From 08a0188b0445784224c9508324e81d5ed4ee5e88 Mon Sep 17 00:00:00 2001 From: Terje Bergstrom Date: Wed, 29 May 2013 13:26:04 +0300 Subject: [PATCH] gpu: host1x: Don't reset firewall between gathers 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 Signed-off-by: Arto Merilainen Signed-off-by: Thierry Reding --- drivers/gpu/host1x/job.c | 72 +++++++++++++++++++--------------------- 1 file changed, 34 insertions(+), 38 deletions(-) diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c index 83804fdf9c99..5b9548f610f1 100644 --- a/drivers/gpu/host1x/job.c +++ b/drivers/gpu/host1x/job.c @@ -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); -- 2.39.5