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From: Ben Widawsky <ben@bwidawsk.net>
To: intel-gfx@lists.freedesktop.org
Cc: Ben Widawsky <ben@bwidawsk.net>
Subject: [PATCH 01/18] drm/i915: CXT_SIZE register offsets added
Date: Sun, 18 Mar 2012 13:39:41 -0700	[thread overview]
Message-ID: <1332103198-25852-2-git-send-email-ben@bwidawsk.net> (raw)
In-Reply-To: <1332103198-25852-1-git-send-email-ben@bwidawsk.net>

From: Ben Widawsky <bwidawsk@gmail.com>

The GPUs can have different default context layouts, and the sizes could
vary based on platform or BIOS. In order to back the context object with
a properly sized BO, we must read this register in order to find out a
sufficient size.

Thankfully (sarcarm!), the register moves and changes meanings
throughout generations.

CTX and CXT differences are intentional as that is how it is in the
documentation (prior to GEN6 it was CXT).

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_reg.h |   21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 52a06be..9e518f4 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1357,6 +1357,27 @@
  */
 #define CCID			0x2180
 #define   CCID_EN		(1<<0)
+#define CXT_SIZE		0x21a0
+#define GEN6_CXT_POWER_SIZE(cxt_reg)	((cxt_reg >> 24) & 0x3f)
+#define GEN6_CXT_RING_SIZE(cxt_reg)	((cxt_reg >> 18) & 0x3f)
+#define GEN6_CXT_RENDER_SIZE(cxt_reg)	((cxt_reg >> 12) & 0x3f)
+#define GEN6_CXT_EXTENDED_SIZE(cxt_reg)	((cxt_reg >> 6) & 0x3f)
+#define GEN6_CXT_PIPELINE_SIZE(cxt_reg)	((cxt_reg >> 0) & 0x3f)
+#define GEN6_CXT_TOTAL_SIZE(cxt_reg)	(GEN6_CXT_POWER_SIZE(cxt_reg) + \
+					GEN6_CXT_RING_SIZE(cxt_reg) + \
+					GEN6_CXT_RENDER_SIZE(cxt_reg) + \
+					GEN6_CXT_EXTENDED_SIZE(cxt_reg) + \
+					GEN6_CXT_PIPELINE_SIZE(cxt_reg))
+#define GEN7_CTX_SIZE		0x21a8
+#define GEN7_CTX_RENDER_SIZE(ctx_reg)	((ctx_reg >> 16) & 0x3f)
+#define GEN7_CTX_EXTENDED_SIZE(ctx_reg)	((ctx_reg >> 9) & 0x7f)
+#define GEN7_CTX_GT1_SIZE(ctx_reg)	((ctx_reg >> 6) & 0x7)
+#define GEN7_CTX_VFSTATE_SIZE(ctx_reg)	((ctx_reg >> 0) & 0x3f)
+#define GEN7_CTX_TOTAL_SIZE(ctx_reg)	(GEN7_CTX_RENDER_SIZE(ctx_reg) + \
+					 GEN7_CTX_EXTENDED_SIZE(ctx_reg) + \
+					 GEN7_CTX_GT1_SIZE(ctx_reg) + \
+					 GEN7_CTX_VFSTATE_SIZE(ctx_reg))
+
 /*
  * Overlay regs
  */
-- 
1.7.9.4

  reply	other threads:[~2012-03-18 20:41 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-18 20:39 [PATCH 00/18] i915 HW Context Support Ben Widawsky
2012-03-18 20:39 ` Ben Widawsky [this message]
2012-03-18 20:39 ` [PATCH 02/18] drm/i915: preliminary context support Ben Widawsky
2012-03-28 22:43   ` Daniel Vetter
2012-03-28 22:59     ` Ben Widawsky
2012-03-29  8:43       ` Daniel Vetter
2012-03-18 20:39 ` [PATCH 03/18] drm/i915: context basic create & destroy Ben Widawsky
2012-03-18 20:39 ` [PATCH 04/18] drm/i915: add context information to objects Ben Widawsky
2012-03-28 22:36   ` Daniel Vetter
2012-03-29  0:20     ` Ben Widawsky
2012-03-29  8:47       ` Daniel Vetter
2012-03-29 15:57         ` Ben Widawsky
2012-03-18 20:39 ` [PATCH 05/18] drm/i915: context switch implementation Ben Widawsky
2012-03-29 18:24   ` Daniel Vetter
2012-03-29 18:43     ` Ben Widawsky
2012-03-29 18:49       ` Daniel Vetter
2012-03-30 18:11         ` Ben Widawsky
2012-03-29 18:47   ` Daniel Vetter
2012-03-18 20:39 ` [PATCH 06/18] drm/i915: trace events for contexts Ben Widawsky
2012-03-18 20:39 ` [PATCH 07/18] drm/i915: Ivybridge MI_ARB_ON_OFF context w/a Ben Widawsky
2012-03-18 20:39 ` [PATCH 08/18] drm/i915: PIPE_CONTROL_TLB_INVALIDATE Ben Widawsky
2012-03-18 20:39 ` [PATCH 09/18] drm/i915: possibly invalidate TLB before context switch Ben Widawsky
2012-03-29 19:25   ` Daniel Vetter
2012-03-30 18:39     ` Ben Widawsky
2012-03-30 19:01       ` Daniel Vetter
2012-03-18 20:39 ` [PATCH 10/18] drm/i915: use the default context Ben Widawsky
2012-03-18 20:39 ` [PATCH 11/18] drm/i915: switch to default context on idle Ben Widawsky
2012-03-29 19:29   ` Daniel Vetter
2012-03-29 20:28     ` Chris Wilson
2012-03-30 21:17     ` Ben Widawsky
2012-03-30 21:30       ` Daniel Vetter
2012-03-18 20:39 ` [PATCH 12/18] drm/i915: try to reset the gpu before unload Ben Widawsky
2012-03-29 19:31   ` Daniel Vetter
2012-03-30 18:50     ` Ben Widawsky
2012-03-30 19:05       ` Daniel Vetter
2012-03-30 16:54   ` Jesse Barnes
2012-03-30 17:30     ` Daniel Vetter
2012-03-18 20:39 ` [PATCH 13/18] drm/i915/context: create & destroy ioctls Ben Widawsky
2012-03-29 19:35   ` Daniel Vetter
2012-03-30 18:55     ` Ben Widawsky
2012-03-30 19:16       ` Daniel Vetter
2012-03-18 20:39 ` [PATCH 14/18] drm/i915/context: switch contexts with execbuf2 Ben Widawsky
2012-03-29 19:38   ` Daniel Vetter
2012-03-30 18:58     ` Ben Widawsky
2012-03-30 19:20       ` Daniel Vetter
2012-03-18 20:39 ` [PATCH 15/18] drm/i915/context: add params Ben Widawsky
2012-03-18 20:39 ` [PATCH 16/18] drm/i915/context: anonymous context interfaces Ben Widawsky
2012-03-29 19:42   ` Daniel Vetter
2012-03-18 20:39 ` [PATCH 17/18] drm/i915: Ironlake rc6 can use " Ben Widawsky
2012-03-29 19:47   ` Daniel Vetter
2012-03-18 20:39 ` [PATCH 18/18] drm/i915: try to enable rc6 on Ironlake... again Ben Widawsky
2012-03-19  3:47 ` [PATCH 00/18] i915 HW Context Support Ben Widawsky
2012-03-19 10:14 ` Daniel Vetter
2012-03-29 19:51   ` Daniel Vetter

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