Merging upstream version 6.7.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 550 deletions

diff --git a/drivers/char/agp/hp-agp.c b/drivers/char/agp/hp-agp.c
deleted file mode 100644
index 84d9adbb62..0000000000
--- a/drivers/char/agp/hp-agp.c
+++ /dev/null
@@ -1,550 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * HP zx1 AGPGART routines.
- *
- * (c) Copyright 2002, 2003 Hewlett-Packard Development Company, L.P.
- *	Bjorn Helgaas <bjorn.helgaas@hp.com>
- */
-
-#include <linux/acpi.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/agp_backend.h>
-#include <linux/log2.h>
-#include <linux/slab.h>
-
-#include <asm/acpi-ext.h>
-
-#include "agp.h"
-
-#define HP_ZX1_IOC_OFFSET	0x1000  /* ACPI reports SBA, we want IOC */
-
-/* HP ZX1 IOC registers */
-#define HP_ZX1_IBASE		0x300
-#define HP_ZX1_IMASK		0x308
-#define HP_ZX1_PCOM		0x310
-#define HP_ZX1_TCNFG		0x318
-#define HP_ZX1_PDIR_BASE	0x320
-
-#define HP_ZX1_IOVA_BASE	GB(1UL)
-#define HP_ZX1_IOVA_SIZE	GB(1UL)
-#define HP_ZX1_GART_SIZE	(HP_ZX1_IOVA_SIZE / 2)
-#define HP_ZX1_SBA_IOMMU_COOKIE	0x0000badbadc0ffeeUL
-
-#define HP_ZX1_PDIR_VALID_BIT	0x8000000000000000UL
-#define HP_ZX1_IOVA_TO_PDIR(va)	((va - hp_private.iova_base) >> hp_private.io_tlb_shift)
-
-#define AGP8X_MODE_BIT		3
-#define AGP8X_MODE		(1 << AGP8X_MODE_BIT)
-
-/* AGP bridge need not be PCI device, but DRM thinks it is. */
-static struct pci_dev fake_bridge_dev;
-
-static int hp_zx1_gart_found;
-
-static struct aper_size_info_fixed hp_zx1_sizes[] =
-{
-	{0, 0, 0},		/* filled in by hp_zx1_fetch_size() */
-};
-
-static struct gatt_mask hp_zx1_masks[] =
-{
-	{.mask = HP_ZX1_PDIR_VALID_BIT, .type = 0}
-};
-
-static struct _hp_private {
-	volatile u8 __iomem *ioc_regs;
-	volatile u8 __iomem *lba_regs;
-	int lba_cap_offset;
-	u64 *io_pdir;		// PDIR for entire IOVA
-	u64 *gatt;		// PDIR just for GART (subset of above)
-	u64 gatt_entries;
-	u64 iova_base;
-	u64 gart_base;
-	u64 gart_size;
-	u64 io_pdir_size;
-	int io_pdir_owner;	// do we own it, or share it with sba_iommu?
-	int io_page_size;
-	int io_tlb_shift;
-	int io_tlb_ps;		// IOC ps config
-	int io_pages_per_kpage;
-} hp_private;
-
-static int __init hp_zx1_ioc_shared(void)
-{
-	struct _hp_private *hp = &hp_private;
-
-	printk(KERN_INFO PFX "HP ZX1 IOC: IOPDIR shared with sba_iommu\n");
-
-	/*
-	 * IOC already configured by sba_iommu module; just use
-	 * its setup.  We assume:
-	 *	- IOVA space is 1Gb in size
-	 *	- first 512Mb is IOMMU, second 512Mb is GART
-	 */
-	hp->io_tlb_ps = readq(hp->ioc_regs+HP_ZX1_TCNFG);
-	switch (hp->io_tlb_ps) {
-		case 0: hp->io_tlb_shift = 12; break;
-		case 1: hp->io_tlb_shift = 13; break;
-		case 2: hp->io_tlb_shift = 14; break;
-		case 3: hp->io_tlb_shift = 16; break;
-		default:
-			printk(KERN_ERR PFX "Invalid IOTLB page size "
-			       "configuration 0x%x\n", hp->io_tlb_ps);
-			hp->gatt = NULL;
-			hp->gatt_entries = 0;
-			return -ENODEV;
-	}
-	hp->io_page_size = 1 << hp->io_tlb_shift;
-	hp->io_pages_per_kpage = PAGE_SIZE / hp->io_page_size;
-
-	hp->iova_base = readq(hp->ioc_regs+HP_ZX1_IBASE) & ~0x1;
-	hp->gart_base = hp->iova_base + HP_ZX1_IOVA_SIZE - HP_ZX1_GART_SIZE;
-
-	hp->gart_size = HP_ZX1_GART_SIZE;
-	hp->gatt_entries = hp->gart_size / hp->io_page_size;
-
-	hp->io_pdir = phys_to_virt(readq(hp->ioc_regs+HP_ZX1_PDIR_BASE));
-	hp->gatt = &hp->io_pdir[HP_ZX1_IOVA_TO_PDIR(hp->gart_base)];
-
-	if (hp->gatt[0] != HP_ZX1_SBA_IOMMU_COOKIE) {
-		/* Normal case when no AGP device in system */
-		hp->gatt = NULL;
-		hp->gatt_entries = 0;
-		printk(KERN_ERR PFX "No reserved IO PDIR entry found; "
-		       "GART disabled\n");
-		return -ENODEV;
-	}
-
-	return 0;
-}
-
-static int __init
-hp_zx1_ioc_owner (void)
-{
-	struct _hp_private *hp = &hp_private;
-
-	printk(KERN_INFO PFX "HP ZX1 IOC: IOPDIR dedicated to GART\n");
-
-	/*
-	 * Select an IOV page size no larger than system page size.
-	 */
-	if (PAGE_SIZE >= KB(64)) {
-		hp->io_tlb_shift = 16;
-		hp->io_tlb_ps = 3;
-	} else if (PAGE_SIZE >= KB(16)) {
-		hp->io_tlb_shift = 14;
-		hp->io_tlb_ps = 2;
-	} else if (PAGE_SIZE >= KB(8)) {
-		hp->io_tlb_shift = 13;
-		hp->io_tlb_ps = 1;
-	} else {
-		hp->io_tlb_shift = 12;
-		hp->io_tlb_ps = 0;
-	}
-	hp->io_page_size = 1 << hp->io_tlb_shift;
-	hp->io_pages_per_kpage = PAGE_SIZE / hp->io_page_size;
-
-	hp->iova_base = HP_ZX1_IOVA_BASE;
-	hp->gart_size = HP_ZX1_GART_SIZE;
-	hp->gart_base = hp->iova_base + HP_ZX1_IOVA_SIZE - hp->gart_size;
-
-	hp->gatt_entries = hp->gart_size / hp->io_page_size;
-	hp->io_pdir_size = (HP_ZX1_IOVA_SIZE / hp->io_page_size) * sizeof(u64);
-
-	return 0;
-}
-
-static int __init
-hp_zx1_ioc_init (u64 hpa)
-{
-	struct _hp_private *hp = &hp_private;
-
-	hp->ioc_regs = ioremap(hpa, 1024);
-	if (!hp->ioc_regs)
-		return -ENOMEM;
-
-	/*
-	 * If the IOTLB is currently disabled, we can take it over.
-	 * Otherwise, we have to share with sba_iommu.
-	 */
-	hp->io_pdir_owner = (readq(hp->ioc_regs+HP_ZX1_IBASE) & 0x1) == 0;
-
-	if (hp->io_pdir_owner)
-		return hp_zx1_ioc_owner();
-
-	return hp_zx1_ioc_shared();
-}
-
-static int
-hp_zx1_lba_find_capability (volatile u8 __iomem *hpa, int cap)
-{
-	u16 status;
-	u8 pos, id;
-	int ttl = 48;
-
-	status = readw(hpa+PCI_STATUS);
-	if (!(status & PCI_STATUS_CAP_LIST))
-		return 0;
-	pos = readb(hpa+PCI_CAPABILITY_LIST);
-	while (ttl-- && pos >= 0x40) {
-		pos &= ~3;
-		id = readb(hpa+pos+PCI_CAP_LIST_ID);
-		if (id == 0xff)
-			break;
-		if (id == cap)
-			return pos;
-		pos = readb(hpa+pos+PCI_CAP_LIST_NEXT);
-	}
-	return 0;
-}
-
-static int __init
-hp_zx1_lba_init (u64 hpa)
-{
-	struct _hp_private *hp = &hp_private;
-	int cap;
-
-	hp->lba_regs = ioremap(hpa, 256);
-	if (!hp->lba_regs)
-		return -ENOMEM;
-
-	hp->lba_cap_offset = hp_zx1_lba_find_capability(hp->lba_regs, PCI_CAP_ID_AGP);
-
-	cap = readl(hp->lba_regs+hp->lba_cap_offset) & 0xff;
-	if (cap != PCI_CAP_ID_AGP) {
-		printk(KERN_ERR PFX "Invalid capability ID 0x%02x at 0x%x\n",
-		       cap, hp->lba_cap_offset);
-		iounmap(hp->lba_regs);
-		return -ENODEV;
-	}
-
-	return 0;
-}
-
-static int
-hp_zx1_fetch_size(void)
-{
-	int size;
-
-	size = hp_private.gart_size / MB(1);
-	hp_zx1_sizes[0].size = size;
-	agp_bridge->current_size = (void *) &hp_zx1_sizes[0];
-	return size;
-}
-
-static int
-hp_zx1_configure (void)
-{
-	struct _hp_private *hp = &hp_private;
-
-	agp_bridge->gart_bus_addr = hp->gart_base;
-	agp_bridge->capndx = hp->lba_cap_offset;
-	agp_bridge->mode = readl(hp->lba_regs+hp->lba_cap_offset+PCI_AGP_STATUS);
-
-	if (hp->io_pdir_owner) {
-		writel(virt_to_phys(hp->io_pdir), hp->ioc_regs+HP_ZX1_PDIR_BASE);
-		readl(hp->ioc_regs+HP_ZX1_PDIR_BASE);
-		writel(hp->io_tlb_ps, hp->ioc_regs+HP_ZX1_TCNFG);
-		readl(hp->ioc_regs+HP_ZX1_TCNFG);
-		writel((unsigned int)(~(HP_ZX1_IOVA_SIZE-1)), hp->ioc_regs+HP_ZX1_IMASK);
-		readl(hp->ioc_regs+HP_ZX1_IMASK);
-		writel(hp->iova_base|1, hp->ioc_regs+HP_ZX1_IBASE);
-		readl(hp->ioc_regs+HP_ZX1_IBASE);
-		writel(hp->iova_base|ilog2(HP_ZX1_IOVA_SIZE), hp->ioc_regs+HP_ZX1_PCOM);
-		readl(hp->ioc_regs+HP_ZX1_PCOM);
-	}
-
-	return 0;
-}
-
-static void
-hp_zx1_cleanup (void)
-{
-	struct _hp_private *hp = &hp_private;
-
-	if (hp->ioc_regs) {
-		if (hp->io_pdir_owner) {
-			writeq(0, hp->ioc_regs+HP_ZX1_IBASE);
-			readq(hp->ioc_regs+HP_ZX1_IBASE);
-		}
-		iounmap(hp->ioc_regs);
-	}
-	if (hp->lba_regs)
-		iounmap(hp->lba_regs);
-}
-
-static void
-hp_zx1_tlbflush (struct agp_memory *mem)
-{
-	struct _hp_private *hp = &hp_private;
-
-	writeq(hp->gart_base | ilog2(hp->gart_size), hp->ioc_regs+HP_ZX1_PCOM);
-	readq(hp->ioc_regs+HP_ZX1_PCOM);
-}
-
-static int
-hp_zx1_create_gatt_table (struct agp_bridge_data *bridge)
-{
-	struct _hp_private *hp = &hp_private;
-	int i;
-
-	if (hp->io_pdir_owner) {
-		hp->io_pdir = (u64 *) __get_free_pages(GFP_KERNEL,
-						get_order(hp->io_pdir_size));
-		if (!hp->io_pdir) {
-			printk(KERN_ERR PFX "Couldn't allocate contiguous "
-				"memory for I/O PDIR\n");
-			hp->gatt = NULL;
-			hp->gatt_entries = 0;
-			return -ENOMEM;
-		}
-		memset(hp->io_pdir, 0, hp->io_pdir_size);
-
-		hp->gatt = &hp->io_pdir[HP_ZX1_IOVA_TO_PDIR(hp->gart_base)];
-	}
-
-	for (i = 0; i < hp->gatt_entries; i++) {
-		hp->gatt[i] = (unsigned long) agp_bridge->scratch_page;
-	}
-
-	return 0;
-}
-
-static int
-hp_zx1_free_gatt_table (struct agp_bridge_data *bridge)
-{
-	struct _hp_private *hp = &hp_private;
-
-	if (hp->io_pdir_owner)
-		free_pages((unsigned long) hp->io_pdir,
-			    get_order(hp->io_pdir_size));
-	else
-		hp->gatt[0] = HP_ZX1_SBA_IOMMU_COOKIE;
-	return 0;
-}
-
-static int
-hp_zx1_insert_memory (struct agp_memory *mem, off_t pg_start, int type)
-{
-	struct _hp_private *hp = &hp_private;
-	int i, k;
-	off_t j, io_pg_start;
-	int io_pg_count;
-
-	if (type != mem->type ||
-		agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type)) {
-		return -EINVAL;
-	}
-
-	io_pg_start = hp->io_pages_per_kpage * pg_start;
-	io_pg_count = hp->io_pages_per_kpage * mem->page_count;
-	if ((io_pg_start + io_pg_count) > hp->gatt_entries) {
-		return -EINVAL;
-	}
-
-	j = io_pg_start;
-	while (j < (io_pg_start + io_pg_count)) {
-		if (hp->gatt[j]) {
-			return -EBUSY;
-		}
-		j++;
-	}
-
-	if (!mem->is_flushed) {
-		global_cache_flush();
-		mem->is_flushed = true;
-	}
-
-	for (i = 0, j = io_pg_start; i < mem->page_count; i++) {
-		unsigned long paddr;
-
-		paddr = page_to_phys(mem->pages[i]);
-		for (k = 0;
-		     k < hp->io_pages_per_kpage;
-		     k++, j++, paddr += hp->io_page_size) {
-			hp->gatt[j] = HP_ZX1_PDIR_VALID_BIT | paddr;
-		}
-	}
-
-	agp_bridge->driver->tlb_flush(mem);
-	return 0;
-}
-
-static int
-hp_zx1_remove_memory (struct agp_memory *mem, off_t pg_start, int type)
-{
-	struct _hp_private *hp = &hp_private;
-	int i, io_pg_start, io_pg_count;
-
-	if (type != mem->type ||
-		agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type)) {
-		return -EINVAL;
-	}
-
-	io_pg_start = hp->io_pages_per_kpage * pg_start;
-	io_pg_count = hp->io_pages_per_kpage * mem->page_count;
-	for (i = io_pg_start; i < io_pg_count + io_pg_start; i++) {
-		hp->gatt[i] = agp_bridge->scratch_page;
-	}
-
-	agp_bridge->driver->tlb_flush(mem);
-	return 0;
-}
-
-static unsigned long
-hp_zx1_mask_memory (struct agp_bridge_data *bridge, dma_addr_t addr, int type)
-{
-	return HP_ZX1_PDIR_VALID_BIT | addr;
-}
-
-static void
-hp_zx1_enable (struct agp_bridge_data *bridge, u32 mode)
-{
-	struct _hp_private *hp = &hp_private;
-	u32 command;
-
-	command = readl(hp->lba_regs+hp->lba_cap_offset+PCI_AGP_STATUS);
-	command = agp_collect_device_status(bridge, mode, command);
-	command |= 0x00000100;
-
-	writel(command, hp->lba_regs+hp->lba_cap_offset+PCI_AGP_COMMAND);
-
-	agp_device_command(command, (mode & AGP8X_MODE) != 0);
-}
-
-const struct agp_bridge_driver hp_zx1_driver = {
-	.owner			= THIS_MODULE,
-	.size_type		= FIXED_APER_SIZE,
-	.configure		= hp_zx1_configure,
-	.fetch_size		= hp_zx1_fetch_size,
-	.cleanup		= hp_zx1_cleanup,
-	.tlb_flush		= hp_zx1_tlbflush,
-	.mask_memory		= hp_zx1_mask_memory,
-	.masks			= hp_zx1_masks,
-	.agp_enable		= hp_zx1_enable,
-	.cache_flush		= global_cache_flush,
-	.create_gatt_table	= hp_zx1_create_gatt_table,
-	.free_gatt_table	= hp_zx1_free_gatt_table,
-	.insert_memory		= hp_zx1_insert_memory,
-	.remove_memory		= hp_zx1_remove_memory,
-	.alloc_by_type		= agp_generic_alloc_by_type,
-	.free_by_type		= agp_generic_free_by_type,
-	.agp_alloc_page		= agp_generic_alloc_page,
-	.agp_alloc_pages	= agp_generic_alloc_pages,
-	.agp_destroy_page	= agp_generic_destroy_page,
-	.agp_destroy_pages	= agp_generic_destroy_pages,
-	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
-	.cant_use_aperture	= true,
-};
-
-static int __init
-hp_zx1_setup (u64 ioc_hpa, u64 lba_hpa)
-{
-	struct agp_bridge_data *bridge;
-	int error = 0;
-
-	error = hp_zx1_ioc_init(ioc_hpa);
-	if (error)
-		goto fail;
-
-	error = hp_zx1_lba_init(lba_hpa);
-	if (error)
-		goto fail;
-
-	bridge = agp_alloc_bridge();
-	if (!bridge) {
-		error = -ENOMEM;
-		goto fail;
-	}
-	bridge->driver = &hp_zx1_driver;
-
-	fake_bridge_dev.vendor = PCI_VENDOR_ID_HP;
-	fake_bridge_dev.device = PCI_DEVICE_ID_HP_PCIX_LBA;
-	bridge->dev = &fake_bridge_dev;
-
-	error = agp_add_bridge(bridge);
-  fail:
-	if (error)
-		hp_zx1_cleanup();
-	return error;
-}
-
-static acpi_status __init
-zx1_gart_probe (acpi_handle obj, u32 depth, void *context, void **ret)
-{
-	acpi_handle handle, parent;
-	acpi_status status;
-	struct acpi_device_info *info;
-	u64 lba_hpa, sba_hpa, length;
-	int match;
-
-	status = hp_acpi_csr_space(obj, &lba_hpa, &length);
-	if (ACPI_FAILURE(status))
-		return AE_OK; /* keep looking for another bridge */
-
-	/* Look for an enclosing IOC scope and find its CSR space */
-	handle = obj;
-	do {
-		status = acpi_get_object_info(handle, &info);
-		if (ACPI_SUCCESS(status) && (info->valid & ACPI_VALID_HID)) {
-			/* TBD check _CID also */
-			match = (strcmp(info->hardware_id.string, "HWP0001") == 0);
-			kfree(info);
-			if (match) {
-				status = hp_acpi_csr_space(handle, &sba_hpa, &length);
-				if (ACPI_SUCCESS(status))
-					break;
-				else {
-					printk(KERN_ERR PFX "Detected HP ZX1 "
-					       "AGP LBA but no IOC.\n");
-					return AE_OK;
-				}
-			}
-		}
-
-		status = acpi_get_parent(handle, &parent);
-		handle = parent;
-	} while (ACPI_SUCCESS(status));
-
-	if (ACPI_FAILURE(status))
-		return AE_OK;	/* found no enclosing IOC */
-
-	if (hp_zx1_setup(sba_hpa + HP_ZX1_IOC_OFFSET, lba_hpa))
-		return AE_OK;
-
-	printk(KERN_INFO PFX "Detected HP ZX1 %s AGP chipset "
-		"(ioc=%llx, lba=%llx)\n", (char *)context,
-		sba_hpa + HP_ZX1_IOC_OFFSET, lba_hpa);
-
-	hp_zx1_gart_found = 1;
-	return AE_CTRL_TERMINATE; /* we only support one bridge; quit looking */
-}
-
-static int __init
-agp_hp_init (void)
-{
-	if (agp_off)
-		return -EINVAL;
-
-	acpi_get_devices("HWP0003", zx1_gart_probe, "HWP0003", NULL);
-	if (hp_zx1_gart_found)
-		return 0;
-
-	acpi_get_devices("HWP0007", zx1_gart_probe, "HWP0007", NULL);
-	if (hp_zx1_gart_found)
-		return 0;
-
-	return -ENODEV;
-}
-
-static void __exit
-agp_hp_cleanup (void)
-{
-}
-
-module_init(agp_hp_init);
-module_exit(agp_hp_cleanup);
-
-MODULE_LICENSE("GPL and additional rights");