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linux/drivers/usb/gadget/udc/amd5536udc.h
Sudip Mukherjee 76c3727da1 usb: gadget: amd5536udc: remove unnecessary conditions 
The condition checking for irq_registered, regs, mem_region and active
are not required as this is the remove function. And we are in the
remove means that probe was successful and they can never be NULL at
this point of code.
It was required in the original code as the remove function was part of
the error handler of probe function.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-10-01 12:40:20 -05:00

615 lines
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/*
* amd5536.h -- header for AMD 5536 UDC high/full speed USB device controller
*
* Copyright (C) 2007 AMD (http://www.amd.com)
* Author: Thomas Dahlmann
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef AMD5536UDC_H
#define AMD5536UDC_H
/* various constants */
#define UDC_RDE_TIMER_SECONDS 1
#define UDC_RDE_TIMER_DIV 10
#define UDC_POLLSTALL_TIMER_USECONDS 500
/* Hs AMD5536 chip rev. */
#define UDC_HSA0_REV 1
#define UDC_HSB1_REV 2
/*
* SETUP usb commands
* needed, because some SETUP's are handled in hw, but must be passed to
* gadget driver above
* SET_CONFIG
*/
#define UDC_SETCONFIG_DWORD0 0x00000900
#define UDC_SETCONFIG_DWORD0_VALUE_MASK 0xffff0000
#define UDC_SETCONFIG_DWORD0_VALUE_OFS 16
#define UDC_SETCONFIG_DWORD1 0x00000000
/* SET_INTERFACE */
#define UDC_SETINTF_DWORD0 0x00000b00
#define UDC_SETINTF_DWORD0_ALT_MASK 0xffff0000
#define UDC_SETINTF_DWORD0_ALT_OFS 16
#define UDC_SETINTF_DWORD1 0x00000000
#define UDC_SETINTF_DWORD1_INTF_MASK 0x0000ffff
#define UDC_SETINTF_DWORD1_INTF_OFS 0
/* Mass storage reset */
#define UDC_MSCRES_DWORD0 0x0000ff21
#define UDC_MSCRES_DWORD1 0x00000000
/* Global CSR's -------------------------------------------------------------*/
#define UDC_CSR_ADDR 0x500
/* EP NE bits */
/* EP number */
#define UDC_CSR_NE_NUM_MASK 0x0000000f
#define UDC_CSR_NE_NUM_OFS 0
/* EP direction */
#define UDC_CSR_NE_DIR_MASK 0x00000010
#define UDC_CSR_NE_DIR_OFS 4
/* EP type */
#define UDC_CSR_NE_TYPE_MASK 0x00000060
#define UDC_CSR_NE_TYPE_OFS 5
/* EP config number */
#define UDC_CSR_NE_CFG_MASK 0x00000780
#define UDC_CSR_NE_CFG_OFS 7
/* EP interface number */
#define UDC_CSR_NE_INTF_MASK 0x00007800
#define UDC_CSR_NE_INTF_OFS 11
/* EP alt setting */
#define UDC_CSR_NE_ALT_MASK 0x00078000
#define UDC_CSR_NE_ALT_OFS 15
/* max pkt */
#define UDC_CSR_NE_MAX_PKT_MASK 0x3ff80000
#define UDC_CSR_NE_MAX_PKT_OFS 19
/* Device Config Register ---------------------------------------------------*/
#define UDC_DEVCFG_ADDR 0x400
#define UDC_DEVCFG_SOFTRESET 31
#define UDC_DEVCFG_HNPSFEN 30
#define UDC_DEVCFG_DMARST 29
#define UDC_DEVCFG_SET_DESC 18
#define UDC_DEVCFG_CSR_PRG 17
#define UDC_DEVCFG_STATUS 7
#define UDC_DEVCFG_DIR 6
#define UDC_DEVCFG_PI 5
#define UDC_DEVCFG_SS 4
#define UDC_DEVCFG_SP 3
#define UDC_DEVCFG_RWKP 2
#define UDC_DEVCFG_SPD_MASK 0x3
#define UDC_DEVCFG_SPD_OFS 0
#define UDC_DEVCFG_SPD_HS 0x0
#define UDC_DEVCFG_SPD_FS 0x1
#define UDC_DEVCFG_SPD_LS 0x2
/*#define UDC_DEVCFG_SPD_FS 0x3*/
/* Device Control Register --------------------------------------------------*/
#define UDC_DEVCTL_ADDR 0x404
#define UDC_DEVCTL_THLEN_MASK 0xff000000
#define UDC_DEVCTL_THLEN_OFS 24
#define UDC_DEVCTL_BRLEN_MASK 0x00ff0000
#define UDC_DEVCTL_BRLEN_OFS 16
#define UDC_DEVCTL_CSR_DONE 13
#define UDC_DEVCTL_DEVNAK 12
#define UDC_DEVCTL_SD 10
#define UDC_DEVCTL_MODE 9
#define UDC_DEVCTL_BREN 8
#define UDC_DEVCTL_THE 7
#define UDC_DEVCTL_BF 6
#define UDC_DEVCTL_BE 5
#define UDC_DEVCTL_DU 4
#define UDC_DEVCTL_TDE 3
#define UDC_DEVCTL_RDE 2
#define UDC_DEVCTL_RES 0
/* Device Status Register ---------------------------------------------------*/
#define UDC_DEVSTS_ADDR 0x408
#define UDC_DEVSTS_TS_MASK 0xfffc0000
#define UDC_DEVSTS_TS_OFS 18
#define UDC_DEVSTS_SESSVLD 17
#define UDC_DEVSTS_PHY_ERROR 16
#define UDC_DEVSTS_RXFIFO_EMPTY 15
#define UDC_DEVSTS_ENUM_SPEED_MASK 0x00006000
#define UDC_DEVSTS_ENUM_SPEED_OFS 13
#define UDC_DEVSTS_ENUM_SPEED_FULL 1
#define UDC_DEVSTS_ENUM_SPEED_HIGH 0
#define UDC_DEVSTS_SUSP 12
#define UDC_DEVSTS_ALT_MASK 0x00000f00
#define UDC_DEVSTS_ALT_OFS 8
#define UDC_DEVSTS_INTF_MASK 0x000000f0
#define UDC_DEVSTS_INTF_OFS 4
#define UDC_DEVSTS_CFG_MASK 0x0000000f
#define UDC_DEVSTS_CFG_OFS 0
/* Device Interrupt Register ------------------------------------------------*/
#define UDC_DEVINT_ADDR 0x40c
#define UDC_DEVINT_SVC 7
#define UDC_DEVINT_ENUM 6
#define UDC_DEVINT_SOF 5
#define UDC_DEVINT_US 4
#define UDC_DEVINT_UR 3
#define UDC_DEVINT_ES 2
#define UDC_DEVINT_SI 1
#define UDC_DEVINT_SC 0
/* Device Interrupt Mask Register -------------------------------------------*/
#define UDC_DEVINT_MSK_ADDR 0x410
#define UDC_DEVINT_MSK 0x7f
/* Endpoint Interrupt Register ----------------------------------------------*/
#define UDC_EPINT_ADDR 0x414
#define UDC_EPINT_OUT_MASK 0xffff0000
#define UDC_EPINT_OUT_OFS 16
#define UDC_EPINT_IN_MASK 0x0000ffff
#define UDC_EPINT_IN_OFS 0
#define UDC_EPINT_IN_EP0 0
#define UDC_EPINT_IN_EP1 1
#define UDC_EPINT_IN_EP2 2
#define UDC_EPINT_IN_EP3 3
#define UDC_EPINT_OUT_EP0 16
#define UDC_EPINT_OUT_EP1 17
#define UDC_EPINT_OUT_EP2 18
#define UDC_EPINT_OUT_EP3 19
#define UDC_EPINT_EP0_ENABLE_MSK 0x001e001e
/* Endpoint Interrupt Mask Register -----------------------------------------*/
#define UDC_EPINT_MSK_ADDR 0x418
#define UDC_EPINT_OUT_MSK_MASK 0xffff0000
#define UDC_EPINT_OUT_MSK_OFS 16
#define UDC_EPINT_IN_MSK_MASK 0x0000ffff
#define UDC_EPINT_IN_MSK_OFS 0
#define UDC_EPINT_MSK_DISABLE_ALL 0xffffffff
/* mask non-EP0 endpoints */
#define UDC_EPDATAINT_MSK_DISABLE 0xfffefffe
/* mask all dev interrupts */
#define UDC_DEV_MSK_DISABLE 0x7f
/* Endpoint-specific CSR's --------------------------------------------------*/
#define UDC_EPREGS_ADDR 0x0
#define UDC_EPIN_REGS_ADDR 0x0
#define UDC_EPOUT_REGS_ADDR 0x200
#define UDC_EPCTL_ADDR 0x0
#define UDC_EPCTL_RRDY 9
#define UDC_EPCTL_CNAK 8
#define UDC_EPCTL_SNAK 7
#define UDC_EPCTL_NAK 6
#define UDC_EPCTL_ET_MASK 0x00000030
#define UDC_EPCTL_ET_OFS 4
#define UDC_EPCTL_ET_CONTROL 0
#define UDC_EPCTL_ET_ISO 1
#define UDC_EPCTL_ET_BULK 2
#define UDC_EPCTL_ET_INTERRUPT 3
#define UDC_EPCTL_P 3
#define UDC_EPCTL_SN 2
#define UDC_EPCTL_F 1
#define UDC_EPCTL_S 0
/* Endpoint Status Registers ------------------------------------------------*/
#define UDC_EPSTS_ADDR 0x4
#define UDC_EPSTS_RX_PKT_SIZE_MASK 0x007ff800
#define UDC_EPSTS_RX_PKT_SIZE_OFS 11
#define UDC_EPSTS_TDC 10
#define UDC_EPSTS_HE 9
#define UDC_EPSTS_BNA 7
#define UDC_EPSTS_IN 6
#define UDC_EPSTS_OUT_MASK 0x00000030
#define UDC_EPSTS_OUT_OFS 4
#define UDC_EPSTS_OUT_DATA 1
#define UDC_EPSTS_OUT_DATA_CLEAR 0x10
#define UDC_EPSTS_OUT_SETUP 2
#define UDC_EPSTS_OUT_SETUP_CLEAR 0x20
#define UDC_EPSTS_OUT_CLEAR 0x30
/* Endpoint Buffer Size IN/ Receive Packet Frame Number OUT Registers ------*/
#define UDC_EPIN_BUFF_SIZE_ADDR 0x8
#define UDC_EPOUT_FRAME_NUMBER_ADDR 0x8
#define UDC_EPIN_BUFF_SIZE_MASK 0x0000ffff
#define UDC_EPIN_BUFF_SIZE_OFS 0
/* EP0in txfifo = 128 bytes*/
#define UDC_EPIN0_BUFF_SIZE 32
/* EP0in fullspeed txfifo = 128 bytes*/
#define UDC_FS_EPIN0_BUFF_SIZE 32
/* fifo size mult = fifo size / max packet */
#define UDC_EPIN_BUFF_SIZE_MULT 2
/* EPin data fifo size = 1024 bytes DOUBLE BUFFERING */
#define UDC_EPIN_BUFF_SIZE 256
/* EPin small INT data fifo size = 128 bytes */
#define UDC_EPIN_SMALLINT_BUFF_SIZE 32
/* EPin fullspeed data fifo size = 128 bytes DOUBLE BUFFERING */
#define UDC_FS_EPIN_BUFF_SIZE 32
#define UDC_EPOUT_FRAME_NUMBER_MASK 0x0000ffff
#define UDC_EPOUT_FRAME_NUMBER_OFS 0
/* Endpoint Buffer Size OUT/Max Packet Size Registers -----------------------*/
#define UDC_EPOUT_BUFF_SIZE_ADDR 0x0c
#define UDC_EP_MAX_PKT_SIZE_ADDR 0x0c
#define UDC_EPOUT_BUFF_SIZE_MASK 0xffff0000
#define UDC_EPOUT_BUFF_SIZE_OFS 16
#define UDC_EP_MAX_PKT_SIZE_MASK 0x0000ffff
#define UDC_EP_MAX_PKT_SIZE_OFS 0
/* EP0in max packet size = 64 bytes */
#define UDC_EP0IN_MAX_PKT_SIZE 64
/* EP0out max packet size = 64 bytes */
#define UDC_EP0OUT_MAX_PKT_SIZE 64
/* EP0in fullspeed max packet size = 64 bytes */
#define UDC_FS_EP0IN_MAX_PKT_SIZE 64
/* EP0out fullspeed max packet size = 64 bytes */
#define UDC_FS_EP0OUT_MAX_PKT_SIZE 64
/*
* Endpoint dma descriptors ------------------------------------------------
*
* Setup data, Status dword
*/
#define UDC_DMA_STP_STS_CFG_MASK 0x0fff0000
#define UDC_DMA_STP_STS_CFG_OFS 16
#define UDC_DMA_STP_STS_CFG_ALT_MASK 0x000f0000
#define UDC_DMA_STP_STS_CFG_ALT_OFS 16
#define UDC_DMA_STP_STS_CFG_INTF_MASK 0x00f00000
#define UDC_DMA_STP_STS_CFG_INTF_OFS 20
#define UDC_DMA_STP_STS_CFG_NUM_MASK 0x0f000000
#define UDC_DMA_STP_STS_CFG_NUM_OFS 24
#define UDC_DMA_STP_STS_RX_MASK 0x30000000
#define UDC_DMA_STP_STS_RX_OFS 28
#define UDC_DMA_STP_STS_BS_MASK 0xc0000000
#define UDC_DMA_STP_STS_BS_OFS 30
#define UDC_DMA_STP_STS_BS_HOST_READY 0
#define UDC_DMA_STP_STS_BS_DMA_BUSY 1
#define UDC_DMA_STP_STS_BS_DMA_DONE 2
#define UDC_DMA_STP_STS_BS_HOST_BUSY 3
/* IN data, Status dword */
#define UDC_DMA_IN_STS_TXBYTES_MASK 0x0000ffff
#define UDC_DMA_IN_STS_TXBYTES_OFS 0
#define UDC_DMA_IN_STS_FRAMENUM_MASK 0x07ff0000
#define UDC_DMA_IN_STS_FRAMENUM_OFS 0
#define UDC_DMA_IN_STS_L 27
#define UDC_DMA_IN_STS_TX_MASK 0x30000000
#define UDC_DMA_IN_STS_TX_OFS 28
#define UDC_DMA_IN_STS_BS_MASK 0xc0000000
#define UDC_DMA_IN_STS_BS_OFS 30
#define UDC_DMA_IN_STS_BS_HOST_READY 0
#define UDC_DMA_IN_STS_BS_DMA_BUSY 1
#define UDC_DMA_IN_STS_BS_DMA_DONE 2
#define UDC_DMA_IN_STS_BS_HOST_BUSY 3
/* OUT data, Status dword */
#define UDC_DMA_OUT_STS_RXBYTES_MASK 0x0000ffff
#define UDC_DMA_OUT_STS_RXBYTES_OFS 0
#define UDC_DMA_OUT_STS_FRAMENUM_MASK 0x07ff0000
#define UDC_DMA_OUT_STS_FRAMENUM_OFS 0
#define UDC_DMA_OUT_STS_L 27
#define UDC_DMA_OUT_STS_RX_MASK 0x30000000
#define UDC_DMA_OUT_STS_RX_OFS 28
#define UDC_DMA_OUT_STS_BS_MASK 0xc0000000
#define UDC_DMA_OUT_STS_BS_OFS 30
#define UDC_DMA_OUT_STS_BS_HOST_READY 0
#define UDC_DMA_OUT_STS_BS_DMA_BUSY 1
#define UDC_DMA_OUT_STS_BS_DMA_DONE 2
#define UDC_DMA_OUT_STS_BS_HOST_BUSY 3
/* max ep0in packet */
#define UDC_EP0IN_MAXPACKET 1000
/* max dma packet */
#define UDC_DMA_MAXPACKET 65536
/* un-usable DMA address */
#define DMA_DONT_USE (~(dma_addr_t) 0 )
/* other Endpoint register addresses and values-----------------------------*/
#define UDC_EP_SUBPTR_ADDR 0x10
#define UDC_EP_DESPTR_ADDR 0x14
#define UDC_EP_WRITE_CONFIRM_ADDR 0x1c
/* EP number as layouted in AHB space */
#define UDC_EP_NUM 32
#define UDC_EPIN_NUM 16
#define UDC_EPIN_NUM_USED 5
#define UDC_EPOUT_NUM 16
/* EP number of EP's really used = EP0 + 8 data EP's */
#define UDC_USED_EP_NUM 9
/* UDC CSR regs are aligned but AHB regs not - offset for OUT EP's */
#define UDC_CSR_EP_OUT_IX_OFS 12
#define UDC_EP0OUT_IX 16
#define UDC_EP0IN_IX 0
/* Rx fifo address and size = 1k -------------------------------------------*/
#define UDC_RXFIFO_ADDR 0x800
#define UDC_RXFIFO_SIZE 0x400
/* Tx fifo address and size = 1.5k -----------------------------------------*/
#define UDC_TXFIFO_ADDR 0xc00
#define UDC_TXFIFO_SIZE 0x600
/* default data endpoints --------------------------------------------------*/
#define UDC_EPIN_STATUS_IX 1
#define UDC_EPIN_IX 2
#define UDC_EPOUT_IX 18
/* general constants -------------------------------------------------------*/
#define UDC_DWORD_BYTES 4
#define UDC_BITS_PER_BYTE_SHIFT 3
#define UDC_BYTE_MASK 0xff
#define UDC_BITS_PER_BYTE 8
/*---------------------------------------------------------------------------*/
/* UDC CSR's */
struct udc_csrs {
/* sca - setup command address */
u32 sca;
/* ep ne's */
u32 ne[UDC_USED_EP_NUM];
} __attribute__ ((packed));
/* AHB subsystem CSR registers */
struct udc_regs {
/* device configuration */
u32 cfg;
/* device control */
u32 ctl;
/* device status */
u32 sts;
/* device interrupt */
u32 irqsts;
/* device interrupt mask */
u32 irqmsk;
/* endpoint interrupt */
u32 ep_irqsts;
/* endpoint interrupt mask */
u32 ep_irqmsk;
} __attribute__ ((packed));
/* endpoint specific registers */
struct udc_ep_regs {
/* endpoint control */
u32 ctl;
/* endpoint status */
u32 sts;
/* endpoint buffer size in/ receive packet frame number out */
u32 bufin_framenum;
/* endpoint buffer size out/max packet size */
u32 bufout_maxpkt;
/* endpoint setup buffer pointer */
u32 subptr;
/* endpoint data descriptor pointer */
u32 desptr;
/* reserverd */
u32 reserved;
/* write/read confirmation */
u32 confirm;
} __attribute__ ((packed));
/* control data DMA desc */
struct udc_stp_dma {
/* status quadlet */
u32 status;
/* reserved */
u32 _reserved;
/* first setup word */
u32 data12;
/* second setup word */
u32 data34;
} __attribute__ ((aligned (16)));
/* normal data DMA desc */
struct udc_data_dma {
/* status quadlet */
u32 status;
/* reserved */
u32 _reserved;
/* buffer pointer */
u32 bufptr;
/* next descriptor pointer */
u32 next;
} __attribute__ ((aligned (16)));
/* request packet */
struct udc_request {
/* embedded gadget ep */
struct usb_request req;
/* flags */
unsigned dma_going : 1,
dma_done : 1;
/* phys. address */
dma_addr_t td_phys;
/* first dma desc. of chain */
struct udc_data_dma *td_data;
/* last dma desc. of chain */
struct udc_data_dma *td_data_last;
struct list_head queue;
/* chain length */
unsigned chain_len;
};
/* UDC specific endpoint parameters */
struct udc_ep {
struct usb_ep ep;
struct udc_ep_regs __iomem *regs;
u32 __iomem *txfifo;
u32 __iomem *dma;
dma_addr_t td_phys;
dma_addr_t td_stp_dma;
struct udc_stp_dma *td_stp;
struct udc_data_dma *td;
/* temp request */
struct udc_request *req;
unsigned req_used;
unsigned req_completed;
/* dummy DMA desc for BNA dummy */
struct udc_request *bna_dummy_req;
unsigned bna_occurred;
/* NAK state */
unsigned naking;
struct udc *dev;
/* queue for requests */
struct list_head queue;
unsigned halted;
unsigned cancel_transfer;
unsigned num : 5,
fifo_depth : 14,
in : 1;
};
/* device struct */
struct udc {
struct usb_gadget gadget;
spinlock_t lock; /* protects all state */
/* all endpoints */
struct udc_ep ep[UDC_EP_NUM];
struct usb_gadget_driver *driver;
/* operational flags */
unsigned stall_ep0in : 1,
waiting_zlp_ack_ep0in : 1,
set_cfg_not_acked : 1,
data_ep_enabled : 1,
data_ep_queued : 1,
sys_suspended : 1,
connected;
u16 chiprev;
/* registers */
struct pci_dev *pdev;
struct udc_csrs __iomem *csr;
struct udc_regs __iomem *regs;
struct udc_ep_regs __iomem *ep_regs;
u32 __iomem *rxfifo;
u32 __iomem *txfifo;
/* DMA desc pools */
struct pci_pool *data_requests;
struct pci_pool *stp_requests;
/* device data */
unsigned long phys_addr;
void __iomem *virt_addr;
unsigned irq;
/* states */
u16 cur_config;
u16 cur_intf;
u16 cur_alt;
};
#define to_amd5536_udc(g) (container_of((g), struct udc, gadget))
/* setup request data */
union udc_setup_data {
u32 data[2];
struct usb_ctrlrequest request;
};
/*
*---------------------------------------------------------------------------
* SET and GET bitfields in u32 values
* via constants for mask/offset:
* <bit_field_stub_name> is the text between
* UDC_ and _MASK|_OFS of appropriate
* constant
*
* set bitfield value in u32 u32Val
*/
#define AMD_ADDBITS(u32Val, bitfield_val, bitfield_stub_name) \
(((u32Val) & (((u32) ~((u32) bitfield_stub_name##_MASK)))) \
| (((bitfield_val) << ((u32) bitfield_stub_name##_OFS)) \
& ((u32) bitfield_stub_name##_MASK)))
/*
* set bitfield value in zero-initialized u32 u32Val
* => bitfield bits in u32Val are all zero
*/
#define AMD_INIT_SETBITS(u32Val, bitfield_val, bitfield_stub_name) \
((u32Val) \
| (((bitfield_val) << ((u32) bitfield_stub_name##_OFS)) \
& ((u32) bitfield_stub_name##_MASK)))
/* get bitfield value from u32 u32Val */
#define AMD_GETBITS(u32Val, bitfield_stub_name) \
((u32Val & ((u32) bitfield_stub_name##_MASK)) \
>> ((u32) bitfield_stub_name##_OFS))
/* SET and GET bits in u32 values ------------------------------------------*/
#define AMD_BIT(bit_stub_name) (1 << bit_stub_name)
#define AMD_UNMASK_BIT(bit_stub_name) (~AMD_BIT(bit_stub_name))
#define AMD_CLEAR_BIT(bit_stub_name) (~AMD_BIT(bit_stub_name))
/* debug macros ------------------------------------------------------------*/
#define DBG(udc , args...) dev_dbg(&(udc)->pdev->dev, args)
#ifdef UDC_VERBOSE
#define VDBG DBG
#else
#define VDBG(udc , args...) do {} while (0)
#endif
#endif /* #ifdef AMD5536UDC_H */
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