Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 112 insertions, 23 deletions

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 34a928d3b7d2..f8030ee928e8 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1,4 +1,8 @@
 /*
+ * Enhanced Host Controller Interface (EHCI) driver for USB.
+ *
+ * Maintainer: Alan Stern <stern@rowland.harvard.edu>
+ *
  * Copyright (c) 2000-2004 by David Brownell
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -118,6 +122,7 @@ MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us\n");
 
 #include "ehci.h"
 #include "ehci-dbg.c"
+#include "pci-quirks.h"
 
 /*-------------------------------------------------------------------------*/
 
@@ -194,6 +199,17 @@ static int handshake (struct ehci_hcd *ehci, void __iomem *ptr,
         return -ETIMEDOUT;
 }
 
+/* check TDI/ARC silicon is in host mode */
+static int tdi_in_host_mode (struct ehci_hcd *ehci)
+{
+        u32 __iomem     *reg_ptr;
+        u32             tmp;
+
+        reg_ptr = (u32 __iomem *)(((u8 __iomem *)ehci->regs) + USBMODE);
+        tmp = ehci_readl(ehci, reg_ptr);
+        return (tmp & 3) == USBMODE_CM_HC;
+}
+
 /* force HC to halt state from unknown (EHCI spec section 2.3) */
 static int ehci_halt (struct ehci_hcd *ehci)
 {
@@ -202,6 +218,10 @@ static int ehci_halt (struct ehci_hcd *ehci)
         /* disable any irqs left enabled by previous code */
         ehci_writel(ehci, 0, &ehci->regs->intr_enable);
 
+        if (ehci_is_TDI(ehci) && tdi_in_host_mode(ehci) == 0) {
+                return 0;
+        }
+
         if ((temp & STS_HALT) != 0)
                 return 0;
 
@@ -514,6 +534,9 @@ static void ehci_stop (struct usb_hcd *hcd)
         spin_unlock_irq (&ehci->lock);
         ehci_mem_cleanup (ehci);
 
+        if (ehci->amd_pll_fix == 1)
+                usb_amd_dev_put();
+
 #ifdef  EHCI_STATS
         ehci_dbg (ehci, "irq normal %ld err %ld reclaim %ld (lost %ld)\n",
                 ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim,
@@ -549,6 +572,8 @@ static int ehci_init(struct usb_hcd *hcd)
         ehci->iaa_watchdog.function = ehci_iaa_watchdog;
         ehci->iaa_watchdog.data = (unsigned long) ehci;
 
+        hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params);
+
         /*
          * hw default: 1K periodic list heads, one per frame.
          * periodic_size can shrink by USBCMD update if hcc_params allows.
@@ -556,11 +581,20 @@ static int ehci_init(struct usb_hcd *hcd)
         ehci->periodic_size = DEFAULT_I_TDPS;
         INIT_LIST_HEAD(&ehci->cached_itd_list);
         INIT_LIST_HEAD(&ehci->cached_sitd_list);
+
+        if (HCC_PGM_FRAMELISTLEN(hcc_params)) {
+                /* periodic schedule size can be smaller than default */
+                switch (EHCI_TUNE_FLS) {
+                case 0: ehci->periodic_size = 1024; break;
+                case 1: ehci->periodic_size = 512; break;
+                case 2: ehci->periodic_size = 256; break;
+                default:        BUG();
+                }
+        }
         if ((retval = ehci_mem_init(ehci, GFP_KERNEL)) < 0)
                 return retval;
 
         /* controllers may cache some of the periodic schedule ... */
-        hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params);
         if (HCC_ISOC_CACHE(hcc_params))         // full frame cache
                 ehci->i_thresh = 2 + 8;
         else                                    // N microframes cached
@@ -614,12 +648,6 @@ static int ehci_init(struct usb_hcd *hcd)
                 /* periodic schedule size can be smaller than default */
                 temp &= ~(3 << 2);
                 temp |= (EHCI_TUNE_FLS << 2);
-                switch (EHCI_TUNE_FLS) {
-                case 0: ehci->periodic_size = 1024; break;
-                case 1: ehci->periodic_size = 512; break;
-                case 2: ehci->periodic_size = 256; break;
-                default:        BUG();
-                }
         }
         if (HCC_LPM(hcc_params)) {
                 /* support link power management EHCI 1.1 addendum */
@@ -651,7 +679,12 @@ static int ehci_run (struct usb_hcd *hcd)
         hcd->uses_new_polling = 1;
 
         /* EHCI spec section 4.1 */
-        if ((retval = ehci_reset(ehci)) != 0) {
+        /*
+         * TDI driver does the ehci_reset in their reset callback.
+         * Don't reset here, because configuration settings will
+         * vanish.
+         */
+        if (!ehci_is_TDI(ehci) && (retval = ehci_reset(ehci)) != 0) {
                 ehci_mem_cleanup(ehci);
                 return retval;
         }
@@ -710,7 +743,7 @@ static int ehci_run (struct usb_hcd *hcd)
         up_write(&ehci_cf_port_reset_rwsem);
         ehci->last_periodic_enable = ktime_get_real();
 
-        temp = HC_VERSION(ehci_readl(ehci, &ehci->caps->hc_capbase));
+        temp = HC_VERSION(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
         ehci_info (ehci,
                 "USB %x.%x started, EHCI %x.%02x%s\n",
                 ((ehci->sbrn & 0xf0)>>4), (ehci->sbrn & 0x0f),
@@ -748,8 +781,9 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
                 goto dead;
         }
 
+        /* Shared IRQ? */
         masked_status = status & INTR_MASK;
-        if (!masked_status) {           /* irq sharing? */
+        if (!masked_status || unlikely(hcd->state == HC_STATE_HALT)) {
                 spin_unlock(&ehci->lock);
                 return IRQ_NONE;
         }
@@ -844,6 +878,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
 dead:
                 ehci_reset(ehci);
                 ehci_writel(ehci, 0, &ehci->regs->configured_flag);
+                usb_hc_died(hcd);
                 /* generic layer kills/unlinks all urbs, then
                  * uses ehci_stop to clean up the rest
                  */
@@ -1048,10 +1083,11 @@ rescan:
                                 tmp && tmp != qh;
                                 tmp = tmp->qh_next.qh)
                         continue;
-                /* periodic qh self-unlinks on empty */
-                if (!tmp)
-                        goto nogood;
-                unlink_async (ehci, qh);
+                /* periodic qh self-unlinks on empty, and a COMPLETING qh
+                 * may already be unlinked.
+                 */
+                if (tmp)
+                        unlink_async(ehci, qh);
                 /* FALL THROUGH */
         case QH_STATE_UNLINK:           /* wait for hw to finish? */
         case QH_STATE_UNLINK_WAIT:
@@ -1068,7 +1104,6 @@ idle_timeout:
                 }
                 /* else FALL THROUGH */
         default:
-nogood:
                 /* caller was supposed to have unlinked any requests;
                  * that's not our job.  just leak this memory.
                  */
@@ -1080,7 +1115,6 @@ nogood:
         ep->hcpriv = NULL;
 done:
         spin_unlock_irqrestore (&ehci->lock, flags);
-        return;
 }
 
 static void
@@ -1152,12 +1186,17 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER         ehci_mxc_driver
 #endif
 
+#ifdef CONFIG_USB_EHCI_SH
+#include "ehci-sh.c"
+#define PLATFORM_DRIVER         ehci_hcd_sh_driver
+#endif
+
 #ifdef CONFIG_SOC_AU1200
 #include "ehci-au1xxx.c"
 #define PLATFORM_DRIVER         ehci_hcd_au1xxx_driver
 #endif
 
-#ifdef CONFIG_ARCH_OMAP3
+#ifdef CONFIG_USB_EHCI_HCD_OMAP
 #include "ehci-omap.c"
 #define        PLATFORM_DRIVER         ehci_hcd_omap_driver
 #endif
@@ -1197,6 +1236,56 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER         ehci_atmel_driver
 #endif
 
+#ifdef CONFIG_USB_OCTEON_EHCI
+#include "ehci-octeon.c"
+#define PLATFORM_DRIVER         ehci_octeon_driver
+#endif
+
+#ifdef CONFIG_USB_CNS3XXX_EHCI
+#include "ehci-cns3xxx.c"
+#define PLATFORM_DRIVER         cns3xxx_ehci_driver
+#endif
+
+#ifdef CONFIG_ARCH_VT8500
+#include "ehci-vt8500.c"
+#define PLATFORM_DRIVER         vt8500_ehci_driver
+#endif
+
+#ifdef CONFIG_PLAT_SPEAR
+#include "ehci-spear.c"
+#define PLATFORM_DRIVER         spear_ehci_hcd_driver
+#endif
+
+#ifdef CONFIG_USB_EHCI_MSM
+#include "ehci-msm.c"
+#define PLATFORM_DRIVER         ehci_msm_driver
+#endif
+
+#ifdef CONFIG_USB_EHCI_HCD_PMC_MSP
+#include "ehci-pmcmsp.c"
+#define PLATFORM_DRIVER         ehci_hcd_msp_driver
+#endif
+
+#ifdef CONFIG_USB_EHCI_TEGRA
+#include "ehci-tegra.c"
+#define PLATFORM_DRIVER         tegra_ehci_driver
+#endif
+
+#ifdef CONFIG_USB_EHCI_S5P
+#include "ehci-s5p.c"
+#define PLATFORM_DRIVER         s5p_ehci_driver
+#endif
+
+#ifdef CONFIG_USB_EHCI_ATH79
+#include "ehci-ath79.c"
+#define PLATFORM_DRIVER         ehci_ath79_driver
+#endif
+
+#ifdef CONFIG_SPARC_LEON
+#include "ehci-grlib.c"
+#define PLATFORM_DRIVER         ehci_grlib_driver
+#endif
+
 #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
     !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
     !defined(XILINX_OF_PLATFORM_DRIVER)
@@ -1249,24 +1338,24 @@ static int __init ehci_hcd_init(void)
 #endif
 
 #ifdef OF_PLATFORM_DRIVER
-        retval = of_register_platform_driver(&OF_PLATFORM_DRIVER);
+        retval = platform_driver_register(&OF_PLATFORM_DRIVER);
         if (retval < 0)
                 goto clean3;
 #endif
 
 #ifdef XILINX_OF_PLATFORM_DRIVER
-        retval = of_register_platform_driver(&XILINX_OF_PLATFORM_DRIVER);
+        retval = platform_driver_register(&XILINX_OF_PLATFORM_DRIVER);
         if (retval < 0)
                 goto clean4;
 #endif
         return retval;
 
 #ifdef XILINX_OF_PLATFORM_DRIVER
-        /* of_unregister_platform_driver(&XILINX_OF_PLATFORM_DRIVER); */
+        /* platform_driver_unregister(&XILINX_OF_PLATFORM_DRIVER); */
 clean4:
 #endif
 #ifdef OF_PLATFORM_DRIVER
-        of_unregister_platform_driver(&OF_PLATFORM_DRIVER);
+        platform_driver_unregister(&OF_PLATFORM_DRIVER);
 clean3:
 #endif
 #ifdef PS3_SYSTEM_BUS_DRIVER
@@ -1294,10 +1383,10 @@ module_init(ehci_hcd_init);
 static void __exit ehci_hcd_cleanup(void)
 {
 #ifdef XILINX_OF_PLATFORM_DRIVER
-        of_unregister_platform_driver(&XILINX_OF_PLATFORM_DRIVER);
+        platform_driver_unregister(&XILINX_OF_PLATFORM_DRIVER);
 #endif
 #ifdef OF_PLATFORM_DRIVER
-        of_unregister_platform_driver(&OF_PLATFORM_DRIVER);
+        platform_driver_unregister(&OF_PLATFORM_DRIVER);
 #endif
 #ifdef PLATFORM_DRIVER
         platform_driver_unregister(&PLATFORM_DRIVER);