--- /dev/null
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+#include "priv.h"
+
+#include <subdev/bios.h>
+#include <subdev/bios/bmp.h>
+#include <subdev/bios/bit.h>
+
+u8
+nvbios_checksum(const u8 *data, int size)
+{
+ u8 sum = 0;
+ while (size--)
+ sum += *data++;
+ return sum;
+}
+
+u16
+nvbios_findstr(const u8 *data, int size, const char *str, int len)
+{
+ int i, j;
+
+ for (i = 0; i <= (size - len); i++) {
+ for (j = 0; j < len; j++)
+ if ((char)data[i + j] != str[j])
+ break;
+ if (j == len)
+ return i;
+ }
+
+ return 0;
+}
+
+int
+nvbios_extend(struct nvkm_bios *bios, u32 length)
+{
+ if (bios->size < length) {
+ u8 *prev = bios->data;
+ if (!(bios->data = kmalloc(length, GFP_KERNEL))) {
+ bios->data = prev;
+ return -ENOMEM;
+ }
+ memcpy(bios->data, prev, bios->size);
+ bios->size = length;
+ kfree(prev);
+ return 1;
+ }
+ return 0;
+}
+
+static u8
+nvkm_bios_rd08(struct nvkm_object *object, u64 addr)
+{
+ struct nvkm_bios *bios = (void *)object;
+ return bios->data[addr];
+}
+
+static u16
+nvkm_bios_rd16(struct nvkm_object *object, u64 addr)
+{
+ struct nvkm_bios *bios = (void *)object;
+ return get_unaligned_le16(&bios->data[addr]);
+}
+
+static u32
+nvkm_bios_rd32(struct nvkm_object *object, u64 addr)
+{
+ struct nvkm_bios *bios = (void *)object;
+ return get_unaligned_le32(&bios->data[addr]);
+}
+
+static void
+nvkm_bios_wr08(struct nvkm_object *object, u64 addr, u8 data)
+{
+ struct nvkm_bios *bios = (void *)object;
+ bios->data[addr] = data;
+}
+
+static void
+nvkm_bios_wr16(struct nvkm_object *object, u64 addr, u16 data)
+{
+ struct nvkm_bios *bios = (void *)object;
+ put_unaligned_le16(data, &bios->data[addr]);
+}
+
+static void
+nvkm_bios_wr32(struct nvkm_object *object, u64 addr, u32 data)
+{
+ struct nvkm_bios *bios = (void *)object;
+ put_unaligned_le32(data, &bios->data[addr]);
+}
+
+static int
+nvkm_bios_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nvkm_oclass *oclass, void *data, u32 size,
+ struct nvkm_object **pobject)
+{
+ struct nvkm_bios *bios;
+ struct bit_entry bit_i;
+ int ret;
+
+ ret = nvkm_subdev_create(parent, engine, oclass, 0,
+ "VBIOS", "bios", &bios);
+ *pobject = nv_object(bios);
+ if (ret)
+ return ret;
+
+ ret = nvbios_shadow(bios);
+ if (ret)
+ return ret;
+
+ /* detect type of vbios we're dealing with */
+ bios->bmp_offset = nvbios_findstr(bios->data, bios->size,
+ "\xff\x7f""NV\0", 5);
+ if (bios->bmp_offset) {
+ nv_info(bios, "BMP version %x.%x\n",
+ bmp_version(bios) >> 8,
+ bmp_version(bios) & 0xff);
+ }
+
+ bios->bit_offset = nvbios_findstr(bios->data, bios->size,
+ "\xff\xb8""BIT", 5);
+ if (bios->bit_offset)
+ nv_info(bios, "BIT signature found\n");
+
+ /* determine the vbios version number */
+ if (!bit_entry(bios, 'i', &bit_i) && bit_i.length >= 4) {
+ bios->version.major = nv_ro08(bios, bit_i.offset + 3);
+ bios->version.chip = nv_ro08(bios, bit_i.offset + 2);
+ bios->version.minor = nv_ro08(bios, bit_i.offset + 1);
+ bios->version.micro = nv_ro08(bios, bit_i.offset + 0);
+ bios->version.patch = nv_ro08(bios, bit_i.offset + 4);
+ } else
+ if (bmp_version(bios)) {
+ bios->version.major = nv_ro08(bios, bios->bmp_offset + 13);
+ bios->version.chip = nv_ro08(bios, bios->bmp_offset + 12);
+ bios->version.minor = nv_ro08(bios, bios->bmp_offset + 11);
+ bios->version.micro = nv_ro08(bios, bios->bmp_offset + 10);
+ }
+
+ nv_info(bios, "version %02x.%02x.%02x.%02x.%02x\n",
+ bios->version.major, bios->version.chip,
+ bios->version.minor, bios->version.micro, bios->version.patch);
+
+ return 0;
+}
+
+static void
+nvkm_bios_dtor(struct nvkm_object *object)
+{
+ struct nvkm_bios *bios = (void *)object;
+ kfree(bios->data);
+ nvkm_subdev_destroy(&bios->base);
+}
+
+static int
+nvkm_bios_init(struct nvkm_object *object)
+{
+ struct nvkm_bios *bios = (void *)object;
+ return nvkm_subdev_init(&bios->base);
+}
+
+static int
+nvkm_bios_fini(struct nvkm_object *object, bool suspend)
+{
+ struct nvkm_bios *bios = (void *)object;
+ return nvkm_subdev_fini(&bios->base, suspend);
+}
+
+struct nvkm_oclass
+nvkm_bios_oclass = {
+ .handle = NV_SUBDEV(VBIOS, 0x00),
+ .ofuncs = &(struct nvkm_ofuncs) {
+ .ctor = nvkm_bios_ctor,
+ .dtor = nvkm_bios_dtor,
+ .init = nvkm_bios_init,
+ .fini = nvkm_bios_fini,
+ .rd08 = nvkm_bios_rd08,
+ .rd16 = nvkm_bios_rd16,
+ .rd32 = nvkm_bios_rd32,
+ .wr08 = nvkm_bios_wr08,
+ .wr16 = nvkm_bios_wr16,
+ .wr32 = nvkm_bios_wr32,
+ },
+};
Code Review / kvmfornfv.git / blobdiff