From: Chunfeng Yun chunfeng.yun@mediatek.com

xhci versions 1.0 and later report the untransferred data remaining in a TD a bit differently than older hosts.

We used to have separate functions for these, and needed to check host version before calling the right function.

Now Mediatek host has an additional quirk on how it uses the TD Size field for remaining data. To prevent yet another function for calculating remainder we instead want to make one quirk friendly unified function.

Porting from the Linux: c840d6ce772d("xhci: create one unified function to calculate TRB TD remainder.") 124c39371114("xhci: use boolean to indicate last trb in td remainder calculation")

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- drivers/usb/host/xhci-ring.c | 105 +++++++++++++++++------------------ include/usb/xhci.h | 2 + 2 files changed, 52 insertions(+), 55 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 79bfc349f4..0f86b011f3 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -298,55 +298,52 @@ void xhci_queue_command(struct xhci_ctrl *ctrl, u8 *ptr, u32 slot_id, xhci_writel(&ctrl->dba->doorbell[0], DB_VALUE_HOST); }

-/** - * The TD size is the number of bytes remaining in the TD (including this TRB), - * right shifted by 10. - * It must fit in bits 21:17, so it can't be bigger than 31. +/* + * For xHCI 1.0 host controllers, TD size is the number of max packet sized + * packets remaining in the TD (*not* including this TRB). * - * @param remainder remaining packets to be sent - * @return remainder if remainder is less than max else max - */ -static u32 xhci_td_remainder(unsigned int remainder) -{ - u32 max = (1 << (21 - 17 + 1)) - 1; - - if ((remainder >> 10) >= max) - return max << 17; - else - return (remainder >> 10) << 17; -} - -/** - * Finds out the remanining packets to be sent + * Total TD packet count = total_packet_count = + * DIV_ROUND_UP(TD size in bytes / wMaxPacketSize) + * + * Packets transferred up to and including this TRB = packets_transferred = + * rounddown(total bytes transferred including this TRB / wMaxPacketSize) + * + * TD size = total_packet_count - packets_transferred * - * @param running_total total size sent so far + * For xHCI 0.96 and older, TD size field should be the remaining bytes + * including this TRB, right shifted by 10 + * + * For all hosts it must fit in bits 21:17, so it can't be bigger than 31. + * This is taken care of in the TRB_TD_SIZE() macro + * + * The last TRB in a TD must have the TD size set to zero. + * + * @param ctrl host controller data structure + * @param transferred total size sent so far * @param trb_buff_len length of the TRB Buffer - * @param total_packet_count total packet count - * @param maxpacketsize max packet size of current pipe - * @param num_trbs_left number of TRBs left to be processed - * @return 0 if running_total or trb_buff_len is 0, else remainder + * @param td_total_len total packet count + * @param maxp max packet size of current pipe + * @param more_trbs_coming indicate last trb in TD + * @return remainder */ -static u32 xhci_v1_0_td_remainder(int running_total, - int trb_buff_len, - unsigned int total_packet_count, - int maxpacketsize, - unsigned int num_trbs_left) +static u32 xhci_td_remainder(struct xhci_ctrl *ctrl, int transferred, + int trb_buff_len, unsigned int td_total_len, + int maxp, bool more_trbs_coming) { - int packets_transferred; + u32 total_packet_count; + + if (ctrl->hci_version < 0x100) + return ((td_total_len - transferred) >> 10);

/* One TRB with a zero-length data packet. */ - if (num_trbs_left == 0 || (running_total == 0 && trb_buff_len == 0)) + if (!more_trbs_coming || (transferred == 0 && trb_buff_len == 0) || + trb_buff_len == td_total_len) return 0;

- /* - * All the TRB queueing functions don't count the current TRB in - * running_total. - */ - packets_transferred = (running_total + trb_buff_len) / maxpacketsize; + total_packet_count = DIV_ROUND_UP(td_total_len, maxp);

- if ((total_packet_count - packets_transferred) > 31) - return 31 << 17; - return (total_packet_count - packets_transferred) << 17; + /* Queueing functions don't count the current TRB into transferred */ + return (total_packet_count - ((transferred + trb_buff_len) / maxp)); }

/** @@ -572,7 +569,7 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe, union xhci_trb *event;

int running_total, trb_buff_len; - unsigned int total_packet_count; + bool more_trbs_coming = true; int maxpacketsize; u64 addr; int ret; @@ -636,8 +633,6 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe, running_total = 0; maxpacketsize = usb_maxpacket(udev, pipe);

- total_packet_count = DIV_ROUND_UP(length, maxpacketsize); - /* How much data is in the first TRB? */ /* * How much data is (potentially) left before the 64KB boundary? @@ -672,27 +667,24 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe, * Chain all the TRBs together; clear the chain bit in the last * TRB to indicate it's the last TRB in the chain. */ - if (num_trbs > 1) + if (num_trbs > 1) { field |= TRB_CHAIN; - else + } else { field |= TRB_IOC; + more_trbs_coming = false; + }

/* Only set interrupt on short packet for IN endpoints */ if (usb_pipein(pipe)) field |= TRB_ISP;

/* Set the TRB length, TD size, and interrupter fields. */ - if (ctrl->hci_version < 0x100) - remainder = xhci_td_remainder(length - running_total); - else - remainder = xhci_v1_0_td_remainder(running_total, - trb_buff_len, - total_packet_count, - maxpacketsize, - num_trbs - 1); + remainder = xhci_td_remainder(ctrl, running_total, trb_buff_len, + length, maxpacketsize, + more_trbs_coming);

length_field = ((trb_buff_len & TRB_LEN_MASK) | - remainder | + TRB_TD_SIZE(remainder) | ((0 & TRB_INTR_TARGET_MASK) << TRB_INTR_TARGET_SHIFT));

@@ -764,6 +756,7 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, struct xhci_virt_device *virt_dev = ctrl->devs[slot_id]; struct xhci_ring *ep_ring; union xhci_trb *event; + u32 remainder;

debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u\n", req->request, req->request, @@ -866,12 +859,14 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, else field = (TRB_DATA << TRB_TYPE_SHIFT);

- length_field = (length & TRB_LEN_MASK) | xhci_td_remainder(length) | + remainder = xhci_td_remainder(ctrl, 0, length, length, + usb_maxpacket(udev, pipe), 1); + length_field = (length & TRB_LEN_MASK) | TRB_TD_SIZE(remainder) | ((0 & TRB_INTR_TARGET_MASK) << TRB_INTR_TARGET_SHIFT); debug("length_field = %d, length = %d," "xhci_td_remainder(length) = %d , TRB_INTR_TARGET(0) = %d\n", length_field, (length & TRB_LEN_MASK), - xhci_td_remainder(length), 0); + TRB_TD_SIZE(remainder), 0);

if (length > 0) { if (req->requesttype & USB_DIR_IN) diff --git a/include/usb/xhci.h b/include/usb/xhci.h index a3e5914b10..15926eb9f4 100644 --- a/include/usb/xhci.h +++ b/include/usb/xhci.h @@ -850,6 +850,8 @@ struct xhci_event_cmd { /* transfer_len bitmasks - bits 0:16 */ #define TRB_LEN(p) ((p) & 0x1ffff) #define TRB_LEN_MASK (0x1ffff) +/* TD Size, packets remaining in this TD, bits 21:17 (5 bits, so max 31) */ +#define TRB_TD_SIZE(p) (min((p), (u32)31) << 17) /* Interrupter Target - which MSI-X vector to target the completion event at */ #define TRB_INTR_TARGET_SHIFT (22) #define TRB_INTR_TARGET_MASK (0x3ff)

From: Chunfeng Yun chunfeng.yun@mediatek.com

Use HCS_MAX_PORTS(p) instead of ((p & HCS_MAX_PORTS_MASK) >> HCS_MAX_PORTS_SHIFT)

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- drivers/usb/host/xhci.c | 3 +-- include/usb/xhci.h | 2 -- 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 51edeb22c1..5f3a0fba4b 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1257,8 +1257,7 @@ static int xhci_lowlevel_init(struct xhci_ctrl *ctrl) return -ENOMEM;

reg = xhci_readl(&hccr->cr_hcsparams1); - descriptor.hub.bNbrPorts = ((reg & HCS_MAX_PORTS_MASK) >> - HCS_MAX_PORTS_SHIFT); + descriptor.hub.bNbrPorts = HCS_MAX_PORTS(reg); printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts);

/* Port Indicators */ diff --git a/include/usb/xhci.h b/include/usb/xhci.h index 3de46cd95e..cf4c0208b2 100644 --- a/include/usb/xhci.h +++ b/include/usb/xhci.h @@ -101,8 +101,6 @@ struct xhci_hccr { /* bits 8:18, Max Interrupters */ #define HCS_MAX_INTRS(p) (((p) >> 8) & 0x7ff) /* bits 24:31, Max Ports - max value is 0x7F = 127 ports */ -#define HCS_MAX_PORTS_SHIFT 24 -#define HCS_MAX_PORTS_MASK (0xff << HCS_MAX_PORTS_SHIFT) #define HCS_MAX_PORTS(p) (((p) >> 24) & 0xff)

/* HCSPARAMS2 - hcs_params2 - bitmasks */

From: Chunfeng Yun chunfeng.yun@mediatek.com

Use TRB_TYPE(p) instead of ((p) << TRB_TYPE_SHIFT)

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- drivers/usb/host/xhci-mem.c | 3 +-- drivers/usb/host/xhci-ring.c | 11 +++++------ include/usb/xhci.h | 1 - 3 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 1da0524aa0..d627aa5555 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -236,8 +236,7 @@ static void xhci_link_segments(struct xhci_segment *prev, */ val = le32_to_cpu(prev->trbs[TRBS_PER_SEGMENT-1].link.control); val &= ~TRB_TYPE_BITMASK; - val |= (TRB_LINK << TRB_TYPE_SHIFT); - + val |= TRB_TYPE(TRB_LINK); prev->trbs[TRBS_PER_SEGMENT-1].link.control = cpu_to_le32(val); } } diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index cf8b9d2362..87891fdb58 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -696,7 +696,7 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe, trb_fields[0] = lower_32_bits(addr); trb_fields[1] = upper_32_bits(addr); trb_fields[2] = length_field; - trb_fields[3] = field | (TRB_NORMAL << TRB_TYPE_SHIFT); + trb_fields[3] = field | TRB_TYPE(TRB_NORMAL);

queue_trb(ctrl, ring, (num_trbs > 1), trb_fields);

@@ -823,7 +823,7 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, /* Queue setup TRB - see section 6.4.1.2.1 */ /* FIXME better way to translate setup_packet into two u32 fields? */ field = 0; - field |= TRB_IDT | (TRB_SETUP << TRB_TYPE_SHIFT); + field |= TRB_IDT | TRB_TYPE(TRB_SETUP); if (start_cycle == 0) field |= 0x1;

@@ -860,9 +860,9 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, /* If there's data, queue data TRBs */ /* Only set interrupt on short packet for IN endpoints */ if (usb_pipein(pipe)) - field = TRB_ISP | (TRB_DATA << TRB_TYPE_SHIFT); + field = TRB_ISP | TRB_TYPE(TRB_DATA); else - field = (TRB_DATA << TRB_TYPE_SHIFT); + field = TRB_TYPE(TRB_DATA);

remainder = xhci_td_remainder(ctrl, 0, length, length, usb_maxpacket(udev, pipe), 1); @@ -904,8 +904,7 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, trb_fields[2] = ((0 & TRB_INTR_TARGET_MASK) << TRB_INTR_TARGET_SHIFT); /* Event on completion */ trb_fields[3] = field | TRB_IOC | - (TRB_STATUS << TRB_TYPE_SHIFT) | - ep_ring->cycle_state; + TRB_TYPE(TRB_STATUS) | ep_ring->cycle_state;

queue_trb(ctrl, ep_ring, false, trb_fields);

diff --git a/include/usb/xhci.h b/include/usb/xhci.h index cf4c0208b2..bdba51df59 100644 --- a/include/usb/xhci.h +++ b/include/usb/xhci.h @@ -903,7 +903,6 @@ union xhci_trb { /* TRB bit mask */ #define TRB_TYPE_BITMASK (0xfc00) #define TRB_TYPE(p) ((p) << 10) -#define TRB_TYPE_SHIFT (10) #define TRB_FIELD_TO_TYPE(p) (((p) & TRB_TYPE_BITMASK) >> 10)

/* TRB type IDs */

From: Chunfeng Yun chunfeng.yun@mediatek.com

Use TRB_INTR_TARGET(x) instead of (((x) & TRB_INTR_TARGET_MASK) << TRB_INTR_TARGET_SHIFT)

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- drivers/usb/host/xhci-ring.c | 10 ++++------ include/usb/xhci.h | 2 -- 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 87891fdb58..16d2e02cfa 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -690,8 +690,7 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe,

length_field = ((trb_buff_len & TRB_LEN_MASK) | TRB_TD_SIZE(remainder) | - ((0 & TRB_INTR_TARGET_MASK) << - TRB_INTR_TARGET_SHIFT)); + TRB_INTR_TARGET(0));

trb_fields[0] = lower_32_bits(addr); trb_fields[1] = upper_32_bits(addr); @@ -849,8 +848,7 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, trb_fields[1] = le16_to_cpu(req->index) | le16_to_cpu(req->length) << 16; /* TRB_LEN | (TRB_INTR_TARGET) */ - trb_fields[2] = (8 | ((0 & TRB_INTR_TARGET_MASK) << - TRB_INTR_TARGET_SHIFT)); + trb_fields[2] = (8 | TRB_INTR_TARGET(0)); /* Immediate data in pointer */ trb_fields[3] = field; queue_trb(ctrl, ep_ring, true, trb_fields); @@ -867,7 +865,7 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, remainder = xhci_td_remainder(ctrl, 0, length, length, usb_maxpacket(udev, pipe), 1); length_field = (length & TRB_LEN_MASK) | TRB_TD_SIZE(remainder) | - ((0 & TRB_INTR_TARGET_MASK) << TRB_INTR_TARGET_SHIFT); + TRB_INTR_TARGET(0); debug("length_field = %d, length = %d," "xhci_td_remainder(length) = %d , TRB_INTR_TARGET(0) = %d\n", length_field, (length & TRB_LEN_MASK), @@ -901,7 +899,7 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe,

trb_fields[0] = 0; trb_fields[1] = 0; - trb_fields[2] = ((0 & TRB_INTR_TARGET_MASK) << TRB_INTR_TARGET_SHIFT); + trb_fields[2] = TRB_INTR_TARGET(0); /* Event on completion */ trb_fields[3] = field | TRB_IOC | TRB_TYPE(TRB_STATUS) | ep_ring->cycle_state; diff --git a/include/usb/xhci.h b/include/usb/xhci.h index bdba51df59..ca3d99b954 100644 --- a/include/usb/xhci.h +++ b/include/usb/xhci.h @@ -851,8 +851,6 @@ struct xhci_event_cmd { /* TD Size, packets remaining in this TD, bits 21:17 (5 bits, so max 31) */ #define TRB_TD_SIZE(p) (min((p), (u32)31) << 17) /* Interrupter Target - which MSI-X vector to target the completion event at */ -#define TRB_INTR_TARGET_SHIFT (22) -#define TRB_INTR_TARGET_MASK (0x3ff) #define TRB_INTR_TARGET(p) (((p) & 0x3ff) << 22) #define GET_INTR_TARGET(p) (((p) >> 22) & 0x3ff) #define TRB_TBC(p) (((p) & 0x3) << 7)

From: Chunfeng Yun chunfeng.yun@mediatek.com

Use TRB_TX_TYPE() instead of (TRB_DATA_OUT/IN << TRB_TX_TYPE_SHIFT)

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- drivers/usb/host/xhci-ring.c | 4 ++-- include/usb/xhci.h | 1 - 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 99c84f95b3..ccf2a35b9f 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -830,9 +830,9 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, if (ctrl->hci_version >= 0x100 || ctrl->quirks & XHCI_MTK_HOST) { if (length > 0) { if (req->requesttype & USB_DIR_IN) - field |= (TRB_DATA_IN << TRB_TX_TYPE_SHIFT); + field |= TRB_TX_TYPE(TRB_DATA_IN); else - field |= (TRB_DATA_OUT << TRB_TX_TYPE_SHIFT); + field |= TRB_TX_TYPE(TRB_DATA_OUT); } }

diff --git a/include/usb/xhci.h b/include/usb/xhci.h index 35c66042ba..07b1aebc69 100644 --- a/include/usb/xhci.h +++ b/include/usb/xhci.h @@ -879,7 +879,6 @@ struct xhci_event_cmd { /* Control transfer TRB specific fields */ #define TRB_DIR_IN (1<<16) #define TRB_TX_TYPE(p) ((p) << 16) -#define TRB_TX_TYPE_SHIFT (16) #define TRB_DATA_OUT 2 #define TRB_DATA_IN 3

From: Chunfeng Yun chunfeng.yun@mediatek.com

Use macros with parameter to fill ep_info2, then some macros for MASK and SHIFT can be removed

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- drivers/usb/host/xhci-mem.c | 13 ++++--------- drivers/usb/host/xhci.c | 3 +-- include/usb/xhci.h | 5 ----- 3 files changed, 5 insertions(+), 16 deletions(-)

diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 6292542210..0b49614995 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -830,20 +830,17 @@ void xhci_setup_addressable_virt_dev(struct xhci_ctrl *ctrl,

switch (speed) { case USB_SPEED_SUPER: - ep0_ctx->ep_info2 |= cpu_to_le32(((512 & MAX_PACKET_MASK) << - MAX_PACKET_SHIFT)); + ep0_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(512)); debug("Setting Packet size = 512bytes\n"); break; case USB_SPEED_HIGH: /* USB core guesses at a 64-byte max packet first for FS devices */ case USB_SPEED_FULL: - ep0_ctx->ep_info2 |= cpu_to_le32(((64 & MAX_PACKET_MASK) << - MAX_PACKET_SHIFT)); + ep0_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(64)); debug("Setting Packet size = 64bytes\n"); break; case USB_SPEED_LOW: - ep0_ctx->ep_info2 |= cpu_to_le32(((8 & MAX_PACKET_MASK) << - MAX_PACKET_SHIFT)); + ep0_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(8)); debug("Setting Packet size = 8bytes\n"); break; default: @@ -852,9 +849,7 @@ void xhci_setup_addressable_virt_dev(struct xhci_ctrl *ctrl, }

/* EP 0 can handle "burst" sizes of 1, so Max Burst Size field is 0 */ - ep0_ctx->ep_info2 |= - cpu_to_le32(((0 & MAX_BURST_MASK) << MAX_BURST_SHIFT) | - ((3 & ERROR_COUNT_MASK) << ERROR_COUNT_SHIFT)); + ep0_ctx->ep_info2 |= cpu_to_le32(MAX_BURST(0) | ERROR_COUNT(3));

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.c b/drivers/usb/host/xhci.c index 6244f25c33..fe30101d93 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -831,8 +831,7 @@ int xhci_check_maxpacket(struct usb_device *udev) ctrl->devs[slot_id]->out_ctx, ep_index); in_ctx = ctrl->devs[slot_id]->in_ctx; ep_ctx = xhci_get_ep_ctx(ctrl, in_ctx, ep_index); - ep_ctx->ep_info2 &= cpu_to_le32(~((0xffff & MAX_PACKET_MASK) - << MAX_PACKET_SHIFT)); + ep_ctx->ep_info2 &= cpu_to_le32(~MAX_PACKET(MAX_PACKET_MASK)); ep_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(max_packet_size));

/* diff --git a/include/usb/xhci.h b/include/usb/xhci.h index c534297cc0..e1d382369a 100644 --- a/include/usb/xhci.h +++ b/include/usb/xhci.h @@ -632,8 +632,6 @@ struct xhci_ep_ctx { */ #define FORCE_EVENT (0x1) #define ERROR_COUNT(p) (((p) & 0x3) << 1) -#define ERROR_COUNT_SHIFT (1) -#define ERROR_COUNT_MASK (0x3) #define CTX_TO_EP_TYPE(p) (((p) >> 3) & 0x7) #define EP_TYPE(p) ((p) << 3) #define ISOC_OUT_EP 1 @@ -646,13 +644,10 @@ struct xhci_ep_ctx { /* bit 6 reserved */ /* bit 7 is Host Initiate Disable - for disabling stream selection */ #define MAX_BURST(p) (((p)&0xff) << 8) -#define MAX_BURST_MASK (0xff) -#define MAX_BURST_SHIFT (8) #define CTX_TO_MAX_BURST(p) (((p) >> 8) & 0xff) #define MAX_PACKET(p) (((p)&0xffff) << 16) #define MAX_PACKET_MASK (0xffff) #define MAX_PACKET_DECODED(p) (((p) >> 16) & 0xffff) -#define MAX_PACKET_SHIFT (16)

/* Get max packet size from ep desc. Bit 10..0 specify the max packet size. * USB2.0 spec 9.6.6.

On 9/2/20 8:13 AM, Frank Wunderlich wrote:

From: Chunfeng Yun chunfeng.yun@mediatek.com

Add a member to save xHCI version, it's used some times.

Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com

drivers/usb/host/xhci-ring.c | 4 ++-- drivers/usb/host/xhci.c | 1 + include/usb/xhci.h | 1 + 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 092ed6eaf1..79bfc349f4 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -682,7 +682,7 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe, field |= TRB_ISP;

/* Set the TRB length, TD size, and interrupter fields. */

• if (HC_VERSION(xhci_readl(&ctrl->hccr->cr_capbase)) < 0x100)
  

• if (ctrl->hci_version < 0x100)
  remainder = xhci_td_remainder(length - running_total);
  

  else remainder = xhci_v1_0_td_remainder(running_total,

@@ -830,7 +830,7 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe, field |= 0x1;

/* xHCI 1.0 6.4.1.2.1: Transfer Type field */

• if (HC_VERSION(xhci_readl(&ctrl->hccr->cr_capbase)) >= 0x100) {

• if (ctrl->hci_version >= 0x100) { if (length > 0) { if (req->requesttype & USB_DIR_IN) field |= (TRB_DATA_IN << TRB_TX_TYPE_SHIFT);

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 126dabc11b..4be1411243 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1283,6 +1283,7 @@ static int xhci_lowlevel_init(struct xhci_ctrl *ctrl)

reg = HC_VERSION(xhci_readl(&hccr->cr_capbase)); printf("USB XHCI %x.%02x\n", reg >> 8, reg & 0xff);

• ctrl->hci_version = reg;

  return 0;

} diff --git a/include/usb/xhci.h b/include/usb/xhci.h index 7d34103fd5..a3e5914b10 100644 --- a/include/usb/xhci.h +++ b/include/usb/xhci.h @@ -1227,6 +1227,7 @@ struct xhci_ctrl { struct xhci_scratchpad *scratchpad; struct xhci_virt_device *devs[MAX_HC_SLOTS]; int rootdev;

• u16 hci_version;

};

unsigned long trb_addr(struct xhci_segment *seg, union xhci_trb *trb);

+CC Bin