return retval;
}
#endif
+ /*
+ * Check the compiler generated sizes of structures that must be laid
+ * out in specific ways for hardware access.
+ */
+ BUILD_BUG_ON(sizeof(struct xhci_doorbell_array) != 256*32/8);
+ BUILD_BUG_ON(sizeof(struct xhci_slot_ctx) != 8*32/8);
+ BUILD_BUG_ON(sizeof(struct xhci_ep_ctx) != 8*32/8);
+ /* xhci_device_control has eight fields, and also
+ * embeds one xhci_slot_ctx and 31 xhci_ep_ctx
+ */
+ BUILD_BUG_ON(sizeof(struct xhci_device_control) != (8+8+8*31)*32/8);
+ BUILD_BUG_ON(sizeof(struct xhci_stream_ctx) != 4*32/8);
+ BUILD_BUG_ON(sizeof(union xhci_trb) != 4*32/8);
+ BUILD_BUG_ON(sizeof(struct xhci_erst_entry) != 4*32/8);
+ BUILD_BUG_ON(sizeof(struct xhci_cap_regs) != 7*32/8);
+ BUILD_BUG_ON(sizeof(struct xhci_intr_reg) != 8*32/8);
+ /* xhci_run_regs has eight fields and embeds 128 xhci_intr_regs */
+ BUILD_BUG_ON(sizeof(struct xhci_run_regs) != (8+8*128)*32/8);
+ BUILD_BUG_ON(sizeof(struct xhci_doorbell_array) != 256*32/8);
return 0;
}
module_init(xhci_hcd_init);
u32 db_off;
u32 run_regs_off;
/* Reserved up to (CAPLENGTH - 0x1C) */
-} __attribute__ ((packed));
+};
/* hc_capbase bitmasks */
/* bits 7:0 - how long is the Capabilities register */
u32 reserved5;
/* registers for ports 2-255 */
u32 reserved6[NUM_PORT_REGS*254];
-} __attribute__ ((packed));
+};
/* USBCMD - USB command - command bitmasks */
/* start/stop HC execution - do not write unless HC is halted*/
/**
- * struct intr_reg - Interrupt Register Set
+ * struct xhci_intr_reg - Interrupt Register Set
* @irq_pending: IMAN - Interrupt Management Register. Used to enable
* interrupts and check for pending interrupts.
* @irq_control: IMOD - Interrupt Moderation Register.
* position of the Enqueue Pointer." The HCD (Linux) processes those events and
* updates the dequeue pointer.
*/
-struct intr_reg {
+struct xhci_intr_reg {
u32 irq_pending;
u32 irq_control;
u32 erst_size;
u32 rsvd;
u32 erst_base[2];
u32 erst_dequeue[2];
-} __attribute__ ((packed));
+};
/* irq_pending bitmasks */
#define ER_IRQ_PENDING(p) ((p) & 0x1)
* or larger accesses"
*/
struct xhci_run_regs {
- u32 microframe_index;
- u32 rsvd[7];
- struct intr_reg ir_set[128];
-} __attribute__ ((packed));
+ u32 microframe_index;
+ u32 rsvd[7];
+ struct xhci_intr_reg ir_set[128];
+};
/**
* struct doorbell_array
*/
struct xhci_doorbell_array {
u32 doorbell[256];
-} __attribute__ ((packed));
+};
#define DB_TARGET_MASK 0xFFFFFF00
#define DB_STREAM_ID_MASK 0x0000FFFF
u32 dev_state;
/* offset 0x10 to 0x1f reserved for HC internal use */
u32 reserved[4];
-} __attribute__ ((packed));
+};
/* dev_info bitmasks */
/* Route String - 0:19 */
u32 tx_info;
/* offset 0x14 - 0x1f reserved for HC internal use */
u32 reserved[3];
-} __attribute__ ((packed));
+};
/* ep_info bitmasks */
/*
u32 rsvd[6];
struct xhci_slot_ctx slot;
struct xhci_ep_ctx ep[31];
-} __attribute__ ((packed));
+};
/* drop context bitmasks */
#define DROP_EP(x) (0x1 << x)
u32 dev_context_ptrs[2*MAX_HC_SLOTS];
/* private xHCD pointers */
dma_addr_t dma;
-} __attribute__ ((packed));
+};
/* TODO: write function to set the 64-bit device DMA address */
/*
* TODO: change this to be dynamically sized at HC mem init time since the HC
u32 stream_ring[2];
/* offset 0x14 - 0x1f reserved for HC internal use */
u32 reserved[2];
-} __attribute__ ((packed));
+};
struct xhci_transfer_event {
u32 transfer_len;
/* This field is interpreted differently based on the type of TRB */
u32 flags;
-} __attribute__ ((packed));
+};
/** Transfer Event bit fields **/
#define TRB_TO_EP_ID(p) (((p) >> 16) & 0x1f)
u32 segment_ptr[2];
u32 intr_target;
u32 control;
-} __attribute__ ((packed));
+};
/* control bitfields */
#define LINK_TOGGLE (0x1<<1)
u32 cmd_trb[2];
u32 status;
u32 flags;
-} __attribute__ ((packed));
+};
/* flags bitmasks */
/* bits 16:23 are the virtual function ID */
struct xhci_generic_trb {
u32 field[4];
-} __attribute__ ((packed));
+};
union xhci_trb {
struct xhci_link_trb link;
/* private to HCD */
struct xhci_segment *next;
dma_addr_t dma;
-} __attribute__ ((packed));
+};
struct xhci_td {
struct list_head td_list;
u32 seg_size;
/* Set to zero */
u32 rsvd;
-} __attribute__ ((packed));
+};
struct xhci_erst {
struct xhci_erst_entry *entries;
struct xhci_run_regs __iomem *run_regs;
struct xhci_doorbell_array __iomem *dba;
/* Our HCD's current interrupter register set */
- struct intr_reg __iomem *ir_set;
+ struct xhci_intr_reg __iomem *ir_set;
/* Cached register copies of read-only HC data */
__u32 hcs_params1;
}
/* xHCI debugging */
-void xhci_print_ir_set(struct xhci_hcd *xhci, struct intr_reg *ir_set, int set_num);
+void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num);
void xhci_print_registers(struct xhci_hcd *xhci);
void xhci_dbg_regs(struct xhci_hcd *xhci);
void xhci_print_run_regs(struct xhci_hcd *xhci);
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff