From patchwork Thu Jul 2 08:47:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Roese X-Patchwork-Id: 240610 List-Id: U-Boot discussion From: sr at denx.de (Stefan Roese) Date: Thu, 2 Jul 2020 10:47:30 +0200 Subject: [PATCH v1 1/4] usb: xhci: Add missing endian conversions (cpu_to_leXX / leXX_to_cpu) In-Reply-To: <20200702084733.2032531-1-sr@denx.de> References: <20200702084733.2032531-1-sr@denx.de> Message-ID: <20200702084733.2032531-2-sr@denx.de> While trying to use the U-Boot xHCI driver on the MIPS Octeon platform, which is big endian, I noticed that the driver is missing a few endian conversion calls. This patch adds these missing endian conversion calls. Signed-off-by: Stefan Roese Cc: Bin Meng Cc: Marek Vasut --- drivers/usb/host/xhci-mem.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 2d968aafb0..bd959b4093 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -110,7 +110,7 @@ static void xhci_scratchpad_free(struct xhci_ctrl *ctrl) ctrl->dcbaa->dev_context_ptrs[0] = 0; - free((void *)(uintptr_t)ctrl->scratchpad->sp_array[0]); + free((void *)le64_to_cpu(ctrl->scratchpad->sp_array[0])); free(ctrl->scratchpad->sp_array); free(ctrl->scratchpad); ctrl->scratchpad = NULL; @@ -225,7 +225,8 @@ static void xhci_link_segments(struct xhci_segment *prev, prev->next = next; if (link_trbs) { val_64 = (uintptr_t)next->trbs; - prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr = val_64; + prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr = + cpu_to_le64(val_64); /* * Set the last TRB in the segment to @@ -486,7 +487,7 @@ int xhci_alloc_virt_device(struct xhci_ctrl *ctrl, unsigned int slot_id) byte_64 = (uintptr_t)(virt_dev->out_ctx->bytes); /* Point to output device context in dcbaa. */ - ctrl->dcbaa->dev_context_ptrs[slot_id] = byte_64; + ctrl->dcbaa->dev_context_ptrs[slot_id] = cpu_to_le64(byte_64); xhci_flush_cache((uintptr_t)&ctrl->dcbaa->dev_context_ptrs[slot_id], sizeof(__le64)); @@ -768,7 +769,7 @@ void xhci_setup_addressable_virt_dev(struct xhci_ctrl *ctrl, debug("route string %x\n", route); #endif - slot_ctx->dev_info |= route; + slot_ctx->dev_info |= cpu_to_le32(route); switch (speed) { case USB_SPEED_SUPER: From patchwork Thu Jul 2 08:47:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Roese X-Patchwork-Id: 240612 List-Id: U-Boot discussion From: sr at denx.de (Stefan Roese) Date: Thu, 2 Jul 2020 10:47:31 +0200 Subject: [PATCH v1 2/4] usb: xhci: xhci_mem_init: Use cpu_to_le64() and not xhci_writeq() In-Reply-To: <20200702084733.2032531-1-sr@denx.de> References: <20200702084733.2032531-1-sr@denx.de> Message-ID: <20200702084733.2032531-3-sr@denx.de> xhci_writeq() makes the CPU->LE swapping only when addressing registers in the xHCI controller address range and not in the local memory (RAM). We need to use cpu_to_le64() here to ensure that the conversion is done correctly. Signed-off-by: Stefan Roese Cc: Bin Meng Cc: Marek Vasut --- drivers/usb/host/xhci-mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index bd959b4093..3b805ecb9e 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -562,7 +562,7 @@ int xhci_mem_init(struct xhci_ctrl *ctrl, struct xhci_hccr *hccr, trb_64 = 0; trb_64 = (uintptr_t)seg->trbs; struct xhci_erst_entry *entry = &ctrl->erst.entries[val]; - xhci_writeq(&entry->seg_addr, trb_64); + entry->seg_addr = cpu_to_le64(trb_64); entry->seg_size = cpu_to_le32(TRBS_PER_SEGMENT); entry->rsvd = 0; seg = seg->next; From patchwork Thu Jul 2 08:47:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Roese X-Patchwork-Id: 240611 List-Id: U-Boot discussion From: sr at denx.de (Stefan Roese) Date: Thu, 2 Jul 2020 10:47:32 +0200 Subject: [PATCH v1 3/4] usb: usb-uclass.c: Drop le16_to_cpu() as values are already swapped In-Reply-To: <20200702084733.2032531-1-sr@denx.de> References: <20200702084733.2032531-1-sr@denx.de> Message-ID: <20200702084733.2032531-4-sr@denx.de> These values are already swapped to CPU endianess, so swapping them again is a bug. Let's remove the swap here instead. Signed-off-by: Stefan Roese Cc: Bin Meng Cc: Marek Vasut --- drivers/usb/host/usb-uclass.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c index cb79dfbbd5..aa08d4ffc6 100644 --- a/drivers/usb/host/usb-uclass.c +++ b/drivers/usb/host/usb-uclass.c @@ -416,21 +416,21 @@ static int usb_match_device(const struct usb_device_descriptor *desc, const struct usb_device_id *id) { if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) && - id->idVendor != le16_to_cpu(desc->idVendor)) + id->idVendor != desc->idVendor) return 0; if ((id->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) && - id->idProduct != le16_to_cpu(desc->idProduct)) + id->idProduct != desc->idProduct) return 0; /* No need to test id->bcdDevice_lo != 0, since 0 is never greater than any unsigned number. */ if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO) && - (id->bcdDevice_lo > le16_to_cpu(desc->bcdDevice))) + (id->bcdDevice_lo > desc->bcdDevice)) return 0; if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI) && - (id->bcdDevice_hi < le16_to_cpu(desc->bcdDevice))) + (id->bcdDevice_hi < desc->bcdDevice)) return 0; if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_CLASS) && From patchwork Thu Jul 2 08:47:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Roese X-Patchwork-Id: 240613 List-Id: U-Boot discussion From: sr at denx.de (Stefan Roese) Date: Thu, 2 Jul 2020 10:47:33 +0200 Subject: [PATCH v1 4/4] usb: xhci: Add virt_to_phys() to support mapped platforms In-Reply-To: <20200702084733.2032531-1-sr@denx.de> References: <20200702084733.2032531-1-sr@denx.de> Message-ID: <20200702084733.2032531-5-sr@denx.de> Some platforms, like MIPS Octeon, use mapped addresses (virtual address != physical address). On these platforms we need to make sure, that the local virtual addresses are converted to physical (DMA) addresses for the xHCI controller. This patch adds the missing virt_to_phys() calls, so that the correct addresses are used. Signed-off-by: Stefan Roese Cc: Bin Meng Cc: Marek Vasut --- drivers/usb/host/xhci-mem.c | 19 +++++++++---------- drivers/usb/host/xhci-ring.c | 8 ++++---- drivers/usb/host/xhci.c | 3 +-- 3 files changed, 14 insertions(+), 16 deletions(-) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 3b805ecb9e..874caf4761 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -224,7 +224,7 @@ static void xhci_link_segments(struct xhci_segment *prev, return; prev->next = next; if (link_trbs) { - val_64 = (uintptr_t)next->trbs; + val_64 = virt_to_phys(next->trbs); prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr = cpu_to_le64(val_64); @@ -484,7 +484,7 @@ int xhci_alloc_virt_device(struct xhci_ctrl *ctrl, unsigned int slot_id) /* Allocate endpoint 0 ring */ virt_dev->eps[0].ring = xhci_ring_alloc(1, true); - byte_64 = (uintptr_t)(virt_dev->out_ctx->bytes); + byte_64 = virt_to_phys(virt_dev->out_ctx->bytes); /* Point to output device context in dcbaa. */ ctrl->dcbaa->dev_context_ptrs[slot_id] = cpu_to_le64(byte_64); @@ -509,7 +509,7 @@ int xhci_mem_init(struct xhci_ctrl *ctrl, struct xhci_hccr *hccr, uint64_t val_64; uint64_t trb_64; uint32_t val; - unsigned long deq; + uint64_t deq; int i; struct xhci_segment *seg; @@ -521,7 +521,7 @@ int xhci_mem_init(struct xhci_ctrl *ctrl, struct xhci_hccr *hccr, return -ENOMEM; } - val_64 = (uintptr_t)ctrl->dcbaa; + val_64 = virt_to_phys(ctrl->dcbaa); /* Set the pointer in DCBAA register */ xhci_writeq(&hcor->or_dcbaap, val_64); @@ -529,7 +529,7 @@ int xhci_mem_init(struct xhci_ctrl *ctrl, struct xhci_hccr *hccr, ctrl->cmd_ring = xhci_ring_alloc(1, true); /* Set the address in the Command Ring Control register */ - trb_64 = (uintptr_t)ctrl->cmd_ring->first_seg->trbs; + trb_64 = virt_to_phys(ctrl->cmd_ring->first_seg->trbs); val_64 = xhci_readq(&hcor->or_crcr); val_64 = (val_64 & (u64) CMD_RING_RSVD_BITS) | (trb_64 & (u64) ~CMD_RING_RSVD_BITS) | @@ -559,8 +559,7 @@ int xhci_mem_init(struct xhci_ctrl *ctrl, struct xhci_hccr *hccr, for (val = 0, seg = ctrl->event_ring->first_seg; val < ERST_NUM_SEGS; val++) { - trb_64 = 0; - trb_64 = (uintptr_t)seg->trbs; + trb_64 = virt_to_phys(seg->trbs); struct xhci_erst_entry *entry = &ctrl->erst.entries[val]; entry->seg_addr = cpu_to_le64(trb_64); entry->seg_size = cpu_to_le32(TRBS_PER_SEGMENT); @@ -570,7 +569,7 @@ int xhci_mem_init(struct xhci_ctrl *ctrl, struct xhci_hccr *hccr, xhci_flush_cache((uintptr_t)ctrl->erst.entries, ERST_NUM_SEGS * sizeof(struct xhci_erst_entry)); - deq = (unsigned long)ctrl->event_ring->dequeue; + deq = virt_to_phys(ctrl->event_ring->dequeue); /* Update HC event ring dequeue pointer */ xhci_writeq(&ctrl->ir_set->erst_dequeue, @@ -585,7 +584,7 @@ int xhci_mem_init(struct xhci_ctrl *ctrl, struct xhci_hccr *hccr, /* this is the event ring segment table pointer */ val_64 = xhci_readq(&ctrl->ir_set->erst_base); val_64 &= ERST_PTR_MASK; - val_64 |= ((uintptr_t)(ctrl->erst.entries) & ~ERST_PTR_MASK); + val_64 |= virt_to_phys(ctrl->erst.entries) & ~ERST_PTR_MASK; xhci_writeq(&ctrl->ir_set->erst_base, val_64); @@ -853,7 +852,7 @@ void xhci_setup_addressable_virt_dev(struct xhci_ctrl *ctrl, cpu_to_le32(((0 & MAX_BURST_MASK) << MAX_BURST_SHIFT) | ((3 & ERROR_COUNT_MASK) << ERROR_COUNT_SHIFT)); - trb_64 = (uintptr_t)virt_dev->eps[0].ring->first_seg->trbs; + trb_64 = virt_to_phys(virt_dev->eps[0].ring->first_seg->trbs); ep0_ctx->deq = cpu_to_le64(trb_64 | virt_dev->eps[0].ring->cycle_state); /* diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 86aeaab412..092ed6eaf1 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -275,7 +275,7 @@ void xhci_queue_command(struct xhci_ctrl *ctrl, u8 *ptr, u32 slot_id, u32 ep_index, trb_type cmd) { u32 fields[4]; - u64 val_64 = (uintptr_t)ptr; + u64 val_64 = virt_to_phys(ptr); BUG_ON(prepare_ring(ctrl, ctrl->cmd_ring, EP_STATE_RUNNING)); @@ -399,7 +399,7 @@ void xhci_acknowledge_event(struct xhci_ctrl *ctrl) /* Inform the hardware */ xhci_writeq(&ctrl->ir_set->erst_dequeue, - (uintptr_t)ctrl->event_ring->dequeue | ERST_EHB); + virt_to_phys(ctrl->event_ring->dequeue) | ERST_EHB); } /** @@ -577,7 +577,7 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe, u64 addr; int ret; u32 trb_fields[4]; - u64 val_64 = (uintptr_t)buffer; + u64 val_64 = virt_to_phys(buffer); debug("dev=%p, pipe=%lx, buffer=%p, length=%d\n", udev, pipe, buffer, length); @@ -876,7 +876,7 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, if (length > 0) { if (req->requesttype & USB_DIR_IN) field |= TRB_DIR_IN; - buf_64 = (uintptr_t)buffer; + buf_64 = virt_to_phys(buffer); trb_fields[0] = lower_32_bits(buf_64); trb_fields[1] = upper_32_bits(buf_64); diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index ebd2954571..f89e274b0d 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -600,8 +600,7 @@ static int xhci_set_configuration(struct usb_device *udev) cpu_to_le32(MAX_BURST(max_burst) | ERROR_COUNT(err_count)); - trb_64 = (uintptr_t) - virt_dev->eps[ep_index].ring->enqueue; + trb_64 = virt_to_phys(virt_dev->eps[ep_index].ring->enqueue); ep_ctx[ep_index]->deq = cpu_to_le64(trb_64 | virt_dev->eps[ep_index].ring->cycle_state);