Merge branch 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstream-linus

* 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstream-linus:
  [MIPS] XSS1500: Fix compilation
  [MIPS] Bigsur: make defconfig more useful.
  [MIPS] Alchemy: work around clock misdetection on early Au1000
  [MIPS] Add missing 4KEC TLB refill handler
  [MIPS] BCM1480: Fix PCI/HT IO access
  [MIPS] Fix the installation condition of MIPS clocksource
  [MIPS] Check for GCC r10k-cache-barrier support
  [MIPS] I8253: Export i2853_lock to modules.
  [MIPS] VPE loader: Check result of memory allocation.

arch/mips/Makefile

@@ -482,10 +482,13 @@ endif
 # be 16kb aligned or the handling of the current variable will break.
 # Simplified: what IP22 does at 128MB+ in ksegN, IP28 does at 512MB+ in xkphys
 #
-#core-$(CONFIG_SGI_IP28)		+= arch/mips/sgi-ip22/ arch/mips/arc/arc_con.o
+ifdef CONFIG_SGI_IP28
+  ifeq ($(call cc-option-yn,-mr10k-cache-barrier=1), n)
+      $(error gcc doesn't support needed option -mr10k-cache-barrier=1)
+  endif
+endif
 core-$(CONFIG_SGI_IP28)		+= arch/mips/sgi-ip22/
 cflags-$(CONFIG_SGI_IP28)	+= -mr10k-cache-barrier=1 -Iinclude/asm-mips/mach-ip28
-#cflags-$(CONFIG_SGI_IP28)	+= -Iinclude/asm-mips/mach-ip28
 load-$(CONFIG_SGI_IP28)		+= 0xa800000020004000
 
 #

arch/mips/au1000/common/cputable.c

@@ -23,23 +23,23 @@ struct cpu_spec* cur_cpu_spec[NR_CPUS];
  * size of the table.
  */
 struct cpu_spec cpu_specs[] = {
-    { 0xffffffff, 0x00030100, "Au1000 DA", 1, 0 },
-    { 0xffffffff, 0x00030201, "Au1000 HA", 1, 0 },
-    { 0xffffffff, 0x00030202, "Au1000 HB", 1, 0 },
-    { 0xffffffff, 0x00030203, "Au1000 HC", 1, 1 },
-    { 0xffffffff, 0x00030204, "Au1000 HD", 1, 1 },
-    { 0xffffffff, 0x01030200, "Au1500 AB", 1, 1 },
-    { 0xffffffff, 0x01030201, "Au1500 AC", 0, 1 },
-    { 0xffffffff, 0x01030202, "Au1500 AD", 0, 1 },
-    { 0xffffffff, 0x02030200, "Au1100 AB", 1, 1 },
-    { 0xffffffff, 0x02030201, "Au1100 BA", 1, 1 },
-    { 0xffffffff, 0x02030202, "Au1100 BC", 1, 1 },
-    { 0xffffffff, 0x02030203, "Au1100 BD", 0, 1 },
-    { 0xffffffff, 0x02030204, "Au1100 BE", 0, 1 },
-    { 0xffffffff, 0x03030200, "Au1550 AA", 0, 1 },
-    { 0xffffffff, 0x04030200, "Au1200 AB", 0, 0 },
-    { 0xffffffff, 0x04030201, "Au1200 AC", 1, 0 },
-    { 0x00000000, 0x00000000, "Unknown Au1xxx", 1, 0 },
+	{ 0xffffffff, 0x00030100, "Au1000 DA", 1, 0, 1 },
+	{ 0xffffffff, 0x00030201, "Au1000 HA", 1, 0, 1 },
+	{ 0xffffffff, 0x00030202, "Au1000 HB", 1, 0, 1 },
+	{ 0xffffffff, 0x00030203, "Au1000 HC", 1, 1, 0 },
+	{ 0xffffffff, 0x00030204, "Au1000 HD", 1, 1, 0 },
+	{ 0xffffffff, 0x01030200, "Au1500 AB", 1, 1, 0 },
+	{ 0xffffffff, 0x01030201, "Au1500 AC", 0, 1, 0 },
+	{ 0xffffffff, 0x01030202, "Au1500 AD", 0, 1, 0 },
+	{ 0xffffffff, 0x02030200, "Au1100 AB", 1, 1, 0 },
+	{ 0xffffffff, 0x02030201, "Au1100 BA", 1, 1, 0 },
+	{ 0xffffffff, 0x02030202, "Au1100 BC", 1, 1, 0 },
+	{ 0xffffffff, 0x02030203, "Au1100 BD", 0, 1, 0 },
+	{ 0xffffffff, 0x02030204, "Au1100 BE", 0, 1, 0 },
+	{ 0xffffffff, 0x03030200, "Au1550 AA", 0, 1, 0 },
+	{ 0xffffffff, 0x04030200, "Au1200 AB", 0, 0, 0 },
+	{ 0xffffffff, 0x04030201, "Au1200 AC", 1, 0, 0 },
+	{ 0x00000000, 0x00000000, "Unknown Au1xxx", 1, 0, 0 }
 };
 
 void

arch/mips/au1000/common/setup.c

@@ -57,7 +57,7 @@ void __init plat_mem_setup(void)
 {
 	struct	cpu_spec *sp;
 	char *argptr;
-	unsigned long prid, cpupll, bclk = 1;
+	unsigned long prid, cpufreq, bclk = 1;
 
 	set_cpuspec();
 	sp = cur_cpu_spec[0];
@@ -65,8 +65,15 @@ void __init plat_mem_setup(void)
 	board_setup();  /* board specific setup */
 
 	prid = read_c0_prid();
-	cpupll = (au_readl(0xB1900060) & 0x3F) * 12;
-	printk("(PRId %08lx) @ %ldMHZ\n", prid, cpupll);
+	if (sp->cpu_pll_wo)
+#ifdef CONFIG_SOC_AU1000_FREQUENCY
+		cpufreq = CONFIG_SOC_AU1000_FREQUENCY / 1000000;
+#else
+		cpufreq = 396;
+#endif
+	else
+		cpufreq = (au_readl(SYS_CPUPLL) & 0x3F) * 12;
+	printk(KERN_INFO "(PRID %08lx) @ %ld MHz\n", prid, cpufreq);
 
 	bclk = sp->cpu_bclk;
 	if (bclk)

arch/mips/au1000/common/time.c

@@ -209,18 +209,22 @@ unsigned long cal_r4koff(void)
 		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C1S);
 		au_writel(0, SYS_TOYWRITE);
 		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C1S);
+	} else
+		no_au1xxx_32khz = 1;
 
-		cpu_speed = (au_readl(SYS_CPUPLL) & 0x0000003f) *
-			AU1000_SRC_CLK;
-	}
-	else {
-		/* The 32KHz oscillator isn't running, so assume there
-		 * isn't one and grab the processor speed from the PLL.
-		 * NOTE: some old silicon doesn't allow reading the PLL.
+	/*
+	 * On early Au1000, sys_cpupll was write-only. Since these
+	 * silicon versions of Au1000 are not sold by AMD, we don't bend
+	 * over backwards trying to determine the frequency.
 	 */
+	if (cur_cpu_spec[0]->cpu_pll_wo)
+#ifdef CONFIG_SOC_AU1000_FREQUENCY
+		cpu_speed = CONFIG_SOC_AU1000_FREQUENCY;
+#else
+		cpu_speed = 396000000;
+#endif
+	else
 		cpu_speed = (au_readl(SYS_CPUPLL) & 0x0000003f) * AU1000_SRC_CLK;
-		no_au1xxx_32khz = 1;
-	}
 	mips_hpt_frequency = cpu_speed;
 	// Equation: Baudrate = CPU / (SD * 2 * CLKDIV * 16)
 	set_au1x00_uart_baud_base(cpu_speed / (2 * ((int)(au_readl(SYS_POWERCTRL)&0x03) + 2) * 16));

arch/mips/au1000/xxs1500/board_setup.c

@@ -33,11 +33,10 @@
 #include <asm/cpu.h>
 #include <asm/bootinfo.h>
 #include <asm/irq.h>
-#include <asm/keyboard.h>
 #include <asm/mipsregs.h>
 #include <asm/reboot.h>
 #include <asm/pgtable.h>
-#include <asm/au1000.h>
+#include <asm/mach-au1x00/au1000.h>
 
 void board_reset(void)
 {

arch/mips/au1000/xxs1500/irqmap.c

@@ -45,7 +45,7 @@
 #include <asm/io.h>
 #include <asm/mipsregs.h>
 #include <asm/system.h>
-#include <asm/au1000.h>
+#include <asm/mach-au1x00/au1000.h>
 
 struct au1xxx_irqmap __initdata au1xxx_irq_map[] = {
 	{ AU1500_GPIO_204, INTC_INT_HIGH_LEVEL, 0},

arch/mips/kernel/i8253.c

@@ -15,6 +15,7 @@
 #include <asm/time.h>
 
 DEFINE_SPINLOCK(i8253_lock);
+EXPORT_SYMBOL(i8253_lock);
 
 /*
  * Initialize the PIT timer.

arch/mips/kernel/time.c

@@ -157,6 +157,6 @@ void __init time_init(void)
 {
 	plat_time_init();
 
-	if (mips_clockevent_init() || !cpu_has_mfc0_count_bug())
+	if (!mips_clockevent_init() || !cpu_has_mfc0_count_bug())
 		init_mips_clocksource();
 }

arch/mips/kernel/vpe.c

@@ -262,13 +262,21 @@ void dump_mtregs(void)
 /* Find some VPE program space  */
 static void *alloc_progmem(unsigned long len)
 {
+	void *addr;
+
 #ifdef CONFIG_MIPS_VPE_LOADER_TOM
-	/* this means you must tell linux to use less memory than you physically have */
-	return pfn_to_kaddr(max_pfn);
+	/*
+	 * This means you must tell Linux to use less memory than you
+	 * physically have, for example by passing a mem= boot argument.
+	 */
+	addr = pfn_to_kaddr(max_pfn);
+	memset(addr, 0, len);
 #else
-	// simple grab some mem for now
-	return kmalloc(len, GFP_KERNEL);
+	/* simple grab some mem for now */
+	addr = kzalloc(len, GFP_KERNEL);
 #endif
+
+	return addr;
 }
 
 static void release_progmem(void *ptr)
@@ -884,9 +892,10 @@ static int vpe_elfload(struct vpe * v)
 	}
 
 	v->load_addr = alloc_progmem(mod.core_size);
-	memset(v->load_addr, 0, mod.core_size);
+	if (!v->load_addr)
+		return -ENOMEM;
 
-	printk("VPE loader: loading to %p\n", v->load_addr);
+	pr_info("VPE loader: loading to %p\n", v->load_addr);
 
 	if (relocate) {
 		for (i = 0; i < hdr->e_shnum; i++) {

arch/mips/mm/tlbex.c

@@ -307,6 +307,7 @@ static void __cpuinit build_tlb_write_entry(u32 **p, struct uasm_label **l,
 	case CPU_R12000:
 	case CPU_R14000:
 	case CPU_4KC:
+	case CPU_4KEC:
 	case CPU_SB1:
 	case CPU_SB1A:
 	case CPU_4KSC:

arch/mips/pci/pci-bcm1480.c

@@ -185,8 +185,8 @@ static struct resource bcm1480_mem_resource = {
 
 static struct resource bcm1480_io_resource = {
 	.name	= "BCM1480 PCI I/O",
-	.start	= 0x2c000000UL,
-	.end	= 0x2dffffffUL,
+	.start	= A_BCM1480_PHYS_PCI_IO_MATCH_BYTES,
+	.end	= A_BCM1480_PHYS_PCI_IO_MATCH_BYTES + 0x1ffffffUL,
 	.flags	= IORESOURCE_IO,
 };
 
@@ -194,6 +194,7 @@ struct pci_controller bcm1480_controller = {
 	.pci_ops	= &bcm1480_pci_ops,
 	.mem_resource	= &bcm1480_mem_resource,
 	.io_resource	= &bcm1480_io_resource,
+	.io_offset      = A_BCM1480_PHYS_PCI_IO_MATCH_BYTES,
 };
 
 
@@ -251,6 +252,7 @@ static int __init bcm1480_pcibios_init(void)
 
 	bcm1480_controller.io_map_base = (unsigned long)
 		ioremap(A_BCM1480_PHYS_PCI_IO_MATCH_BYTES, 65536);
+	bcm1480_controller.io_map_base -= bcm1480_controller.io_offset;
 	set_io_port_base(bcm1480_controller.io_map_base);
 	isa_slot_offset = (unsigned long)
 		ioremap(A_BCM1480_PHYS_PCI_MEM_MATCH_BYTES, 1024*1024);

arch/mips/pci/pci-bcm1480ht.c

@@ -180,8 +180,8 @@ static struct resource bcm1480ht_mem_resource = {
 
 static struct resource bcm1480ht_io_resource = {
 	.name	= "BCM1480 HT I/O",
-	.start	= 0x00000000UL,
-	.end	= 0x01ffffffUL,
+	.start	= A_BCM1480_PHYS_HT_IO_MATCH_BYTES,
+	.end	= A_BCM1480_PHYS_HT_IO_MATCH_BYTES + 0x01ffffffUL,
 	.flags	= IORESOURCE_IO,
 };
 
@@ -191,29 +191,22 @@ struct pci_controller bcm1480ht_controller = {
 	.io_resource	= &bcm1480ht_io_resource,
 	.index		= 1,
 	.get_busno	= bcm1480ht_pcibios_get_busno,
+	.io_offset      = A_BCM1480_PHYS_HT_IO_MATCH_BYTES,
 };
 
 static int __init bcm1480ht_pcibios_init(void)
 {
-	uint32_t cmdreg;
-
 	ht_cfg_space = ioremap(A_BCM1480_PHYS_HT_CFG_MATCH_BITS, 16*1024*1024);
 
-	/*
-	 * See if the PCI bus has been configured by the firmware.
-	 */
-	cmdreg = READCFG32(CFGOFFSET(0, PCI_DEVFN(PCI_BRIDGE_DEVICE, 0),
-				     PCI_COMMAND));
-	if (!(cmdreg & PCI_COMMAND_MASTER)) {
-		printk("HT: Skipping HT probe. Bus is not initialized.\n");
-		iounmap(ht_cfg_space);
-		return 1; /* XXX */
-	}
+	/* CFE doesn't always init all HT paths, so we always scan */
 	bcm1480ht_bus_status |= PCI_BUS_ENABLED;
 
 	ht_eoi_space = (unsigned long)
 		ioremap(A_BCM1480_PHYS_HT_SPECIAL_MATCH_BYTES,
 			4 * 1024 * 1024);
+	bcm1480ht_controller.io_map_base = (unsigned long)
+		ioremap(A_BCM1480_PHYS_HT_IO_MATCH_BYTES, 65536);
+	bcm1480ht_controller.io_map_base -= bcm1480ht_controller.io_offset;
 
 	register_pci_controller(&bcm1480ht_controller);
 

include/asm-mips/mach-au1x00/au1000.h

@@ -1786,6 +1786,7 @@ struct cpu_spec {
 	char		*cpu_name;
 	unsigned char	cpu_od;		/* Set Config[OD] */
 	unsigned char	cpu_bclk;	/* Enable BCLK switching */
+	unsigned char	cpu_pll_wo;	/* sys_cpupll reg. write-only */
 };
 
 extern struct cpu_spec		cpu_specs[];