svn commit: r342160 - head/sys/dev/pci

[Greg Lehey]

Author: grog
Date: Mon Dec 17 07:09:46 2018
New Revision: 342160
URL: https://svnweb.freebsd.org/changeset/base/342160

Log:
  Work around BIOS quirks on HPE Proliant MicroServer Gen10
  
  PR:		221350
  Submitted by:	Bob Bishop
  Reported by:	Rafal Lukawiecki
  Reviewed by:	jhb
  MFC after:	2 weeks

Modified:
  head/sys/dev/pci/pci.c

Modified: head/sys/dev/pci/pci.c
==============================================================================
--- head/sys/dev/pci/pci.c	Mon Dec 17 07:03:36 2018	(r342159)
+++ head/sys/dev/pci/pci.c	Mon Dec 17 07:09:46 2018	(r342160)
@@ -230,6 +230,7 @@ struct pci_quirk {
 #define	PCI_QUIRK_UNMAP_REG	4 /* Ignore PCI map register */
 #define	PCI_QUIRK_DISABLE_MSIX	5 /* MSI-X doesn't work */
 #define	PCI_QUIRK_MSI_INTX_BUG	6 /* PCIM_CMD_INTxDIS disables MSI */
+#define	PCI_QUIRK_REALLOC_BAR	7 /* Can't allocate memory at the default address */
 	int	arg1;
 	int	arg2;
 };
@@ -311,6 +312,12 @@ static const struct pci_quirk pci_quirks[] = {
 	{ 0x167814e4, PCI_QUIRK_MSI_INTX_BUG,	0,	0 }, /* BCM5715 */
 	{ 0x167914e4, PCI_QUIRK_MSI_INTX_BUG,	0,	0 }, /* BCM5715S */
 
+	/*
+	 * HPE Gen 10 VGA has a memory range that can't be allocated in the
+	 * expected place.
+	 */
+	{ 0x98741002, PCI_QUIRK_REALLOC_BAR,	0, 	0 },
+
 	{ 0 }
 };
 
@@ -3283,7 +3290,9 @@ pci_add_map(device_t bus, device_t dev, int reg, struc
 	 */
 	res = resource_list_reserve(rl, bus, dev, type, &reg, start, end, count,
 	    flags);
-	if (pci_do_realloc_bars && res == NULL && (start != 0 || end != ~0)) {
+	if ((pci_do_realloc_bars
+		|| pci_has_quirk(pci_get_devid(dev), PCI_QUIRK_REALLOC_BAR))
+	    && res == NULL && (start != 0 || end != ~0)) {
 		/*
 		 * If the allocation fails, try to allocate a resource for
 		 * this BAR using any available range.  The firmware felt