diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/usb/host/oxu210hp.h | 448 |
1 files changed, 448 insertions, 0 deletions
diff --git a/drivers/usb/host/oxu210hp.h b/drivers/usb/host/oxu210hp.h new file mode 100644 index 000000000..437044147 --- /dev/null +++ b/drivers/usb/host/oxu210hp.h @@ -0,0 +1,448 @@ +/* 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> |