Merge branch 'parisc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc updates from Helge Deller:
 "Lots of small fixes and enhancements, most noteably:

   - Many TLB and cache flush optimizations (Dave)

   - Fixed HPMC/crash handler on 64-bit kernel (Dave and myself)

   - Added alternative infrastructre. The kernel now live-patches itself
     for various situations, e.g. replace SMP code when running on one
     CPU only or drop cache flushes when system has no cache installed.

   - vmlinuz now contains a full copy of the compressed vmlinux file.
     This simplifies debugging the currently booted kernel.

   - Unused driver removal (Christoph)

   - Reduced warnings of Dino PCI bridge when running in qemu

   - Removed gcc version check (Masahiro)"

* 'parisc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (23 commits)
  parisc: Retrieve and display the PDC PAT capabilities
  parisc: Optimze cache flush algorithms
  parisc: Remove pte_inserted define
  parisc: Add PDC PAT cell_info() and pd_get_pdc_revisions() functions
  parisc: Drop two instructions from pte lookup code
  parisc: Use zdep for shlw macro on PA1.1 and PA2.0
  parisc: Add alternative coding infrastructure
  parisc: Include compressed vmlinux file in vmlinuz boot kernel
  extract-vmlinux: Check for uncompressed image as fallback
  parisc: Fix address in HPMC IVA
  parisc: Fix exported address of os_hpmc handler
  parisc: Fix map_pages() to not overwrite existing pte entries
  parisc: Purge TLB entries after updating page table entry and set page accessed flag in TLB handler
  parisc: Release spinlocks using ordered store
  parisc: Ratelimit dino stuck interrupt warnings
  parisc: dino: Utilize DINO_MASK_IRQ() macro
  parisc: Clean up crash header output
  parisc: Add SYSTEM_INFO and REGISTER TOC PAT functions
  parisc: Remove PTE load and fault check from L2_ptep macro
  parisc: Reorder TLB flush timing calculation
  ...

5 files changed, 12 insertions, 227 deletions

diff --git a/drivers/parisc/Makefile b/drivers/parisc/Makefile
index 3cd5e6cb8478..99fa6a89e0b9 100644
--- a/drivers/parisc/Makefile
+++ b/drivers/parisc/Makefile
@@ -8,9 +8,6 @@
 obj-$(CONFIG_IOSAPIC)		+= iosapic.o
 obj-$(CONFIG_IOMMU_SBA)		+= sba_iommu.o
 obj-$(CONFIG_PCI_LBA)		+= lba_pci.o
-
-# Only use one of them: ccio-rm-dma is for PCX-W systems *only*
-# obj-$(CONFIG_IOMMU_CCIO)	+= ccio-rm-dma.o
 obj-$(CONFIG_IOMMU_CCIO)	+= ccio-dma.o
 
 obj-$(CONFIG_GSC)		+= gsc.o
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index 614823617b8b..701a7d6a74d5 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -609,14 +609,13 @@ ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
 	**        PCX-T'? Don't know. (eg C110 or similar K-class)
 	**
 	** See PDC_MODEL/option 0/SW_CAP word for "Non-coherent IO-PDIR bit".
-	** Hopefully we can patch (NOP) these out at boot time somehow.
 	**
 	** "Since PCX-U employs an offset hash that is incompatible with
 	** the real mode coherence index generation of U2, the PDIR entry
 	** must be flushed to memory to retain coherence."
 	*/
-	asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr));
-	asm volatile("sync");
+	asm_io_fdc(pdir_ptr);
+	asm_io_sync();
 }
 
 /**
@@ -682,17 +681,14 @@ ccio_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt)
 		** FIXME: PCX_W platforms don't need FDC/SYNC. (eg C360)
 		**   PCX-U/U+ do. (eg C200/C240)
 		** See PDC_MODEL/option 0/SW_CAP for "Non-coherent IO-PDIR bit".
-		**
-		** Hopefully someone figures out how to patch (NOP) the
-		** FDC/SYNC out at boot time.
 		*/
-		asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr[7]));
+		asm_io_fdc(pdir_ptr);
 
 		iovp     += IOVP_SIZE;
 		byte_cnt -= IOVP_SIZE;
 	}
 
-	asm volatile("sync");
+	asm_io_sync();
 	ccio_clear_io_tlb(ioc, CCIO_IOVP(iova), saved_byte_cnt);
 }
 
diff --git a/drivers/parisc/ccio-rm-dma.c b/drivers/parisc/ccio-rm-dma.c
deleted file mode 100644
index df7932af48b7..000000000000
--- a/drivers/parisc/ccio-rm-dma.c
+++ /dev/null
@@ -1,202 +0,0 @@
-/*
- * ccio-rm-dma.c:
- *	DMA management routines for first generation cache-coherent machines.
- *	"Real Mode" operation refers to U2/Uturn chip operation. The chip
- *      can perform coherency checks w/o using the I/O MMU. That's all we
- *      need until support for more than 4GB phys mem is needed.
- * 
- *	This is the trivial case - basically what x86 does.
- *
- *	Drawbacks of using Real Mode are:
- *	o outbound DMA is slower since one isn't using the prefetching
- *	  U2 can do for outbound DMA.
- *	o Ability to do scatter/gather in HW is also lost.
- *      o only known to work with PCX-W processor. (eg C360)
- *        (PCX-U/U+ are not coherent with U2 in real mode.)
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- *
- * Original version/author:
- *      CVSROOT=:pserver:anonymous@198.186.203.37:/cvsroot/linux-parisc
- *      cvs -z3 co linux/arch/parisc/kernel/dma-rm.c
- *
- *	(C) Copyright 2000 Philipp Rumpf <prumpf@tux.org>
- *
- *
- * Adopted for The Puffin Group's parisc-linux port by Grant Grundler.
- *	(C) Copyright 2000 Grant Grundler <grundler@puffin.external.hp.com>
- *	
- */
-
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/pci.h>
-#include <linux/gfp.h>
-
-#include <linux/uaccess.h>
-
-#include <asm/io.h>
-#include <asm/hardware.h>
-#include <asm/page.h>
-
-/* Only chose "ccio" since that's what HP-UX calls it....
-** Make it easier for folks to migrate from one to the other :^)
-*/
-#define MODULE_NAME "ccio"
-
-#define U2_IOA_RUNWAY 0x580
-#define U2_BC_GSC     0x501
-#define UTURN_IOA_RUNWAY 0x581
-#define UTURN_BC_GSC     0x502
-
-#define IS_U2(id) ( \
-    (((id)->hw_type == HPHW_IOA) && ((id)->hversion == U2_IOA_RUNWAY)) || \
-    (((id)->hw_type == HPHW_BCPORT) && ((id)->hversion == U2_BC_GSC))  \
-)
-
-#define IS_UTURN(id) ( \
-    (((id)->hw_type == HPHW_IOA) && ((id)->hversion == UTURN_IOA_RUNWAY)) || \
-    (((id)->hw_type == HPHW_BCPORT) && ((id)->hversion == UTURN_BC_GSC))  \
-)
-
-static int ccio_dma_supported( struct pci_dev *dev, u64 mask)
-{
-	if (dev == NULL) {
-		printk(KERN_ERR MODULE_NAME ": EISA/ISA/et al not supported\n");
-		BUG();
-		return(0);
-	}
-
-	/* only support 32-bit devices (ie PCI/GSC) */
-	return((int) (mask >= 0xffffffffUL));
-}
-
-
-static void *ccio_alloc_consistent(struct pci_dev *dev, size_t size,
-				 dma_addr_t *handle)
-{
-	void *ret;
-	
-	ret = (void *)__get_free_pages(GFP_ATOMIC, get_order(size));
-
-	if (ret != NULL) {
-		memset(ret, 0, size);
-		*handle = virt_to_phys(ret);
-	}
-	return ret;
-}
-	
-static void ccio_free_consistent(struct pci_dev *dev, size_t size,
-			       void *vaddr, dma_addr_t handle)
-{
-	free_pages((unsigned long)vaddr, get_order(size));
-}
-
-static dma_addr_t ccio_map_single(struct pci_dev *dev, void *ptr, size_t size,
-			  int direction)
-{
-	return virt_to_phys(ptr);
-}
-
-static void ccio_unmap_single(struct pci_dev *dev, dma_addr_t dma_addr,
-			    size_t size, int direction)
-{
-	/* Nothing to do */
-}
-
-
-static int ccio_map_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents, int direction)
-{
-	int tmp = nents;
-
-        /* KISS: map each buffer separately. */
-	while (nents) {
-		sg_dma_address(sglist) = ccio_map_single(dev, sglist->address, sglist->length, direction);
-		sg_dma_len(sglist) = sglist->length;
-		nents--;
-		sglist++;
-	}
-
-	return tmp;
-}
-
-
-static void ccio_unmap_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents, int direction)
-{
-#if 0
-	while (nents) {
-		ccio_unmap_single(dev, sg_dma_address(sglist), sg_dma_len(sglist), direction);
-		nents--;
-		sglist++;
-	}
-	return;
-#else
-	/* Do nothing (copied from current ccio_unmap_single()  :^) */
-#endif
-}
-
-
-static struct pci_dma_ops ccio_ops = {
-	ccio_dma_supported,
-	ccio_alloc_consistent,
-	ccio_free_consistent,
-	ccio_map_single,
-	ccio_unmap_single,
-	ccio_map_sg,
-	ccio_unmap_sg,
-	NULL,                   /* dma_sync_single_for_cpu : NOP for U2 */
-	NULL,                   /* dma_sync_single_for_device : NOP for U2 */
-	NULL,                   /* dma_sync_sg_for_cpu     : ditto */
-	NULL,                   /* dma_sync_sg_for_device     : ditto */
-};
-
-
-/*
-** Determine if u2 should claim this chip (return 0) or not (return 1).
-** If so, initialize the chip and tell other partners in crime they
-** have work to do.
-*/
-static int __init
-ccio_probe(struct parisc_device *dev)
-{
-	printk(KERN_INFO "%s found %s at 0x%lx\n", MODULE_NAME,
-			dev->id.hversion == U2_BC_GSC ? "U2" : "UTurn",
-			dev->hpa.start);
-
-/*
-** FIXME - should check U2 registers to verify it's really running
-** in "Real Mode".
-*/
-
-#if 0
-/* will need this for "Virtual Mode" operation */
-	ccio_hw_init(ccio_dev);
-	ccio_common_init(ccio_dev);
-#endif
-	hppa_dma_ops = &ccio_ops;
-	return 0;
-}
-
-static const struct parisc_device_id ccio_tbl[] __initconst = {
-	{ HPHW_BCPORT, HVERSION_REV_ANY_ID, U2_BC_GSC, 0xc },
-	{ HPHW_BCPORT, HVERSION_REV_ANY_ID, UTURN_BC_GSC, 0xc },
-	{ 0, }
-};
-
-static struct parisc_driver ccio_driver __refdata = {
-	.name =		"U2/Uturn",
-	.id_table =	ccio_tbl,
-	.probe =	ccio_probe,
-};
-
-void __init ccio_init(void)
-{
-	register_parisc_driver(&ccio_driver);
-}
diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
index 7390fb8ca9d1..dfeea458a789 100644
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -382,7 +382,7 @@ ilr_again:
 		DBG(KERN_DEBUG "%s(%d, %p) mask 0x%x\n",
 			__func__, irq, intr_dev, mask);
 		generic_handle_irq(irq);
-		mask &= ~(1 << local_irq);
+		mask &= ~DINO_MASK_IRQ(local_irq);
 	} while (mask);
 
 	/* Support for level triggered IRQ lines.
@@ -396,9 +396,8 @@ ilr_again:
 	if (mask) {
 		if (--ilr_loop > 0)
 			goto ilr_again;
-		printk(KERN_ERR "Dino 0x%px: stuck interrupt %d\n",
+		pr_warn_ratelimited("Dino 0x%px: stuck interrupt %d\n",
 		       dino_dev->hba.base_addr, mask);
-		return IRQ_NONE;
 	}
 	return IRQ_HANDLED;
 }
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index 11de0eccf968..c1e599a429af 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -587,8 +587,7 @@ sba_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
 	 * (bit #61, big endian), we have to flush and sync every time
 	 * IO-PDIR is changed in Ike/Astro.
 	 */
-	if (ioc_needs_fdc)
-		asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr));
+	asm_io_fdc(pdir_ptr);
 }
 
 
@@ -641,8 +640,8 @@ sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt)
 		do {
 			/* clear I/O Pdir entry "valid" bit first */
 			((u8 *) pdir_ptr)[7] = 0;
+			asm_io_fdc(pdir_ptr);
 			if (ioc_needs_fdc) {
-				asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr));
 #if 0
 				entries_per_cacheline = L1_CACHE_SHIFT - 3;
 #endif
@@ -661,8 +660,7 @@ sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt)
 	** could dump core on HPMC.
 	*/
 	((u8 *) pdir_ptr)[7] = 0;
-	if (ioc_needs_fdc)
-		asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr));
+	asm_io_fdc(pdir_ptr);
 
 	WRITE_REG( SBA_IOVA(ioc, iovp, 0, 0), ioc->ioc_hpa+IOC_PCOM);
 }
@@ -773,8 +771,7 @@ sba_map_single(struct device *dev, void *addr, size_t size,
 	}
 
 	/* force FDC ops in io_pdir_entry() to be visible to IOMMU */
-	if (ioc_needs_fdc)
-		asm volatile("sync" : : );
+	asm_io_sync();
 
 #ifdef ASSERT_PDIR_SANITY
 	sba_check_pdir(ioc,"Check after sba_map_single()");
@@ -858,8 +855,7 @@ sba_unmap_page(struct device *dev, dma_addr_t iova, size_t size,
 	sba_free_range(ioc, iova, size);
 
 	/* If fdc's were issued, force fdc's to be visible now */
-	if (ioc_needs_fdc)
-		asm volatile("sync" : : );
+	asm_io_sync();
 
 	READ_REG(ioc->ioc_hpa+IOC_PCOM);	/* flush purges */
 #endif /* DELAYED_RESOURCE_CNT == 0 */
@@ -1008,8 +1004,7 @@ sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
 	filled = iommu_fill_pdir(ioc, sglist, nents, 0, sba_io_pdir_entry);
 
 	/* force FDC ops in io_pdir_entry() to be visible to IOMMU */
-	if (ioc_needs_fdc)
-		asm volatile("sync" : : );
+	asm_io_sync();
 
 #ifdef ASSERT_PDIR_SANITY
 	if (sba_check_pdir(ioc,"Check after sba_map_sg()"))