449 lines
14 KiB
C
449 lines
14 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Host interface registers
|
|
*/
|
|
|
|
#define OXU_DEVICEID 0x00
|
|
#define OXU_REV_MASK 0xffff0000
|
|
#define OXU_REV_SHIFT 16
|
|
#define OXU_REV_2100 0x2100
|
|
#define OXU_BO_SHIFT 8
|
|
#define OXU_BO_MASK (0x3 << OXU_BO_SHIFT)
|
|
#define OXU_MAJ_REV_SHIFT 4
|
|
#define OXU_MAJ_REV_MASK (0xf << OXU_MAJ_REV_SHIFT)
|
|
#define OXU_MIN_REV_SHIFT 0
|
|
#define OXU_MIN_REV_MASK (0xf << OXU_MIN_REV_SHIFT)
|
|
#define OXU_HOSTIFCONFIG 0x04
|
|
#define OXU_SOFTRESET 0x08
|
|
#define OXU_SRESET (1 << 0)
|
|
|
|
#define OXU_PIOBURSTREADCTRL 0x0C
|
|
|
|
#define OXU_CHIPIRQSTATUS 0x10
|
|
#define OXU_CHIPIRQEN_SET 0x14
|
|
#define OXU_CHIPIRQEN_CLR 0x18
|
|
#define OXU_USBSPHLPWUI 0x00000080
|
|
#define OXU_USBOTGLPWUI 0x00000040
|
|
#define OXU_USBSPHI 0x00000002
|
|
#define OXU_USBOTGI 0x00000001
|
|
|
|
#define OXU_CLKCTRL_SET 0x1C
|
|
#define OXU_SYSCLKEN 0x00000008
|
|
#define OXU_USBSPHCLKEN 0x00000002
|
|
#define OXU_USBOTGCLKEN 0x00000001
|
|
|
|
#define OXU_ASO 0x68
|
|
#define OXU_SPHPOEN 0x00000100
|
|
#define OXU_OVRCCURPUPDEN 0x00000800
|
|
#define OXU_ASO_OP (1 << 10)
|
|
#define OXU_COMPARATOR 0x000004000
|
|
|
|
#define OXU_USBMODE 0x1A8
|
|
#define OXU_VBPS 0x00000020
|
|
#define OXU_ES_LITTLE 0x00000000
|
|
#define OXU_CM_HOST_ONLY 0x00000003
|
|
|
|
/*
|
|
* Proper EHCI structs & defines
|
|
*/
|
|
|
|
/* Magic numbers that can affect system performance */
|
|
#define EHCI_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */
|
|
#define EHCI_TUNE_RL_HS 4 /* nak throttle; see 4.9 */
|
|
#define EHCI_TUNE_RL_TT 0
|
|
#define EHCI_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */
|
|
#define EHCI_TUNE_MULT_TT 1
|
|
#define EHCI_TUNE_FLS 2 /* (small) 256 frame schedule */
|
|
|
|
struct oxu_hcd;
|
|
|
|
/* EHCI register interface, corresponds to EHCI Revision 0.95 specification */
|
|
|
|
/* Section 2.2 Host Controller Capability Registers */
|
|
struct ehci_caps {
|
|
/* these fields are specified as 8 and 16 bit registers,
|
|
* but some hosts can't perform 8 or 16 bit PCI accesses.
|
|
*/
|
|
u32 hc_capbase;
|
|
#define HC_LENGTH(p) (((p)>>00)&0x00ff) /* bits 7:0 */
|
|
#define HC_VERSION(p) (((p)>>16)&0xffff) /* bits 31:16 */
|
|
u32 hcs_params; /* HCSPARAMS - offset 0x4 */
|
|
#define HCS_DEBUG_PORT(p) (((p)>>20)&0xf) /* bits 23:20, debug port? */
|
|
#define HCS_INDICATOR(p) ((p)&(1 << 16)) /* true: has port indicators */
|
|
#define HCS_N_CC(p) (((p)>>12)&0xf) /* bits 15:12, #companion HCs */
|
|
#define HCS_N_PCC(p) (((p)>>8)&0xf) /* bits 11:8, ports per CC */
|
|
#define HCS_PORTROUTED(p) ((p)&(1 << 7)) /* true: port routing */
|
|
#define HCS_PPC(p) ((p)&(1 << 4)) /* true: port power control */
|
|
#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */
|
|
|
|
u32 hcc_params; /* HCCPARAMS - offset 0x8 */
|
|
#define HCC_EXT_CAPS(p) (((p)>>8)&0xff) /* for pci extended caps */
|
|
#define HCC_ISOC_CACHE(p) ((p)&(1 << 7)) /* true: can cache isoc frame */
|
|
#define HCC_ISOC_THRES(p) (((p)>>4)&0x7) /* bits 6:4, uframes cached */
|
|
#define HCC_CANPARK(p) ((p)&(1 << 2)) /* true: can park on async qh */
|
|
#define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1)) /* true: periodic_size changes*/
|
|
#define HCC_64BIT_ADDR(p) ((p)&(1)) /* true: can use 64-bit addr */
|
|
u8 portroute[8]; /* nibbles for routing - offset 0xC */
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
/* Section 2.3 Host Controller Operational Registers */
|
|
struct ehci_regs {
|
|
/* USBCMD: offset 0x00 */
|
|
u32 command;
|
|
/* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */
|
|
#define CMD_PARK (1<<11) /* enable "park" on async qh */
|
|
#define CMD_PARK_CNT(c) (((c)>>8)&3) /* how many transfers to park for */
|
|
#define CMD_LRESET (1<<7) /* partial reset (no ports, etc) */
|
|
#define CMD_IAAD (1<<6) /* "doorbell" interrupt async advance */
|
|
#define CMD_ASE (1<<5) /* async schedule enable */
|
|
#define CMD_PSE (1<<4) /* periodic schedule enable */
|
|
/* 3:2 is periodic frame list size */
|
|
#define CMD_RESET (1<<1) /* reset HC not bus */
|
|
#define CMD_RUN (1<<0) /* start/stop HC */
|
|
|
|
/* USBSTS: offset 0x04 */
|
|
u32 status;
|
|
#define STS_ASS (1<<15) /* Async Schedule Status */
|
|
#define STS_PSS (1<<14) /* Periodic Schedule Status */
|
|
#define STS_RECL (1<<13) /* Reclamation */
|
|
#define STS_HALT (1<<12) /* Not running (any reason) */
|
|
/* some bits reserved */
|
|
/* these STS_* flags are also intr_enable bits (USBINTR) */
|
|
#define STS_IAA (1<<5) /* Interrupted on async advance */
|
|
#define STS_FATAL (1<<4) /* such as some PCI access errors */
|
|
#define STS_FLR (1<<3) /* frame list rolled over */
|
|
#define STS_PCD (1<<2) /* port change detect */
|
|
#define STS_ERR (1<<1) /* "error" completion (overflow, ...) */
|
|
#define STS_INT (1<<0) /* "normal" completion (short, ...) */
|
|
|
|
#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
|
|
|
|
/* USBINTR: offset 0x08 */
|
|
u32 intr_enable;
|
|
|
|
/* FRINDEX: offset 0x0C */
|
|
u32 frame_index; /* current microframe number */
|
|
/* CTRLDSSEGMENT: offset 0x10 */
|
|
u32 segment; /* address bits 63:32 if needed */
|
|
/* PERIODICLISTBASE: offset 0x14 */
|
|
u32 frame_list; /* points to periodic list */
|
|
/* ASYNCLISTADDR: offset 0x18 */
|
|
u32 async_next; /* address of next async queue head */
|
|
|
|
u32 reserved[9];
|
|
|
|
/* CONFIGFLAG: offset 0x40 */
|
|
u32 configured_flag;
|
|
#define FLAG_CF (1<<0) /* true: we'll support "high speed" */
|
|
|
|
/* PORTSC: offset 0x44 */
|
|
u32 port_status[0]; /* up to N_PORTS */
|
|
/* 31:23 reserved */
|
|
#define PORT_WKOC_E (1<<22) /* wake on overcurrent (enable) */
|
|
#define PORT_WKDISC_E (1<<21) /* wake on disconnect (enable) */
|
|
#define PORT_WKCONN_E (1<<20) /* wake on connect (enable) */
|
|
/* 19:16 for port testing */
|
|
#define PORT_LED_OFF (0<<14)
|
|
#define PORT_LED_AMBER (1<<14)
|
|
#define PORT_LED_GREEN (2<<14)
|
|
#define PORT_LED_MASK (3<<14)
|
|
#define PORT_OWNER (1<<13) /* true: companion hc owns this port */
|
|
#define PORT_POWER (1<<12) /* true: has power (see PPC) */
|
|
#define PORT_USB11(x) (((x)&(3<<10)) == (1<<10)) /* USB 1.1 device */
|
|
/* 11:10 for detecting lowspeed devices (reset vs release ownership) */
|
|
/* 9 reserved */
|
|
#define PORT_RESET (1<<8) /* reset port */
|
|
#define PORT_SUSPEND (1<<7) /* suspend port */
|
|
#define PORT_RESUME (1<<6) /* resume it */
|
|
#define PORT_OCC (1<<5) /* over current change */
|
|
#define PORT_OC (1<<4) /* over current active */
|
|
#define PORT_PEC (1<<3) /* port enable change */
|
|
#define PORT_PE (1<<2) /* port enable */
|
|
#define PORT_CSC (1<<1) /* connect status change */
|
|
#define PORT_CONNECT (1<<0) /* device connected */
|
|
#define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_OCC)
|
|
} __attribute__ ((packed));
|
|
|
|
/* Appendix C, Debug port ... intended for use with special "debug devices"
|
|
* that can help if there's no serial console. (nonstandard enumeration.)
|
|
*/
|
|
struct ehci_dbg_port {
|
|
u32 control;
|
|
#define DBGP_OWNER (1<<30)
|
|
#define DBGP_ENABLED (1<<28)
|
|
#define DBGP_DONE (1<<16)
|
|
#define DBGP_INUSE (1<<10)
|
|
#define DBGP_ERRCODE(x) (((x)>>7)&0x07)
|
|
# define DBGP_ERR_BAD 1
|
|
# define DBGP_ERR_SIGNAL 2
|
|
#define DBGP_ERROR (1<<6)
|
|
#define DBGP_GO (1<<5)
|
|
#define DBGP_OUT (1<<4)
|
|
#define DBGP_LEN(x) (((x)>>0)&0x0f)
|
|
u32 pids;
|
|
#define DBGP_PID_GET(x) (((x)>>16)&0xff)
|
|
#define DBGP_PID_SET(data, tok) (((data)<<8)|(tok))
|
|
u32 data03;
|
|
u32 data47;
|
|
u32 address;
|
|
#define DBGP_EPADDR(dev, ep) (((dev)<<8)|(ep))
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
#define QTD_NEXT(dma) cpu_to_le32((u32)dma)
|
|
|
|
/*
|
|
* EHCI Specification 0.95 Section 3.5
|
|
* QTD: describe data transfer components (buffer, direction, ...)
|
|
* See Fig 3-6 "Queue Element Transfer Descriptor Block Diagram".
|
|
*
|
|
* These are associated only with "QH" (Queue Head) structures,
|
|
* used with control, bulk, and interrupt transfers.
|
|
*/
|
|
struct ehci_qtd {
|
|
/* first part defined by EHCI spec */
|
|
__le32 hw_next; /* see EHCI 3.5.1 */
|
|
__le32 hw_alt_next; /* see EHCI 3.5.2 */
|
|
__le32 hw_token; /* see EHCI 3.5.3 */
|
|
#define QTD_TOGGLE (1 << 31) /* data toggle */
|
|
#define QTD_LENGTH(tok) (((tok)>>16) & 0x7fff)
|
|
#define QTD_IOC (1 << 15) /* interrupt on complete */
|
|
#define QTD_CERR(tok) (((tok)>>10) & 0x3)
|
|
#define QTD_PID(tok) (((tok)>>8) & 0x3)
|
|
#define QTD_STS_ACTIVE (1 << 7) /* HC may execute this */
|
|
#define QTD_STS_HALT (1 << 6) /* halted on error */
|
|
#define QTD_STS_DBE (1 << 5) /* data buffer error (in HC) */
|
|
#define QTD_STS_BABBLE (1 << 4) /* device was babbling (qtd halted) */
|
|
#define QTD_STS_XACT (1 << 3) /* device gave illegal response */
|
|
#define QTD_STS_MMF (1 << 2) /* incomplete split transaction */
|
|
#define QTD_STS_STS (1 << 1) /* split transaction state */
|
|
#define QTD_STS_PING (1 << 0) /* issue PING? */
|
|
__le32 hw_buf[5]; /* see EHCI 3.5.4 */
|
|
__le32 hw_buf_hi[5]; /* Appendix B */
|
|
|
|
/* the rest is HCD-private */
|
|
dma_addr_t qtd_dma; /* qtd address */
|
|
struct list_head qtd_list; /* sw qtd list */
|
|
struct urb *urb; /* qtd's urb */
|
|
size_t length; /* length of buffer */
|
|
|
|
u32 qtd_buffer_len;
|
|
void *buffer;
|
|
dma_addr_t buffer_dma;
|
|
void *transfer_buffer;
|
|
void *transfer_dma;
|
|
} __attribute__ ((aligned(32)));
|
|
|
|
/* mask NakCnt+T in qh->hw_alt_next */
|
|
#define QTD_MASK cpu_to_le32 (~0x1f)
|
|
|
|
#define IS_SHORT_READ(token) (QTD_LENGTH(token) != 0 && QTD_PID(token) == 1)
|
|
|
|
/* Type tag from {qh, itd, sitd, fstn}->hw_next */
|
|
#define Q_NEXT_TYPE(dma) ((dma) & cpu_to_le32 (3 << 1))
|
|
|
|
/* values for that type tag */
|
|
#define Q_TYPE_QH cpu_to_le32 (1 << 1)
|
|
|
|
/* next async queue entry, or pointer to interrupt/periodic QH */
|
|
#define QH_NEXT(dma) (cpu_to_le32(((u32)dma)&~0x01f)|Q_TYPE_QH)
|
|
|
|
/* for periodic/async schedules and qtd lists, mark end of list */
|
|
#define EHCI_LIST_END cpu_to_le32(1) /* "null pointer" to hw */
|
|
|
|
/*
|
|
* Entries in periodic shadow table are pointers to one of four kinds
|
|
* of data structure. That's dictated by the hardware; a type tag is
|
|
* encoded in the low bits of the hardware's periodic schedule. Use
|
|
* Q_NEXT_TYPE to get the tag.
|
|
*
|
|
* For entries in the async schedule, the type tag always says "qh".
|
|
*/
|
|
union ehci_shadow {
|
|
struct ehci_qh *qh; /* Q_TYPE_QH */
|
|
__le32 *hw_next; /* (all types) */
|
|
void *ptr;
|
|
};
|
|
|
|
/*
|
|
* EHCI Specification 0.95 Section 3.6
|
|
* QH: describes control/bulk/interrupt endpoints
|
|
* See Fig 3-7 "Queue Head Structure Layout".
|
|
*
|
|
* These appear in both the async and (for interrupt) periodic schedules.
|
|
*/
|
|
|
|
struct ehci_qh {
|
|
/* first part defined by EHCI spec */
|
|
__le32 hw_next; /* see EHCI 3.6.1 */
|
|
__le32 hw_info1; /* see EHCI 3.6.2 */
|
|
#define QH_HEAD 0x00008000
|
|
__le32 hw_info2; /* see EHCI 3.6.2 */
|
|
#define QH_SMASK 0x000000ff
|
|
#define QH_CMASK 0x0000ff00
|
|
#define QH_HUBADDR 0x007f0000
|
|
#define QH_HUBPORT 0x3f800000
|
|
#define QH_MULT 0xc0000000
|
|
__le32 hw_current; /* qtd list - see EHCI 3.6.4 */
|
|
|
|
/* qtd overlay (hardware parts of a struct ehci_qtd) */
|
|
__le32 hw_qtd_next;
|
|
__le32 hw_alt_next;
|
|
__le32 hw_token;
|
|
__le32 hw_buf[5];
|
|
__le32 hw_buf_hi[5];
|
|
|
|
/* the rest is HCD-private */
|
|
dma_addr_t qh_dma; /* address of qh */
|
|
union ehci_shadow qh_next; /* ptr to qh; or periodic */
|
|
struct list_head qtd_list; /* sw qtd list */
|
|
struct ehci_qtd *dummy;
|
|
struct ehci_qh *reclaim; /* next to reclaim */
|
|
|
|
struct oxu_hcd *oxu;
|
|
struct kref kref;
|
|
unsigned stamp;
|
|
|
|
u8 qh_state;
|
|
#define QH_STATE_LINKED 1 /* HC sees this */
|
|
#define QH_STATE_UNLINK 2 /* HC may still see this */
|
|
#define QH_STATE_IDLE 3 /* HC doesn't see this */
|
|
#define QH_STATE_UNLINK_WAIT 4 /* LINKED and on reclaim q */
|
|
#define QH_STATE_COMPLETING 5 /* don't touch token.HALT */
|
|
|
|
/* periodic schedule info */
|
|
u8 usecs; /* intr bandwidth */
|
|
u8 gap_uf; /* uframes split/csplit gap */
|
|
u8 c_usecs; /* ... split completion bw */
|
|
u16 tt_usecs; /* tt downstream bandwidth */
|
|
unsigned short period; /* polling interval */
|
|
unsigned short start; /* where polling starts */
|
|
#define NO_FRAME ((unsigned short)~0) /* pick new start */
|
|
struct usb_device *dev; /* access to TT */
|
|
} __attribute__ ((aligned(32)));
|
|
|
|
/*
|
|
* Proper OXU210HP structs
|
|
*/
|
|
|
|
#define OXU_OTG_CORE_OFFSET 0x00400
|
|
#define OXU_OTG_CAP_OFFSET (OXU_OTG_CORE_OFFSET + 0x100)
|
|
#define OXU_SPH_CORE_OFFSET 0x00800
|
|
#define OXU_SPH_CAP_OFFSET (OXU_SPH_CORE_OFFSET + 0x100)
|
|
|
|
#define OXU_OTG_MEM 0xE000
|
|
#define OXU_SPH_MEM 0x16000
|
|
|
|
/* Only how many elements & element structure are specifies here. */
|
|
/* 2 host controllers are enabled - total size <= 28 kbytes */
|
|
#define DEFAULT_I_TDPS 1024
|
|
#define QHEAD_NUM 16
|
|
#define QTD_NUM 32
|
|
#define SITD_NUM 8
|
|
#define MURB_NUM 8
|
|
|
|
#define BUFFER_NUM 8
|
|
#define BUFFER_SIZE 512
|
|
|
|
struct oxu_info {
|
|
struct usb_hcd *hcd[2];
|
|
};
|
|
|
|
struct oxu_buf {
|
|
u8 buffer[BUFFER_SIZE];
|
|
} __attribute__ ((aligned(BUFFER_SIZE)));
|
|
|
|
struct oxu_onchip_mem {
|
|
struct oxu_buf db_pool[BUFFER_NUM];
|
|
|
|
u32 frame_list[DEFAULT_I_TDPS];
|
|
struct ehci_qh qh_pool[QHEAD_NUM];
|
|
struct ehci_qtd qtd_pool[QTD_NUM];
|
|
} __attribute__ ((aligned(4 << 10)));
|
|
|
|
#define EHCI_MAX_ROOT_PORTS 15 /* see HCS_N_PORTS */
|
|
|
|
struct oxu_murb {
|
|
struct urb urb;
|
|
struct urb *main;
|
|
u8 last;
|
|
};
|
|
|
|
struct oxu_hcd { /* one per controller */
|
|
unsigned int is_otg:1;
|
|
|
|
u8 qh_used[QHEAD_NUM];
|
|
u8 qtd_used[QTD_NUM];
|
|
u8 db_used[BUFFER_NUM];
|
|
u8 murb_used[MURB_NUM];
|
|
|
|
struct oxu_onchip_mem __iomem *mem;
|
|
spinlock_t mem_lock;
|
|
|
|
struct timer_list urb_timer;
|
|
|
|
struct ehci_caps __iomem *caps;
|
|
struct ehci_regs __iomem *regs;
|
|
|
|
__u32 hcs_params; /* cached register copy */
|
|
spinlock_t lock;
|
|
|
|
/* async schedule support */
|
|
struct ehci_qh *async;
|
|
struct ehci_qh *reclaim;
|
|
unsigned reclaim_ready:1;
|
|
unsigned scanning:1;
|
|
|
|
/* periodic schedule support */
|
|
unsigned periodic_size;
|
|
__le32 *periodic; /* hw periodic table */
|
|
dma_addr_t periodic_dma;
|
|
unsigned i_thresh; /* uframes HC might cache */
|
|
|
|
union ehci_shadow *pshadow; /* mirror hw periodic table */
|
|
int next_uframe; /* scan periodic, start here */
|
|
unsigned periodic_sched; /* periodic activity count */
|
|
|
|
/* per root hub port */
|
|
unsigned long reset_done[EHCI_MAX_ROOT_PORTS];
|
|
/* bit vectors (one bit per port) */
|
|
unsigned long bus_suspended; /* which ports were
|
|
* already suspended at the
|
|
* start of a bus suspend
|
|
*/
|
|
unsigned long companion_ports;/* which ports are dedicated
|
|
* to the companion controller
|
|
*/
|
|
|
|
struct timer_list watchdog;
|
|
unsigned long actions;
|
|
unsigned stamp;
|
|
unsigned long next_statechange;
|
|
u32 command;
|
|
|
|
/* SILICON QUIRKS */
|
|
struct list_head urb_list; /* this is the head to urb
|
|
* queue that didn't get enough
|
|
* resources
|
|
*/
|
|
struct oxu_murb *murb_pool; /* murb per split big urb */
|
|
unsigned urb_len;
|
|
|
|
u8 sbrn; /* packed release number */
|
|
};
|
|
|
|
#define EHCI_IAA_JIFFIES (HZ/100) /* arbitrary; ~10 msec */
|
|
#define EHCI_IO_JIFFIES (HZ/10) /* io watchdog > irq_thresh */
|
|
#define EHCI_ASYNC_JIFFIES (HZ/20) /* async idle timeout */
|
|
#define EHCI_SHRINK_JIFFIES (HZ/200) /* async qh unlink delay */
|
|
|
|
enum ehci_timer_action {
|
|
TIMER_IO_WATCHDOG,
|
|
TIMER_IAA_WATCHDOG,
|
|
TIMER_ASYNC_SHRINK,
|
|
TIMER_ASYNC_OFF,
|
|
};
|
|
|
|
#include <linux/oxu210hp.h>
|