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drm/i915/gvt: Remove duplicated MMIO entries 

Remove duplicated MMIO entries in the tracked MMIO list. -EEXIST
is returned if duplicated MMIO entries are found when new MMIO
entry is added.

v2:
- Use WARN(1, ...) for more verbose message. (Zhenyu)

Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Cc: Changbin Du <changbin.du@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Reviewed-by: Yulei Zhang <yulei.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Jian Jun Chen 2017-07-19 12:18:39 +08:00 committed by Zhenyu Wang
parent 73821a53d0
commit 36ed7e97e2
1 changed files with 10 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/gpu/drm/i915/gvt/handlers.c
View File

@ -113,9 +113,17 @@ static int new_mmio_info(struct intel_gvt *gvt,
info->offset = i;
p = find_mmio_info(gvt, info->offset);
if (p)
gvt_err("dup mmio definition offset %x\n",
if (p) {
WARN(1, "dup mmio definition offset %x\n",
info->offset);
kfree(info);
/* We return -EEXIST here to make GVT-g load fail.
* So duplicated MMIO can be found as soon as
* possible.
*/
return -EEXIST;
}
info->ro_mask = ro_mask;
info->device = device;
@ -2583,7 +2591,6 @@ static int init_broadwell_mmio_info(struct intel_gvt *gvt)
MMIO_F(0x24d0, 48, F_CMD_ACCESS, 0, 0, D_BDW_PLUS,
NULL, force_nonpriv_write);
MMIO_D(0x22040, D_BDW_PLUS);
MMIO_D(0x44484, D_BDW_PLUS);
MMIO_D(0x4448c, D_BDW_PLUS);
@ -2641,7 +2648,6 @@ static int init_skl_mmio_info(struct intel_gvt *gvt)
MMIO_D(HSW_PWR_WELL_BIOS, D_SKL_PLUS);
MMIO_DH(HSW_PWR_WELL_DRIVER, D_SKL_PLUS, NULL,
skl_power_well_ctl_write);
MMIO_DH(GEN6_PCODE_MAILBOX, D_SKL_PLUS, NULL, mailbox_write);
MMIO_D(0xa210, D_SKL_PLUS);
MMIO_D(GEN9_MEDIA_PG_IDLE_HYSTERESIS, D_SKL_PLUS);
@ -2833,7 +2839,6 @@ static int init_skl_mmio_info(struct intel_gvt *gvt)
MMIO_D(0x320f0, D_SKL | D_KBL);
MMIO_DFH(_REG_VCS2_EXCC, D_SKL_PLUS, F_CMD_ACCESS, NULL, NULL);
MMIO_DFH(_REG_VECS_EXCC, D_SKL_PLUS, F_CMD_ACCESS, NULL, NULL);
MMIO_D(0x70034, D_SKL_PLUS);
MMIO_D(0x71034, D_SKL_PLUS);
MMIO_D(0x72034, D_SKL_PLUS);
@ -2851,10 +2856,7 @@ static int init_skl_mmio_info(struct intel_gvt *gvt)
NULL, NULL);
MMIO_D(0x4ab8, D_KBL);
MMIO_D(0x940c, D_SKL_PLUS);
MMIO_D(0x2248, D_SKL_PLUS | D_KBL);
MMIO_D(0x4ab0, D_SKL | D_KBL);
MMIO_D(0x20d4, D_SKL | D_KBL);
return 0;
}