svn commit: r340595 - head/sys/dev/pci

[Jayachandran C.]

Author: jchandra
Date: Mon Nov 19 02:38:02 2018
New Revision: 340595
URL: https://svnweb.freebsd.org/changeset/base/340595

Log:
  pci_host_generic: remove unneeded ThunderX2 quirk
  
  The current quirk implementation writes a fixed address to the PCI BAR
  to fix a firmware bug. The PCI BARs are allocated by firmware and will
  change depending on PCI devices present. So using a fixed address here
  is not correct.
  
  This quirk worked around a firmware bug that programmed the MSI-X bar
  of the SATA controller incorrectly. The newer firmware does not have
  this issue, so it is better to drop this quirk altogether.
  
  Reviewed by:	andrew
  Differential Revision:	https://reviews.freebsd.org/D17655

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

Modified: head/sys/dev/pci/pci_host_generic.c
==============================================================================
--- head/sys/dev/pci/pci_host_generic.c	Mon Nov 19 02:30:12 2018	(r340594)
+++ head/sys/dev/pci/pci_host_generic.c	Mon Nov 19 02:38:02 2018	(r340595)
@@ -69,25 +69,6 @@ __FBSDID("$FreeBSD$");
 	(((func) & PCIE_FUNC_MASK) << PCIE_FUNC_SHIFT)	|	\
 	((reg) & PCIE_REG_MASK))
 
-typedef void (*pci_host_generic_quirk_function)(device_t);
-
-struct pci_host_generic_quirk_entry {
-	int impl;
-	int part;
-	int var;
-	int rev;
-	pci_host_generic_quirk_function func;
-};
-
-struct pci_host_generic_block_entry {
-	int impl;
-	int part;
-	int var;
-	int rev;
-	int bus;
-	int slot;
-};
-
 /* Forward prototypes */
 
 static uint32_t generic_pcie_read_config(device_t dev, u_int bus, u_int slot,
@@ -100,24 +81,6 @@ static int generic_pcie_read_ivar(device_t dev, device
 static int generic_pcie_write_ivar(device_t dev, device_t child, int index,
     uintptr_t value);
 
-#if defined(__aarch64__)
-static void pci_host_generic_apply_quirks(device_t);
-static void thunderx2_ahci_bar_quirk(device_t);
-
-struct pci_host_generic_quirk_entry pci_host_generic_quirks[] =
-{
-	{CPU_IMPL_CAVIUM, CPU_PART_THUNDERX2, 0, 0, thunderx2_ahci_bar_quirk},
-	{0, 0, 0, 0, NULL}
-};
-
-struct pci_host_generic_block_entry pci_host_generic_blocked[] =
-{
-	/* ThunderX2 AHCI on second socket */
-	{CPU_IMPL_CAVIUM, CPU_PART_THUNDERX2, 0, 0, 0x80, 0x10},
-	{0, 0, 0, 0, 0, 0}
-};
-#endif
-
 int
 pci_host_generic_core_attach(device_t dev)
 {
@@ -171,34 +134,9 @@ pci_host_generic_core_attach(device_t dev)
 		return (error);
 	}
 
-#if defined(__aarch64__)
-	pci_host_generic_apply_quirks(dev);
-#endif
-
 	return (0);
 }
 
-#if defined(__aarch64__)
-static void
-pci_host_generic_apply_quirks(device_t dev)
-{
-	struct pci_host_generic_quirk_entry *quirk;
-
-	quirk = pci_host_generic_quirks;
-	while (1) {
-		if (quirk->impl == 0)
-			break;
-
-		if (CPU_MATCH(CPU_IMPL_MASK | CPU_PART_MASK,
-		    quirk->impl, quirk->part, quirk->var, quirk->rev) &&
-		    quirk->func != NULL)
-			quirk->func(dev);
-
-		quirk++;
-	}
-}
-#endif
-
 static uint32_t
 generic_pcie_read_config(device_t dev, u_int bus, u_int slot,
     u_int func, u_int reg, int bytes)
@@ -208,29 +146,11 @@ generic_pcie_read_config(device_t dev, u_int bus, u_in
 	bus_space_tag_t	t;
 	uint64_t offset;
 	uint32_t data;
-#if defined(__aarch64__)
-	struct pci_host_generic_block_entry *block;
-#endif
 
 	if ((bus > PCI_BUSMAX) || (slot > PCI_SLOTMAX) ||
 	    (func > PCI_FUNCMAX) || (reg > PCIE_REGMAX))
 		return (~0U);
 
-#if defined(__aarch64__)
-	block = pci_host_generic_blocked;
-	while (1) {
-		if (block->impl == 0)
-			break;
-
-		if (CPU_MATCH(CPU_IMPL_MASK | CPU_PART_MASK,
-		    block->impl, block->part, block->var, block->rev) &&
-		    block->bus == bus && block->slot == slot)
-			return (~0);
-
-		block++;
-	}
-#endif
-
 	sc = device_get_softc(dev);
 
 	offset = PCIE_ADDR_OFFSET(bus, slot, func, reg);
@@ -472,22 +392,3 @@ static device_method_t generic_pcie_methods[] = {
 
 DEFINE_CLASS_0(pcib, generic_pcie_core_driver,
     generic_pcie_methods, sizeof(struct generic_pcie_core_softc));
-
-#if defined(__aarch64__)
-static void thunderx2_ahci_bar_quirk(device_t dev)
-{
-
-	/*
-	 * XXX:
-	 * On ThunderX2, AHCI BAR2 address is wrong. It needs to precisely
-	 * match the one described in datasheet. Fixup it unconditionally.
-	 */
-	if (device_get_unit(dev) == 0) {
-		device_printf(dev, "running AHCI BAR fixup\n");
-		PCIB_WRITE_CONFIG(dev, 0, 16, 0, 0x18, 0x01440000, 4);
-		PCIB_WRITE_CONFIG(dev, 0, 16, 0, 0x1c, 0x40, 4);
-		PCIB_WRITE_CONFIG(dev, 0, 16, 1, 0x18, 0x01450000, 4);
-		PCIB_WRITE_CONFIG(dev, 0, 16, 1, 0x1c, 0x40, 4);
-	}
-}
-#endif