From: Pei Zhang Date: Mon, 20 Mar 2017 15:49:19 +0000 (+0800) Subject: drm/i915/gvt: add write handler for mmio mbctl X-Git-Tag: v4.11-rc5~25^2~1^2~1^2~4 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=975629c3f76ce3d86e1f943db9847e0312a98daf;p=karo-tx-linux.git drm/i915/gvt: add write handler for mmio mbctl Guest will write mmio mbctl which need a special handler in gvt to clear the bit 4 to inidcate the write operation success. V2: use bit definition macro to make code readable. Signed-off-by: Pei Zhang Signed-off-by: Zhenyu Wang --- diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c index eaff45d417e8..6da9ae1618e3 100644 --- a/drivers/gpu/drm/i915/gvt/handlers.c +++ b/drivers/gpu/drm/i915/gvt/handlers.c @@ -970,6 +970,14 @@ static int dp_aux_ch_ctl_mmio_write(struct intel_vgpu *vgpu, return 0; } +static int mbctl_write(struct intel_vgpu *vgpu, unsigned int offset, + void *p_data, unsigned int bytes) +{ + *(u32 *)p_data &= (~GEN6_MBCTL_ENABLE_BOOT_FETCH); + write_vreg(vgpu, offset, p_data, bytes); + return 0; +} + static int vga_control_mmio_write(struct intel_vgpu *vgpu, unsigned int offset, void *p_data, unsigned int bytes) { @@ -2238,7 +2246,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt) MMIO_D(0x7180, D_ALL); MMIO_D(0x7408, D_ALL); MMIO_D(0x7c00, D_ALL); - MMIO_D(GEN6_MBCTL, D_ALL); + MMIO_DH(GEN6_MBCTL, D_ALL, NULL, mbctl_write); MMIO_D(0x911c, D_ALL); MMIO_D(0x9120, D_ALL); MMIO_DFH(GEN7_UCGCTL4, D_ALL, F_CMD_ACCESS, NULL, NULL);