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linux/drivers/usb/cdns3/cdns3-gadget.h
Frank Li dce49449e0 usb: cdns3: allocate TX FIFO size according to composite EP number 
Some devices have USB compositions which may require multiple endpoints.
To get better performance, need bigger CDNS3_EP_BUF_SIZE.

But bigger CDNS3_EP_BUF_SIZE may exceed total hardware FIFO size when
multiple endpoints.

By introducing the check_config() callback, calculate CDNS3_EP_BUF_SIZE.

Move CDNS3_EP_BUF_SIZE into cnds3_device: ep_buf_size
Combine CDNS3_EP_ISO_SS_BURST and CDNS3_EP_ISO_HS_MULT into
cnds3_device:ep_iso_burst

Using a simple algorithm to calculate ep_buf_size.
ep_buf_size = ep_iso_burst = (onchip_buffers - 2k) / (number of IN EP +
1).

Test at 8qxp:

	Gadget			ep_buf_size

	RNDIS:				5
	RNDIS+ACM:			3
	Mass Storage + NCM + ACM	2

Previous CDNS3_EP_BUF_SIZE is 4, RNDIS + ACM will be failure because
exceed FIFO memory.

Acked-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20220509164055.1815081-1-Frank.Li@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-19 18:14:29 +02:00

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/* SPDX-License-Identifier: GPL-2.0 */
/*
* USBSS device controller driver header file
*
* Copyright (C) 2018-2019 Cadence.
* Copyright (C) 2017-2018 NXP
*
* Author: Pawel Laszczak <pawell@cadence.com>
* Pawel Jez <pjez@cadence.com>
* Peter Chen <peter.chen@nxp.com>
*/
#ifndef __LINUX_CDNS3_GADGET
#define __LINUX_CDNS3_GADGET
#include <linux/usb/gadget.h>
#include <linux/dma-direction.h>
/*
* USBSS-DEV register interface.
* This corresponds to the USBSS Device Controller Interface
*/
/**
* struct cdns3_usb_regs - device controller registers.
* @usb_conf: Global Configuration.
* @usb_sts: Global Status.
* @usb_cmd: Global Command.
* @usb_itpn: ITP/SOF number.
* @usb_lpm: Global Command.
* @usb_ien: USB Interrupt Enable.
* @usb_ists: USB Interrupt Status.
* @ep_sel: Endpoint Select.
* @ep_traddr: Endpoint Transfer Ring Address.
* @ep_cfg: Endpoint Configuration.
* @ep_cmd: Endpoint Command.
* @ep_sts: Endpoint Status.
* @ep_sts_sid: Endpoint Status.
* @ep_sts_en: Endpoint Status Enable.
* @drbl: Doorbell.
* @ep_ien: EP Interrupt Enable.
* @ep_ists: EP Interrupt Status.
* @usb_pwr: Global Power Configuration.
* @usb_conf2: Global Configuration 2.
* @usb_cap1: Capability 1.
* @usb_cap2: Capability 2.
* @usb_cap3: Capability 3.
* @usb_cap4: Capability 4.
* @usb_cap5: Capability 5.
* @usb_cap6: Capability 6.
* @usb_cpkt1: Custom Packet 1.
* @usb_cpkt2: Custom Packet 2.
* @usb_cpkt3: Custom Packet 3.
* @ep_dma_ext_addr: Upper address for DMA operations.
* @buf_addr: Address for On-chip Buffer operations.
* @buf_data: Data for On-chip Buffer operations.
* @buf_ctrl: On-chip Buffer Access Control.
* @dtrans: DMA Transfer Mode.
* @tdl_from_trb: Source of TD Configuration.
* @tdl_beh: TDL Behavior Configuration.
* @ep_tdl: Endpoint TDL.
* @tdl_beh2: TDL Behavior 2 Configuration.
* @dma_adv_td: DMA Advance TD Configuration.
* @reserved1: Reserved.
* @cfg_regs: Configuration.
* @reserved2: Reserved.
* @dma_axi_ctrl: AXI Control.
* @dma_axi_id: AXI ID register.
* @dma_axi_cap: AXI Capability.
* @dma_axi_ctrl0: AXI Control 0.
* @dma_axi_ctrl1: AXI Control 1.
*/
struct cdns3_usb_regs {
__le32 usb_conf;
__le32 usb_sts;
__le32 usb_cmd;
__le32 usb_itpn;
__le32 usb_lpm;
__le32 usb_ien;
__le32 usb_ists;
__le32 ep_sel;
__le32 ep_traddr;
__le32 ep_cfg;
__le32 ep_cmd;
__le32 ep_sts;
__le32 ep_sts_sid;
__le32 ep_sts_en;
__le32 drbl;
__le32 ep_ien;
__le32 ep_ists;
__le32 usb_pwr;
__le32 usb_conf2;
__le32 usb_cap1;
__le32 usb_cap2;
__le32 usb_cap3;
__le32 usb_cap4;
__le32 usb_cap5;
__le32 usb_cap6;
__le32 usb_cpkt1;
__le32 usb_cpkt2;
__le32 usb_cpkt3;
__le32 ep_dma_ext_addr;
__le32 buf_addr;
__le32 buf_data;
__le32 buf_ctrl;
__le32 dtrans;
__le32 tdl_from_trb;
__le32 tdl_beh;
__le32 ep_tdl;
__le32 tdl_beh2;
__le32 dma_adv_td;
__le32 reserved1[26];
__le32 cfg_reg1;
__le32 dbg_link1;
__le32 dbg_link2;
__le32 cfg_regs[74];
__le32 reserved2[51];
__le32 dma_axi_ctrl;
__le32 dma_axi_id;
__le32 dma_axi_cap;
__le32 dma_axi_ctrl0;
__le32 dma_axi_ctrl1;
};
/* USB_CONF - bitmasks */
/* Reset USB device configuration. */
#define USB_CONF_CFGRST BIT(0)
/* Set Configuration. */
#define USB_CONF_CFGSET BIT(1)
/* Disconnect USB device in SuperSpeed. */
#define USB_CONF_USB3DIS BIT(3)
/* Disconnect USB device in HS/FS */
#define USB_CONF_USB2DIS BIT(4)
/* Little Endian access - default */
#define USB_CONF_LENDIAN BIT(5)
/*
* Big Endian access. Driver assume that byte order for
* SFRs access always is as Little Endian so this bit
* is not used.
*/
#define USB_CONF_BENDIAN BIT(6)
/* Device software reset. */
#define USB_CONF_SWRST BIT(7)
/* Singular DMA transfer mode. Only for VER < DEV_VER_V3*/
#define USB_CONF_DSING BIT(8)
/* Multiple DMA transfers mode. Only for VER < DEV_VER_V3 */
#define USB_CONF_DMULT BIT(9)
/* DMA clock turn-off enable. */
#define USB_CONF_DMAOFFEN BIT(10)
/* DMA clock turn-off disable. */
#define USB_CONF_DMAOFFDS BIT(11)
/* Clear Force Full Speed. */
#define USB_CONF_CFORCE_FS BIT(12)
/* Set Force Full Speed. */
#define USB_CONF_SFORCE_FS BIT(13)
/* Device enable. */
#define USB_CONF_DEVEN BIT(14)
/* Device disable. */
#define USB_CONF_DEVDS BIT(15)
/* L1 LPM state entry enable (used in HS/FS mode). */
#define USB_CONF_L1EN BIT(16)
/* L1 LPM state entry disable (used in HS/FS mode). */
#define USB_CONF_L1DS BIT(17)
/* USB 2.0 clock gate disable. */
#define USB_CONF_CLK2OFFEN BIT(18)
/* USB 2.0 clock gate enable. */
#define USB_CONF_CLK2OFFDS BIT(19)
/* L0 LPM state entry request (used in HS/FS mode). */
#define USB_CONF_LGO_L0 BIT(20)
/* USB 3.0 clock gate disable. */
#define USB_CONF_CLK3OFFEN BIT(21)
/* USB 3.0 clock gate enable. */
#define USB_CONF_CLK3OFFDS BIT(22)
/* Bit 23 is reserved*/
/* U1 state entry enable (used in SS mode). */
#define USB_CONF_U1EN BIT(24)
/* U1 state entry disable (used in SS mode). */
#define USB_CONF_U1DS BIT(25)
/* U2 state entry enable (used in SS mode). */
#define USB_CONF_U2EN BIT(26)
/* U2 state entry disable (used in SS mode). */
#define USB_CONF_U2DS BIT(27)
/* U0 state entry request (used in SS mode). */
#define USB_CONF_LGO_U0 BIT(28)
/* U1 state entry request (used in SS mode). */
#define USB_CONF_LGO_U1 BIT(29)
/* U2 state entry request (used in SS mode). */
#define USB_CONF_LGO_U2 BIT(30)
/* SS.Inactive state entry request (used in SS mode) */
#define USB_CONF_LGO_SSINACT BIT(31)
/* USB_STS - bitmasks */
/*
* Configuration status.
* 1 - device is in the configured state.
* 0 - device is not configured.
*/
#define USB_STS_CFGSTS_MASK BIT(0)
#define USB_STS_CFGSTS(p) ((p) & USB_STS_CFGSTS_MASK)
/*
* On-chip memory overflow.
* 0 - On-chip memory status OK.
* 1 - On-chip memory overflow.
*/
#define USB_STS_OV_MASK BIT(1)
#define USB_STS_OV(p) ((p) & USB_STS_OV_MASK)
/*
* SuperSpeed connection status.
* 0 - USB in SuperSpeed mode disconnected.
* 1 - USB in SuperSpeed mode connected.
*/
#define USB_STS_USB3CONS_MASK BIT(2)
#define USB_STS_USB3CONS(p) ((p) & USB_STS_USB3CONS_MASK)
/*
* DMA transfer configuration status.
* 0 - single request.
* 1 - multiple TRB chain
* Supported only for controller version < DEV_VER_V3
*/
#define USB_STS_DTRANS_MASK BIT(3)
#define USB_STS_DTRANS(p) ((p) & USB_STS_DTRANS_MASK)
/*
* Device speed.
* 0 - Undefined (value after reset).
* 1 - Low speed
* 2 - Full speed
* 3 - High speed
* 4 - Super speed
*/
#define USB_STS_USBSPEED_MASK GENMASK(6, 4)
#define USB_STS_USBSPEED(p) (((p) & USB_STS_USBSPEED_MASK) >> 4)
#define USB_STS_LS (0x1 << 4)
#define USB_STS_FS (0x2 << 4)
#define USB_STS_HS (0x3 << 4)
#define USB_STS_SS (0x4 << 4)
#define DEV_UNDEFSPEED(p) (((p) & USB_STS_USBSPEED_MASK) == (0x0 << 4))
#define DEV_LOWSPEED(p) (((p) & USB_STS_USBSPEED_MASK) == USB_STS_LS)
#define DEV_FULLSPEED(p) (((p) & USB_STS_USBSPEED_MASK) == USB_STS_FS)
#define DEV_HIGHSPEED(p) (((p) & USB_STS_USBSPEED_MASK) == USB_STS_HS)
#define DEV_SUPERSPEED(p) (((p) & USB_STS_USBSPEED_MASK) == USB_STS_SS)
/*
* Endianness for SFR access.
* 0 - Little Endian order (default after hardware reset).
* 1 - Big Endian order
*/
#define USB_STS_ENDIAN_MASK BIT(7)
#define USB_STS_ENDIAN(p) ((p) & USB_STS_ENDIAN_MASK)
/*
* HS/FS clock turn-off status.
* 0 - hsfs clock is always on.
* 1 - hsfs clock turn-off in L2 (HS/FS mode) is enabled
* (default after hardware reset).
*/
#define USB_STS_CLK2OFF_MASK BIT(8)
#define USB_STS_CLK2OFF(p) ((p) & USB_STS_CLK2OFF_MASK)
/*
* PCLK clock turn-off status.
* 0 - pclk clock is always on.
* 1 - pclk clock turn-off in U3 (SS mode) is enabled
* (default after hardware reset).
*/
#define USB_STS_CLK3OFF_MASK BIT(9)
#define USB_STS_CLK3OFF(p) ((p) & USB_STS_CLK3OFF_MASK)
/*
* Controller in reset state.
* 0 - Internal reset is active.
* 1 - Internal reset is not active and controller is fully operational.
*/
#define USB_STS_IN_RST_MASK BIT(10)
#define USB_STS_IN_RST(p) ((p) & USB_STS_IN_RST_MASK)
/*
* Status of the "TDL calculation basing on TRB" feature.
* 0 - disabled
* 1 - enabled
* Supported only for DEV_VER_V2 controller version.
*/
#define USB_STS_TDL_TRB_ENABLED BIT(11)
/*
* Device enable Status.
* 0 - USB device is disabled (VBUS input is disconnected from internal logic).
* 1 - USB device is enabled (VBUS input is connected to the internal logic).
*/
#define USB_STS_DEVS_MASK BIT(14)
#define USB_STS_DEVS(p) ((p) & USB_STS_DEVS_MASK)
/*
* Address status.
* 0 - USB device is default state.
* 1 - USB device is at least in address state.
*/
#define USB_STS_ADDRESSED_MASK BIT(15)
#define USB_STS_ADDRESSED(p) ((p) & USB_STS_ADDRESSED_MASK)
/*
* L1 LPM state enable status (used in HS/FS mode).
* 0 - Entering to L1 LPM state disabled.
* 1 - Entering to L1 LPM state enabled.
*/
#define USB_STS_L1ENS_MASK BIT(16)
#define USB_STS_L1ENS(p) ((p) & USB_STS_L1ENS_MASK)
/*
* Internal VBUS connection status (used both in HS/FS and SS mode).
* 0 - internal VBUS is not detected.
* 1 - internal VBUS is detected.
*/
#define USB_STS_VBUSS_MASK BIT(17)
#define USB_STS_VBUSS(p) ((p) & USB_STS_VBUSS_MASK)
/*
* HS/FS LPM state (used in FS/HS mode).
* 0 - L0 State
* 1 - L1 State
* 2 - L2 State
* 3 - L3 State
*/
#define USB_STS_LPMST_MASK GENMASK(19, 18)
#define DEV_L0_STATE(p) (((p) & USB_STS_LPMST_MASK) == (0x0 << 18))
#define DEV_L1_STATE(p) (((p) & USB_STS_LPMST_MASK) == (0x1 << 18))
#define DEV_L2_STATE(p) (((p) & USB_STS_LPMST_MASK) == (0x2 << 18))
#define DEV_L3_STATE(p) (((p) & USB_STS_LPMST_MASK) == (0x3 << 18))
/*
* Disable HS status (used in FS/HS mode).
* 0 - the disconnect bit for HS/FS mode is set .
* 1 - the disconnect bit for HS/FS mode is not set.
*/
#define USB_STS_USB2CONS_MASK BIT(20)
#define USB_STS_USB2CONS(p) ((p) & USB_STS_USB2CONS_MASK)
/*
* HS/FS mode connection status (used in FS/HS mode).
* 0 - High Speed operations in USB2.0 (FS/HS) mode not disabled.
* 1 - High Speed operations in USB2.0 (FS/HS).
*/
#define USB_STS_DISABLE_HS_MASK BIT(21)
#define USB_STS_DISABLE_HS(p) ((p) & USB_STS_DISABLE_HS_MASK)
/*
* U1 state enable status (used in SS mode).
* 0 - Entering to U1 state disabled.
* 1 - Entering to U1 state enabled.
*/
#define USB_STS_U1ENS_MASK BIT(24)
#define USB_STS_U1ENS(p) ((p) & USB_STS_U1ENS_MASK)
/*
* U2 state enable status (used in SS mode).
* 0 - Entering to U2 state disabled.
* 1 - Entering to U2 state enabled.
*/
#define USB_STS_U2ENS_MASK BIT(25)
#define USB_STS_U2ENS(p) ((p) & USB_STS_U2ENS_MASK)
/*
* SuperSpeed Link LTSSM state. This field reflects USBSS-DEV current
* SuperSpeed link state
*/
#define USB_STS_LST_MASK GENMASK(29, 26)
#define DEV_LST_U0 (((p) & USB_STS_LST_MASK) == (0x0 << 26))
#define DEV_LST_U1 (((p) & USB_STS_LST_MASK) == (0x1 << 26))
#define DEV_LST_U2 (((p) & USB_STS_LST_MASK) == (0x2 << 26))
#define DEV_LST_U3 (((p) & USB_STS_LST_MASK) == (0x3 << 26))
#define DEV_LST_DISABLED (((p) & USB_STS_LST_MASK) == (0x4 << 26))
#define DEV_LST_RXDETECT (((p) & USB_STS_LST_MASK) == (0x5 << 26))
#define DEV_LST_INACTIVE (((p) & USB_STS_LST_MASK) == (0x6 << 26))
#define DEV_LST_POLLING (((p) & USB_STS_LST_MASK) == (0x7 << 26))
#define DEV_LST_RECOVERY (((p) & USB_STS_LST_MASK) == (0x8 << 26))
#define DEV_LST_HOT_RESET (((p) & USB_STS_LST_MASK) == (0x9 << 26))
#define DEV_LST_COMP_MODE (((p) & USB_STS_LST_MASK) == (0xa << 26))
#define DEV_LST_LB_STATE (((p) & USB_STS_LST_MASK) == (0xb << 26))
/*
* DMA clock turn-off status.
* 0 - DMA clock is always on (default after hardware reset).
* 1 - DMA clock turn-off in U1, U2 and U3 (SS mode) is enabled.
*/
#define USB_STS_DMAOFF_MASK BIT(30)
#define USB_STS_DMAOFF(p) ((p) & USB_STS_DMAOFF_MASK)
/*
* SFR Endian status.
* 0 - Little Endian order (default after hardware reset).
* 1 - Big Endian order.
*/
#define USB_STS_ENDIAN2_MASK BIT(31)
#define USB_STS_ENDIAN2(p) ((p) & USB_STS_ENDIAN2_MASK)
/* USB_CMD - bitmasks */
/* Set Function Address */
#define USB_CMD_SET_ADDR BIT(0)
/*
* Function Address This field is saved to the device only when the field
* SET_ADDR is set '1 ' during write to USB_CMD register.
* Software is responsible for entering the address of the device during
* SET_ADDRESS request service. This field should be set immediately after
* the SETUP packet is decoded, and prior to confirmation of the status phase
*/
#define USB_CMD_FADDR_MASK GENMASK(7, 1)
#define USB_CMD_FADDR(p) (((p) << 1) & USB_CMD_FADDR_MASK)
/* Send Function Wake Device Notification TP (used only in SS mode). */
#define USB_CMD_SDNFW BIT(8)
/* Set Test Mode (used only in HS/FS mode). */
#define USB_CMD_STMODE BIT(9)
/* Test mode selector (used only in HS/FS mode) */
#define USB_STS_TMODE_SEL_MASK GENMASK(11, 10)
#define USB_STS_TMODE_SEL(p) (((p) << 10) & USB_STS_TMODE_SEL_MASK)
/*
* Send Latency Tolerance Message Device Notification TP (used only
* in SS mode).
*/
#define USB_CMD_SDNLTM BIT(12)
/* Send Custom Transaction Packet (used only in SS mode) */
#define USB_CMD_SPKT BIT(13)
/*Device Notification 'Function Wake' - Interface value (only in SS mode. */
#define USB_CMD_DNFW_INT_MASK GENMASK(23, 16)
#define USB_STS_DNFW_INT(p) (((p) << 16) & USB_CMD_DNFW_INT_MASK)
/*
* Device Notification 'Latency Tolerance Message' -373 BELT value [7:0]
* (used only in SS mode).
*/
#define USB_CMD_DNLTM_BELT_MASK GENMASK(27, 16)
#define USB_STS_DNLTM_BELT(p) (((p) << 16) & USB_CMD_DNLTM_BELT_MASK)
/* USB_ITPN - bitmasks */
/*
* ITP(SS) / SOF (HS/FS) number
* In SS mode this field represent number of last ITP received from host.
* In HS/FS mode this field represent number of last SOF received from host.
*/
#define USB_ITPN_MASK GENMASK(13, 0)
#define USB_ITPN(p) ((p) & USB_ITPN_MASK)
/* USB_LPM - bitmasks */
/* Host Initiated Resume Duration. */
#define USB_LPM_HIRD_MASK GENMASK(3, 0)
#define USB_LPM_HIRD(p) ((p) & USB_LPM_HIRD_MASK)
/* Remote Wakeup Enable (bRemoteWake). */
#define USB_LPM_BRW BIT(4)
/* USB_IEN - bitmasks */
/* SS connection interrupt enable */
#define USB_IEN_CONIEN BIT(0)
/* SS disconnection interrupt enable. */
#define USB_IEN_DISIEN BIT(1)
/* USB SS warm reset interrupt enable. */
#define USB_IEN_UWRESIEN BIT(2)
/* USB SS hot reset interrupt enable */
#define USB_IEN_UHRESIEN BIT(3)
/* SS link U3 state enter interrupt enable (suspend).*/
#define USB_IEN_U3ENTIEN BIT(4)
/* SS link U3 state exit interrupt enable (wakeup). */
#define USB_IEN_U3EXTIEN BIT(5)
/* SS link U2 state enter interrupt enable.*/
#define USB_IEN_U2ENTIEN BIT(6)
/* SS link U2 state exit interrupt enable.*/
#define USB_IEN_U2EXTIEN BIT(7)
/* SS link U1 state enter interrupt enable.*/
#define USB_IEN_U1ENTIEN BIT(8)
/* SS link U1 state exit interrupt enable.*/
#define USB_IEN_U1EXTIEN BIT(9)
/* ITP/SOF packet detected interrupt enable.*/
#define USB_IEN_ITPIEN BIT(10)
/* Wakeup interrupt enable.*/
#define USB_IEN_WAKEIEN BIT(11)
/* Send Custom Packet interrupt enable.*/
#define USB_IEN_SPKTIEN BIT(12)
/* HS/FS mode connection interrupt enable.*/
#define USB_IEN_CON2IEN BIT(16)
/* HS/FS mode disconnection interrupt enable.*/
#define USB_IEN_DIS2IEN BIT(17)
/* USB reset (HS/FS mode) interrupt enable.*/
#define USB_IEN_U2RESIEN BIT(18)
/* LPM L2 state enter interrupt enable.*/
#define USB_IEN_L2ENTIEN BIT(20)
/* LPM L2 state exit interrupt enable.*/
#define USB_IEN_L2EXTIEN BIT(21)
/* LPM L1 state enter interrupt enable.*/
#define USB_IEN_L1ENTIEN BIT(24)
/* LPM L1 state exit interrupt enable.*/
#define USB_IEN_L1EXTIEN BIT(25)
/* Configuration reset interrupt enable.*/
#define USB_IEN_CFGRESIEN BIT(26)
/* Start of the USB SS warm reset interrupt enable.*/
#define USB_IEN_UWRESSIEN BIT(28)
/* End of the USB SS warm reset interrupt enable.*/
#define USB_IEN_UWRESEIEN BIT(29)
#define USB_IEN_INIT (USB_IEN_U2RESIEN | USB_ISTS_DIS2I | USB_IEN_CON2IEN \
| USB_IEN_UHRESIEN | USB_IEN_UWRESIEN | USB_IEN_DISIEN \
| USB_IEN_CONIEN | USB_IEN_U3EXTIEN | USB_IEN_L2ENTIEN \
| USB_IEN_L2EXTIEN | USB_IEN_L1ENTIEN | USB_IEN_U3ENTIEN)
/* USB_ISTS - bitmasks */
/* SS Connection detected. */
#define USB_ISTS_CONI BIT(0)
/* SS Disconnection detected. */
#define USB_ISTS_DISI BIT(1)
/* UUSB warm reset detectede. */
#define USB_ISTS_UWRESI BIT(2)
/* USB hot reset detected. */
#define USB_ISTS_UHRESI BIT(3)
/* U3 link state enter detected (suspend).*/
#define USB_ISTS_U3ENTI BIT(4)
/* U3 link state exit detected (wakeup). */
#define USB_ISTS_U3EXTI BIT(5)
/* U2 link state enter detected.*/
#define USB_ISTS_U2ENTI BIT(6)
/* U2 link state exit detected.*/
#define USB_ISTS_U2EXTI BIT(7)
/* U1 link state enter detected.*/
#define USB_ISTS_U1ENTI BIT(8)
/* U1 link state exit detected.*/
#define USB_ISTS_U1EXTI BIT(9)
/* ITP/SOF packet detected.*/
#define USB_ISTS_ITPI BIT(10)
/* Wakeup detected.*/
#define USB_ISTS_WAKEI BIT(11)
/* Send Custom Packet detected.*/
#define USB_ISTS_SPKTI BIT(12)
/* HS/FS mode connection detected.*/
#define USB_ISTS_CON2I BIT(16)
/* HS/FS mode disconnection detected.*/
#define USB_ISTS_DIS2I BIT(17)
/* USB reset (HS/FS mode) detected.*/
#define USB_ISTS_U2RESI BIT(18)
/* LPM L2 state enter detected.*/
#define USB_ISTS_L2ENTI BIT(20)
/* LPM L2 state exit detected.*/
#define USB_ISTS_L2EXTI BIT(21)
/* LPM L1 state enter detected.*/
#define USB_ISTS_L1ENTI BIT(24)
/* LPM L1 state exit detected.*/
#define USB_ISTS_L1EXTI BIT(25)
/* USB configuration reset detected.*/
#define USB_ISTS_CFGRESI BIT(26)
/* Start of the USB warm reset detected.*/
#define USB_ISTS_UWRESSI BIT(28)
/* End of the USB warm reset detected.*/
#define USB_ISTS_UWRESEI BIT(29)
/* USB_SEL - bitmasks */
#define EP_SEL_EPNO_MASK GENMASK(3, 0)
/* Endpoint number. */
#define EP_SEL_EPNO(p) ((p) & EP_SEL_EPNO_MASK)
/* Endpoint direction bit - 0 - OUT, 1 - IN. */
#define EP_SEL_DIR BIT(7)
#define select_ep_in(nr) (EP_SEL_EPNO(p) | EP_SEL_DIR)
#define select_ep_out (EP_SEL_EPNO(p))
/* EP_TRADDR - bitmasks */
/* Transfer Ring address. */
#define EP_TRADDR_TRADDR(p) ((p))
/* EP_CFG - bitmasks */
/* Endpoint enable */
#define EP_CFG_ENABLE BIT(0)
/*
* Endpoint type.
* 1 - isochronous
* 2 - bulk
* 3 - interrupt
*/
#define EP_CFG_EPTYPE_MASK GENMASK(2, 1)
#define EP_CFG_EPTYPE(p) (((p) << 1) & EP_CFG_EPTYPE_MASK)
/* Stream support enable (only in SS mode). */
#define EP_CFG_STREAM_EN BIT(3)
/* TDL check (only in SS mode for BULK EP). */
#define EP_CFG_TDL_CHK BIT(4)
/* SID check (only in SS mode for BULK OUT EP). */
#define EP_CFG_SID_CHK BIT(5)
/* DMA transfer endianness. */
#define EP_CFG_EPENDIAN BIT(7)
/* Max burst size (used only in SS mode). */
#define EP_CFG_MAXBURST_MASK GENMASK(11, 8)
#define EP_CFG_MAXBURST(p) (((p) << 8) & EP_CFG_MAXBURST_MASK)
#define EP_CFG_MAXBURST_MAX 15
/* ISO max burst. */
#define EP_CFG_MULT_MASK GENMASK(15, 14)
#define EP_CFG_MULT(p) (((p) << 14) & EP_CFG_MULT_MASK)
#define EP_CFG_MULT_MAX 2
/* ISO max burst. */
#define EP_CFG_MAXPKTSIZE_MASK GENMASK(26, 16)
#define EP_CFG_MAXPKTSIZE(p) (((p) << 16) & EP_CFG_MAXPKTSIZE_MASK)
/* Max number of buffered packets. */
#define EP_CFG_BUFFERING_MASK GENMASK(31, 27)
#define EP_CFG_BUFFERING(p) (((p) << 27) & EP_CFG_BUFFERING_MASK)
#define EP_CFG_BUFFERING_MAX 15
/* EP_CMD - bitmasks */
/* Endpoint reset. */
#define EP_CMD_EPRST BIT(0)
/* Endpoint STALL set. */
#define EP_CMD_SSTALL BIT(1)
/* Endpoint STALL clear. */
#define EP_CMD_CSTALL BIT(2)
/* Send ERDY TP. */
#define EP_CMD_ERDY BIT(3)
/* Request complete. */
#define EP_CMD_REQ_CMPL BIT(5)
/* Transfer descriptor ready. */
#define EP_CMD_DRDY BIT(6)
/* Data flush. */
#define EP_CMD_DFLUSH BIT(7)
/*
* Transfer Descriptor Length write (used only for Bulk Stream capable
* endpoints in SS mode).
* Bit Removed from DEV_VER_V3 controller version.
*/
#define EP_CMD_STDL BIT(8)
/*
* Transfer Descriptor Length (used only in SS mode for bulk endpoints).
* Bits Removed from DEV_VER_V3 controller version.
*/
#define EP_CMD_TDL_MASK GENMASK(15, 9)
#define EP_CMD_TDL_SET(p) (((p) << 9) & EP_CMD_TDL_MASK)
#define EP_CMD_TDL_GET(p) (((p) & EP_CMD_TDL_MASK) >> 9)
#define EP_CMD_TDL_MAX (EP_CMD_TDL_MASK >> 9)
/* ERDY Stream ID value (used in SS mode). */
#define EP_CMD_ERDY_SID_MASK GENMASK(31, 16)
#define EP_CMD_ERDY_SID(p) (((p) << 16) & EP_CMD_ERDY_SID_MASK)
/* EP_STS - bitmasks */
/* Setup transfer complete. */
#define EP_STS_SETUP BIT(0)
/* Endpoint STALL status. */
#define EP_STS_STALL(p) ((p) & BIT(1))
/* Interrupt On Complete. */
#define EP_STS_IOC BIT(2)
/* Interrupt on Short Packet. */
#define EP_STS_ISP BIT(3)
/* Transfer descriptor missing. */
#define EP_STS_DESCMIS BIT(4)
/* Stream Rejected (used only in SS mode) */
#define EP_STS_STREAMR BIT(5)
/* EXIT from MOVE DATA State (used only for stream transfers in SS mode). */
#define EP_STS_MD_EXIT BIT(6)
/* TRB error. */
#define EP_STS_TRBERR BIT(7)
/* Not ready (used only in SS mode). */
#define EP_STS_NRDY BIT(8)
/* DMA busy bit. */
#define EP_STS_DBUSY BIT(9)
/* Endpoint Buffer Empty */
#define EP_STS_BUFFEMPTY(p) ((p) & BIT(10))
/* Current Cycle Status */
#define EP_STS_CCS(p) ((p) & BIT(11))
/* Prime (used only in SS mode. */
#define EP_STS_PRIME BIT(12)
/* Stream error (used only in SS mode). */
#define EP_STS_SIDERR BIT(13)
/* OUT size mismatch. */
#define EP_STS_OUTSMM BIT(14)
/* ISO transmission error. */
#define EP_STS_ISOERR BIT(15)
/* Host Packet Pending (only for SS mode). */
#define EP_STS_HOSTPP(p) ((p) & BIT(16))
/* Stream Protocol State Machine State (only for Bulk stream endpoints). */
#define EP_STS_SPSMST_MASK GENMASK(18, 17)
#define EP_STS_SPSMST_DISABLED(p) (((p) & EP_STS_SPSMST_MASK) >> 17)
#define EP_STS_SPSMST_IDLE(p) (((p) & EP_STS_SPSMST_MASK) >> 17)
#define EP_STS_SPSMST_START_STREAM(p) (((p) & EP_STS_SPSMST_MASK) >> 17)
#define EP_STS_SPSMST_MOVE_DATA(p) (((p) & EP_STS_SPSMST_MASK) >> 17)
/* Interrupt On Transfer complete. */
#define EP_STS_IOT BIT(19)
/* OUT queue endpoint number. */
#define EP_STS_OUTQ_NO_MASK GENMASK(27, 24)
#define EP_STS_OUTQ_NO(p) (((p) & EP_STS_OUTQ_NO_MASK) >> 24)
/* OUT queue valid flag. */
#define EP_STS_OUTQ_VAL_MASK BIT(28)
#define EP_STS_OUTQ_VAL(p) ((p) & EP_STS_OUTQ_VAL_MASK)
/* SETUP WAIT. */
#define EP_STS_STPWAIT BIT(31)
/* EP_STS_SID - bitmasks */
/* Stream ID (used only in SS mode). */
#define EP_STS_SID_MASK GENMASK(15, 0)
#define EP_STS_SID(p) ((p) & EP_STS_SID_MASK)
/* EP_STS_EN - bitmasks */
/* SETUP interrupt enable. */
#define EP_STS_EN_SETUPEN BIT(0)
/* OUT transfer missing descriptor enable. */
#define EP_STS_EN_DESCMISEN BIT(4)
/* Stream Rejected enable. */
#define EP_STS_EN_STREAMREN BIT(5)
/* Move Data Exit enable.*/
#define EP_STS_EN_MD_EXITEN BIT(6)
/* TRB enable. */
#define EP_STS_EN_TRBERREN BIT(7)
/* NRDY enable. */
#define EP_STS_EN_NRDYEN BIT(8)
/* Prime enable. */
#define EP_STS_EN_PRIMEEEN BIT(12)
/* Stream error enable. */
#define EP_STS_EN_SIDERREN BIT(13)
/* OUT size mismatch enable. */
#define EP_STS_EN_OUTSMMEN BIT(14)
/* ISO transmission error enable. */
#define EP_STS_EN_ISOERREN BIT(15)
/* Interrupt on Transmission complete enable. */
#define EP_STS_EN_IOTEN BIT(19)
/* Setup Wait interrupt enable. */
#define EP_STS_EN_STPWAITEN BIT(31)
/* DRBL- bitmasks */
#define DB_VALUE_BY_INDEX(index) (1 << (index))
#define DB_VALUE_EP0_OUT BIT(0)
#define DB_VALUE_EP0_IN BIT(16)
/* EP_IEN - bitmasks */
#define EP_IEN(index) (1 << (index))
#define EP_IEN_EP_OUT0 BIT(0)
#define EP_IEN_EP_IN0 BIT(16)
/* EP_ISTS - bitmasks */
#define EP_ISTS(index) (1 << (index))
#define EP_ISTS_EP_OUT0 BIT(0)
#define EP_ISTS_EP_IN0 BIT(16)
/* USB_PWR- bitmasks */
/*Power Shut Off capability enable*/
#define PUSB_PWR_PSO_EN BIT(0)
/*Power Shut Off capability disable*/
#define PUSB_PWR_PSO_DS BIT(1)
/*
* Enables turning-off Reference Clock.
* This bit is optional and implemented only when support for OTG is
* implemented (indicated by OTG_READY bit set to '1').
*/
#define PUSB_PWR_STB_CLK_SWITCH_EN BIT(8)
/*
* Status bit indicating that operation required by STB_CLK_SWITCH_EN write
* is completed
*/
#define PUSB_PWR_STB_CLK_SWITCH_DONE BIT(9)
/* This bit informs if Fast Registers Access is enabled. */
#define PUSB_PWR_FST_REG_ACCESS_STAT BIT(30)
/* Fast Registers Access Enable. */
#define PUSB_PWR_FST_REG_ACCESS BIT(31)
/* USB_CONF2- bitmasks */
/*
* Writing 1 disables TDL calculation basing on TRB feature in controller
* for DMULT mode.
* Bit supported only for DEV_VER_V2 version.
*/
#define USB_CONF2_DIS_TDL_TRB BIT(1)
/*
* Writing 1 enables TDL calculation basing on TRB feature in controller
* for DMULT mode.
* Bit supported only for DEV_VER_V2 version.
*/
#define USB_CONF2_EN_TDL_TRB BIT(2)
/* USB_CAP1- bitmasks */
/*
* SFR Interface type
* These field reflects type of SFR interface implemented:
* 0x0 - OCP
* 0x1 - AHB,
* 0x2 - PLB
* 0x3 - AXI
* 0x4-0xF - reserved
*/
#define USB_CAP1_SFR_TYPE_MASK GENMASK(3, 0)
#define DEV_SFR_TYPE_OCP(p) (((p) & USB_CAP1_SFR_TYPE_MASK) == 0x0)
#define DEV_SFR_TYPE_AHB(p) (((p) & USB_CAP1_SFR_TYPE_MASK) == 0x1)
#define DEV_SFR_TYPE_PLB(p) (((p) & USB_CAP1_SFR_TYPE_MASK) == 0x2)
#define DEV_SFR_TYPE_AXI(p) (((p) & USB_CAP1_SFR_TYPE_MASK) == 0x3)
/*
* SFR Interface width
* These field reflects width of SFR interface implemented:
* 0x0 - 8 bit interface,
* 0x1 - 16 bit interface,
* 0x2 - 32 bit interface
* 0x3 - 64 bit interface
* 0x4-0xF - reserved
*/
#define USB_CAP1_SFR_WIDTH_MASK GENMASK(7, 4)
#define DEV_SFR_WIDTH_8(p) (((p) & USB_CAP1_SFR_WIDTH_MASK) == (0x0 << 4))
#define DEV_SFR_WIDTH_16(p) (((p) & USB_CAP1_SFR_WIDTH_MASK) == (0x1 << 4))
#define DEV_SFR_WIDTH_32(p) (((p) & USB_CAP1_SFR_WIDTH_MASK) == (0x2 << 4))
#define DEV_SFR_WIDTH_64(p) (((p) & USB_CAP1_SFR_WIDTH_MASK) == (0x3 << 4))
/*
* DMA Interface type
* These field reflects type of DMA interface implemented:
* 0x0 - OCP
* 0x1 - AHB,
* 0x2 - PLB
* 0x3 - AXI
* 0x4-0xF - reserved
*/
#define USB_CAP1_DMA_TYPE_MASK GENMASK(11, 8)
#define DEV_DMA_TYPE_OCP(p) (((p) & USB_CAP1_DMA_TYPE_MASK) == (0x0 << 8))
#define DEV_DMA_TYPE_AHB(p) (((p) & USB_CAP1_DMA_TYPE_MASK) == (0x1 << 8))
#define DEV_DMA_TYPE_PLB(p) (((p) & USB_CAP1_DMA_TYPE_MASK) == (0x2 << 8))
#define DEV_DMA_TYPE_AXI(p) (((p) & USB_CAP1_DMA_TYPE_MASK) == (0x3 << 8))
/*
* DMA Interface width
* These field reflects width of DMA interface implemented:
* 0x0 - reserved,
* 0x1 - reserved,
* 0x2 - 32 bit interface
* 0x3 - 64 bit interface
* 0x4-0xF - reserved
*/
#define USB_CAP1_DMA_WIDTH_MASK GENMASK(15, 12)
#define DEV_DMA_WIDTH_32(p) (((p) & USB_CAP1_DMA_WIDTH_MASK) == (0x2 << 12))
#define DEV_DMA_WIDTH_64(p) (((p) & USB_CAP1_DMA_WIDTH_MASK) == (0x3 << 12))
/*
* USB3 PHY Interface type
* These field reflects type of USB3 PHY interface implemented:
* 0x0 - USB PIPE,
* 0x1 - RMMI,
* 0x2-0xF - reserved
*/
#define USB_CAP1_U3PHY_TYPE_MASK GENMASK(19, 16)
#define DEV_U3PHY_PIPE(p) (((p) & USB_CAP1_U3PHY_TYPE_MASK) == (0x0 << 16))
#define DEV_U3PHY_RMMI(p) (((p) & USB_CAP1_U3PHY_TYPE_MASK) == (0x1 << 16))
/*
* USB3 PHY Interface width
* These field reflects width of USB3 PHY interface implemented:
* 0x0 - 8 bit PIPE interface,
* 0x1 - 16 bit PIPE interface,
* 0x2 - 32 bit PIPE interface,
* 0x3 - 64 bit PIPE interface
* 0x4-0xF - reserved
* Note: When SSIC interface is implemented this field shows the width of
* internal PIPE interface. The RMMI interface is always 20bit wide.
*/
#define USB_CAP1_U3PHY_WIDTH_MASK GENMASK(23, 20)
#define DEV_U3PHY_WIDTH_8(p) \
(((p) & USB_CAP1_U3PHY_WIDTH_MASK) == (0x0 << 20))
#define DEV_U3PHY_WIDTH_16(p) \
(((p) & USB_CAP1_U3PHY_WIDTH_MASK) == (0x1 << 16))
#define DEV_U3PHY_WIDTH_32(p) \
(((p) & USB_CAP1_U3PHY_WIDTH_MASK) == (0x2 << 20))
#define DEV_U3PHY_WIDTH_64(p) \
(((p) & USB_CAP1_U3PHY_WIDTH_MASK) == (0x3 << 16))
/*
* USB2 PHY Interface enable
* These field informs if USB2 PHY interface is implemented:
* 0x0 - interface NOT implemented,
* 0x1 - interface implemented
*/
#define USB_CAP1_U2PHY_EN(p) ((p) & BIT(24))
/*
* USB2 PHY Interface type
* These field reflects type of USB2 PHY interface implemented:
* 0x0 - UTMI,
* 0x1 - ULPI
*/
#define DEV_U2PHY_ULPI(p) ((p) & BIT(25))
/*
* USB2 PHY Interface width
* These field reflects width of USB2 PHY interface implemented:
* 0x0 - 8 bit interface,
* 0x1 - 16 bit interface,
* Note: The ULPI interface is always 8bit wide.
*/
#define DEV_U2PHY_WIDTH_16(p) ((p) & BIT(26))
/*
* OTG Ready
* 0x0 - pure device mode
* 0x1 - some features and ports for CDNS USB OTG controller are implemented.
*/
#define USB_CAP1_OTG_READY(p) ((p) & BIT(27))
/*
* When set, indicates that controller supports automatic internal TDL
* calculation basing on the size provided in TRB (TRB[22:17]) for DMULT mode
* Supported only for DEV_VER_V2 controller version.
*/
#define USB_CAP1_TDL_FROM_TRB(p) ((p) & BIT(28))
/* USB_CAP2- bitmasks */
/*
* The actual size of the connected On-chip RAM memory in kB:
* - 0 means 256 kB (max supported mem size)
* - value other than 0 reflects the mem size in kB
*/
#define USB_CAP2_ACTUAL_MEM_SIZE(p) ((p) & GENMASK(7, 0))
/*
* Max supported mem size
* These field reflects width of on-chip RAM address bus width,
* which determines max supported mem size:
* 0x0-0x7 - reserved,
* 0x8 - support for 4kB mem,
* 0x9 - support for 8kB mem,
* 0xA - support for 16kB mem,
* 0xB - support for 32kB mem,
* 0xC - support for 64kB mem,
* 0xD - support for 128kB mem,
* 0xE - support for 256kB mem,
* 0xF - reserved
*/
#define USB_CAP2_MAX_MEM_SIZE(p) ((p) & GENMASK(11, 8))
/* USB_CAP3- bitmasks */
#define EP_IS_IMPLEMENTED(reg, index) ((reg) & (1 << (index)))
/* USB_CAP4- bitmasks */
#define EP_SUPPORT_ISO(reg, index) ((reg) & (1 << (index)))
/* USB_CAP5- bitmasks */
#define EP_SUPPORT_STREAM(reg, index) ((reg) & (1 << (index)))
/* USB_CAP6- bitmasks */
/* The USBSS-DEV Controller Internal build number. */
#define GET_DEV_BASE_VERSION(p) ((p) & GENMASK(23, 0))
/* The USBSS-DEV Controller version number. */
#define GET_DEV_CUSTOM_VERSION(p) ((p) & GENMASK(31, 24))
#define DEV_VER_NXP_V1 0x00024502
#define DEV_VER_TI_V1 0x00024509
#define DEV_VER_V2 0x0002450C
#define DEV_VER_V3 0x0002450d
/* DBG_LINK1- bitmasks */
/*
* LFPS_MIN_DET_U1_EXIT value This parameter configures the minimum
* time required for decoding the received LFPS as an LFPS.U1_Exit.
*/
#define DBG_LINK1_LFPS_MIN_DET_U1_EXIT(p) ((p) & GENMASK(7, 0))
/*
* LFPS_MIN_GEN_U1_EXIT value This parameter configures the minimum time for
* phytxelecidle deassertion when LFPS.U1_Exit
*/
#define DBG_LINK1_LFPS_MIN_GEN_U1_EXIT_MASK GENMASK(15, 8)
#define DBG_LINK1_LFPS_MIN_GEN_U1_EXIT(p) (((p) << 8) & GENMASK(15, 8))
/*
* RXDET_BREAK_DIS value This parameter configures terminating the Far-end
* Receiver termination detection sequence:
* 0: it is possible that USBSS_DEV will terminate Farend receiver
* termination detection sequence
* 1: USBSS_DEV will not terminate Far-end receiver termination
* detection sequence
*/
#define DBG_LINK1_RXDET_BREAK_DIS BIT(16)
/* LFPS_GEN_PING value This parameter configures the LFPS.Ping generation */
#define DBG_LINK1_LFPS_GEN_PING(p) (((p) << 17) & GENMASK(21, 17))
/*
* Set the LFPS_MIN_DET_U1_EXIT value Writing '1' to this bit writes the
* LFPS_MIN_DET_U1_EXIT field value to the device. This bit is automatically
* cleared. Writing '0' has no effect
*/
#define DBG_LINK1_LFPS_MIN_DET_U1_EXIT_SET BIT(24)
/*
* Set the LFPS_MIN_GEN_U1_EXIT value. Writing '1' to this bit writes the
* LFPS_MIN_GEN_U1_EXIT field value to the device. This bit is automatically
* cleared. Writing '0' has no effect
*/
#define DBG_LINK1_LFPS_MIN_GEN_U1_EXIT_SET BIT(25)
/*
* Set the RXDET_BREAK_DIS value Writing '1' to this bit writes
* the RXDET_BREAK_DIS field value to the device. This bit is automatically
* cleared. Writing '0' has no effect
*/
#define DBG_LINK1_RXDET_BREAK_DIS_SET BIT(26)
/*
* Set the LFPS_GEN_PING_SET value Writing '1' to this bit writes
* the LFPS_GEN_PING field value to the device. This bit is automatically
* cleared. Writing '0' has no effect."
*/
#define DBG_LINK1_LFPS_GEN_PING_SET BIT(27)
/* DMA_AXI_CTRL- bitmasks */
/* The mawprot pin configuration. */
#define DMA_AXI_CTRL_MARPROT(p) ((p) & GENMASK(2, 0))
/* The marprot pin configuration. */
#define DMA_AXI_CTRL_MAWPROT(p) (((p) & GENMASK(2, 0)) << 16)
#define DMA_AXI_CTRL_NON_SECURE 0x02
#define gadget_to_cdns3_device(g) (container_of(g, struct cdns3_device, gadget))
#define ep_to_cdns3_ep(ep) (container_of(ep, struct cdns3_endpoint, endpoint))
/*-------------------------------------------------------------------------*/
/*
* USBSS-DEV DMA interface.
*/
#define TRBS_PER_SEGMENT 600
#define ISO_MAX_INTERVAL 10
#define MAX_TRB_LENGTH BIT(16)
#if TRBS_PER_SEGMENT < 2
#error "Incorrect TRBS_PER_SEGMENT. Minimal Transfer Ring size is 2."
#endif
#define TRBS_PER_STREAM_SEGMENT 2
#if TRBS_PER_STREAM_SEGMENT < 2
#error "Incorrect TRBS_PER_STREAMS_SEGMENT. Minimal Transfer Ring size is 2."
#endif
/*
*Only for ISOC endpoints - maximum number of TRBs is calculated as
* pow(2, bInterval-1) * number of usb requests. It is limitation made by
* driver to save memory. Controller must prepare TRB for each ITP even
* if bInterval > 1. It's the reason why driver needs so many TRBs for
* isochronous endpoints.
*/
#define TRBS_PER_ISOC_SEGMENT (ISO_MAX_INTERVAL * 8)
#define GET_TRBS_PER_SEGMENT(ep_type) ((ep_type) == USB_ENDPOINT_XFER_ISOC ? \
TRBS_PER_ISOC_SEGMENT : TRBS_PER_SEGMENT)
/**
* struct cdns3_trb - represent Transfer Descriptor block.
* @buffer: pointer to buffer data
* @length: length of data
* @control: control flags.
*
* This structure describes transfer block serviced by DMA module.
*/
struct cdns3_trb {
__le32 buffer;
__le32 length;
__le32 control;
};
#define TRB_SIZE (sizeof(struct cdns3_trb))
#define TRB_RING_SIZE (TRB_SIZE * TRBS_PER_SEGMENT)
#define TRB_STREAM_RING_SIZE (TRB_SIZE * TRBS_PER_STREAM_SEGMENT)
#define TRB_ISO_RING_SIZE (TRB_SIZE * TRBS_PER_ISOC_SEGMENT)
#define TRB_CTRL_RING_SIZE (TRB_SIZE * 2)
/* TRB bit mask */
#define TRB_TYPE_BITMASK GENMASK(15, 10)
#define TRB_TYPE(p) ((p) << 10)
#define TRB_FIELD_TO_TYPE(p) (((p) & TRB_TYPE_BITMASK) >> 10)
/* TRB type IDs */
/* bulk, interrupt, isoc , and control data stage */
#define TRB_NORMAL 1
/* TRB for linking ring segments */
#define TRB_LINK 6
/* Cycle bit - indicates TRB ownership by driver or hw*/
#define TRB_CYCLE BIT(0)
/*
* When set to '1', the device will toggle its interpretation of the Cycle bit
*/
#define TRB_TOGGLE BIT(1)
/*
* The controller will set it if OUTSMM (OUT size mismatch) is detected,
* this bit is for normal TRB
*/
#define TRB_SMM BIT(1)
/*
* Short Packet (SP). OUT EPs at DMULT=1 only. Indicates if the TRB was
* processed while USB short packet was received. No more buffers defined by
* the TD will be used. DMA will automatically advance to next TD.
* - Shall be set to 0 by Software when putting TRB on the Transfer Ring
* - Shall be set to 1 by Controller when Short Packet condition for this TRB
* is detected independent if ISP is set or not.
*/
#define TRB_SP BIT(1)
/* Interrupt on short packet*/
#define TRB_ISP BIT(2)
/*Setting this bit enables FIFO DMA operation mode*/
#define TRB_FIFO_MODE BIT(3)
/* Set PCIe no snoop attribute */
#define TRB_CHAIN BIT(4)
/* Interrupt on completion */
#define TRB_IOC BIT(5)
/* stream ID bitmasks. */
#define TRB_STREAM_ID_BITMASK GENMASK(31, 16)
#define TRB_STREAM_ID(p) ((p) << 16)
#define TRB_FIELD_TO_STREAMID(p) (((p) & TRB_STREAM_ID_BITMASK) >> 16)
/* Size of TD expressed in USB packets for HS/FS mode. */
#define TRB_TDL_HS_SIZE(p) (((p) << 16) & GENMASK(31, 16))
#define TRB_TDL_HS_SIZE_GET(p) (((p) & GENMASK(31, 16)) >> 16)
/* transfer_len bitmasks. */
#define TRB_LEN(p) ((p) & GENMASK(16, 0))
/* Size of TD expressed in USB packets for SS mode. */
#define TRB_TDL_SS_SIZE(p) (((p) << 17) & GENMASK(23, 17))
#define TRB_TDL_SS_SIZE_GET(p) (((p) & GENMASK(23, 17)) >> 17)
/* transfer_len bitmasks - bits 31:24 */
#define TRB_BURST_LEN(p) ((unsigned int)((p) << 24) & GENMASK(31, 24))
#define TRB_BURST_LEN_GET(p) (((p) & GENMASK(31, 24)) >> 24)
/* Data buffer pointer bitmasks*/
#define TRB_BUFFER(p) ((p) & GENMASK(31, 0))
/*-------------------------------------------------------------------------*/
/* Driver numeric constants */
/* Such declaration should be added to ch9.h */
#define USB_DEVICE_MAX_ADDRESS 127
/* Endpoint init values */
#define CDNS3_EP_MAX_PACKET_LIMIT 1024
#define CDNS3_EP_MAX_STREAMS 15
#define CDNS3_EP0_MAX_PACKET_LIMIT 512
/* All endpoints including EP0 */
#define CDNS3_ENDPOINTS_MAX_COUNT 32
#define CDNS3_EP_ZLP_BUF_SIZE 1024
#define CDNS3_MAX_NUM_DESCMISS_BUF 32
#define CDNS3_DESCMIS_BUF_SIZE 2048 /* Bytes */
#define CDNS3_WA2_NUM_BUFFERS 128
/*-------------------------------------------------------------------------*/
/* Used structs */
struct cdns3_device;
/**
* struct cdns3_endpoint - extended device side representation of USB endpoint.
* @endpoint: usb endpoint
* @pending_req_list: list of requests queuing on transfer ring.
* @deferred_req_list: list of requests waiting for queuing on transfer ring.
* @wa2_descmiss_req_list: list of requests internally allocated by driver.
* @trb_pool: transfer ring - array of transaction buffers
* @trb_pool_dma: dma address of transfer ring
* @cdns3_dev: device associated with this endpoint
* @name: a human readable name e.g. ep1out
* @flags: specify the current state of endpoint
* @descmis_req: internal transfer object used for getting data from on-chip
* buffer. It can happen only if function driver doesn't send usb_request
* object on time.
* @dir: endpoint direction
* @num: endpoint number (1 - 15)
* @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK
* @interval: interval between packets used for ISOC endpoint.
* @free_trbs: number of free TRBs in transfer ring
* @num_trbs: number of all TRBs in transfer ring
* @alloc_ring_size: size of the allocated TRB ring
* @pcs: producer cycle state
* @ccs: consumer cycle state
* @enqueue: enqueue index in transfer ring
* @dequeue: dequeue index in transfer ring
* @trb_burst_size: number of burst used in trb.
*/
struct cdns3_endpoint {
struct usb_ep endpoint;
struct list_head pending_req_list;
struct list_head deferred_req_list;
struct list_head wa2_descmiss_req_list;
int wa2_counter;
struct cdns3_trb *trb_pool;
dma_addr_t trb_pool_dma;
struct cdns3_device *cdns3_dev;
char name[20];
#define EP_ENABLED BIT(0)
#define EP_STALLED BIT(1)
#define EP_STALL_PENDING BIT(2)
#define EP_WEDGE BIT(3)
#define EP_TRANSFER_STARTED BIT(4)
#define EP_UPDATE_EP_TRBADDR BIT(5)
#define EP_PENDING_REQUEST BIT(6)
#define EP_RING_FULL BIT(7)
#define EP_CLAIMED BIT(8)
#define EP_DEFERRED_DRDY BIT(9)
#define EP_QUIRK_ISO_OUT_EN BIT(10)
#define EP_QUIRK_END_TRANSFER BIT(11)
#define EP_QUIRK_EXTRA_BUF_DET BIT(12)
#define EP_QUIRK_EXTRA_BUF_EN BIT(13)
#define EP_TDLCHK_EN BIT(15)
#define EP_CONFIGURED BIT(16)
u32 flags;
struct cdns3_request *descmis_req;
u8 dir;
u8 num;
u8 type;
int interval;
int free_trbs;
int num_trbs;
int alloc_ring_size;
u8 pcs;
u8 ccs;
int enqueue;
int dequeue;
u8 trb_burst_size;
unsigned int wa1_set:1;
struct cdns3_trb *wa1_trb;
unsigned int wa1_trb_index;
unsigned int wa1_cycle_bit:1;
/* Stream related */
unsigned int use_streams:1;
unsigned int prime_flag:1;
u32 ep_sts_pending;
u16 last_stream_id;
u16 pending_tdl;
unsigned int stream_sg_idx;
};
/**
* struct cdns3_aligned_buf - represent aligned buffer used for DMA transfer
* @buf: aligned to 8 bytes data buffer. Buffer address used in
* TRB shall be aligned to 8.
* @dma: dma address
* @size: size of buffer
* @in_use: inform if this buffer is associated with usb_request
* @list: used to adding instance of this object to list
*/
struct cdns3_aligned_buf {
void *buf;
dma_addr_t dma;
u32 size;
enum dma_data_direction dir;
unsigned in_use:1;
struct list_head list;
};
/**
* struct cdns3_request - extended device side representation of usb_request
* object .
* @request: generic usb_request object describing single I/O request.
* @priv_ep: extended representation of usb_ep object
* @trb: the first TRB association with this request
* @start_trb: number of the first TRB in transfer ring
* @end_trb: number of the last TRB in transfer ring
* @aligned_buf: object holds information about aligned buffer associated whit
* this endpoint
* @flags: flag specifying special usage of request
* @list: used by internally allocated request to add to wa2_descmiss_req_list.
* @finished_trb: number of trb has already finished per request
* @num_of_trb: how many trbs in this request
*/
struct cdns3_request {
struct usb_request request;
struct cdns3_endpoint *priv_ep;
struct cdns3_trb *trb;
int start_trb;
int end_trb;
struct cdns3_aligned_buf *aligned_buf;
#define REQUEST_PENDING BIT(0)
#define REQUEST_INTERNAL BIT(1)
#define REQUEST_INTERNAL_CH BIT(2)
#define REQUEST_ZLP BIT(3)
#define REQUEST_UNALIGNED BIT(4)
u32 flags;
struct list_head list;
int finished_trb;
int num_of_trb;
};
#define to_cdns3_request(r) (container_of(r, struct cdns3_request, request))
/*Stages used during enumeration process.*/
#define CDNS3_SETUP_STAGE 0x0
#define CDNS3_DATA_STAGE 0x1
#define CDNS3_STATUS_STAGE 0x2
/**
* struct cdns3_device - represent USB device.
* @dev: pointer to device structure associated whit this controller
* @sysdev: pointer to the DMA capable device
* @gadget: device side representation of the peripheral controller
* @gadget_driver: pointer to the gadget driver
* @dev_ver: device controller version.
* @lock: for synchronizing
* @regs: base address for device side registers
* @setup_buf: used while processing usb control requests
* @setup_dma: dma address for setup_buf
* @zlp_buf - zlp buffer
* @ep0_stage: ep0 stage during enumeration process.
* @ep0_data_dir: direction for control transfer
* @eps: array of pointers to all endpoints with exclusion ep0
* @aligned_buf_list: list of aligned buffers internally allocated by driver
* @aligned_buf_wq: workqueue freeing no longer used aligned buf.
* @selected_ep: actually selected endpoint. It's used only to improve
* performance.
* @isoch_delay: value from Set Isoch Delay request. Only valid on SS/SSP.
* @u1_allowed: allow device transition to u1 state
* @u2_allowed: allow device transition to u2 state
* @is_selfpowered: device is self powered
* @setup_pending: setup packet is processing by gadget driver
* @hw_configured_flag: hardware endpoint configuration was set.
* @wake_up_flag: allow device to remote up the host
* @status_completion_no_call: indicate that driver is waiting for status s
* stage completion. It's used in deferred SET_CONFIGURATION request.
* @onchip_buffers: number of available on-chip buffers.
* @onchip_used_size: actual size of on-chip memory assigned to endpoints.
* @pending_status_wq: workqueue handling status stage for deferred requests.
* @pending_status_request: request for which status stage was deferred
*/
struct cdns3_device {
struct device *dev;
struct device *sysdev;
struct usb_gadget gadget;
struct usb_gadget_driver *gadget_driver;
#define CDNS_REVISION_V0 0x00024501
#define CDNS_REVISION_V1 0x00024509
u32 dev_ver;
/* generic spin-lock for drivers */
spinlock_t lock;
struct cdns3_usb_regs __iomem *regs;
struct dma_pool *eps_dma_pool;
struct usb_ctrlrequest *setup_buf;
dma_addr_t setup_dma;
void *zlp_buf;
u8 ep0_stage;
int ep0_data_dir;
struct cdns3_endpoint *eps[CDNS3_ENDPOINTS_MAX_COUNT];
struct list_head aligned_buf_list;
struct work_struct aligned_buf_wq;
u32 selected_ep;
u16 isoch_delay;
unsigned wait_for_setup:1;
unsigned u1_allowed:1;
unsigned u2_allowed:1;
unsigned is_selfpowered:1;
unsigned setup_pending:1;
unsigned hw_configured_flag:1;
unsigned wake_up_flag:1;
unsigned status_completion_no_call:1;
unsigned using_streams:1;
int out_mem_is_allocated;
struct work_struct pending_status_wq;
struct usb_request *pending_status_request;
/*in KB */
u16 onchip_buffers;
u16 onchip_used_size;
u16 ep_buf_size;
u16 ep_iso_burst;
};
void cdns3_set_register_bit(void __iomem *ptr, u32 mask);
dma_addr_t cdns3_trb_virt_to_dma(struct cdns3_endpoint *priv_ep,
struct cdns3_trb *trb);
enum usb_device_speed cdns3_get_speed(struct cdns3_device *priv_dev);
void cdns3_pending_setup_status_handler(struct work_struct *work);
void cdns3_hw_reset_eps_config(struct cdns3_device *priv_dev);
void cdns3_set_hw_configuration(struct cdns3_device *priv_dev);
void cdns3_select_ep(struct cdns3_device *priv_dev, u32 ep);
void cdns3_allow_enable_l1(struct cdns3_device *priv_dev, int enable);
struct usb_request *cdns3_next_request(struct list_head *list);
void cdns3_rearm_transfer(struct cdns3_endpoint *priv_ep, u8 rearm);
int cdns3_allocate_trb_pool(struct cdns3_endpoint *priv_ep);
u8 cdns3_ep_addr_to_index(u8 ep_addr);
int cdns3_gadget_ep_set_wedge(struct usb_ep *ep);
int cdns3_gadget_ep_set_halt(struct usb_ep *ep, int value);
void __cdns3_gadget_ep_set_halt(struct cdns3_endpoint *priv_ep);
int __cdns3_gadget_ep_clear_halt(struct cdns3_endpoint *priv_ep);
struct usb_request *cdns3_gadget_ep_alloc_request(struct usb_ep *ep,
gfp_t gfp_flags);
void cdns3_gadget_ep_free_request(struct usb_ep *ep,
struct usb_request *request);
int cdns3_gadget_ep_dequeue(struct usb_ep *ep, struct usb_request *request);
void cdns3_gadget_giveback(struct cdns3_endpoint *priv_ep,
struct cdns3_request *priv_req,
int status);
int cdns3_init_ep0(struct cdns3_device *priv_dev,
struct cdns3_endpoint *priv_ep);
void cdns3_ep0_config(struct cdns3_device *priv_dev);
int cdns3_ep_config(struct cdns3_endpoint *priv_ep, bool enable);
void cdns3_check_ep0_interrupt_proceed(struct cdns3_device *priv_dev, int dir);
int __cdns3_gadget_wakeup(struct cdns3_device *priv_dev);
#endif /* __LINUX_CDNS3_GADGET */
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