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[src/netbsd-8]: src/sys/external/bsd/drm2 Pull up following revision(s) (requ...



details:   https://anonhg.NetBSD.org/src/rev/84f879f21cba
branches:  netbsd-8
changeset: 435233:84f879f21cba
user:      martin <martin%NetBSD.org@localhost>
date:      Sat Sep 01 06:34:00 2018 +0000

description:
Pull up following revision(s) (requested by riastradh in ticket #1003):

        sys/external/bsd/drm2/dist/drm/i915/intel_sdvo.c: revision 1.8
        sys/external/bsd/drm2/dist/drm/ttm/ttm_tt.c: revision 1.10
        sys/external/bsd/drm2/drm/drm_scatter.c: revision 1.4
        sys/external/bsd/drm2/dist/drm/i915/i915_reg.h: revision 1.2
        sys/external/bsd/drm2/linux/linux_ww_mutex.c: revision 1.3
        sys/external/bsd/drm2/linux/linux_ww_mutex.c: revision 1.4
        sys/external/bsd/drm2/linux/linux_idr.c: revision 1.6

Pull in upstream commit:
Author: Ville Syrj=E4l=E4 <ville.syrjala%linux.intel.com@localhost>
Date:   Mon Jun 9 16:20:46 2014 +0300
    drm/i915: Avoid div-by-zero when pixel_multiplier is zero
On certain platforms pixel_multiplier is read out in
.get_pipe_config(), but it also gets used to calculate the
pixel clock in intel_sdvo_get_config(). If the pipe is disabled
but some SDVO outputs are active, we may end up dividing by zero
in intel_sdvo_get_config().
Fixes https://bugs.freedesktop.org/show_bug.cgi?id=3D76520
Tweak slightly sketchy logic in linux_idr.
1. idr_preload can fail if you don't set __GFP_WAIT.
2. If idr_preload fails, it is wrong for idr_alloc to assert.
3. There is no way for idr_alloc to know what flags idr_preload got.
Probably won't *fix* any bugs, but if there is a bug with a missing
__GFP_WAIT, then we will learn about a trifle sooner.
Fix error branch in ttm_dma_tt_init to avoid double-free.
Should fix symptom of PR kern/52438, but who knows what underlying
problem causes us to reach the error branch in the first place.
Fix lockdebug_locked annotations.
When thread A grants ownership to thread B waiting with a context,
thread B needs to assert lockdebug_locked; otherwise, when it
releases, lockdebug_unlocked thinks it's releasing an unlocked
ww_mutex.

Fixes LOCKDEBUG failure with radeon noticed by martin@.

more const

XXX: add a NULL init to avoid a GCC 6 maybe uninit warning.

Remove UB from definition of symbols in i915_reg.h
Kernel Undefined Behavior Sanitizer enforces more warnings in build time.
This makes the build fatal in the drm/i915 code in:
 - intel_ddi_put_crtc_pll(),
 - intel_ddi_clock_get(),
 - intel_ddi_pll_enable(),
 - intel_ddi_setup_hw_pll_state().
The error message in all the cases says:
  error: case label does not reduce to an integer constant
Set the type of the value left shifted to unsigned.
This change is required to build NetBSD/amd64 with KUBSan.

diffstat:

 sys/external/bsd/drm2/dist/drm/i915/i915_reg.h   |   8 +++---
 sys/external/bsd/drm2/dist/drm/i915/intel_sdvo.c |   5 +++-
 sys/external/bsd/drm2/dist/drm/ttm/ttm_tt.c      |   3 +-
 sys/external/bsd/drm2/drm/drm_scatter.c          |   6 ++--
 sys/external/bsd/drm2/linux/linux_idr.c          |  11 ++++++---
 sys/external/bsd/drm2/linux/linux_ww_mutex.c     |  28 ++++++++++++------------
 6 files changed, 34 insertions(+), 27 deletions(-)

diffs (262 lines):

diff -r 523dc8c73e5c -r 84f879f21cba sys/external/bsd/drm2/dist/drm/i915/i915_reg.h
--- a/sys/external/bsd/drm2/dist/drm/i915/i915_reg.h    Sat Sep 01 06:28:23 2018 +0000
+++ b/sys/external/bsd/drm2/dist/drm/i915/i915_reg.h    Sat Sep 01 06:34:00 2018 +0000
@@ -5426,10 +5426,10 @@
 #define  PORT_CLK_SEL_LCPLL_1350       (1<<29)
 #define  PORT_CLK_SEL_LCPLL_810                (2<<29)
 #define  PORT_CLK_SEL_SPLL             (3<<29)
-#define  PORT_CLK_SEL_WRPLL1           (4<<29)
-#define  PORT_CLK_SEL_WRPLL2           (5<<29)
-#define  PORT_CLK_SEL_NONE             (7<<29)
-#define  PORT_CLK_SEL_MASK             (7<<29)
+#define  PORT_CLK_SEL_WRPLL1           (4U<<29)
+#define  PORT_CLK_SEL_WRPLL2           (5U<<29)
+#define  PORT_CLK_SEL_NONE             (7U<<29)
+#define  PORT_CLK_SEL_MASK             (7U<<29)
 
 /* Transcoder clock selection */
 #define TRANS_CLK_SEL_A                        0x46140
diff -r 523dc8c73e5c -r 84f879f21cba sys/external/bsd/drm2/dist/drm/i915/intel_sdvo.c
--- a/sys/external/bsd/drm2/dist/drm/i915/intel_sdvo.c  Sat Sep 01 06:28:23 2018 +0000
+++ b/sys/external/bsd/drm2/dist/drm/i915/intel_sdvo.c  Sat Sep 01 06:34:00 2018 +0000
@@ -1391,7 +1391,10 @@
                         >> SDVO_PORT_MULTIPLY_SHIFT) + 1;
        }
 
-       dotclock = pipe_config->port_clock / pipe_config->pixel_multiplier;
+       dotclock = pipe_config->port_clock;
+
+       if (pipe_config->pixel_multiplier)
+               dotclock /= pipe_config->pixel_multiplier;
 
        if (HAS_PCH_SPLIT(dev))
                ironlake_check_encoder_dotclock(pipe_config, dotclock);
diff -r 523dc8c73e5c -r 84f879f21cba sys/external/bsd/drm2/dist/drm/ttm/ttm_tt.c
--- a/sys/external/bsd/drm2/dist/drm/ttm/ttm_tt.c       Sat Sep 01 06:28:23 2018 +0000
+++ b/sys/external/bsd/drm2/dist/drm/ttm/ttm_tt.c       Sat Sep 01 06:34:00 2018 +0000
@@ -284,7 +284,8 @@
 fail1: kmem_free(ttm_dma->dma_segs, (ttm->num_pages *
                sizeof(ttm_dma->dma_segs[0])));
 fail0: KASSERT(error);
-       ttm_tt_destroy(ttm);
+       drm_free_large(ttm->pages);
+       uao_detach(ttm->swap_storage);
        /* XXX errno NetBSD->Linux */
        return -error;
     }
diff -r 523dc8c73e5c -r 84f879f21cba sys/external/bsd/drm2/drm/drm_scatter.c
--- a/sys/external/bsd/drm2/drm/drm_scatter.c   Sat Sep 01 06:28:23 2018 +0000
+++ b/sys/external/bsd/drm2/drm/drm_scatter.c   Sat Sep 01 06:34:00 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: drm_scatter.c,v 1.3 2014/07/16 20:56:25 riastradh Exp $        */
+/*     $NetBSD: drm_scatter.c,v 1.3.22.1 2018/09/01 06:34:00 martin Exp $      */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: drm_scatter.c,v 1.3 2014/07/16 20:56:25 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: drm_scatter.c,v 1.3.22.1 2018/09/01 06:34:00 martin Exp $");
 
 #include <sys/types.h>
 #include <sys/bus.h>
@@ -50,7 +50,7 @@
     struct drm_file *file __unused)
 {
        struct drm_scatter_gather *const request = data;
-       struct drm_sg_mem *sg;
+       struct drm_sg_mem *sg = NULL;
        int error;
 
        /*
diff -r 523dc8c73e5c -r 84f879f21cba sys/external/bsd/drm2/linux/linux_idr.c
--- a/sys/external/bsd/drm2/linux/linux_idr.c   Sat Sep 01 06:28:23 2018 +0000
+++ b/sys/external/bsd/drm2/linux/linux_idr.c   Sat Sep 01 06:34:00 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_idr.c,v 1.5 2015/01/01 01:15:43 mrg Exp $        */
+/*     $NetBSD: linux_idr.c,v 1.5.10.1 2018/09/01 06:34:00 martin Exp $        */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_idr.c,v 1.5 2015/01/01 01:15:43 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_idr.c,v 1.5.10.1 2018/09/01 06:34:00 martin Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -191,6 +191,7 @@
                ASSERT_SLEEPABLE();
 
        node = kmalloc(sizeof(*node), gfp);
+       KASSERT(node != NULL || !ISSET(gfp, __GFP_WAIT));
        if (node == NULL)
                return;
 
@@ -216,8 +217,10 @@
 
        /* Grab a node allocated by idr_preload.  */
        mutex_spin_enter(&idr_cache.lock);
-       KASSERTMSG(!SIMPLEQ_EMPTY(&idr_cache.preloaded_nodes),
-           "missing call to idr_preload");
+       if (SIMPLEQ_EMPTY(&idr_cache.preloaded_nodes)) {
+               mutex_spin_exit(&idr_cache.lock);
+               return -ENOMEM;
+       }
        node = SIMPLEQ_FIRST(&idr_cache.preloaded_nodes);
        SIMPLEQ_REMOVE_HEAD(&idr_cache.preloaded_nodes, in_list);
        mutex_spin_exit(&idr_cache.lock);
diff -r 523dc8c73e5c -r 84f879f21cba sys/external/bsd/drm2/linux/linux_ww_mutex.c
--- a/sys/external/bsd/drm2/linux/linux_ww_mutex.c      Sat Sep 01 06:28:23 2018 +0000
+++ b/sys/external/bsd/drm2/linux/linux_ww_mutex.c      Sat Sep 01 06:34:00 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_ww_mutex.c,v 1.2 2015/05/21 21:55:55 riastradh Exp $     */
+/*     $NetBSD: linux_ww_mutex.c,v 1.2.10.1 2018/09/01 06:34:00 martin Exp $   */
 
 /*-
  * Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_ww_mutex.c,v 1.2 2015/05/21 21:55:55 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_ww_mutex.c,v 1.2.10.1 2018/09/01 06:34:00 martin Exp $");
 
 #include <sys/types.h>
 #include <sys/atomic.h>
@@ -122,9 +122,9 @@
 
 #ifdef LOCKDEBUG
 static void
-ww_dump(volatile void *cookie)
+ww_dump(const volatile void *cookie)
 {
-       volatile struct ww_mutex *mutex = cookie;
+       const volatile struct ww_mutex *mutex = cookie;
 
        printf_nolog("%-13s: ", "state");
        switch (mutex->wwm_state) {
@@ -135,7 +135,7 @@
                printf_nolog("owned by lwp\n");
                printf_nolog("%-13s: %p\n", "owner", mutex->wwm_u.owner);
                printf_nolog("%-13s: %s\n", "waiters",
-                   cv_has_waiters(__UNVOLATILE(&mutex->wwm_cv))
+                   cv_has_waiters((void *)(intptr_t)&mutex->wwm_cv)
                        ? "yes" : "no");
                break;
        case WW_CTX:
@@ -144,7 +144,7 @@
                printf_nolog("%-13s: %p\n", "lwp",
                    mutex->wwm_u.ctx->wwx_owner);
                printf_nolog("%-13s: %s\n", "waiters",
-                   cv_has_waiters(__UNVOLATILE(&mutex->wwm_cv))
+                   cv_has_waiters((void *)(intptr_t)&mutex->wwm_cv)
                        ? "yes" : "no");
                break;
        case WW_WANTOWN:
@@ -334,7 +334,6 @@
        case WW_UNLOCKED:
                mutex->wwm_state = WW_OWNED;
                mutex->wwm_u.owner = curlwp;
-               WW_LOCKED(mutex);
                break;
        case WW_OWNED:
                KASSERTMSG((mutex->wwm_u.owner != curlwp),
@@ -356,6 +355,7 @@
        }
        KASSERT(mutex->wwm_state == WW_OWNED);
        KASSERT(mutex->wwm_u.owner == curlwp);
+       WW_LOCKED(mutex);
        mutex_exit(&mutex->wwm_lock);
 }
 
@@ -369,7 +369,6 @@
        case WW_UNLOCKED:
                mutex->wwm_state = WW_OWNED;
                mutex->wwm_u.owner = curlwp;
-               WW_LOCKED(mutex);
                break;
        case WW_OWNED:
                KASSERTMSG((mutex->wwm_u.owner != curlwp),
@@ -395,6 +394,7 @@
        }
        KASSERT(mutex->wwm_state == WW_OWNED);
        KASSERT(mutex->wwm_u.owner == curlwp);
+       WW_LOCKED(mutex);
        ret = 0;
 out:   mutex_exit(&mutex->wwm_lock);
        return ret;
@@ -433,7 +433,6 @@
                WW_WANTLOCK(mutex);
                mutex->wwm_state = WW_CTX;
                mutex->wwm_u.ctx = ctx;
-               WW_LOCKED(mutex);
                goto locked;
        case WW_OWNED:
                WW_WANTLOCK(mutex);
@@ -490,10 +489,11 @@
         */
        ww_mutex_lock_wait(mutex, ctx);
 
-locked:        ctx->wwx_acquired++;
-       KASSERT((mutex->wwm_state == WW_CTX) ||
+locked:        KASSERT((mutex->wwm_state == WW_CTX) ||
            (mutex->wwm_state == WW_WANTOWN));
        KASSERT(mutex->wwm_u.ctx == ctx);
+       WW_LOCKED(mutex);
+       ctx->wwx_acquired++;
        mutex_exit(&mutex->wwm_lock);
        return 0;
 }
@@ -531,7 +531,6 @@
                WW_WANTLOCK(mutex);
                mutex->wwm_state = WW_CTX;
                mutex->wwm_u.ctx = ctx;
-               WW_LOCKED(mutex);
                goto locked;
        case WW_OWNED:
                WW_WANTLOCK(mutex);
@@ -597,6 +596,7 @@
 locked:        KASSERT((mutex->wwm_state == WW_CTX) ||
            (mutex->wwm_state == WW_WANTOWN));
        KASSERT(mutex->wwm_u.ctx == ctx);
+       WW_LOCKED(mutex);
        ctx->wwx_acquired++;
        ret = 0;
 out:   mutex_exit(&mutex->wwm_lock);
@@ -634,7 +634,6 @@
        case WW_UNLOCKED:
                mutex->wwm_state = WW_CTX;
                mutex->wwm_u.ctx = ctx;
-               WW_LOCKED(mutex);
                goto locked;
        case WW_OWNED:
                KASSERTMSG((mutex->wwm_u.owner != curlwp),
@@ -665,6 +664,7 @@
 locked:        KASSERT((mutex->wwm_state == WW_CTX) ||
            (mutex->wwm_state == WW_WANTOWN));
        KASSERT(mutex->wwm_u.ctx == ctx);
+       WW_LOCKED(mutex);
        ctx->wwx_acquired++;
        mutex_exit(&mutex->wwm_lock);
 }
@@ -699,7 +699,6 @@
        case WW_UNLOCKED:
                mutex->wwm_state = WW_CTX;
                mutex->wwm_u.ctx = ctx;
-               WW_LOCKED(mutex);
                goto locked;
        case WW_OWNED:
                KASSERTMSG((mutex->wwm_u.owner != curlwp),
@@ -736,6 +735,7 @@
 locked:        KASSERT((mutex->wwm_state == WW_CTX) ||
            (mutex->wwm_state == WW_WANTOWN));
        KASSERT(mutex->wwm_u.ctx == ctx);
+       WW_LOCKED(mutex);
        ctx->wwx_acquired++;
        ret = 0;
 out:   mutex_exit(&mutex->wwm_lock);



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