Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 249 insertions, 0 deletions

diff --git a/drivers/usb/host/sl811.h b/drivers/usb/host/sl811.h
new file mode 100644
index 0000000000..ba8c9aa7de
--- /dev/null
+++ b/drivers/usb/host/sl811.h
@@ -0,0 +1,249 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * SL811HS register declarations and HCD data structures
+ *
+ * Copyright (C) 2004 Psion Teklogix
+ * Copyright (C) 2004 David Brownell
+ * Copyright (C) 2001 Cypress Semiconductor Inc. 
+ */
+
+/*
+ * SL811HS has transfer registers, and control registers.  In host/master
+ * mode one set of registers is used; in peripheral/slave mode, another.
+ *  - SL11H only has some "A" transfer registers from 0x00-0x04
+ *  - SL811HS also has "B" registers from 0x08-0x0c
+ *  - SL811S (or HS in slave mode) has four A+B sets, at 00, 10, 20, 30
+ */
+
+#define SL811_EP_A(base)	((base) + 0)
+#define SL811_EP_B(base)	((base) + 8)
+
+#define SL811_HOST_BUF		0x00
+#define SL811_PERIPH_EP0	0x00
+#define SL811_PERIPH_EP1	0x10
+#define SL811_PERIPH_EP2	0x20
+#define SL811_PERIPH_EP3	0x30
+
+
+/* TRANSFER REGISTERS:  host and peripheral sides are similar
+ * except for the control models (master vs slave).
+ */
+#define SL11H_HOSTCTLREG	0
+#	define SL11H_HCTLMASK_ARM	0x01
+#	define SL11H_HCTLMASK_ENABLE	0x02
+#	define SL11H_HCTLMASK_IN	0x00
+#	define SL11H_HCTLMASK_OUT	0x04
+#	define SL11H_HCTLMASK_ISOCH	0x10
+#	define SL11H_HCTLMASK_AFTERSOF	0x20
+#	define SL11H_HCTLMASK_TOGGLE	0x40
+#	define SL11H_HCTLMASK_PREAMBLE	0x80
+#define SL11H_BUFADDRREG	1
+#define SL11H_BUFLNTHREG	2
+#define SL11H_PKTSTATREG	3	/* read */
+#	define SL11H_STATMASK_ACK	0x01
+#	define SL11H_STATMASK_ERROR	0x02
+#	define SL11H_STATMASK_TMOUT	0x04
+#	define SL11H_STATMASK_SEQ	0x08
+#	define SL11H_STATMASK_SETUP	0x10
+#	define SL11H_STATMASK_OVF	0x20
+#	define SL11H_STATMASK_NAK	0x40
+#	define SL11H_STATMASK_STALL	0x80
+#define SL11H_PIDEPREG		3	/* write */
+#	define	SL_SETUP	0xd0
+#	define	SL_IN		0x90
+#	define	SL_OUT		0x10
+#	define	SL_SOF		0x50
+#	define	SL_PREAMBLE	0xc0
+#	define	SL_NAK		0xa0
+#	define	SL_STALL	0xe0
+#	define	SL_DATA0	0x30
+#	define	SL_DATA1	0xb0
+#define SL11H_XFERCNTREG	4	/* read */
+#define SL11H_DEVADDRREG	4	/* write */
+
+
+/* CONTROL REGISTERS:  host and peripheral are very different.
+ */
+#define SL11H_CTLREG1		5
+#	define SL11H_CTL1MASK_SOF_ENA	0x01
+#	define SL11H_CTL1MASK_FORCE	0x18
+#		define SL11H_CTL1MASK_NORMAL	0x00
+#		define SL11H_CTL1MASK_SE0	0x08	/* reset */
+#		define SL11H_CTL1MASK_J		0x10
+#		define SL11H_CTL1MASK_K		0x18	/* resume */
+#	define SL11H_CTL1MASK_LSPD	0x20
+#	define SL11H_CTL1MASK_SUSPEND	0x40
+#define SL11H_IRQ_ENABLE	6
+#	define SL11H_INTMASK_DONE_A	0x01
+#	define SL11H_INTMASK_DONE_B	0x02
+#	define SL11H_INTMASK_SOFINTR	0x10
+#	define SL11H_INTMASK_INSRMV	0x20	/* to/from SE0 */
+#	define SL11H_INTMASK_RD		0x40
+#	define SL11H_INTMASK_DP		0x80	/* only in INTSTATREG */
+#define SL11S_ADDRESS		7
+
+/* 0x08-0x0c are for the B buffer (not in SL11) */
+
+#define SL11H_IRQ_STATUS	0x0D	/* write to ack */
+#define SL11H_HWREVREG		0x0E	/* read */
+#	define SL11H_HWRMASK_HWREV	0xF0
+#define SL11H_SOFLOWREG		0x0E	/* write */
+#define SL11H_SOFTMRREG		0x0F	/* read */
+
+/* a write to this register enables SL811HS features.
+ * HOST flag presumably overrides the chip input signal?
+ */
+#define SL811HS_CTLREG2		0x0F
+#	define SL811HS_CTL2MASK_SOF_MASK	0x3F
+#	define SL811HS_CTL2MASK_DSWAP		0x40
+#	define SL811HS_CTL2MASK_HOST		0x80
+
+#define SL811HS_CTL2_INIT	(SL811HS_CTL2MASK_HOST | 0x2e)
+
+
+/* DATA BUFFERS: registers from 0x10..0xff are for data buffers;
+ * that's 240 bytes, which we'll split evenly between A and B sides.
+ * Only ISO can use more than 64 bytes per packet.
+ * (The SL11S has 0x40..0xff for buffers.)
+ */
+#define H_MAXPACKET	120		/* bytes in A or B fifos */
+
+#define SL11H_DATA_START	0x10
+#define	SL811HS_PACKET_BUF(is_a)	((is_a) \
+		? SL11H_DATA_START \
+		: (SL11H_DATA_START + H_MAXPACKET))
+
+/*-------------------------------------------------------------------------*/
+
+#define	LOG2_PERIODIC_SIZE	5	/* arbitrary; this matches OHCI */
+#define	PERIODIC_SIZE		(1 << LOG2_PERIODIC_SIZE)
+
+struct sl811 {
+	spinlock_t		lock;
+	void __iomem		*addr_reg;
+	void __iomem		*data_reg;
+	struct sl811_platform_data	*board;
+
+	unsigned long		stat_insrmv;
+	unsigned long		stat_wake;
+	unsigned long		stat_sof;
+	unsigned long		stat_a;
+	unsigned long		stat_b;
+	unsigned long		stat_lost;
+	unsigned long		stat_overrun;
+
+	/* sw model */
+	struct timer_list	timer;
+	struct sl811h_ep	*next_periodic;
+	struct sl811h_ep	*next_async;
+
+	struct sl811h_ep	*active_a;
+	unsigned long		jiffies_a;
+	struct sl811h_ep	*active_b;
+	unsigned long		jiffies_b;
+
+	u32			port1;
+	u8			ctrl1, ctrl2, irq_enable;
+	u16			frame;
+
+	/* async schedule: control, bulk */
+	struct list_head	async;
+
+	/* periodic schedule: interrupt, iso */
+	u16			load[PERIODIC_SIZE];
+	struct sl811h_ep	*periodic[PERIODIC_SIZE];
+	unsigned		periodic_count;
+};
+
+static inline struct sl811 *hcd_to_sl811(struct usb_hcd *hcd)
+{
+	return (struct sl811 *) (hcd->hcd_priv);
+}
+
+static inline struct usb_hcd *sl811_to_hcd(struct sl811 *sl811)
+{
+	return container_of((void *) sl811, struct usb_hcd, hcd_priv);
+}
+
+struct sl811h_ep {
+	struct usb_host_endpoint *hep;
+	struct usb_device	*udev;
+
+	u8			defctrl;
+	u8			maxpacket;
+	u8			epnum;
+	u8			nextpid;
+
+	u16			error_count;
+	u16			nak_count;
+	u16			length;		/* of current packet */
+
+	/* periodic schedule */
+	u16			period;
+	u16			branch;
+	u16			load;
+	struct sl811h_ep	*next;
+
+	/* async schedule */
+	struct list_head	schedule;
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* These register utilities should work for the SL811S register API too
+ * NOTE:  caller must hold sl811->lock.
+ */
+
+static inline u8 sl811_read(struct sl811 *sl811, int reg)
+{
+	writeb(reg, sl811->addr_reg);
+	return readb(sl811->data_reg);
+}
+
+static inline void sl811_write(struct sl811 *sl811, int reg, u8 val)
+{
+	writeb(reg, sl811->addr_reg);
+	writeb(val, sl811->data_reg);
+}
+
+static inline void
+sl811_write_buf(struct sl811 *sl811, int addr, const void *buf, size_t count)
+{
+	const u8	*data;
+	void __iomem	*data_reg;
+
+	if (!count)
+		return;
+	writeb(addr, sl811->addr_reg);
+
+	data = buf;
+	data_reg = sl811->data_reg;
+	do {
+		writeb(*data++, data_reg);
+	} while (--count);
+}
+
+static inline void
+sl811_read_buf(struct sl811 *sl811, int addr, void *buf, size_t count)
+{
+	u8 		*data;
+	void __iomem	*data_reg;
+
+	if (!count)
+		return;
+	writeb(addr, sl811->addr_reg);
+
+	data = buf;
+	data_reg = sl811->data_reg;
+	do {
+		*data++ = readb(data_reg);
+	} while (--count);
+}
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef PACKET_TRACE
+#    define PACKET		pr_debug("sl811: "stuff)
+#else
+#    define PACKET(stuff...)	do{}while(0)
+#endif