Merge tag 'pci-v5.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...

[linux-2.6-microblaze.git] / drivers / pci / pci.c

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index e39c549..6d4d5a2 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -15,7 +15,6 @@
 #include <linux/init.h>
 #include <linux/msi.h>
 #include <linux/of.h>
-#include <linux/of_pci.h>
 #include <linux/pci.h>
 #include <linux/pm.h>
 #include <linux/slab.h>
@@ -30,8 +29,6 @@
 #include <linux/pm_runtime.h>
 #include <linux/pci_hotplug.h>
 #include <linux/vmalloc.h>
-#include <linux/pci-ats.h>
-#include <asm/setup.h>
 #include <asm/dma.h>
 #include <linux/aer.h>
 #include "pci.h"
@@ -49,7 +46,7 @@ EXPORT_SYMBOL(isa_dma_bridge_buggy);
 int pci_pci_problems;
 EXPORT_SYMBOL(pci_pci_problems);
 
-unsigned int pci_pm_d3_delay;
+unsigned int pci_pm_d3hot_delay;
 
 static void pci_pme_list_scan(struct work_struct *work);
 
@@ -66,10 +63,10 @@ struct pci_pme_device {
 
 static void pci_dev_d3_sleep(struct pci_dev *dev)
 {
-       unsigned int delay = dev->d3_delay;
+       unsigned int delay = dev->d3hot_delay;
 
-       if (delay < pci_pm_d3_delay)
-               delay = pci_pm_d3_delay;
+       if (delay < pci_pm_d3hot_delay)
+               delay = pci_pm_d3hot_delay;
 
        if (delay)
                msleep(delay);
@@ -101,7 +98,19 @@ unsigned long pci_hotplug_mmio_pref_size = DEFAULT_HOTPLUG_MMIO_PREF_SIZE;
 #define DEFAULT_HOTPLUG_BUS_SIZE       1
 unsigned long pci_hotplug_bus_size = DEFAULT_HOTPLUG_BUS_SIZE;
 
+
+/* PCIe MPS/MRRS strategy; can be overridden by kernel command-line param */
+#ifdef CONFIG_PCIE_BUS_TUNE_OFF
+enum pcie_bus_config_types pcie_bus_config = PCIE_BUS_TUNE_OFF;
+#elif defined CONFIG_PCIE_BUS_SAFE
+enum pcie_bus_config_types pcie_bus_config = PCIE_BUS_SAFE;
+#elif defined CONFIG_PCIE_BUS_PERFORMANCE
+enum pcie_bus_config_types pcie_bus_config = PCIE_BUS_PERFORMANCE;
+#elif defined CONFIG_PCIE_BUS_PEER2PEER
+enum pcie_bus_config_types pcie_bus_config = PCIE_BUS_PEER2PEER;
+#else
 enum pcie_bus_config_types pcie_bus_config = PCIE_BUS_DEFAULT;
+#endif
 
 /*
  * The default CLS is used if arch didn't set CLS explicitly and not
@@ -876,6 +885,10 @@ static void pci_std_enable_acs(struct pci_dev *dev)
        /* Upstream Forwarding */
        ctrl |= (cap & PCI_ACS_UF);
 
+       /* Enable Translation Blocking for external devices */
+       if (dev->external_facing || dev->untrusted)
+               ctrl |= (cap & PCI_ACS_TB);
+
        pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl);
 }
 
@@ -1065,7 +1078,7 @@ static int pci_raw_set_power_state(struct pci_dev *dev, pci_power_t state)
        if (state == PCI_D3hot || dev->current_state == PCI_D3hot)
                pci_dev_d3_sleep(dev);
        else if (state == PCI_D2 || dev->current_state == PCI_D2)
-               msleep(PCI_PM_D2_DELAY);
+               udelay(PCI_PM_D2_DELAY);
 
        pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
        dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK);
@@ -3013,7 +3026,7 @@ void pci_pm_init(struct pci_dev *dev)
        }
 
        dev->pm_cap = pm;
-       dev->d3_delay = PCI_PM_D3_WAIT;
+       dev->d3hot_delay = PCI_PM_D3HOT_WAIT;
        dev->d3cold_delay = PCI_PM_D3COLD_WAIT;
        dev->bridge_d3 = pci_bridge_d3_possible(dev);
        dev->d3cold_allowed = true;
@@ -3038,7 +3051,7 @@ void pci_pm_init(struct pci_dev *dev)
                         (pmc & PCI_PM_CAP_PME_D0) ? " D0" : "",
                         (pmc & PCI_PM_CAP_PME_D1) ? " D1" : "",
                         (pmc & PCI_PM_CAP_PME_D2) ? " D2" : "",
-                        (pmc & PCI_PM_CAP_PME_D3) ? " D3hot" : "",
+                        (pmc & PCI_PM_CAP_PME_D3hot) ? " D3hot" : "",
                         (pmc & PCI_PM_CAP_PME_D3cold) ? " D3cold" : "");
                dev->pme_support = pmc >> PCI_PM_CAP_PME_SHIFT;
                dev->pme_poll = true;
@@ -4621,7 +4634,7 @@ static int pci_af_flr(struct pci_dev *dev, int probe)
  *
  * NOTE: This causes the caller to sleep for twice the device power transition
  * cooldown period, which for the D0->D3hot and D3hot->D0 transitions is 10 ms
- * by default (i.e. unless the @dev's d3_delay field has a different value).
+ * by default (i.e. unless the @dev's d3hot_delay field has a different value).
  * Moreover, only devices in D0 can be reset by this function.
  */
 static int pci_pm_reset(struct pci_dev *dev, int probe)
@@ -4701,9 +4714,7 @@ static bool pcie_wait_for_link_delay(struct pci_dev *pdev, bool active,
        }
        if (active && ret)
                msleep(delay);
-       else if (ret != active)
-               pci_info(pdev, "Data Link Layer Link Active not %s in 1000 msec\n",
-                       active ? "set" : "cleared");
+
        return ret == active;
 }
 
@@ -4828,6 +4839,7 @@ void pci_bridge_wait_for_secondary_bus(struct pci_dev *dev)
                        delay);
                if (!pcie_wait_for_link_delay(dev, true, delay)) {
                        /* Did not train, no need to wait any further */
+                       pci_info(dev, "Data Link Layer Link Active not set in 1000 msec\n");
                        return;
                }
        }
@@ -4920,16 +4932,10 @@ static int pci_reset_hotplug_slot(struct hotplug_slot *hotplug, int probe)
 
 static int pci_dev_reset_slot_function(struct pci_dev *dev, int probe)
 {
-       struct pci_dev *pdev;
-
-       if (dev->subordinate || !dev->slot ||
+       if (dev->multifunction || dev->subordinate || !dev->slot ||
            dev->dev_flags & PCI_DEV_FLAGS_NO_BUS_RESET)
                return -ENOTTY;
 
-       list_for_each_entry(pdev, &dev->bus->devices, bus_list)
-               if (pdev != dev && pdev->slot == dev->slot)
-                       return -ENOTTY;
-
        return pci_reset_hotplug_slot(dev->slot->hotplug, probe);
 }
 
@@ -6005,7 +6011,7 @@ int pci_set_vga_state(struct pci_dev *dev, bool decode,
 
        if (flags & PCI_VGA_STATE_CHANGE_DECODES) {
                pci_read_config_word(dev, PCI_COMMAND, &cmd);
-               if (decode == true)
+               if (decode)
                        cmd |= command_bits;
                else
                        cmd &= ~command_bits;
@@ -6021,7 +6027,7 @@ int pci_set_vga_state(struct pci_dev *dev, bool decode,
                if (bridge) {
                        pci_read_config_word(bridge, PCI_BRIDGE_CONTROL,
                                             &cmd);
-                       if (decode == true)
+                       if (decode)
                                cmd |= PCI_BRIDGE_CTL_VGA;
                        else
                                cmd &= ~PCI_BRIDGE_CTL_VGA;
@@ -6350,7 +6356,7 @@ static ssize_t resource_alignment_show(struct bus_type *bus, char *buf)
 
        spin_lock(&resource_alignment_lock);
        if (resource_alignment_param)
-               count = snprintf(buf, PAGE_SIZE, "%s", resource_alignment_param);
+               count = scnprintf(buf, PAGE_SIZE, "%s", resource_alignment_param);
        spin_unlock(&resource_alignment_lock);
 
        /*