Merge tag 'powerpc-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

- Fix broken soft dirty tracking when using the Radix MMU (>= P9)

- Fix ISA mapping when "ranges" property is not present, for PASemi
Nemo boards

- Fix a possible WARN_ON_ONCE hitting in BPF extable handling

- Fix incorrect DMA address handling when using 2MB TCEs

- Fix a bug in IOMMU table handling for SR-IOV devices

- Fix the recent rework of IOMMU handling which left arch code calling
clean up routines that are handled by the IOMMU core

- A few assorted build fixes

Thanks to Christian Zigotzky, Dan Horák, Gaurav Batra, Hari Bathini,
Jason Gunthorpe, Nathan Chancellor, Naveen N. Rao, Nicholas Piggin, Pali
Rohár, Randy Dunlap, and Rob Herring.

* tag 'powerpc-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/iommu: Incorrect DDW Table is referenced for SR-IOV device
powerpc/iommu: DMA address offset is incorrectly calculated with 2MB TCEs
powerpc/iommu: Remove iommu_del_device()
powerpc/crypto: Fix aes-gcm-p10 build when VSX=n
powerpc/bpf: populate extable entries only during the last pass
powerpc/boot: Disable power10 features after BOOTAFLAGS assignment
powerpc/64s/radix: Fix soft dirty tracking
powerpc/fsl_uli1575: fix kconfig warnings and build errors
powerpc/isa-bridge: Fix ISA mapping when "ranges" is not present

arch/powerpc/boot/Makefile

···
 
 BOOTCFLAGS    := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
 		 -fno-strict-aliasing -O2 -msoft-float -mno-altivec -mno-vsx \
-		 $(call cc-option,-mno-prefixed) $(call cc-option,-mno-pcrel) \
-		 $(call cc-option,-mno-mma) \
 		 $(call cc-option,-mno-spe) $(call cc-option,-mspe=no) \
 		 -pipe -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \
 		 $(LINUXINCLUDE)
···
 BOOTAFLAGS	:= -D__ASSEMBLY__ $(BOOTCFLAGS) -nostdinc
 
 BOOTARFLAGS	:= -crD
+
+BOOTCFLAGS	+= $(call cc-option,-mno-prefixed) \
+		   $(call cc-option,-mno-pcrel) \
+		   $(call cc-option,-mno-mma)
 
 ifdef CONFIG_CC_IS_CLANG
 BOOTCFLAGS += $(CLANG_FLAGS)

arch/powerpc/crypto/Kconfig

···
 
 config CRYPTO_AES_GCM_P10
 	tristate "Stitched AES/GCM acceleration support on P10 or later CPU (PPC)"
-	depends on PPC64 && CPU_LITTLE_ENDIAN
+	depends on PPC64 && CPU_LITTLE_ENDIAN && VSX
 	select CRYPTO_LIB_AES
 	select CRYPTO_ALGAPI
 	select CRYPTO_AEAD

arch/powerpc/include/asm/iommu.h

···
 				 int pci_domain_number, unsigned long pe_num);
 extern int iommu_add_device(struct iommu_table_group *table_group,
 		struct device *dev);
-extern void iommu_del_device(struct device *dev);
 extern long iommu_tce_xchg(struct mm_struct *mm, struct iommu_table *tbl,
 		unsigned long entry, unsigned long *hpa,
 		enum dma_data_direction *direction);
···
 		struct device *dev)
 {
 	return 0;
-}
-
-static inline void iommu_del_device(struct device *dev)
-{
 }
 #endif /* !CONFIG_IOMMU_API */
 

arch/powerpc/kernel/dma-iommu.c

···
 /* We support DMA to/from any memory page via the iommu */
 int dma_iommu_dma_supported(struct device *dev, u64 mask)
 {
-	struct iommu_table *tbl = get_iommu_table_base(dev);
+	struct iommu_table *tbl;
 
 	if (dev_is_pci(dev) && dma_iommu_bypass_supported(dev, mask)) {
 		/*
···
 			dev_dbg(dev, "iommu: 64-bit OK, using fixed ops\n");
 		return 1;
 	}
+
+	tbl = get_iommu_table_base(dev);
 
 	if (!tbl) {
 		dev_err(dev, "Warning: IOMMU dma not supported: mask 0x%08llx, table unavailable\n", mask);

arch/powerpc/kernel/iommu.c

···
 		/* Convert entry to a dma_addr_t */
 		entry += tbl->it_offset;
 		dma_addr = entry << tbl->it_page_shift;
-		dma_addr |= (s->offset & ~IOMMU_PAGE_MASK(tbl));
+		dma_addr |= (vaddr & ~IOMMU_PAGE_MASK(tbl));
 
 		DBG("  - %lu pages, entry: %lx, dma_addr: %lx\n",
 			    npages, entry, dma_addr);
···
 	unsigned int order;
 	unsigned int nio_pages, io_order;
 	struct page *page;
+	int tcesize = (1 << tbl->it_page_shift);
 
 	size = PAGE_ALIGN(size);
 	order = get_order(size);
···
 	memset(ret, 0, size);
 
 	/* Set up tces to cover the allocated range */
-	nio_pages = size >> tbl->it_page_shift;
+	nio_pages = IOMMU_PAGE_ALIGN(size, tbl) >> tbl->it_page_shift;
+
 	io_order = get_iommu_order(size, tbl);
 	mapping = iommu_alloc(dev, tbl, ret, nio_pages, DMA_BIDIRECTIONAL,
 			      mask >> tbl->it_page_shift, io_order, 0);
···
 		free_pages((unsigned long)ret, order);
 		return NULL;
 	}
-	*dma_handle = mapping;
+
+	*dma_handle = mapping | ((u64)ret & (tcesize - 1));
 	return ret;
 }
 
···
 		unsigned int nio_pages;
 
 		size = PAGE_ALIGN(size);
-		nio_pages = size >> tbl->it_page_shift;
+		nio_pages = IOMMU_PAGE_ALIGN(size, tbl) >> tbl->it_page_shift;
 		iommu_free(tbl, dma_handle, nio_pages);
 		size = PAGE_ALIGN(size);
 		free_pages((unsigned long)vaddr, get_order(size));
···
 	return iommu_probe_device(dev);
 }
 EXPORT_SYMBOL_GPL(iommu_add_device);
-
-void iommu_del_device(struct device *dev)
-{
-	/*
-	 * Some devices might not have IOMMU table and group
-	 * and we needn't detach them from the associated
-	 * IOMMU groups
-	 */
-	if (!device_iommu_mapped(dev)) {
-		pr_debug("iommu_tce: skipping device %s with no tbl\n",
-			 dev_name(dev));
-		return;
-	}
-
-	iommu_group_remove_device(dev);
-}
-EXPORT_SYMBOL_GPL(iommu_del_device);
 
 /*
  * A simple iommu_table_group_ops which only allows reusing the existing

arch/powerpc/kernel/isa-bridge.c

···
 	}
 
 inval_range:
-	if (!phb_io_base_phys) {
+	if (phb_io_base_phys) {
 		pr_err("no ISA IO ranges or unexpected isa range, mapping 64k\n");
 		remap_isa_base(phb_io_base_phys, 0x10000);
+		return 0;
 	}
-	return 0;
+	return -EINVAL;
 }
 
 

arch/powerpc/mm/book3s64/radix_pgtable.c

···
 				  pte_t entry, unsigned long address, int psize)
 {
 	struct mm_struct *mm = vma->vm_mm;
-	unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED |
-					      _PAGE_RW | _PAGE_EXEC);
+	unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_SOFT_DIRTY |
+					      _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC);
 
 	unsigned long change = pte_val(entry) ^ pte_val(*ptep);
 	/*

arch/powerpc/net/bpf_jit_comp.c

···
 		bpf_hdr = jit_data->header;
 		proglen = jit_data->proglen;
 		extra_pass = true;
+		/* During extra pass, ensure index is reset before repopulating extable entries */
+		cgctx.exentry_idx = 0;
 		goto skip_init_ctx;
 	}
 

arch/powerpc/platforms/Kconfig

···
 config FSL_ULI1575
 	bool "ULI1575 PCIe south bridge support"
 	depends on FSL_SOC_BOOKE || PPC_86xx
+	depends on PCI
 	select FSL_PCI
 	select GENERIC_ISA_DMA
 	help

arch/powerpc/platforms/powernv/pci.c

···
 	/* Configure IOMMU DMA hooks */
 	set_pci_dma_ops(&dma_iommu_ops);
 }
-
-static int pnv_tce_iommu_bus_notifier(struct notifier_block *nb,
-		unsigned long action, void *data)
-{
-	struct device *dev = data;
-
-	switch (action) {
-	case BUS_NOTIFY_DEL_DEVICE:
-		iommu_del_device(dev);
-		return 0;
-	default:
-		return 0;
-	}
-}
-
-static struct notifier_block pnv_tce_iommu_bus_nb = {
-	.notifier_call = pnv_tce_iommu_bus_notifier,
-};
-
-static int __init pnv_tce_iommu_bus_notifier_init(void)
-{
-	bus_register_notifier(&pci_bus_type, &pnv_tce_iommu_bus_nb);
-	return 0;
-}
-machine_subsys_initcall_sync(powernv, pnv_tce_iommu_bus_notifier_init);

arch/powerpc/platforms/pseries/iommu.c

···
 static void iommu_pseries_free_group(struct iommu_table_group *table_group,
 		const char *node_name)
 {
-	struct iommu_table *tbl;
-
 	if (!table_group)
 		return;
 
-	tbl = table_group->tables[0];
 #ifdef CONFIG_IOMMU_API
 	if (table_group->group) {
 		iommu_group_put(table_group->group);
 		BUG_ON(table_group->group);
 	}
 #endif
-	iommu_tce_table_put(tbl);
+
+	/* Default DMA window table is at index 0, while DDW at 1. SR-IOV
+	 * adapters only have table on index 1.
+	 */
+	if (table_group->tables[0])
+		iommu_tce_table_put(table_group->tables[0]);
+
+	if (table_group->tables[1])
+		iommu_tce_table_put(table_group->tables[1]);
 
 	kfree(table_group);
 }
···
 }
 
 __setup("multitce=", disable_multitce);
-
-static int tce_iommu_bus_notifier(struct notifier_block *nb,
-		unsigned long action, void *data)
-{
-	struct device *dev = data;
-
-	switch (action) {
-	case BUS_NOTIFY_DEL_DEVICE:
-		iommu_del_device(dev);
-		return 0;
-	default:
-		return 0;
-	}
-}
-
-static struct notifier_block tce_iommu_bus_nb = {
-	.notifier_call = tce_iommu_bus_notifier,
-};
-
-static int __init tce_iommu_bus_notifier_init(void)
-{
-	bus_register_notifier(&pci_bus_type, &tce_iommu_bus_nb);
-	return 0;
-}
-machine_subsys_initcall_sync(pseries, tce_iommu_bus_notifier_init);
 
 #ifdef CONFIG_SPAPR_TCE_IOMMU
 struct iommu_group *pSeries_pci_device_group(struct pci_controller *hose,