diff options
Diffstat (limited to 'drivers/usb/cdns3/gadget.h')
| -rw-r--r-- | drivers/usb/cdns3/gadget.h | 1338 |
1 files changed, 1338 insertions, 0 deletions
diff --git a/drivers/usb/cdns3/gadget.h b/drivers/usb/cdns3/gadget.h new file mode 100644 index 000000000000..bc4024041ef2 --- /dev/null +++ b/drivers/usb/cdns3/gadget.h @@ -0,0 +1,1338 @@ +/* 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 <[email protected]> + * Pawel Jez <[email protected]> + * Peter Chen <[email protected]> + */ +#ifndef __LINUX_CDNS3_GADGET +#define __LINUX_CDNS3_GADGET +#include <linux/usb/gadget.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) +/* ISO max burst. */ +#define EP_CFG_MULT_MASK GENMASK(15, 14) +#define EP_CFG_MULT(p) (((p) << 14) & EP_CFG_MULT_MASK) +/* 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) + +/* 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) + +/* 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 40 + +#define ISO_MAX_INTERVAL 10 + +#if TRBS_PER_SEGMENT < 2 +#error "Incorrect TRBS_PER_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_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) + +/* + * 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) (((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_EP_BUF_SIZE 2 /* KB */ +#define CDNS3_EP_ISO_HS_MULT 3 +#define CDNS3_EP_ISO_SS_BURST 3 +#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 + * @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) + u32 flags; + + struct cdns3_request *descmis_req; + + u8 dir; + u8 num; + u8 type; + int interval; + + int free_trbs; + int num_trbs; + 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; +}; + +/** + * 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; + int 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. + */ +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; +}; + +#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 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; + int hw_configured_flag:1; + int wake_up_flag:1; + unsigned status_completion_no_call: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; +}; + +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); +int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep, + struct usb_request *request); +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); +void cdns3_ep_config(struct cdns3_endpoint *priv_ep); +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 */ |