mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-06 08:46:46 +00:00
Code Issues Releases Wiki Activity

gpu: host1x: Don't reset firewall between gathers

Browse source 
The firewall was reinitialised for each gather. Because the filter
was reinitialised, it did not track the class over gather boundaries.
This allowed the user application to set host1x class to one class
in one gather and use that class in another gather without firewall
having knowledge about that.

Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Terje Bergstrom 2013-05-29 13:26:04 +03:00 committed by Thierry Reding
parent 5060d8ec7c
commit afac0e43c6
1 changed files with 34 additions and 38 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

72
drivers/gpu/host1x/job.c
View file

@ -376,69 +376,60 @@ static int check_nonincr(struct host1x_firewall *fw)
return 0;
}
static int validate(struct host1x_job *job, struct device *dev,
struct host1x_job_gather *g)
static int validate(struct host1x_firewall *fw, struct host1x_job_gather *g)
{
u32 *cmdbuf_base;
int err = 0;
struct host1x_firewall fw;
fw.job = job;
fw.dev = dev;
fw.reloc = job->relocarray;
fw.num_relocs = job->num_relocs;
fw.cmdbuf_id = g->bo;
fw.offset = 0;
fw.class = 0;
if (!job->is_addr_reg)
if (!fw->job->is_addr_reg)
return 0;
cmdbuf_base = host1x_bo_mmap(g->bo);
if (!cmdbuf_base)
return -ENOMEM;
fw->words = g->words;
fw->cmdbuf_id = g->bo;
fw->offset = 0;
fw.words = g->words;
while (fw.words && !err) {
u32 word = cmdbuf_base[fw.offset];
while (fw->words && !err) {
u32 word = cmdbuf_base[fw->offset];
u32 opcode = (word & 0xf0000000) >> 28;
fw.mask = 0;
fw.reg = 0;
fw.count = 0;
fw.words--;
fw.offset++;
fw->mask = 0;
fw->reg = 0;
fw->count = 0;
fw->words--;
fw->offset++;
switch (opcode) {
case 0:
fw.class = word >> 6 & 0x3ff;
fw.mask = word & 0x3f;
fw.reg = word >> 16 & 0xfff;
err = check_mask(&fw);
fw->class = word >> 6 & 0x3ff;
fw->mask = word & 0x3f;
fw->reg = word >> 16 & 0xfff;
err = check_mask(fw);
if (err)
goto out;
break;
case 1:
fw.reg = word >> 16 & 0xfff;
fw.count = word & 0xffff;
err = check_incr(&fw);
fw->reg = word >> 16 & 0xfff;
fw->count = word & 0xffff;
err = check_incr(fw);
if (err)
goto out;
break;
case 2:
fw.reg = word >> 16 & 0xfff;
fw.count = word & 0xffff;
err = check_nonincr(&fw);
fw->reg = word >> 16 & 0xfff;
fw->count = word & 0xffff;
err = check_nonincr(fw);
if (err)
goto out;
break;
case 3:
fw.mask = word & 0xffff;
fw.reg = word >> 16 & 0xfff;
err = check_mask(&fw);
fw->mask = word & 0xffff;
fw->reg = word >> 16 & 0xfff;
err = check_mask(fw);
if (err)
goto out;
break;
@ -453,12 +444,10 @@ static int validate(struct host1x_job *job, struct device *dev,
}
/* No relocs should remain at this point */
if (fw.num_relocs)
if (fw->num_relocs)
err = -EINVAL;
out:
host1x_bo_munmap(g->bo, cmdbuf_base);
return err;
}
@ -508,8 +497,15 @@ int host1x_job_pin(struct host1x_job *job, struct device *dev)
int err;
unsigned int i, j;
struct host1x *host = dev_get_drvdata(dev->parent);
struct host1x_firewall fw;
DECLARE_BITMAP(waitchk_mask, host1x_syncpt_nb_pts(host));
fw.job = job;
fw.dev = dev;
fw.reloc = job->relocarray;
fw.num_relocs = job->num_relocs;
fw.class = 0;
bitmap_zero(waitchk_mask, host1x_syncpt_nb_pts(host));
for (i = 0; i < job->num_waitchk; i++) {
u32 syncpt_id = job->waitchk[i].syncpt_id;
@ -543,7 +539,7 @@ int host1x_job_pin(struct host1x_job *job, struct device *dev)
err = 0;
if (IS_ENABLED(CONFIG_TEGRA_HOST1X_FIREWALL))
err = validate(job, dev, g);
err = validate(&fw, g);
if (err)
dev_err(dev, "Job invalid (err=%d)\n", err);