From c5e8e93897b7bb0a336bf3332f82f8d9f2b33f14 Mon Sep 17 00:00:00 2001 From: Pranjal Ramajor Asha Kanojiya Date: Fri, 4 Oct 2024 13:32:52 -0600 Subject: accel/qaic: Fix the for loop used to walk SG table Only for_each_sgtable_dma_sg() should be used to walk through a SG table to grab correct bus address and length pair after calling DMA MAP API on a SG table as DMA MAP APIs updates the SG table and for_each_sgtable_sg() walks through the original SG table. Fixes: ff13be830333 ("accel/qaic: Add datapath") Fixes: 129776ac2e38 ("accel/qaic: Add control path") Signed-off-by: Pranjal Ramajor Asha Kanojiya Reviewed-by: Jeffrey Hugo Signed-off-by: Jeffrey Hugo Reviewed-by: Jacek Lawrynowicz Link: https://patchwork.freedesktop.org/patch/msgid/20241004193252.3888544-1-quic_jhugo@quicinc.com --- drivers/accel/qaic/qaic_control.c | 2 +- drivers/accel/qaic/qaic_data.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/accel') diff --git a/drivers/accel/qaic/qaic_control.c b/drivers/accel/qaic/qaic_control.c index 9e8a8cbadf6b..d8bdab69f800 100644 --- a/drivers/accel/qaic/qaic_control.c +++ b/drivers/accel/qaic/qaic_control.c @@ -496,7 +496,7 @@ static int encode_addr_size_pairs(struct dma_xfer *xfer, struct wrapper_list *wr nents = sgt->nents; nents_dma = nents; *size = QAIC_MANAGE_EXT_MSG_LENGTH - msg_hdr_len - sizeof(**out_trans); - for_each_sgtable_sg(sgt, sg, i) { + for_each_sgtable_dma_sg(sgt, sg, i) { *size -= sizeof(*asp); /* Save 1K for possible follow-up transactions. */ if (*size < SZ_1K) { diff --git a/drivers/accel/qaic/qaic_data.c b/drivers/accel/qaic/qaic_data.c index e86e71c1cdd8..c20eb63750f5 100644 --- a/drivers/accel/qaic/qaic_data.c +++ b/drivers/accel/qaic/qaic_data.c @@ -184,7 +184,7 @@ static int clone_range_of_sgt_for_slice(struct qaic_device *qdev, struct sg_tabl nents = 0; size = size ? size : PAGE_SIZE; - for (sg = sgt_in->sgl; sg; sg = sg_next(sg)) { + for_each_sgtable_dma_sg(sgt_in, sg, j) { len = sg_dma_len(sg); if (!len) @@ -221,7 +221,7 @@ static int clone_range_of_sgt_for_slice(struct qaic_device *qdev, struct sg_tabl /* copy relevant sg node and fix page and length */ sgn = sgf; - for_each_sgtable_sg(sgt, sg, j) { + for_each_sgtable_dma_sg(sgt, sg, j) { memcpy(sg, sgn, sizeof(*sg)); if (sgn == sgf) { sg_dma_address(sg) += offf; @@ -301,7 +301,7 @@ static int encode_reqs(struct qaic_device *qdev, struct bo_slice *slice, * fence. */ dev_addr = req->dev_addr; - for_each_sgtable_sg(slice->sgt, sg, i) { + for_each_sgtable_dma_sg(slice->sgt, sg, i) { slice->reqs[i].cmd = cmd; slice->reqs[i].src_addr = cpu_to_le64(slice->dir == DMA_TO_DEVICE ? sg_dma_address(sg) : dev_addr); -- cgit v1.2.3 From 72f7e16eccddde99386a10eb2d08833e805917c6 Mon Sep 17 00:00:00 2001 From: Andrzej Kacprowski Date: Thu, 17 Oct 2024 16:49:58 +0200 Subject: accel/ivpu: Fix NOC firewall interrupt handling The NOC firewall interrupt means that the HW prevented unauthorized access to a protected resource, so there is no need to trigger device reset in such case. To facilitate security testing add firewall_irq_counter debugfs file that tracks firewall interrupts. Fixes: 8a27ad81f7d3 ("accel/ivpu: Split IP and buttress code") Cc: stable@vger.kernel.org # v6.11+ Signed-off-by: Andrzej Kacprowski Reviewed-by: Jacek Lawrynowicz Reviewed-by: Jeffrey Hugo Signed-off-by: Jacek Lawrynowicz Link: https://patchwork.freedesktop.org/patch/msgid/20241017144958.79327-1-jacek.lawrynowicz@linux.intel.com --- drivers/accel/ivpu/ivpu_debugfs.c | 9 +++++++++ drivers/accel/ivpu/ivpu_hw.c | 1 + drivers/accel/ivpu/ivpu_hw.h | 1 + drivers/accel/ivpu/ivpu_hw_ip.c | 5 ++++- 4 files changed, 15 insertions(+), 1 deletion(-) (limited to 'drivers/accel') diff --git a/drivers/accel/ivpu/ivpu_debugfs.c b/drivers/accel/ivpu/ivpu_debugfs.c index 6f86f8df30db..8d50981594d1 100644 --- a/drivers/accel/ivpu/ivpu_debugfs.c +++ b/drivers/accel/ivpu/ivpu_debugfs.c @@ -108,6 +108,14 @@ static int reset_pending_show(struct seq_file *s, void *v) return 0; } +static int firewall_irq_counter_show(struct seq_file *s, void *v) +{ + struct ivpu_device *vdev = seq_to_ivpu(s); + + seq_printf(s, "%d\n", atomic_read(&vdev->hw->firewall_irq_counter)); + return 0; +} + static const struct drm_debugfs_info vdev_debugfs_list[] = { {"bo_list", bo_list_show, 0}, {"fw_name", fw_name_show, 0}, @@ -116,6 +124,7 @@ static const struct drm_debugfs_info vdev_debugfs_list[] = { {"last_bootmode", last_bootmode_show, 0}, {"reset_counter", reset_counter_show, 0}, {"reset_pending", reset_pending_show, 0}, + {"firewall_irq_counter", firewall_irq_counter_show, 0}, }; static ssize_t diff --git a/drivers/accel/ivpu/ivpu_hw.c b/drivers/accel/ivpu/ivpu_hw.c index 27f0fe4d54e0..e69c0613513f 100644 --- a/drivers/accel/ivpu/ivpu_hw.c +++ b/drivers/accel/ivpu/ivpu_hw.c @@ -249,6 +249,7 @@ int ivpu_hw_init(struct ivpu_device *vdev) platform_init(vdev); wa_init(vdev); timeouts_init(vdev); + atomic_set(&vdev->hw->firewall_irq_counter, 0); return 0; } diff --git a/drivers/accel/ivpu/ivpu_hw.h b/drivers/accel/ivpu/ivpu_hw.h index 1c0c98e3afb8..a96a05b2acda 100644 --- a/drivers/accel/ivpu/ivpu_hw.h +++ b/drivers/accel/ivpu/ivpu_hw.h @@ -52,6 +52,7 @@ struct ivpu_hw_info { int dma_bits; ktime_t d0i3_entry_host_ts; u64 d0i3_entry_vpu_ts; + atomic_t firewall_irq_counter; }; int ivpu_hw_init(struct ivpu_device *vdev); diff --git a/drivers/accel/ivpu/ivpu_hw_ip.c b/drivers/accel/ivpu/ivpu_hw_ip.c index dfd2f4a5b526..60b33fc59d96 100644 --- a/drivers/accel/ivpu/ivpu_hw_ip.c +++ b/drivers/accel/ivpu/ivpu_hw_ip.c @@ -1062,7 +1062,10 @@ static void irq_wdt_mss_handler(struct ivpu_device *vdev) static void irq_noc_firewall_handler(struct ivpu_device *vdev) { - ivpu_pm_trigger_recovery(vdev, "NOC Firewall IRQ"); + atomic_inc(&vdev->hw->firewall_irq_counter); + + ivpu_dbg(vdev, IRQ, "NOC Firewall interrupt detected, counter %d\n", + atomic_read(&vdev->hw->firewall_irq_counter)); } /* Handler for IRQs from NPU core */ -- cgit v1.2.3