msm: kgsl: allow consistent CPU and GPU mappings
KGSL_GPUMEM_ALLOC_ID now takes a flag,
KGSL_MEMFLAGS_USE_CPU_MAP. When set, the GPU
mapping will be set up to match the CPU mapping
during mmap(). This feature is only supported when
using per process pagetables with the IOMMU. The
flags field of KGSL_GPUMEM_ALLOC_ID is copied back
to userspace and KGSL_MEMFLAGS_USE_CPU_MAP will
be cleared when this feature is not supported.
The IOMMU virtual address space has been adjusted
when perprocess pagetables is enabled so that the
entire userpace address range (0 to TASK_SIZE) can
have equivalent mappings on the IOMMU. For buffers
that do not have equivalent mappings, the address
range from PAGE_OFFSET to KGSL_IOMMU_GLOBAL_MEM_BASE
is used.
Change-Id: Ib61c03aa7453c3dd901c41e8fd297f66d402ae1a
Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_debugfs.c b/drivers/gpu/msm/kgsl_debugfs.c
index ab3c478..a4bbee2 100644
--- a/drivers/gpu/msm/kgsl_debugfs.c
+++ b/drivers/gpu/msm/kgsl_debugfs.c
@@ -209,36 +209,59 @@
return table[kgsl_memdesc_get_cachemode(m)];
}
+static void print_mem_entry(struct seq_file *s, struct kgsl_mem_entry *entry)
+{
+ char flags[6];
+ char usage[16];
+ struct kgsl_memdesc *m = &entry->memdesc;
+
+ flags[0] = kgsl_memdesc_is_global(m) ? 'g' : '-';
+ flags[1] = m->flags & KGSL_MEMFLAGS_GPUREADONLY ? 'r' : '-';
+ flags[2] = get_alignflag(m);
+ flags[3] = get_cacheflag(m);
+ flags[4] = kgsl_memdesc_use_cpu_map(m) ? 'p' : '-';
+ flags[5] = '\0';
+
+ kgsl_get_memory_usage(usage, sizeof(usage), m->flags);
+
+ seq_printf(s, "%08x %8d %5d %5s %10s %16s %5d\n",
+ m->gpuaddr, m->size, entry->id, flags,
+ memtype_str(entry->memtype), usage, m->sglen);
+}
+
static int process_mem_print(struct seq_file *s, void *unused)
{
struct kgsl_mem_entry *entry;
struct rb_node *node;
struct kgsl_process_private *private = s->private;
- char flags[5];
- char usage[16];
+ int next = 0;
- spin_lock(&private->mem_lock);
seq_printf(s, "%8s %8s %5s %5s %10s %16s %5s\n",
"gpuaddr", "size", "id", "flags", "type", "usage", "sglen");
+
+ /* print all entries with a GPU address */
+ spin_lock(&private->mem_lock);
+
for (node = rb_first(&private->mem_rb); node; node = rb_next(node)) {
- struct kgsl_memdesc *m;
-
entry = rb_entry(node, struct kgsl_mem_entry, node);
- m = &entry->memdesc;
-
- flags[0] = kgsl_memdesc_is_global(m) ? 'g' : '-';
- flags[1] = m->flags & KGSL_MEMFLAGS_GPUREADONLY ? 'r' : '-';
- flags[2] = get_alignflag(m);
- flags[3] = get_cacheflag(m);
- flags[4] = '\0';
-
- kgsl_get_memory_usage(usage, sizeof(usage), m->flags);
-
- seq_printf(s, "%08x %8d %5d %5s %10s %16s %5d\n",
- m->gpuaddr, m->size, entry->id, flags,
- memtype_str(entry->memtype), usage, m->sglen);
+ print_mem_entry(s, entry);
}
+
spin_unlock(&private->mem_lock);
+
+ /* now print all the unbound entries */
+ while (1) {
+ rcu_read_lock();
+ entry = idr_get_next(&private->mem_idr, &next);
+ rcu_read_unlock();
+
+ if (entry == NULL)
+ break;
+ if (entry->memdesc.gpuaddr == 0)
+ print_mem_entry(s, entry);
+ next++;
+ }
+
return 0;
}