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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/usb/gadget/udc/goku_udc.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/usb/gadget/udc/goku_udc.h')
-rw-r--r--drivers/usb/gadget/udc/goku_udc.h289
1 files changed, 289 insertions, 0 deletions
diff --git a/drivers/usb/gadget/udc/goku_udc.h b/drivers/usb/gadget/udc/goku_udc.h
new file mode 100644
index 000000000..70023d401
--- /dev/null
+++ b/drivers/usb/gadget/udc/goku_udc.h
@@ -0,0 +1,289 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Toshiba TC86C001 ("Goku-S") USB Device Controller driver
+ *
+ * Copyright (C) 2000-2002 Lineo
+ * by Stuart Lynne, Tom Rushworth, and Bruce Balden
+ * Copyright (C) 2002 Toshiba Corporation
+ * Copyright (C) 2003 MontaVista Software (source@mvista.com)
+ */
+
+/*
+ * PCI BAR 0 points to these registers.
+ */
+struct goku_udc_regs {
+ /* irq management */
+ u32 int_status; /* 0x000 */
+ u32 int_enable;
+#define INT_SUSPEND 0x00001 /* or resume */
+#define INT_USBRESET 0x00002
+#define INT_ENDPOINT0 0x00004
+#define INT_SETUP 0x00008
+#define INT_STATUS 0x00010
+#define INT_STATUSNAK 0x00020
+#define INT_EPxDATASET(n) (0x00020 << (n)) /* 0 < n < 4 */
+# define INT_EP1DATASET 0x00040
+# define INT_EP2DATASET 0x00080
+# define INT_EP3DATASET 0x00100
+#define INT_EPnNAK(n) (0x00100 << (n)) /* 0 < n < 4 */
+# define INT_EP1NAK 0x00200
+# define INT_EP2NAK 0x00400
+# define INT_EP3NAK 0x00800
+#define INT_SOF 0x01000
+#define INT_ERR 0x02000
+#define INT_MSTWRSET 0x04000
+#define INT_MSTWREND 0x08000
+#define INT_MSTWRTMOUT 0x10000
+#define INT_MSTRDEND 0x20000
+#define INT_SYSERROR 0x40000
+#define INT_PWRDETECT 0x80000
+
+#define INT_DEVWIDE \
+ (INT_PWRDETECT|INT_SYSERROR/*|INT_ERR*/|INT_USBRESET|INT_SUSPEND)
+#define INT_EP0 \
+ (INT_SETUP|INT_ENDPOINT0/*|INT_STATUS*/|INT_STATUSNAK)
+
+ u32 dma_master;
+#define MST_EOPB_DIS 0x0800
+#define MST_EOPB_ENA 0x0400
+#define MST_TIMEOUT_DIS 0x0200
+#define MST_TIMEOUT_ENA 0x0100
+#define MST_RD_EOPB 0x0080 /* write-only */
+#define MST_RD_RESET 0x0040
+#define MST_WR_RESET 0x0020
+#define MST_RD_ENA 0x0004 /* 1:start, 0:ignore */
+#define MST_WR_ENA 0x0002 /* 1:start, 0:ignore */
+#define MST_CONNECTION 0x0001 /* 0 for ep1out/ep2in */
+
+#define MST_R_BITS (MST_EOPB_DIS|MST_EOPB_ENA \
+ |MST_RD_ENA|MST_RD_RESET)
+#define MST_W_BITS (MST_TIMEOUT_DIS|MST_TIMEOUT_ENA \
+ |MST_WR_ENA|MST_WR_RESET)
+#define MST_RW_BITS (MST_R_BITS|MST_W_BITS \
+ |MST_CONNECTION)
+
+/* these values assume (dma_master & MST_CONNECTION) == 0 */
+#define UDC_MSTWR_ENDPOINT 1
+#define UDC_MSTRD_ENDPOINT 2
+
+ /* dma master write */
+ u32 out_dma_start;
+ u32 out_dma_end;
+ u32 out_dma_current;
+
+ /* dma master read */
+ u32 in_dma_start;
+ u32 in_dma_end;
+ u32 in_dma_current;
+
+ u32 power_detect;
+#define PW_DETECT 0x04
+#define PW_RESETB 0x02
+#define PW_PULLUP 0x01
+
+ u8 _reserved0 [0x1d8];
+
+ /* endpoint registers */
+ u32 ep_fifo [4]; /* 0x200 */
+ u8 _reserved1 [0x10];
+ u32 ep_mode [4]; /* only 1-3 valid */
+ u8 _reserved2 [0x10];
+
+ u32 ep_status [4];
+#define EPxSTATUS_TOGGLE 0x40
+#define EPxSTATUS_SUSPEND 0x20
+#define EPxSTATUS_EP_MASK (0x07<<2)
+# define EPxSTATUS_EP_READY (0<<2)
+# define EPxSTATUS_EP_DATAIN (1<<2)
+# define EPxSTATUS_EP_FULL (2<<2)
+# define EPxSTATUS_EP_TX_ERR (3<<2)
+# define EPxSTATUS_EP_RX_ERR (4<<2)
+# define EPxSTATUS_EP_BUSY (5<<2)
+# define EPxSTATUS_EP_STALL (6<<2)
+# define EPxSTATUS_EP_INVALID (7<<2)
+#define EPxSTATUS_FIFO_DISABLE 0x02
+#define EPxSTATUS_STAGE_ERROR 0x01
+
+ u8 _reserved3 [0x10];
+ u32 EPxSizeLA[4];
+#define PACKET_ACTIVE (1<<7)
+#define DATASIZE 0x7f
+ u8 _reserved3a [0x10];
+ u32 EPxSizeLB[4]; /* only 1,2 valid */
+ u8 _reserved3b [0x10];
+ u32 EPxSizeHA[4]; /* only 1-3 valid */
+ u8 _reserved3c [0x10];
+ u32 EPxSizeHB[4]; /* only 1,2 valid */
+ u8 _reserved4[0x30];
+
+ /* SETUP packet contents */
+ u32 bRequestType; /* 0x300 */
+ u32 bRequest;
+ u32 wValueL;
+ u32 wValueH;
+ u32 wIndexL;
+ u32 wIndexH;
+ u32 wLengthL;
+ u32 wLengthH;
+
+ /* command interaction/handshaking */
+ u32 SetupRecv; /* 0x320 */
+ u32 CurrConfig;
+ u32 StdRequest;
+ u32 Request;
+ u32 DataSet;
+#define DATASET_A(epnum) (1<<(2*(epnum)))
+#define DATASET_B(epnum) (2<<(2*(epnum)))
+#define DATASET_AB(epnum) (3<<(2*(epnum)))
+ u8 _reserved5[4];
+
+ u32 UsbState;
+#define USBSTATE_CONFIGURED 0x04
+#define USBSTATE_ADDRESSED 0x02
+#define USBSTATE_DEFAULT 0x01
+
+ u32 EOP;
+
+ u32 Command; /* 0x340 */
+#define COMMAND_SETDATA0 2
+#define COMMAND_RESET 3
+#define COMMAND_STALL 4
+#define COMMAND_INVALID 5
+#define COMMAND_FIFO_DISABLE 7
+#define COMMAND_FIFO_ENABLE 8
+#define COMMAND_INIT_DESCRIPTOR 9
+#define COMMAND_FIFO_CLEAR 10 /* also stall */
+#define COMMAND_STALL_CLEAR 11
+#define COMMAND_EP(n) ((n) << 4)
+
+ u32 EPxSingle;
+ u8 _reserved6[4];
+ u32 EPxBCS;
+ u8 _reserved7[8];
+ u32 IntControl;
+#define ICONTROL_STATUSNAK 1
+ u8 _reserved8[4];
+
+ u32 reqmode; // 0x360 standard request mode, low 8 bits
+#define G_REQMODE_SET_INTF (1<<7)
+#define G_REQMODE_GET_INTF (1<<6)
+#define G_REQMODE_SET_CONF (1<<5)
+#define G_REQMODE_GET_CONF (1<<4)
+#define G_REQMODE_GET_DESC (1<<3)
+#define G_REQMODE_SET_FEAT (1<<2)
+#define G_REQMODE_CLEAR_FEAT (1<<1)
+#define G_REQMODE_GET_STATUS (1<<0)
+
+ u32 ReqMode;
+ u8 _reserved9[0x18];
+ u32 PortStatus; /* 0x380 */
+ u8 _reserved10[8];
+ u32 address;
+ u32 buff_test;
+ u8 _reserved11[4];
+ u32 UsbReady;
+ u8 _reserved12[4];
+ u32 SetDescStall; /* 0x3a0 */
+ u8 _reserved13[0x45c];
+
+ /* hardware could handle limited GET_DESCRIPTOR duties */
+#define DESC_LEN 0x80
+ u32 descriptors[DESC_LEN]; /* 0x800 */
+ u8 _reserved14[0x600];
+
+} __attribute__ ((packed));
+
+#define MAX_FIFO_SIZE 64
+#define MAX_EP0_SIZE 8 /* ep0 fifo is bigger, though */
+
+
+/*-------------------------------------------------------------------------*/
+
+/* DRIVER DATA STRUCTURES and UTILITIES */
+
+struct goku_ep {
+ struct usb_ep ep;
+ struct goku_udc *dev;
+ unsigned long irqs;
+
+ unsigned num:8,
+ dma:1,
+ is_in:1,
+ stopped:1;
+
+ /* analogous to a host-side qh */
+ struct list_head queue;
+
+ u32 __iomem *reg_fifo;
+ u32 __iomem *reg_mode;
+ u32 __iomem *reg_status;
+};
+
+struct goku_request {
+ struct usb_request req;
+ struct list_head queue;
+
+ unsigned mapped:1;
+};
+
+enum ep0state {
+ EP0_DISCONNECT, /* no host */
+ EP0_IDLE, /* between STATUS ack and SETUP report */
+ EP0_IN, EP0_OUT, /* data stage */
+ EP0_STATUS, /* status stage */
+ EP0_STALL, /* data or status stages */
+ EP0_SUSPEND, /* usb suspend */
+};
+
+struct goku_udc {
+ /* each pci device provides one gadget, several endpoints */
+ struct usb_gadget gadget;
+ spinlock_t lock;
+ struct goku_ep ep[4];
+ struct usb_gadget_driver *driver;
+
+ enum ep0state ep0state;
+ unsigned got_irq:1,
+ got_region:1,
+ req_config:1,
+ configured:1,
+ enabled:1;
+
+ /* pci state used to access those endpoints */
+ struct pci_dev *pdev;
+ struct goku_udc_regs __iomem *regs;
+ u32 int_enable;
+
+ /* statistics... */
+ unsigned long irqs;
+};
+#define to_goku_udc(g) (container_of((g), struct goku_udc, gadget))
+
+/*-------------------------------------------------------------------------*/
+
+#define xprintk(dev,level,fmt,args...) \
+ printk(level "%s %s: " fmt , driver_name , \
+ pci_name(dev->pdev) , ## args)
+
+#ifdef DEBUG
+#define DBG(dev,fmt,args...) \
+ xprintk(dev , KERN_DEBUG , fmt , ## args)
+#else
+#define DBG(dev,fmt,args...) \
+ do { } while (0)
+#endif /* DEBUG */
+
+#ifdef VERBOSE
+#define VDBG DBG
+#else
+#define VDBG(dev,fmt,args...) \
+ do { } while (0)
+#endif /* VERBOSE */
+
+#define ERROR(dev,fmt,args...) \
+ xprintk(dev , KERN_ERR , fmt , ## args)
+#define WARNING(dev,fmt,args...) \
+ xprintk(dev , KERN_WARNING , fmt , ## args)
+#define INFO(dev,fmt,args...) \
+ xprintk(dev , KERN_INFO , fmt , ## args)
+