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Commit 48e0d373 authored by Chunfeng Yun's avatar Chunfeng Yun Committed by Greg Kroah-Hartman
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usb: mtu3: supports new QMU format 



In order to support U3gen2 ISOC transfer upto 96DPs, extend
the data buffer length.

Signed-off-by: default avatarChunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 09befc32

drivers/usb/mtu3/mtu3.h

+6 −5
Original line number Diff line number Diff line
@@ -148,22 +148,23 @@ struct mtu3_fifo_info { 
 *	bit0: Hardware Own (HWO)

 *	bit1: Buffer Descriptor Present (BDP), always 0, BD is not supported

 *	bit2: Bypass (BPS), 1: HW skips this GPD if HWO = 1

 *	bit6: [EL] Zero Length Packet (ZLP), moved from @dw3_info[29]

 *	bit7: Interrupt On Completion (IOC)

 *	bit[31:16]: allow data buffer length (RX ONLY),

 *	bit[31:16]: ([EL] bit[31:12]) allow data buffer length (RX ONLY),

 *		the buffer length of the data to receive

 *	bit[23:16]: extension address (TX ONLY),

 *	bit[23:16]: ([EL] bit[31:24]) extension address (TX ONLY),

 *		lower 4 bits are extension bits of @buffer,

 *		upper 4 bits are extension bits of @next_gpd

 * @next_gpd: Physical address of the next GPD

 * @buffer: Physical address of the data buffer

 * @dw3_info:

 *	bit[15:0]: data buffer length,

 *	bit[15:0]: ([EL] bit[19:0]) data buffer length,

 *		(TX): the buffer length of the data to transmit

 *		(RX): The total length of data received

 *	bit[23:16]: extension address (RX ONLY),

 *	bit[23:16]: ([EL] bit[31:24]) extension address (RX ONLY),

 *		lower 4 bits are extension bits of @buffer,

 *		upper 4 bits are extension bits of @next_gpd

 *	bit29: Zero Length Packet (ZLP) (TX ONLY)

 *	bit29: ([EL] abandoned) Zero Length Packet (ZLP) (TX ONLY)

 */

struct qmu_gpd {

	__le32 dw0_info;

drivers/usb/mtu3/mtu3_core.c

+5 −0
Original line number Diff line number Diff line
@@ -601,6 +601,10 @@ static void mtu3_regs_init(struct mtu3 *mtu) 
	mtu3_clrbits(mbase, U3D_MISC_CTRL, VBUS_FRC_EN | VBUS_ON);

	/* enable automatical HWRW from L1 */

	mtu3_setbits(mbase, U3D_POWER_MANAGEMENT, LPM_HRWE);



	/* use new QMU format when HW version >= 0x1003 */

	if (mtu->gen2cp)

		mtu3_writel(mbase, U3D_QFCR, ~0x0);

}



static irqreturn_t mtu3_link_isr(struct mtu3 *mtu)
@@ -755,6 +759,7 @@ static int mtu3_hw_init(struct mtu3 *mtu) 


	value = mtu3_readl(mtu->ippc_base, U3D_SSUSB_IP_TRUNK_VERS);

	mtu->hw_version = IP_TRUNK_VERS(value);

	mtu->gen2cp = !!(mtu->hw_version >= MTU3_TRUNK_VERS_1003);



	value = mtu3_readl(mtu->ippc_base, U3D_SSUSB_IP_DEV_CAP);

	mtu->is_u3_ip = !!SSUSB_IP_DEV_U3_PORT_NUM(value);

drivers/usb/mtu3/mtu3_gadget.c

+4 −2
Original line number Diff line number Diff line
@@ -278,10 +278,12 @@ static int mtu3_gadget_queue(struct usb_ep *ep, 
		__func__, mep->is_in ? "TX" : "RX", mreq->epnum, ep->name,

		mreq, ep->maxpacket, mreq->request.length);



	if (req->length > GPD_BUF_SIZE) {

	if (req->length > GPD_BUF_SIZE ||

	    (mtu->gen2cp && req->length > GPD_BUF_SIZE_EL)) {

		dev_warn(mtu->dev,

			"req length > supported MAX:%d requested:%d\n",

			GPD_BUF_SIZE, req->length);

			mtu->gen2cp ? GPD_BUF_SIZE_EL : GPD_BUF_SIZE,

			req->length);

		return -EOPNOTSUPP;

	}

drivers/usb/mtu3/mtu3_hw_regs.h

+1 −0
Original line number Diff line number Diff line
@@ -49,6 +49,7 @@ 
#define U3D_QCR1		(SSUSB_DEV_BASE + 0x0404)

#define U3D_QCR2		(SSUSB_DEV_BASE + 0x0408)

#define U3D_QCR3		(SSUSB_DEV_BASE + 0x040C)

#define U3D_QFCR		(SSUSB_DEV_BASE + 0x0428)

#define U3D_TXQHIAR1		(SSUSB_DEV_BASE + 0x0484)

#define U3D_RXQHIAR1		(SSUSB_DEV_BASE + 0x04C4)

drivers/usb/mtu3/mtu3_qmu.c

+49 −15
Original line number Diff line number Diff line
@@ -28,14 +28,42 @@ 
#define GPD_FLAGS_HWO	BIT(0)

#define GPD_FLAGS_BDP	BIT(1)

#define GPD_FLAGS_BPS	BIT(2)

#define GPD_FLAGS_ZLP	BIT(6)

#define GPD_FLAGS_IOC	BIT(7)

#define GET_GPD_HWO(gpd)	(le32_to_cpu((gpd)->dw0_info) & GPD_FLAGS_HWO)



#define GPD_RX_BUF_LEN(x)	(((x) & 0xffff) << 16)

#define GPD_DATA_LEN(x)		((x) & 0xffff)

#define GPD_RX_BUF_LEN_OG(x)	(((x) & 0xffff) << 16)

#define GPD_RX_BUF_LEN_EL(x)	(((x) & 0xfffff) << 12)

#define GPD_RX_BUF_LEN(mtu, x)	\

({				\

	typeof(x) x_ = (x);	\

	((mtu)->gen2cp) ? GPD_RX_BUF_LEN_EL(x_) : GPD_RX_BUF_LEN_OG(x_); \

})



#define GPD_DATA_LEN_OG(x)	((x) & 0xffff)

#define GPD_DATA_LEN_EL(x)	((x) & 0xfffff)

#define GPD_DATA_LEN(mtu, x)	\

({				\

	typeof(x) x_ = (x);	\

	((mtu)->gen2cp) ? GPD_DATA_LEN_EL(x_) : GPD_DATA_LEN_OG(x_); \

})



#define GPD_EXT_FLAG_ZLP	BIT(29)

#define GPD_EXT_NGP(x)		(((x) & 0xf) << 20)

#define GPD_EXT_BUF(x)		(((x) & 0xf) << 16)

#define GPD_EXT_NGP_OG(x)	(((x) & 0xf) << 20)

#define GPD_EXT_BUF_OG(x)	(((x) & 0xf) << 16)

#define GPD_EXT_NGP_EL(x)	(((x) & 0xf) << 28)

#define GPD_EXT_BUF_EL(x)	(((x) & 0xf) << 24)

#define GPD_EXT_NGP(mtu, x)	\

({				\

	typeof(x) x_ = (x);	\

	((mtu)->gen2cp) ? GPD_EXT_NGP_EL(x_) : GPD_EXT_NGP_OG(x_); \

})



#define GPD_EXT_BUF(mtu, x)	\

({				\

	typeof(x) x_ = (x);	\

	((mtu)->gen2cp) ? GPD_EXT_BUF_EL(x_) : GPD_EXT_BUF_OG(x_); \

})



#define HILO_GEN64(hi, lo) (((u64)(hi) << 32) + (lo))

#define HILO_DMA(hi, lo)	\
@@ -217,13 +245,14 @@ static int mtu3_prepare_tx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq) 
	struct mtu3_gpd_ring *ring = &mep->gpd_ring;

	struct qmu_gpd *gpd = ring->enqueue;

	struct usb_request *req = &mreq->request;

	struct mtu3 *mtu = mep->mtu;

	dma_addr_t enq_dma;

	u32 ext_addr;



	gpd->dw0_info = 0;	/* SW own it */

	gpd->buffer = cpu_to_le32(lower_32_bits(req->dma));

	ext_addr = GPD_EXT_BUF(upper_32_bits(req->dma));

	gpd->dw3_info = cpu_to_le32(GPD_DATA_LEN(req->length));

	ext_addr = GPD_EXT_BUF(mtu, upper_32_bits(req->dma));

	gpd->dw3_info = cpu_to_le32(GPD_DATA_LEN(mtu, req->length));



	/* get the next GPD */

	enq = advance_enq_gpd(ring);
@@ -233,11 +262,15 @@ static int mtu3_prepare_tx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq) 


	enq->dw0_info &= cpu_to_le32(~GPD_FLAGS_HWO);

	gpd->next_gpd = cpu_to_le32(lower_32_bits(enq_dma));

	ext_addr |= GPD_EXT_NGP(upper_32_bits(enq_dma));

	ext_addr |= GPD_EXT_NGP(mtu, upper_32_bits(enq_dma));

	gpd->dw0_info = cpu_to_le32(ext_addr);



	if (req->zero)

	if (req->zero) {

		if (mtu->gen2cp)

			gpd->dw0_info |= cpu_to_le32(GPD_FLAGS_ZLP);

		else

			gpd->dw3_info |= cpu_to_le32(GPD_EXT_FLAG_ZLP);

	}



	gpd->dw0_info |= cpu_to_le32(GPD_FLAGS_IOC | GPD_FLAGS_HWO);
@@ -252,13 +285,14 @@ static int mtu3_prepare_rx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq) 
	struct mtu3_gpd_ring *ring = &mep->gpd_ring;

	struct qmu_gpd *gpd = ring->enqueue;

	struct usb_request *req = &mreq->request;

	struct mtu3 *mtu = mep->mtu;

	dma_addr_t enq_dma;

	u32 ext_addr;



	gpd->dw0_info = 0;	/* SW own it */

	gpd->buffer = cpu_to_le32(lower_32_bits(req->dma));

	ext_addr = GPD_EXT_BUF(upper_32_bits(req->dma));

	gpd->dw0_info = cpu_to_le32(GPD_RX_BUF_LEN(req->length));

	ext_addr = GPD_EXT_BUF(mtu, upper_32_bits(req->dma));

	gpd->dw0_info = cpu_to_le32(GPD_RX_BUF_LEN(mtu, req->length));



	/* get the next GPD */

	enq = advance_enq_gpd(ring);
@@ -268,7 +302,7 @@ static int mtu3_prepare_rx_gpd(struct mtu3_ep *mep, struct mtu3_request *mreq) 


	enq->dw0_info &= cpu_to_le32(~GPD_FLAGS_HWO);

	gpd->next_gpd = cpu_to_le32(lower_32_bits(enq_dma));

	ext_addr |= GPD_EXT_NGP(upper_32_bits(enq_dma));

	ext_addr |= GPD_EXT_NGP(mtu, upper_32_bits(enq_dma));

	gpd->dw3_info = cpu_to_le32(ext_addr);

	gpd->dw0_info |= cpu_to_le32(GPD_FLAGS_IOC | GPD_FLAGS_HWO);
@@ -391,7 +425,7 @@ static void qmu_tx_zlp_error_handler(struct mtu3 *mtu, u8 epnum) 
	cur_gpd_dma = read_txq_cur_addr(mbase, epnum);

	gpd_current = gpd_dma_to_virt(ring, cur_gpd_dma);



	if (GPD_DATA_LEN(le32_to_cpu(gpd_current->dw3_info)) != 0) {

	if (GPD_DATA_LEN(mtu, le32_to_cpu(gpd_current->dw3_info)) != 0) {

		dev_err(mtu->dev, "TX EP%d buffer length error(!=0)\n", epnum);

		return;

	}
@@ -451,7 +485,7 @@ static void qmu_done_tx(struct mtu3 *mtu, u8 epnum) 
		}



		request = &mreq->request;

		request->actual = GPD_DATA_LEN(le32_to_cpu(gpd->dw3_info));

		request->actual = GPD_DATA_LEN(mtu, le32_to_cpu(gpd->dw3_info));

		mtu3_req_complete(mep, request, 0);



		gpd = advance_deq_gpd(ring);
@@ -489,7 +523,7 @@ static void qmu_done_rx(struct mtu3 *mtu, u8 epnum) 
		}

		req = &mreq->request;



		req->actual = GPD_DATA_LEN(le32_to_cpu(gpd->dw3_info));

		req->actual = GPD_DATA_LEN(mtu, le32_to_cpu(gpd->dw3_info));

		mtu3_req_complete(mep, req, 0);



		gpd = advance_deq_gpd(ring);