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MFV: illumos-gate@9a48f6c443e5968307491ba7cc134bbdd0328801
9806 ehci_take_control() can infinite loop due to PCI invalid reads
Reviewed by: Dan McDonald <danmcd@joyent.com>
Reviewed by: Jason King <jason.king@joyent.com>
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Garrett D'Amore <garrett@damore.org>
Approved by: Richard Lowe <richlowe@richlowe.net>
Author: Robert Mustacchi <rm@joyent.com>


 263 #define EHCI_RH_PORT_ENABLE_CHANGE      0x00000008 /* Port enable change */
 264 #define EHCI_RH_PORT_ENABLE             0x00000004 /* Port enable */
 265 #define EHCI_RH_PORT_CONNECT_STS_CHANGE 0x00000002 /* Connect status change */
 266 #define EHCI_RH_PORT_CONNECT_STATUS     0x00000001 /* Connect status */
 267 
 268 /* Root hub port change bits mask */
 269 #define EHCI_RH_PORT_CLEAR_MASK         0x0000002A /* Clear bits mask */
 270 
 271 
 272 /*
 273  * EHCI Extended Capability Registers
 274  *
 275  * Currently this register only specifies BIOS handoff information.
 276  */
 277 #define EHCI_EX_CAP_SPECIFICS           0xFFFF0000
 278 #define EHCI_EX_CAP_SPECIFICS_SHIFT     16
 279 #define EHCI_EX_CAP_NEXT_PTR            0x0000FF00
 280 #define EHCI_EX_CAP_NEXT_PTR_SHIFT      8
 281 #define EHCI_EX_CAP_ID                  0x000000FF
 282 #define EHCI_EX_CAP_ID_SHIFT            0

 283 #define EHCI_EX_CAP_ID_BIOS_HANDOFF     1
 284 
 285 #define EHCI_LEGSUP_OS_OWNED_SEM        0x01000000
 286 #define EHCI_LEGSUP_BIOS_OWNED_SEM      0x00010000
 287 
 288 
 289 /*
 290  * Host Controller Periodic Frame List Area
 291  *
 292  * The Host Controller Periodic Frame List Area is a 4K structre of system
 293  * memory that is established by the Host Controller Driver (HCD) and this
 294  * structre is used for communication between HCD and HC. The HCD maintains
 295  * a pointer to this structure in the Host Controller (HC). This structure
 296  * must be aligned to a 4K boundary. There are 1024 periodic frame list
 297  * entries.
 298  */
 299 
 300 #define EHCI_NUM_INTR_QH_LISTS          32      /* No of intr lists */
 301 #define EHCI_NUM_STATIC_NODES           63      /* No of static QHs */
 302 #define EHCI_NUM_PERIODIC_FRAME_LISTS   1024    /* No of entries */




 263 #define EHCI_RH_PORT_ENABLE_CHANGE      0x00000008 /* Port enable change */
 264 #define EHCI_RH_PORT_ENABLE             0x00000004 /* Port enable */
 265 #define EHCI_RH_PORT_CONNECT_STS_CHANGE 0x00000002 /* Connect status change */
 266 #define EHCI_RH_PORT_CONNECT_STATUS     0x00000001 /* Connect status */
 267 
 268 /* Root hub port change bits mask */
 269 #define EHCI_RH_PORT_CLEAR_MASK         0x0000002A /* Clear bits mask */
 270 
 271 
 272 /*
 273  * EHCI Extended Capability Registers
 274  *
 275  * Currently this register only specifies BIOS handoff information.
 276  */
 277 #define EHCI_EX_CAP_SPECIFICS           0xFFFF0000
 278 #define EHCI_EX_CAP_SPECIFICS_SHIFT     16
 279 #define EHCI_EX_CAP_NEXT_PTR            0x0000FF00
 280 #define EHCI_EX_CAP_NEXT_PTR_SHIFT      8
 281 #define EHCI_EX_CAP_ID                  0x000000FF
 282 #define EHCI_EX_CAP_ID_SHIFT            0
 283 #define EHCI_EX_CAP_ID_RESERVED         0
 284 #define EHCI_EX_CAP_ID_BIOS_HANDOFF     1
 285 
 286 #define EHCI_LEGSUP_OS_OWNED_SEM        0x01000000
 287 #define EHCI_LEGSUP_BIOS_OWNED_SEM      0x00010000
 288 
 289 
 290 /*
 291  * Host Controller Periodic Frame List Area
 292  *
 293  * The Host Controller Periodic Frame List Area is a 4K structre of system
 294  * memory that is established by the Host Controller Driver (HCD) and this
 295  * structre is used for communication between HCD and HC. The HCD maintains
 296  * a pointer to this structure in the Host Controller (HC). This structure
 297  * must be aligned to a 4K boundary. There are 1024 periodic frame list
 298  * entries.
 299  */
 300 
 301 #define EHCI_NUM_INTR_QH_LISTS          32      /* No of intr lists */
 302 #define EHCI_NUM_STATIC_NODES           63      /* No of static QHs */
 303 #define EHCI_NUM_PERIODIC_FRAME_LISTS   1024    /* No of entries */