m68k updates for v5.10

- Conversion of the Mac IDE driver to a platform driver,
   - Minor cleanups and fixes.
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Merge tag 'm68k-for-v5.10-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:

  - Conversion of the Mac IDE driver to a platform driver

  - Minor cleanups and fixes

* tag 'm68k-for-v5.10-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  ide/macide: Convert Mac IDE driver to platform driver
  m68k: Replace HTTP links with HTTPS ones
  m68k: mm: Remove superfluous memblock_alloc*() casts
  m68k: mm: Use PAGE_ALIGNED() helper
  m68k: Sort selects in main Kconfig
  m68k: amiga: Clean up Amiga hardware configuration
  m68k: Revive _TIF_* masks
  m68k: Correct some typos in comments
  m68k: Use get_kernel_nofault() in show_registers()
  zorro: Fix address space collision message with RAM expansion boards
  m68k: amiga: Fix Denise detection on OCS

arch/m68k/Kconfig

@@ -6,32 +6,32 @@ config M68K
 	select ARCH_HAS_BINFMT_FLAT
 	select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
+	select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
 	select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
 	select ARCH_NO_PREEMPT if !COLDFIRE
+	select ARCH_WANT_IPC_PARSE_VERSION
 	select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
 	select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
-	select HAVE_IDE
+	select GENERIC_ATOMIC64
+	select GENERIC_CPU_DEVICES
+	select GENERIC_IOMAP
+	select GENERIC_IRQ_SHOW
+	select GENERIC_STRNCPY_FROM_USER if MMU
+	select GENERIC_STRNLEN_USER if MMU
 	select HAVE_AOUT if MMU
 	select HAVE_ASM_MODVERSIONS
 	select HAVE_DEBUG_BUGVERBOSE
-	select GENERIC_IRQ_SHOW
-	select GENERIC_ATOMIC64
-	select NO_DMA if !MMU && !COLDFIRE
-	select HAVE_UID16
-	select VIRT_TO_BUS
-	select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
-	select GENERIC_CPU_DEVICES
-	select GENERIC_IOMAP
-	select GENERIC_STRNCPY_FROM_USER if MMU
-	select GENERIC_STRNLEN_USER if MMU
-	select ARCH_WANT_IPC_PARSE_VERSION
 	select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
+	select HAVE_IDE
 	select HAVE_MOD_ARCH_SPECIFIC
+	select HAVE_UID16
+	select MMU_GATHER_NO_RANGE if MMU
 	select MODULES_USE_ELF_REL
 	select MODULES_USE_ELF_RELA
-	select OLD_SIGSUSPEND3
+	select NO_DMA if !MMU && !COLDFIRE
 	select OLD_SIGACTION
-	select MMU_GATHER_NO_RANGE if MMU
+	select OLD_SIGSUSPEND3
+	select VIRT_TO_BUS
 
 config CPU_BIG_ENDIAN
 	def_bool y

arch/m68k/amiga/config.c

@@ -214,7 +214,7 @@ static void __init amiga_identify(void)
 
 	switch (amiga_model) {
 	case AMI_UNKNOWN:
-		goto Generic;
+		break;
 
 	case AMI_600:
 	case AMI_1200:
@@ -227,7 +227,7 @@ static void __init amiga_identify(void)
 	case AMI_2000:
 	case AMI_2500:
 		AMIGAHW_SET(A2000_CLK);	/* Is this correct for all models? */
-		goto Generic;
+		break;
 
 	case AMI_3000:
 	case AMI_3000T:
@@ -238,7 +238,7 @@ static void __init amiga_identify(void)
 		AMIGAHW_SET(A3000_SCSI);
 		AMIGAHW_SET(A3000_CLK);
 		AMIGAHW_SET(ZORRO3);
-		goto Generic;
+		break;
 
 	case AMI_4000T:
 		AMIGAHW_SET(A4000_SCSI);
@@ -247,68 +247,12 @@ static void __init amiga_identify(void)
 		AMIGAHW_SET(A4000_IDE);
 		AMIGAHW_SET(A3000_CLK);
 		AMIGAHW_SET(ZORRO3);
-		goto Generic;
+		break;
 
 	case AMI_CDTV:
 	case AMI_CD32:
 		AMIGAHW_SET(CD_ROM);
 		AMIGAHW_SET(A2000_CLK);             /* Is this correct? */
-		goto Generic;
-
-	Generic:
-		AMIGAHW_SET(AMI_VIDEO);
-		AMIGAHW_SET(AMI_BLITTER);
-		AMIGAHW_SET(AMI_AUDIO);
-		AMIGAHW_SET(AMI_FLOPPY);
-		AMIGAHW_SET(AMI_KEYBOARD);
-		AMIGAHW_SET(AMI_MOUSE);
-		AMIGAHW_SET(AMI_SERIAL);
-		AMIGAHW_SET(AMI_PARALLEL);
-		AMIGAHW_SET(CHIP_RAM);
-		AMIGAHW_SET(PAULA);
-
-		switch (amiga_chipset) {
-		case CS_OCS:
-		case CS_ECS:
-		case CS_AGA:
-			switch (amiga_custom.deniseid & 0xf) {
-			case 0x0c:
-				AMIGAHW_SET(DENISE_HR);
-				break;
-			case 0x08:
-				AMIGAHW_SET(LISA);
-				break;
-			}
-			break;
-		default:
-			AMIGAHW_SET(DENISE);
-			break;
-		}
-		switch ((amiga_custom.vposr>>8) & 0x7f) {
-		case 0x00:
-			AMIGAHW_SET(AGNUS_PAL);
-			break;
-		case 0x10:
-			AMIGAHW_SET(AGNUS_NTSC);
-			break;
-		case 0x20:
-		case 0x21:
-			AMIGAHW_SET(AGNUS_HR_PAL);
-			break;
-		case 0x30:
-		case 0x31:
-			AMIGAHW_SET(AGNUS_HR_NTSC);
-			break;
-		case 0x22:
-		case 0x23:
-			AMIGAHW_SET(ALICE_PAL);
-			break;
-		case 0x32:
-		case 0x33:
-			AMIGAHW_SET(ALICE_NTSC);
-			break;
-		}
-		AMIGAHW_SET(ZORRO);
 		break;
 
 	case AMI_DRACO:
@@ -318,6 +262,60 @@ static void __init amiga_identify(void)
 		panic("Unknown Amiga Model");
 	}
 
+	AMIGAHW_SET(AMI_VIDEO);
+	AMIGAHW_SET(AMI_BLITTER);
+	AMIGAHW_SET(AMI_AUDIO);
+	AMIGAHW_SET(AMI_FLOPPY);
+	AMIGAHW_SET(AMI_KEYBOARD);
+	AMIGAHW_SET(AMI_MOUSE);
+	AMIGAHW_SET(AMI_SERIAL);
+	AMIGAHW_SET(AMI_PARALLEL);
+	AMIGAHW_SET(CHIP_RAM);
+	AMIGAHW_SET(PAULA);
+
+	switch (amiga_chipset) {
+	case CS_OCS:
+	case CS_ECS:
+	case CS_AGA:
+		switch (amiga_custom.deniseid & 0xf) {
+		case 0x0c:
+			AMIGAHW_SET(DENISE_HR);
+			break;
+		case 0x08:
+			AMIGAHW_SET(LISA);
+			break;
+		default:
+			AMIGAHW_SET(DENISE);
+			break;
+		}
+		break;
+	}
+	switch ((amiga_custom.vposr>>8) & 0x7f) {
+	case 0x00:
+		AMIGAHW_SET(AGNUS_PAL);
+		break;
+	case 0x10:
+		AMIGAHW_SET(AGNUS_NTSC);
+		break;
+	case 0x20:
+	case 0x21:
+		AMIGAHW_SET(AGNUS_HR_PAL);
+		break;
+	case 0x30:
+	case 0x31:
+		AMIGAHW_SET(AGNUS_HR_NTSC);
+		break;
+	case 0x22:
+	case 0x23:
+		AMIGAHW_SET(ALICE_PAL);
+		break;
+	case 0x32:
+	case 0x33:
+		AMIGAHW_SET(ALICE_NTSC);
+		break;
+	}
+	AMIGAHW_SET(ZORRO);
+
 #define AMIGAHW_ANNOUNCE(name, str)		\
 	if (AMIGAHW_PRESENT(name))		\
 		pr_cont(str)

arch/m68k/configs/mac_defconfig

@@ -317,6 +317,7 @@ CONFIG_DUMMY_IRQ=m
 CONFIG_IDE=y
 CONFIG_IDE_GD_ATAPI=y
 CONFIG_BLK_DEV_IDECD=y
+CONFIG_BLK_DEV_PLATFORM=y
 CONFIG_BLK_DEV_MAC_IDE=y
 CONFIG_RAID_ATTRS=m
 CONFIG_SCSI=y

arch/m68k/configs/multi_defconfig

@@ -346,6 +346,7 @@ CONFIG_DUMMY_IRQ=m
 CONFIG_IDE=y
 CONFIG_IDE_GD_ATAPI=y
 CONFIG_BLK_DEV_IDECD=y
+CONFIG_BLK_DEV_PLATFORM=y
 CONFIG_BLK_DEV_GAYLE=y
 CONFIG_BLK_DEV_BUDDHA=y
 CONFIG_BLK_DEV_FALCON_IDE=y

arch/m68k/include/asm/thread_info.h

@@ -68,4 +68,12 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_MEMDIE		16	/* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK	18	/* restore signal mask in do_signal */
 
+#define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
+#define _TIF_DELAYED_TRACE	(1 << TIF_DELAYED_TRACE)
+#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
+#define _TIF_MEMDIE		(1 << TIF_MEMDIE)
+#define _TIF_RESTORE_SIGMASK	(1 << TIF_RESTORE_SIGMASK)
+
 #endif	/* _ASM_M68K_THREAD_INFO_H */

arch/m68k/kernel/head.S

@@ -57,7 +57,7 @@
  * Of course, readability is a subjective issue, so it will never be
  * argued that that goal was accomplished.  It was merely a goal.
  * A key way to help make code more readable is to give good
- * documentation.  So, the first thing you will find is exaustive
+ * documentation.  So, the first thing you will find is exhaustive
  * write-ups on the structure of the file, and the features of the
  * functional subroutines.
  *
@@ -1304,7 +1304,7 @@ L(mmu_fixup_done):
  * mmu_engage
  *
  * This chunk of code performs the gruesome task of engaging the MMU.
- * The reason its gruesome is because when the MMU becomes engaged it
+ * The reason it's gruesome is because when the MMU becomes engaged it
  * maps logical addresses to physical addresses.  The Program Counter
  * register is then passed through the MMU before the next instruction
  * is fetched (the instruction following the engage MMU instruction).
@@ -1369,7 +1369,7 @@ L(mmu_fixup_done):
 /*
  * After this point no new memory is allocated and
  * the start of available memory is stored in availmem.
- * (The bootmem allocator requires now the physicall address.)
+ * (The bootmem allocator requires now the physical address.)
  */
 
 	movel	L(memory_start),availmem
@@ -1547,7 +1547,7 @@ func_return	get_bi_record
  *	seven bits of the logical address (LA) are used as an
  *	index into the "root table."  Each entry in the root
  *	table has a bit which specifies if it's a valid pointer to a
- *	pointer table.  Each entry defines a 32KMeg range of memory.
+ *	pointer table.  Each entry defines a 32Meg range of memory.
  *	If an entry is invalid then that logical range of 32M is
  *	invalid and references to that range of memory (when the MMU
  *	is enabled) will fault.  If the entry is valid, then it does
@@ -1584,7 +1584,7 @@ func_return	get_bi_record
  *		bits 17..12 - index into the Page Table
  *		bits 11..0  - offset into a particular 4K page
  *
- *	The algorithms which follows do one thing: they abstract
+ *	The algorithms which follow do one thing: they abstract
  *	the MMU hardware.  For example, there are three kinds of
  *	cache settings that are relevant.  Either, memory is
  *	being mapped in which case it is either Kernel Code (or
@@ -2082,7 +2082,7 @@ func_return	mmu_map_tt
  *	mmu_map
  *
  *	This routine will map a range of memory using a pointer
- *	table and allocating the pages on the fly from the kernel.
+ *	table and allocate the pages on the fly from the kernel.
  *	The pointer table does not have to be already linked into
  *	the root table, this routine will do that if necessary.
  *
@@ -2528,7 +2528,7 @@ func_start	mmu_get_root_table_entry,%d0/%a1
 
 	/* Find the start of free memory, get_bi_record does this for us,
 	 * as the bootinfo structure is located directly behind the kernel
-	 * and and we simply search for the last entry.
+	 * we simply search for the last entry.
 	 */
 	get_bi_record	BI_LAST
 	addw	#PAGESIZE-1,%a0
@@ -2654,7 +2654,7 @@ func_start	mmu_get_page_table_entry,%d0/%a1
 	jne	2f
 
 	/* If the page table entry doesn't exist, we allocate a complete new
-	 * page and use it as one continues big page table which can cover
+	 * page and use it as one continuous big page table which can cover
 	 * 4MB of memory, nearly almost all mappings have that alignment.
 	 */
 	get_new_page

arch/m68k/kernel/traps.c

@@ -845,7 +845,6 @@ static void show_trace(unsigned long *stack, const char *loglvl)
 void show_registers(struct pt_regs *regs)
 {
 	struct frame *fp = (struct frame *)regs;
-	mm_segment_t old_fs = get_fs();
 	u16 c, *cp;
 	unsigned long addr;
 	int i;
@@ -918,10 +917,9 @@ void show_registers(struct pt_regs *regs)
 	show_stack(NULL, (unsigned long *)addr, KERN_INFO);
 
 	pr_info("Code:");
-	set_fs(KERNEL_DS);
 	cp = (u16 *)regs->pc;
 	for (i = -8; i < 16; i++) {
-		if (get_user(c, cp + i) && i >= 0) {
+		if (get_kernel_nofault(c, cp + i) && i >= 0) {
 			pr_cont(" Bad PC value.");
 			break;
 		}
@@ -930,7 +928,6 @@ void show_registers(struct pt_regs *regs)
 		else
 			pr_cont(" <%04x>", c);
 	}
-	set_fs(old_fs);
 	pr_cont("\n");
 }
 

arch/m68k/mac/config.c

@@ -24,6 +24,7 @@
 #include <linux/init.h>
 #include <linux/vt_kern.h>
 #include <linux/platform_device.h>
+#include <linux/ata_platform.h>
 #include <linux/adb.h>
 #include <linux/cuda.h>
 #include <linux/pmu.h>
@@ -940,6 +941,26 @@ static const struct resource mac_scsi_ccl_rsrc[] __initconst = {
 	},
 };
 
+static const struct resource mac_ide_quadra_rsrc[] __initconst = {
+	DEFINE_RES_MEM(0x50F1A000, 0x104),
+	DEFINE_RES_IRQ(IRQ_NUBUS_F),
+};
+
+static const struct resource mac_ide_pb_rsrc[] __initconst = {
+	DEFINE_RES_MEM(0x50F1A000, 0x104),
+	DEFINE_RES_IRQ(IRQ_NUBUS_C),
+};
+
+static const struct resource mac_pata_baboon_rsrc[] __initconst = {
+	DEFINE_RES_MEM(0x50F1A000, 0x38),
+	DEFINE_RES_MEM(0x50F1A038, 0x04),
+	DEFINE_RES_IRQ(IRQ_BABOON_1),
+};
+
+static const struct pata_platform_info mac_pata_baboon_data __initconst = {
+	.ioport_shift = 2,
+};
+
 int __init mac_platform_init(void)
 {
 	phys_addr_t swim_base = 0;
@@ -1048,6 +1069,26 @@ int __init mac_platform_init(void)
 		break;
 	}
 
+	/*
+	 * IDE device
+	 */
+
+	switch (macintosh_config->ide_type) {
+	case MAC_IDE_QUADRA:
+		platform_device_register_simple("mac_ide", -1,
+			mac_ide_quadra_rsrc, ARRAY_SIZE(mac_ide_quadra_rsrc));
+		break;
+	case MAC_IDE_PB:
+		platform_device_register_simple("mac_ide", -1,
+			mac_ide_pb_rsrc, ARRAY_SIZE(mac_ide_pb_rsrc));
+		break;
+	case MAC_IDE_BABOON:
+		platform_device_register_resndata(NULL, "pata_platform", -1,
+			mac_pata_baboon_rsrc, ARRAY_SIZE(mac_pata_baboon_rsrc),
+			&mac_pata_baboon_data, sizeof(mac_pata_baboon_data));
+		break;
+	}
+
 	/*
 	 * Ethernet device
 	 */

arch/m68k/mac/macboing.c

@@ -116,7 +116,7 @@ static void mac_init_asc( void )
 			 *   support 16-bit stereo output, but only mono input."
 			 *
 			 *   Technical Information Library (TIL) article number 16405. 
-			 *   http://support.apple.com/kb/TA32601 
+			 *   https://support.apple.com/kb/TA32601
 			 *
 			 * --David Kilzer
 			 */

arch/m68k/mm/mcfmmu.c

@@ -42,7 +42,7 @@ void __init paging_init(void)
 	unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 };
 	int i;
 
-	empty_zero_page = (void *) memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+	empty_zero_page = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
 	if (!empty_zero_page)
 		panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
 		      __func__, PAGE_SIZE, PAGE_SIZE);

arch/m68k/mm/motorola.c

@@ -226,8 +226,8 @@ static pte_t * __init kernel_page_table(void)
 {
 	pte_t *pte_table = last_pte_table;
 
-	if (((unsigned long)last_pte_table & ~PAGE_MASK) == 0) {
+	if (PAGE_ALIGNED(last_pte_table)) {
-		pte_table = (pte_t *)memblock_alloc_low(PAGE_SIZE, PAGE_SIZE);
+		pte_table = memblock_alloc_low(PAGE_SIZE, PAGE_SIZE);
 		if (!pte_table) {
 			panic("%s: Failed to allocate %lu bytes align=%lx\n",
 					__func__, PAGE_SIZE, PAGE_SIZE);
@@ -274,9 +274,8 @@ static pmd_t * __init kernel_ptr_table(void)
 	}
 
 	last_pmd_table += PTRS_PER_PMD;
-	if (((unsigned long)last_pmd_table & ~PAGE_MASK) == 0) {
+	if (PAGE_ALIGNED(last_pmd_table)) {
-		last_pmd_table = (pmd_t *)memblock_alloc_low(PAGE_SIZE,
+		last_pmd_table = memblock_alloc_low(PAGE_SIZE, PAGE_SIZE);
-							   PAGE_SIZE);
 		if (!last_pmd_table)
 			panic("%s: Failed to allocate %lu bytes align=%lx\n",
 			      __func__, PAGE_SIZE, PAGE_SIZE);

drivers/ide/Kconfig

@@ -744,9 +744,10 @@ config BLK_DEV_MAC_IDE
 	depends on MAC
 	help
 	  This is the IDE driver for the on-board IDE interface on some m68k
-	  Macintosh models. It supports both the `Quadra style' (used in
+	  Macintosh models, namely Quadra/Centris 630, Performa 588 and
-	  Quadra/ Centris 630 and Performa 588 models) and `Powerbook style'
+	  Powerbook 150. The IDE interface on the Powerbook 190 is not
-	  (used in the Powerbook 150 and 190 models) IDE interface.
+	  supported by this driver and requires BLK_DEV_PLATFORM or
+	  PATA_PLATFORM.
 
 	  Say Y if you have such an Macintosh model and want to use IDE
 	  devices (hard disks, CD-ROM drives, etc.) that are connected to the

drivers/ide/macide.c

@@ -18,10 +18,11 @@
 #include <linux/delay.h>
 #include <linux/ide.h>
 #include <linux/module.h>
+#include <linux/platform_device.h>
 
 #include <asm/macintosh.h>
-#include <asm/macints.h>
+
-#include <asm/mac_baboon.h>
+#define DRV_NAME "mac_ide"
 
 #define IDE_BASE 0x50F1A000	/* Base address of IDE controller */
 
@@ -100,42 +101,61 @@ static const char *mac_ide_name[] =
  * Probe for a Macintosh IDE interface
  */
 
-static int __init macide_init(void)
+static int mac_ide_probe(struct platform_device *pdev)
 {
-	unsigned long base;
+	struct resource *mem, *irq;
-	int irq;
 	struct ide_hw hw, *hws[] = { &hw };
 	struct ide_port_info d = macide_port_info;
+	struct ide_host *host;
+	int rc;
 
 	if (!MACH_IS_MAC)
 		return -ENODEV;
 
-	switch (macintosh_config->ide_type) {
+	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	case MAC_IDE_QUADRA:
+	if (!mem)
-		base = IDE_BASE;
-		irq = IRQ_NUBUS_F;
-		break;
-	case MAC_IDE_PB:
-		base = IDE_BASE;
-		irq = IRQ_NUBUS_C;
-		break;
-	case MAC_IDE_BABOON:
-		base = BABOON_BASE;
-		d.port_ops = NULL;
-		irq = IRQ_BABOON_1;
-		break;
-	default:
 		return -ENODEV;
+
+	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!irq)
+		return -ENODEV;
+
+	if (!devm_request_mem_region(&pdev->dev, mem->start,
+				     resource_size(mem), DRV_NAME)) {
+		dev_err(&pdev->dev, "resources busy\n");
+		return -EBUSY;
 	}
 
 	printk(KERN_INFO "ide: Macintosh %s IDE controller\n",
 			 mac_ide_name[macintosh_config->ide_type - 1]);
 
-	macide_setup_ports(&hw, base, irq);
+	macide_setup_ports(&hw, mem->start, irq->start);
 
-	return ide_host_add(&d, hws, 1, NULL);
+	rc = ide_host_add(&d, hws, 1, &host);
+	if (rc)
+		return rc;
+
+	platform_set_drvdata(pdev, host);
+	return 0;
 }
 
-module_init(macide_init);
+static int mac_ide_remove(struct platform_device *pdev)
+{
+	struct ide_host *host = platform_get_drvdata(pdev);
 
+	ide_host_remove(host);
+	return 0;
+}
+
+static struct platform_driver mac_ide_driver = {
+	.driver = {
+		.name = DRV_NAME,
+	},
+	.probe  = mac_ide_probe,
+	.remove = mac_ide_remove,
+};
+
+module_platform_driver(mac_ide_driver);
+
+MODULE_ALIAS("platform:" DRV_NAME);
 MODULE_LICENSE("GPL");

drivers/zorro/zorro.c

@@ -181,7 +181,7 @@ static int __init amiga_zorro_probe(struct platform_device *pdev)
 		z->resource.name = z->name;
 		r = zorro_find_parent_resource(pdev, z);
 		error = request_resource(r, &z->resource);
-		if (error)
+		if (error && !(z->rom.er_Type & ERTF_MEMLIST))
 			dev_err(&bus->dev,
 				"Address space collision on device %s %pR\n",
 				z->name, &z->resource);