PCI_VENDOR_ID_REDHAT_QUMRANET
+            || pci->device != PCI_DEVICE_ID_VIRTIO_BLK)
             continue;
-        init_virtio_blk(bdf);
+        init_virtio_blk(pci);
     }
 }