From 68db4e9e5fcd3509cbd7f6bdc226ee761c140a24 Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:02 +0530
Subject: microblaze/PCI: Remove unused early_read_config_byte() et al
 declarations

early_read_config_byte() and similar are declared but never defined.

Remove the unused declarations.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-2-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/include/asm/pci-bridge.h | 18 ------------
 arch/microblaze/pci/pci-common.c         |  5 ----
 arch/microblaze/pci/xilinx_pci.c         | 48 --------------------------------
 3 files changed, 71 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h
index 171b40a2d905..a9d3940879c1 100644
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -103,24 +103,6 @@ static inline int isa_vaddr_is_ioport(void __iomem *address)
 }
 #endif /* CONFIG_PCI */
 
-/* These are used for config access before all the PCI probing
-   has been done. */
-extern int early_read_config_byte(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u8 *val);
-extern int early_read_config_word(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u16 *val);
-extern int early_read_config_dword(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u32 *val);
-extern int early_write_config_byte(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u8 val);
-extern int early_write_config_word(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u16 val);
-extern int early_write_config_dword(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u32 val);
-
-extern int early_find_capability(struct pci_controller *hose, int bus,
-				 int dev_fn, int cap);
-
 extern void setup_indirect_pci(struct pci_controller *hose,
 			       resource_size_t cfg_addr,
 			       resource_size_t cfg_data, u32 flags);
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 33bab7eec731..69ce51c7a84c 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -1060,8 +1060,3 @@ EARLY_PCI_OP(write, byte, u8)
 EARLY_PCI_OP(write, word, u16)
 EARLY_PCI_OP(write, dword, u32)
 
-int early_find_capability(struct pci_controller *hose, int bus, int devfn,
-			  int cap)
-{
-	return pci_bus_find_capability(fake_pci_bus(hose, bus), devfn, cap);
-}
diff --git a/arch/microblaze/pci/xilinx_pci.c b/arch/microblaze/pci/xilinx_pci.c
index f4cb86fffcee..7ed664723f7c 100644
--- a/arch/microblaze/pci/xilinx_pci.c
+++ b/arch/microblaze/pci/xilinx_pci.c
@@ -76,44 +76,6 @@ xilinx_pci_exclude_device(struct pci_controller *hose, u_char bus, u8 devfn)
 {
 	return (bus != 0);
 }
-
-/**
- * xilinx_early_pci_scan - List pci config space for available devices
- *
- * List pci devices in very early phase.
- */
-static void __init xilinx_early_pci_scan(struct pci_controller *hose)
-{
-	u32 bus = 0;
-	u32 val, dev, func, offset;
-
-	/* Currently we have only 2 device connected - up-to 32 devices */
-	for (dev = 0; dev < 2; dev++) {
-		/* List only first function number - up-to 8 functions */
-		for (func = 0; func < 1; func++) {
-			pr_info("%02x:%02x:%02x", bus, dev, func);
-			/* read the first 64 standardized bytes */
-			/* Up-to 192 bytes can be list of capabilities */
-			for (offset = 0; offset < 64; offset += 4) {
-				early_read_config_dword(hose, bus,
-					PCI_DEVFN(dev, func), offset, &val);
-				if (offset == 0 && val == 0xFFFFFFFF) {
-					pr_cont("\nABSENT");
-					break;
-				}
-				if (!(offset % 0x10))
-					pr_cont("\n%04x:    ", offset);
-
-				pr_cont("%08x  ", val);
-			}
-			pr_info("\n");
-		}
-	}
-}
-#else
-static void __init xilinx_early_pci_scan(struct pci_controller *hose)
-{
-}
 #endif
 
 /**
@@ -146,15 +108,6 @@ void __init xilinx_pci_init(void)
 			   r.start + XPLB_PCI_DATA,
 			   INDIRECT_TYPE_SET_CFG_TYPE);
 
-	/* According to the xilinx plbv46_pci documentation the soft-core starts
-	 * a self-init when the bus master enable bit is set. Without this bit
-	 * set the pci bus can't be scanned.
-	 */
-	early_write_config_word(hose, 0, 0, PCI_COMMAND, PCI_HOST_ENABLE_CMD);
-
-	/* Set the max latency timer to 255 */
-	early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0xff);
-
 	/* Set the max bus number to 255, and bus/subbus no's to 0 */
 	pci_reg = of_iomap(pci_node, 0);
 	WARN_ON(!pci_reg);
@@ -166,5 +119,4 @@ void __init xilinx_pci_init(void)
 					INDIRECT_TYPE_SET_CFG_TYPE);
 
 	pr_info("xilinx-pci: Registered PCI host bridge\n");
-	xilinx_early_pci_scan(hose);
 }
-- 
cgit v1.2.3


From fe2b509768a4bf128428f206eda4cfab6735da9d Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:03 +0530
Subject: microblaze/PCI: Remove Null PCI config access unused functions

Remove unused NULL_PCI_OP config access functions, for the case when
we can't find a hose.

Remove unused EARLY_PCI_OP and other declarations.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-3-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/pci/pci-common.c | 64 ----------------------------------------
 1 file changed, 64 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 69ce51c7a84c..58397cf57f6a 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -996,67 +996,3 @@ long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
 
 	return result;
 }
-
-/*
- * Null PCI config access functions, for the case when we can't
- * find a hose.
- */
-#define NULL_PCI_OP(rw, size, type)					\
-static int								\
-null_##rw##_config_##size(struct pci_dev *dev, int offset, type val)	\
-{									\
-	return PCIBIOS_DEVICE_NOT_FOUND;				\
-}
-
-static int
-null_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
-		 int len, u32 *val)
-{
-	return PCIBIOS_DEVICE_NOT_FOUND;
-}
-
-static int
-null_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
-		  int len, u32 val)
-{
-	return PCIBIOS_DEVICE_NOT_FOUND;
-}
-
-static struct pci_ops null_pci_ops = {
-	.read = null_read_config,
-	.write = null_write_config,
-};
-
-/*
- * These functions are used early on before PCI scanning is done
- * and all of the pci_dev and pci_bus structures have been created.
- */
-static struct pci_bus *
-fake_pci_bus(struct pci_controller *hose, int busnr)
-{
-	static struct pci_bus bus;
-
-	if (!hose)
-		pr_err("Can't find hose for PCI bus %d!\n", busnr);
-
-	bus.number = busnr;
-	bus.sysdata = hose;
-	bus.ops = hose ? hose->ops : &null_pci_ops;
-	return &bus;
-}
-
-#define EARLY_PCI_OP(rw, size, type)					\
-int early_##rw##_config_##size(struct pci_controller *hose, int bus,	\
-			       int devfn, int offset, type value)	\
-{									\
-	return pci_bus_##rw##_config_##size(fake_pci_bus(hose, bus),	\
-					    devfn, offset, value);	\
-}
-
-EARLY_PCI_OP(read, byte, u8 *)
-EARLY_PCI_OP(read, word, u16 *)
-EARLY_PCI_OP(read, dword, u32 *)
-EARLY_PCI_OP(write, byte, u8)
-EARLY_PCI_OP(write, word, u16)
-EARLY_PCI_OP(write, dword, u32)
-
-- 
cgit v1.2.3


From fcfb746c90cae48838daf012816b7b130158ef52 Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:04 +0530
Subject: microblaze/PCI: Remove unused PCI bus scan if configured as a host

This routine is meant to be used early during boot, when the
PCI bus numbers have not yet been assigned, and you need to
issue PCI config cycles to an OF device.

It could also be used to "fix" RTAS config cycles if you want
to set pci_assign_all_buses to 1 and still use RTAS for PCI
config cycles.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-4-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/include/asm/pci-bridge.h |  4 ----
 arch/microblaze/pci/pci-common.c         | 19 -------------------
 2 files changed, 23 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h
index a9d3940879c1..ce74b0c52be2 100644
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -107,10 +107,6 @@ extern void setup_indirect_pci(struct pci_controller *hose,
 			       resource_size_t cfg_addr,
 			       resource_size_t cfg_data, u32 flags);
 
-/* Get the PCI host controller for an OF device */
-extern struct pci_controller *pci_find_hose_for_OF_device(
-			struct device_node *node);
-
 /* Fill up host controller resources from the OF node */
 extern void pci_process_bridge_OF_ranges(struct pci_controller *hose,
 			struct device_node *dev, int primary);
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 58397cf57f6a..6ccaf339d69a 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -122,25 +122,6 @@ unsigned long pci_address_to_pio(phys_addr_t address)
 }
 EXPORT_SYMBOL_GPL(pci_address_to_pio);
 
-/* This routine is meant to be used early during boot, when the
- * PCI bus numbers have not yet been assigned, and you need to
- * issue PCI config cycles to an OF device.
- * It could also be used to "fix" RTAS config cycles if you want
- * to set pci_assign_all_buses to 1 and still use RTAS for PCI
- * config cycles.
- */
-struct pci_controller *pci_find_hose_for_OF_device(struct device_node *node)
-{
-	while (node) {
-		struct pci_controller *hose, *tmp;
-		list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
-			if (hose->dn == node)
-				return hose;
-		node = node->parent;
-	}
-	return NULL;
-}
-
 void pcibios_set_master(struct pci_dev *dev)
 {
 	/* No special bus mastering setup handling */
-- 
cgit v1.2.3


From fc6dd9c446f2e5273e2584b735b8d3e0d1d15924 Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:05 +0530
Subject: microblaze/PCI: Remove unused PCI legacy IO's access on a bus

Remove PCI legacy read,write and mmap access IO's
on a bus

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-5-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/include/asm/pci.h |  10 ---
 arch/microblaze/pci/pci-common.c  | 140 --------------------------------------
 2 files changed, 150 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
index d90528064604..34337e2a63c0 100644
--- a/arch/microblaze/include/asm/pci.h
+++ b/arch/microblaze/include/asm/pci.h
@@ -48,16 +48,6 @@ struct vm_area_struct;
 #define ARCH_GENERIC_PCI_MMAP_RESOURCE	1
 #define arch_can_pci_mmap_io()		1
 
-extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
-			   size_t count);
-extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
-			   size_t count);
-extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
-				      struct vm_area_struct *vma,
-				      enum pci_mmap_state mmap_state);
-
-#define HAVE_PCI_LEGACY	1
-
 extern void pcibios_resource_survey(void);
 
 struct file;
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 6ccaf339d69a..ef4a9fc3377f 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -146,146 +146,6 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma)
 	return 0;
 }
 
-/* This provides legacy IO read access on a bus */
-int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val, size_t size)
-{
-	unsigned long offset;
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	struct resource *rp = &hose->io_resource;
-	void __iomem *addr;
-
-	/* Check if port can be supported by that bus. We only check
-	 * the ranges of the PHB though, not the bus itself as the rules
-	 * for forwarding legacy cycles down bridges are not our problem
-	 * here. So if the host bridge supports it, we do it.
-	 */
-	offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-	offset += port;
-
-	if (!(rp->flags & IORESOURCE_IO))
-		return -ENXIO;
-	if (offset < rp->start || (offset + size) > rp->end)
-		return -ENXIO;
-	addr = hose->io_base_virt + port;
-
-	switch (size) {
-	case 1:
-		*((u8 *)val) = in_8(addr);
-		return 1;
-	case 2:
-		if (port & 1)
-			return -EINVAL;
-		*((u16 *)val) = in_le16(addr);
-		return 2;
-	case 4:
-		if (port & 3)
-			return -EINVAL;
-		*((u32 *)val) = in_le32(addr);
-		return 4;
-	}
-	return -EINVAL;
-}
-
-/* This provides legacy IO write access on a bus */
-int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val, size_t size)
-{
-	unsigned long offset;
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	struct resource *rp = &hose->io_resource;
-	void __iomem *addr;
-
-	/* Check if port can be supported by that bus. We only check
-	 * the ranges of the PHB though, not the bus itself as the rules
-	 * for forwarding legacy cycles down bridges are not our problem
-	 * here. So if the host bridge supports it, we do it.
-	 */
-	offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-	offset += port;
-
-	if (!(rp->flags & IORESOURCE_IO))
-		return -ENXIO;
-	if (offset < rp->start || (offset + size) > rp->end)
-		return -ENXIO;
-	addr = hose->io_base_virt + port;
-
-	/* WARNING: The generic code is idiotic. It gets passed a pointer
-	 * to what can be a 1, 2 or 4 byte quantity and always reads that
-	 * as a u32, which means that we have to correct the location of
-	 * the data read within those 32 bits for size 1 and 2
-	 */
-	switch (size) {
-	case 1:
-		out_8(addr, val >> 24);
-		return 1;
-	case 2:
-		if (port & 1)
-			return -EINVAL;
-		out_le16(addr, val >> 16);
-		return 2;
-	case 4:
-		if (port & 3)
-			return -EINVAL;
-		out_le32(addr, val);
-		return 4;
-	}
-	return -EINVAL;
-}
-
-/* This provides legacy IO or memory mmap access on a bus */
-int pci_mmap_legacy_page_range(struct pci_bus *bus,
-			       struct vm_area_struct *vma,
-			       enum pci_mmap_state mmap_state)
-{
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	resource_size_t offset =
-		((resource_size_t)vma->vm_pgoff) << PAGE_SHIFT;
-	resource_size_t size = vma->vm_end - vma->vm_start;
-	struct resource *rp;
-
-	pr_debug("pci_mmap_legacy_page_range(%04x:%02x, %s @%llx..%llx)\n",
-		 pci_domain_nr(bus), bus->number,
-		 mmap_state == pci_mmap_mem ? "MEM" : "IO",
-		 (unsigned long long)offset,
-		 (unsigned long long)(offset + size - 1));
-
-	if (mmap_state == pci_mmap_mem) {
-		/* Hack alert !
-		 *
-		 * Because X is lame and can fail starting if it gets an error
-		 * trying to mmap legacy_mem (instead of just moving on without
-		 * legacy memory access) we fake it here by giving it anonymous
-		 * memory, effectively behaving just like /dev/zero
-		 */
-		if ((offset + size) > hose->isa_mem_size) {
-			pr_debug("Process %s (pid:%d) mapped non-existing PCI",
-				current->comm, current->pid);
-			pr_debug("legacy memory for 0%04x:%02x\n",
-				pci_domain_nr(bus), bus->number);
-			if (vma->vm_flags & VM_SHARED)
-				return shmem_zero_setup(vma);
-			return 0;
-		}
-		offset += hose->isa_mem_phys;
-	} else {
-		unsigned long io_offset = (unsigned long)hose->io_base_virt -
-								_IO_BASE;
-		unsigned long roffset = offset + io_offset;
-		rp = &hose->io_resource;
-		if (!(rp->flags & IORESOURCE_IO))
-			return -ENXIO;
-		if (roffset < rp->start || (roffset + size) > rp->end)
-			return -ENXIO;
-		offset += hose->io_base_phys;
-	}
-	pr_debug(" -> mapping phys %llx\n", (unsigned long long)offset);
-
-	vma->vm_pgoff = offset >> PAGE_SHIFT;
-	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-	return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
-			       vma->vm_end - vma->vm_start,
-			       vma->vm_page_prot);
-}
-
 void pci_resource_to_user(const struct pci_dev *dev, int bar,
 			  const struct resource *rsrc,
 			  resource_size_t *start, resource_size_t *end)
-- 
cgit v1.2.3


From 3d6010ec098bbbe28e35f8a487e04ba02ce6bbe3 Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:06 +0530
Subject: microblaze/PCI: Remove unused device tree parsing for a host bridge
 resources

Remove unused pci_process_bridge_OF_ranges function, used to
parse the "ranges" property of a PCI host device.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-6-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/include/asm/pci-bridge.h |  13 ---
 arch/microblaze/pci/pci-common.c         | 163 -------------------------------
 arch/microblaze/pci/xilinx_pci.c         |   5 -
 3 files changed, 181 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h
index ce74b0c52be2..252bcc14c863 100644
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -38,20 +38,11 @@ struct pci_controller {
 	void __iomem *io_base_virt;
 	resource_size_t io_base_phys;
 
-	resource_size_t pci_io_size;
-
 	/* Some machines (PReP) have a non 1:1 mapping of
 	 * the PCI memory space in the CPU bus space
 	 */
 	resource_size_t pci_mem_offset;
 
-	/* Some machines have a special region to forward the ISA
-	 * "memory" cycles such as VGA memory regions. Left to 0
-	 * if unsupported
-	 */
-	resource_size_t isa_mem_phys;
-	resource_size_t isa_mem_size;
-
 	struct pci_ops *ops;
 	unsigned int __iomem *cfg_addr;
 	void __iomem *cfg_data;
@@ -107,10 +98,6 @@ extern void setup_indirect_pci(struct pci_controller *hose,
 			       resource_size_t cfg_addr,
 			       resource_size_t cfg_data, u32 flags);
 
-/* Fill up host controller resources from the OF node */
-extern void pci_process_bridge_OF_ranges(struct pci_controller *hose,
-			struct device_node *dev, int primary);
-
 /* Allocate & free a PCI host bridge structure */
 extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev);
 extern void pcibios_free_controller(struct pci_controller *phb);
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index ef4a9fc3377f..12764df0472e 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -171,169 +171,6 @@ void pci_resource_to_user(const struct pci_dev *dev, int bar,
 	*end = rsrc->end;
 }
 
-/**
- * pci_process_bridge_OF_ranges - Parse PCI bridge resources from device tree
- * @hose: newly allocated pci_controller to be setup
- * @dev: device node of the host bridge
- * @primary: set if primary bus (32 bits only, soon to be deprecated)
- *
- * This function will parse the "ranges" property of a PCI host bridge device
- * node and setup the resource mapping of a pci controller based on its
- * content.
- *
- * Life would be boring if it wasn't for a few issues that we have to deal
- * with here:
- *
- *   - We can only cope with one IO space range and up to 3 Memory space
- *     ranges. However, some machines (thanks Apple !) tend to split their
- *     space into lots of small contiguous ranges. So we have to coalesce.
- *
- *   - We can only cope with all memory ranges having the same offset
- *     between CPU addresses and PCI addresses. Unfortunately, some bridges
- *     are setup for a large 1:1 mapping along with a small "window" which
- *     maps PCI address 0 to some arbitrary high address of the CPU space in
- *     order to give access to the ISA memory hole.
- *     The way out of here that I've chosen for now is to always set the
- *     offset based on the first resource found, then override it if we
- *     have a different offset and the previous was set by an ISA hole.
- *
- *   - Some busses have IO space not starting at 0, which causes trouble with
- *     the way we do our IO resource renumbering. The code somewhat deals with
- *     it for 64 bits but I would expect problems on 32 bits.
- *
- *   - Some 32 bits platforms such as 4xx can have physical space larger than
- *     32 bits so we need to use 64 bits values for the parsing
- */
-void pci_process_bridge_OF_ranges(struct pci_controller *hose,
-				  struct device_node *dev, int primary)
-{
-	int memno = 0, isa_hole = -1;
-	unsigned long long isa_mb = 0;
-	struct resource *res;
-	struct of_pci_range range;
-	struct of_pci_range_parser parser;
-
-	pr_info("PCI host bridge %pOF %s ranges:\n",
-	       dev, primary ? "(primary)" : "");
-
-	/* Check for ranges property */
-	if (of_pci_range_parser_init(&parser, dev))
-		return;
-
-	pr_debug("Parsing ranges property...\n");
-	for_each_of_pci_range(&parser, &range) {
-		/* Read next ranges element */
-
-		/* If we failed translation or got a zero-sized region
-		 * (some FW try to feed us with non sensical zero sized regions
-		 * such as power3 which look like some kind of attempt
-		 * at exposing the VGA memory hole)
-		 */
-		if (range.cpu_addr == OF_BAD_ADDR || range.size == 0)
-			continue;
-
-		/* Act based on address space type */
-		res = NULL;
-		switch (range.flags & IORESOURCE_TYPE_BITS) {
-		case IORESOURCE_IO:
-			pr_info("  IO 0x%016llx..0x%016llx -> 0x%016llx\n",
-				range.cpu_addr, range.cpu_addr + range.size - 1,
-				range.pci_addr);
-
-			/* We support only one IO range */
-			if (hose->pci_io_size) {
-				pr_info(" \\--> Skipped (too many) !\n");
-				continue;
-			}
-			/* On 32 bits, limit I/O space to 16MB */
-			if (range.size > 0x01000000)
-				range.size = 0x01000000;
-
-			/* 32 bits needs to map IOs here */
-			hose->io_base_virt = ioremap(range.cpu_addr,
-						range.size);
-
-			/* Expect trouble if pci_addr is not 0 */
-			if (primary)
-				isa_io_base =
-					(unsigned long)hose->io_base_virt;
-			/* pci_io_size and io_base_phys always represent IO
-			 * space starting at 0 so we factor in pci_addr
-			 */
-			hose->pci_io_size = range.pci_addr + range.size;
-			hose->io_base_phys = range.cpu_addr - range.pci_addr;
-
-			/* Build resource */
-			res = &hose->io_resource;
-			range.cpu_addr = range.pci_addr;
-
-			break;
-		case IORESOURCE_MEM:
-			pr_info(" MEM 0x%016llx..0x%016llx -> 0x%016llx %s\n",
-				range.cpu_addr, range.cpu_addr + range.size - 1,
-				range.pci_addr,
-				(range.flags & IORESOURCE_PREFETCH) ?
-				"Prefetch" : "");
-
-			/* We support only 3 memory ranges */
-			if (memno >= 3) {
-				pr_info(" \\--> Skipped (too many) !\n");
-				continue;
-			}
-			/* Handles ISA memory hole space here */
-			if (range.pci_addr == 0) {
-				isa_mb = range.cpu_addr;
-				isa_hole = memno;
-				if (primary || isa_mem_base == 0)
-					isa_mem_base = range.cpu_addr;
-				hose->isa_mem_phys = range.cpu_addr;
-				hose->isa_mem_size = range.size;
-			}
-
-			/* We get the PCI/Mem offset from the first range or
-			 * the, current one if the offset came from an ISA
-			 * hole. If they don't match, bugger.
-			 */
-			if (memno == 0 ||
-			    (isa_hole >= 0 && range.pci_addr != 0 &&
-			     hose->pci_mem_offset == isa_mb))
-				hose->pci_mem_offset = range.cpu_addr -
-							range.pci_addr;
-			else if (range.pci_addr != 0 &&
-				 hose->pci_mem_offset != range.cpu_addr -
-							range.pci_addr) {
-				pr_info(" \\--> Skipped (offset mismatch) !\n");
-				continue;
-			}
-
-			/* Build resource */
-			res = &hose->mem_resources[memno++];
-			break;
-		}
-		if (res != NULL) {
-			res->name = dev->full_name;
-			res->flags = range.flags;
-			res->start = range.cpu_addr;
-			res->end = range.cpu_addr + range.size - 1;
-			res->parent = res->child = res->sibling = NULL;
-		}
-	}
-
-	/* If there's an ISA hole and the pci_mem_offset is -not- matching
-	 * the ISA hole offset, then we need to remove the ISA hole from
-	 * the resource list for that brige
-	 */
-	if (isa_hole >= 0 && hose->pci_mem_offset != isa_mb) {
-		unsigned int next = isa_hole + 1;
-		pr_info(" Removing ISA hole at 0x%016llx\n", isa_mb);
-		if (next < memno)
-			memmove(&hose->mem_resources[isa_hole],
-				&hose->mem_resources[next],
-				sizeof(struct resource) * (memno - next));
-		hose->mem_resources[--memno].flags = 0;
-	}
-}
-
 /* Display the domain number in /proc */
 int pci_proc_domain(struct pci_bus *bus)
 {
diff --git a/arch/microblaze/pci/xilinx_pci.c b/arch/microblaze/pci/xilinx_pci.c
index 7ed664723f7c..f1a51129b94c 100644
--- a/arch/microblaze/pci/xilinx_pci.c
+++ b/arch/microblaze/pci/xilinx_pci.c
@@ -114,9 +114,4 @@ void __init xilinx_pci_init(void)
 	out_be32(pci_reg + XPLB_PCI_BUS, 0x000000ff);
 	iounmap(pci_reg);
 
-	/* Register the host bridge with the linux kernel! */
-	pci_process_bridge_OF_ranges(hose, pci_node,
-					INDIRECT_TYPE_SET_CFG_TYPE);
-
-	pr_info("xilinx-pci: Registered PCI host bridge\n");
 }
-- 
cgit v1.2.3


From 4308e3c9e1ea9112865b10ed83c03b8d5d81aa32 Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:07 +0530
Subject: microblaze/PCI: Remove unused allocation & free of PCI host bridge
 structure

Remove unused allocation and freeing of PCI host bridge structure.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-7-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/include/asm/pci-bridge.h |  5 -----
 arch/microblaze/pci/pci-common.c         | 29 -----------------------------
 arch/microblaze/pci/xilinx_pci.c         |  6 ------
 3 files changed, 40 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h
index 252bcc14c863..018c632abcf8 100644
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -25,7 +25,6 @@ static inline int pcibios_vaddr_is_ioport(void __iomem *address)
  */
 struct pci_controller {
 	struct pci_bus *bus;
-	char is_dynamic;
 	struct device_node *dn;
 	struct list_head list_node;
 	struct device *parent;
@@ -98,9 +97,5 @@ extern void setup_indirect_pci(struct pci_controller *hose,
 			       resource_size_t cfg_addr,
 			       resource_size_t cfg_data, u32 flags);
 
-/* Allocate & free a PCI host bridge structure */
-extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev);
-extern void pcibios_free_controller(struct pci_controller *phb);
-
 #endif	/* __KERNEL__ */
 #endif	/* _ASM_MICROBLAZE_PCI_BRIDGE_H */
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 12764df0472e..2965892d05f8 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -38,9 +38,6 @@
 static DEFINE_SPINLOCK(hose_spinlock);
 LIST_HEAD(hose_list);
 
-/* XXX kill that some day ... */
-static int global_phb_number;		/* Global phb counter */
-
 /* ISA Memory physical address */
 resource_size_t isa_mem_base;
 
@@ -49,32 +46,6 @@ EXPORT_SYMBOL(isa_io_base);
 
 static int pci_bus_count;
 
-struct pci_controller *pcibios_alloc_controller(struct device_node *dev)
-{
-	struct pci_controller *phb;
-
-	phb = zalloc_maybe_bootmem(sizeof(struct pci_controller), GFP_KERNEL);
-	if (!phb)
-		return NULL;
-	spin_lock(&hose_spinlock);
-	phb->global_number = global_phb_number++;
-	list_add_tail(&phb->list_node, &hose_list);
-	spin_unlock(&hose_spinlock);
-	phb->dn = dev;
-	phb->is_dynamic = mem_init_done;
-	return phb;
-}
-
-void pcibios_free_controller(struct pci_controller *phb)
-{
-	spin_lock(&hose_spinlock);
-	list_del(&phb->list_node);
-	spin_unlock(&hose_spinlock);
-
-	if (phb->is_dynamic)
-		kfree(phb);
-}
-
 static resource_size_t pcibios_io_size(const struct pci_controller *hose)
 {
 	return resource_size(&hose->io_resource);
diff --git a/arch/microblaze/pci/xilinx_pci.c b/arch/microblaze/pci/xilinx_pci.c
index f1a51129b94c..3fa16e3c8e48 100644
--- a/arch/microblaze/pci/xilinx_pci.c
+++ b/arch/microblaze/pci/xilinx_pci.c
@@ -97,12 +97,6 @@ void __init xilinx_pci_init(void)
 		return;
 	}
 
-	hose = pcibios_alloc_controller(pci_node);
-	if (!hose) {
-		pr_err("xilinx-pci: pcibios_alloc_controller() failed\n");
-		return;
-	}
-
 	/* Setup config space */
 	setup_indirect_pci(hose, r.start + XPLB_PCI_ADDR,
 			   r.start + XPLB_PCI_DATA,
-- 
cgit v1.2.3


From 7df700afd9c4855617e9a102518bd988395eb249 Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:08 +0530
Subject: microblaze/PCI: Remove unused PCI BIOS resource allocation

Remove PCI BIOSn unused code which provide's resource allocation for
all pci bus and pci host controller memory initialization.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-8-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/include/asm/pci-bridge.h |   2 -
 arch/microblaze/include/asm/pci.h        |   4 -
 arch/microblaze/pci/pci-common.c         | 489 -------------------------------
 3 files changed, 495 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h
index 018c632abcf8..170369dcdbff 100644
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -74,8 +74,6 @@ struct pci_controller {
 	 * ranges since the common pci_bus structure can't handle more
 	 */
 	struct resource io_resource;
-	struct resource mem_resources[3];
-	int global_number;	/* PCI domain number */
 };
 
 #ifdef CONFIG_PCI
diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
index 34337e2a63c0..6da7523d9613 100644
--- a/arch/microblaze/include/asm/pci.h
+++ b/arch/microblaze/include/asm/pci.h
@@ -28,8 +28,6 @@
 #define IOBASE_ISA_IO		3
 #define IOBASE_ISA_MEM		4
 
-#define pcibios_scan_all_fns(a, b)	0
-
 /*
  * Set this to 1 if you want the kernel to re-assign all PCI
  * bus numbers (don't do that on ppc64 yet !)
@@ -48,8 +46,6 @@ struct vm_area_struct;
 #define ARCH_GENERIC_PCI_MMAP_RESOURCE	1
 #define arch_can_pci_mmap_io()		1
 
-extern void pcibios_resource_survey(void);
-
 struct file;
 
 /* This part of code was originally in xilinx-pci.h */
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 2965892d05f8..085e673d388b 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -44,8 +44,6 @@ resource_size_t isa_mem_base;
 unsigned long isa_io_base;
 EXPORT_SYMBOL(isa_io_base);
 
-static int pci_bus_count;
-
 static resource_size_t pcibios_io_size(const struct pci_controller *hose)
 {
 	return resource_size(&hose->io_resource);
@@ -93,11 +91,6 @@ unsigned long pci_address_to_pio(phys_addr_t address)
 }
 EXPORT_SYMBOL_GPL(pci_address_to_pio);
 
-void pcibios_set_master(struct pci_dev *dev)
-{
-	/* No special bus mastering setup handling */
-}
-
 /*
  * Platform support for /proc/bus/pci/X/Y mmap()s.
  */
@@ -117,494 +110,12 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma)
 	return 0;
 }
 
-void pci_resource_to_user(const struct pci_dev *dev, int bar,
-			  const struct resource *rsrc,
-			  resource_size_t *start, resource_size_t *end)
-{
-	struct pci_bus_region region;
-
-	if (rsrc->flags & IORESOURCE_IO) {
-		pcibios_resource_to_bus(dev->bus, &region,
-					(struct resource *) rsrc);
-		*start = region.start;
-		*end = region.end;
-		return;
-	}
-
-	/* We pass a CPU physical address to userland for MMIO instead of a
-	 * BAR value because X is lame and expects to be able to use that
-	 * to pass to /dev/mem!
-	 *
-	 * That means we may have 64-bit values where some apps only expect
-	 * 32 (like X itself since it thinks only Sparc has 64-bit MMIO).
-	 */
-	*start = rsrc->start;
-	*end = rsrc->end;
-}
-
 /* Display the domain number in /proc */
 int pci_proc_domain(struct pci_bus *bus)
 {
 	return pci_domain_nr(bus);
 }
 
-/* This header fixup will do the resource fixup for all devices as they are
- * probed, but not for bridge ranges
- */
-static void pcibios_fixup_resources(struct pci_dev *dev)
-{
-	struct pci_controller *hose = pci_bus_to_host(dev->bus);
-	int i;
-
-	if (!hose) {
-		pr_err("No host bridge for PCI dev %s !\n",
-		       pci_name(dev));
-		return;
-	}
-	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
-		struct resource *res = dev->resource + i;
-		if (!res->flags)
-			continue;
-		if (res->start == 0) {
-			pr_debug("PCI:%s Resource %d %016llx-%016llx [%x]",
-				 pci_name(dev), i,
-				 (unsigned long long)res->start,
-				 (unsigned long long)res->end,
-				 (unsigned int)res->flags);
-			pr_debug("is unassigned\n");
-			res->end -= res->start;
-			res->start = 0;
-			res->flags |= IORESOURCE_UNSET;
-			continue;
-		}
-
-		pr_debug("PCI:%s Resource %d %016llx-%016llx [%x]\n",
-			 pci_name(dev), i,
-			 (unsigned long long)res->start,
-			 (unsigned long long)res->end,
-			 (unsigned int)res->flags);
-	}
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_fixup_resources);
-
-int pcibios_device_add(struct pci_dev *dev)
-{
-	dev->irq = of_irq_parse_and_map_pci(dev, 0, 0);
-
-	return 0;
-}
-
-/*
- * Reparent resource children of pr that conflict with res
- * under res, and make res replace those children.
- */
-static int __init reparent_resources(struct resource *parent,
-				     struct resource *res)
-{
-	struct resource *p, **pp;
-	struct resource **firstpp = NULL;
-
-	for (pp = &parent->child; (p = *pp) != NULL; pp = &p->sibling) {
-		if (p->end < res->start)
-			continue;
-		if (res->end < p->start)
-			break;
-		if (p->start < res->start || p->end > res->end)
-			return -1;	/* not completely contained */
-		if (firstpp == NULL)
-			firstpp = pp;
-	}
-	if (firstpp == NULL)
-		return -1;	/* didn't find any conflicting entries? */
-	res->parent = parent;
-	res->child = *firstpp;
-	res->sibling = *pp;
-	*firstpp = res;
-	*pp = NULL;
-	for (p = res->child; p != NULL; p = p->sibling) {
-		p->parent = res;
-		pr_debug("PCI: Reparented %s [%llx..%llx] under %s\n",
-			 p->name,
-			 (unsigned long long)p->start,
-			 (unsigned long long)p->end, res->name);
-	}
-	return 0;
-}
-
-/*
- *  Handle resources of PCI devices.  If the world were perfect, we could
- *  just allocate all the resource regions and do nothing more.  It isn't.
- *  On the other hand, we cannot just re-allocate all devices, as it would
- *  require us to know lots of host bridge internals.  So we attempt to
- *  keep as much of the original configuration as possible, but tweak it
- *  when it's found to be wrong.
- *
- *  Known BIOS problems we have to work around:
- *	- I/O or memory regions not configured
- *	- regions configured, but not enabled in the command register
- *	- bogus I/O addresses above 64K used
- *	- expansion ROMs left enabled (this may sound harmless, but given
- *	  the fact the PCI specs explicitly allow address decoders to be
- *	  shared between expansion ROMs and other resource regions, it's
- *	  at least dangerous)
- *
- *  Our solution:
- *	(1) Allocate resources for all buses behind PCI-to-PCI bridges.
- *	    This gives us fixed barriers on where we can allocate.
- *	(2) Allocate resources for all enabled devices.  If there is
- *	    a collision, just mark the resource as unallocated. Also
- *	    disable expansion ROMs during this step.
- *	(3) Try to allocate resources for disabled devices.  If the
- *	    resources were assigned correctly, everything goes well,
- *	    if they weren't, they won't disturb allocation of other
- *	    resources.
- *	(4) Assign new addresses to resources which were either
- *	    not configured at all or misconfigured.  If explicitly
- *	    requested by the user, configure expansion ROM address
- *	    as well.
- */
-
-static void pcibios_allocate_bus_resources(struct pci_bus *bus)
-{
-	struct pci_bus *b;
-	int i;
-	struct resource *res, *pr;
-
-	pr_debug("PCI: Allocating bus resources for %04x:%02x...\n",
-		 pci_domain_nr(bus), bus->number);
-
-	pci_bus_for_each_resource(bus, res, i) {
-		if (!res || !res->flags
-		    || res->start > res->end || res->parent)
-			continue;
-		if (bus->parent == NULL)
-			pr = (res->flags & IORESOURCE_IO) ?
-				&ioport_resource : &iomem_resource;
-		else {
-			/* Don't bother with non-root busses when
-			 * re-assigning all resources. We clear the
-			 * resource flags as if they were colliding
-			 * and as such ensure proper re-allocation
-			 * later.
-			 */
-			pr = pci_find_parent_resource(bus->self, res);
-			if (pr == res) {
-				/* this happens when the generic PCI
-				 * code (wrongly) decides that this
-				 * bridge is transparent  -- paulus
-				 */
-				continue;
-			}
-		}
-
-		pr_debug("PCI: %s (bus %d) bridge rsrc %d: %016llx-%016llx ",
-			 bus->self ? pci_name(bus->self) : "PHB",
-			 bus->number, i,
-			 (unsigned long long)res->start,
-			 (unsigned long long)res->end);
-		pr_debug("[0x%x], parent %p (%s)\n",
-			 (unsigned int)res->flags,
-			 pr, (pr && pr->name) ? pr->name : "nil");
-
-		if (pr && !(pr->flags & IORESOURCE_UNSET)) {
-			struct pci_dev *dev = bus->self;
-
-			if (request_resource(pr, res) == 0)
-				continue;
-			/*
-			 * Must be a conflict with an existing entry.
-			 * Move that entry (or entries) under the
-			 * bridge resource and try again.
-			 */
-			if (reparent_resources(pr, res) == 0)
-				continue;
-
-			if (dev && i < PCI_BRIDGE_RESOURCE_NUM &&
-			    pci_claim_bridge_resource(dev,
-						 i + PCI_BRIDGE_RESOURCES) == 0)
-				continue;
-
-		}
-		pr_warn("PCI: Cannot allocate resource region ");
-		pr_cont("%d of PCI bridge %d, will remap\n", i, bus->number);
-		res->start = res->end = 0;
-		res->flags = 0;
-	}
-
-	list_for_each_entry(b, &bus->children, node)
-		pcibios_allocate_bus_resources(b);
-}
-
-static inline void alloc_resource(struct pci_dev *dev, int idx)
-{
-	struct resource *pr, *r = &dev->resource[idx];
-
-	pr_debug("PCI: Allocating %s: Resource %d: %016llx..%016llx [%x]\n",
-		 pci_name(dev), idx,
-		 (unsigned long long)r->start,
-		 (unsigned long long)r->end,
-		 (unsigned int)r->flags);
-
-	pr = pci_find_parent_resource(dev, r);
-	if (!pr || (pr->flags & IORESOURCE_UNSET) ||
-	    request_resource(pr, r) < 0) {
-		pr_warn("PCI: Cannot allocate resource region %d ", idx);
-		pr_cont("of device %s, will remap\n", pci_name(dev));
-		if (pr)
-			pr_debug("PCI:  parent is %p: %016llx-%016llx [%x]\n",
-				 pr,
-				 (unsigned long long)pr->start,
-				 (unsigned long long)pr->end,
-				 (unsigned int)pr->flags);
-		/* We'll assign a new address later */
-		r->flags |= IORESOURCE_UNSET;
-		r->end -= r->start;
-		r->start = 0;
-	}
-}
-
-static void __init pcibios_allocate_resources(int pass)
-{
-	struct pci_dev *dev = NULL;
-	int idx, disabled;
-	u16 command;
-	struct resource *r;
-
-	for_each_pci_dev(dev) {
-		pci_read_config_word(dev, PCI_COMMAND, &command);
-		for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
-			r = &dev->resource[idx];
-			if (r->parent)		/* Already allocated */
-				continue;
-			if (!r->flags || (r->flags & IORESOURCE_UNSET))
-				continue;	/* Not assigned at all */
-			/* We only allocate ROMs on pass 1 just in case they
-			 * have been screwed up by firmware
-			 */
-			if (idx == PCI_ROM_RESOURCE)
-				disabled = 1;
-			if (r->flags & IORESOURCE_IO)
-				disabled = !(command & PCI_COMMAND_IO);
-			else
-				disabled = !(command & PCI_COMMAND_MEMORY);
-			if (pass == disabled)
-				alloc_resource(dev, idx);
-		}
-		if (pass)
-			continue;
-		r = &dev->resource[PCI_ROM_RESOURCE];
-		if (r->flags) {
-			/* Turn the ROM off, leave the resource region,
-			 * but keep it unregistered.
-			 */
-			u32 reg;
-			pci_read_config_dword(dev, dev->rom_base_reg, &reg);
-			if (reg & PCI_ROM_ADDRESS_ENABLE) {
-				pr_debug("PCI: Switching off ROM of %s\n",
-					 pci_name(dev));
-				r->flags &= ~IORESOURCE_ROM_ENABLE;
-				pci_write_config_dword(dev, dev->rom_base_reg,
-						reg & ~PCI_ROM_ADDRESS_ENABLE);
-			}
-		}
-	}
-}
-
-static void __init pcibios_reserve_legacy_regions(struct pci_bus *bus)
-{
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	resource_size_t	offset;
-	struct resource *res, *pres;
-	int i;
-
-	pr_debug("Reserving legacy ranges for domain %04x\n",
-							pci_domain_nr(bus));
-
-	/* Check for IO */
-	if (!(hose->io_resource.flags & IORESOURCE_IO))
-		goto no_io;
-	offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-	res = kzalloc(sizeof(struct resource), GFP_KERNEL);
-	BUG_ON(res == NULL);
-	res->name = "Legacy IO";
-	res->flags = IORESOURCE_IO;
-	res->start = offset;
-	res->end = (offset + 0xfff) & 0xfffffffful;
-	pr_debug("Candidate legacy IO: %pR\n", res);
-	if (request_resource(&hose->io_resource, res)) {
-		pr_debug("PCI %04x:%02x Cannot reserve Legacy IO %pR\n",
-		       pci_domain_nr(bus), bus->number, res);
-		kfree(res);
-	}
-
- no_io:
-	/* Check for memory */
-	offset = hose->pci_mem_offset;
-	pr_debug("hose mem offset: %016llx\n", (unsigned long long)offset);
-	for (i = 0; i < 3; i++) {
-		pres = &hose->mem_resources[i];
-		if (!(pres->flags & IORESOURCE_MEM))
-			continue;
-		pr_debug("hose mem res: %pR\n", pres);
-		if ((pres->start - offset) <= 0xa0000 &&
-		    (pres->end - offset) >= 0xbffff)
-			break;
-	}
-	if (i >= 3)
-		return;
-	res = kzalloc(sizeof(struct resource), GFP_KERNEL);
-	BUG_ON(res == NULL);
-	res->name = "Legacy VGA memory";
-	res->flags = IORESOURCE_MEM;
-	res->start = 0xa0000 + offset;
-	res->end = 0xbffff + offset;
-	pr_debug("Candidate VGA memory: %pR\n", res);
-	if (request_resource(pres, res)) {
-		pr_debug("PCI %04x:%02x Cannot reserve VGA memory %pR\n",
-		       pci_domain_nr(bus), bus->number, res);
-		kfree(res);
-	}
-}
-
-void __init pcibios_resource_survey(void)
-{
-	struct pci_bus *b;
-
-	/* Allocate and assign resources. If we re-assign everything, then
-	 * we skip the allocate phase
-	 */
-	list_for_each_entry(b, &pci_root_buses, node)
-		pcibios_allocate_bus_resources(b);
-
-	pcibios_allocate_resources(0);
-	pcibios_allocate_resources(1);
-
-	/* Before we start assigning unassigned resource, we try to reserve
-	 * the low IO area and the VGA memory area if they intersect the
-	 * bus available resources to avoid allocating things on top of them
-	 */
-	list_for_each_entry(b, &pci_root_buses, node)
-		pcibios_reserve_legacy_regions(b);
-
-	/* Now proceed to assigning things that were left unassigned */
-	pr_debug("PCI: Assigning unassigned resources...\n");
-	pci_assign_unassigned_resources();
-}
-
-static void pcibios_setup_phb_resources(struct pci_controller *hose,
-					struct list_head *resources)
-{
-	unsigned long io_offset;
-	struct resource *res;
-	int i;
-
-	/* Hookup PHB IO resource */
-	res = &hose->io_resource;
-
-	/* Fixup IO space offset */
-	io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
-	res->start = (res->start + io_offset) & 0xffffffffu;
-	res->end = (res->end + io_offset) & 0xffffffffu;
-
-	if (!res->flags) {
-		pr_warn("PCI: I/O resource not set for host ");
-		pr_cont("bridge %pOF (domain %d)\n",
-			hose->dn, hose->global_number);
-		/* Workaround for lack of IO resource only on 32-bit */
-		res->start = (unsigned long)hose->io_base_virt - isa_io_base;
-		res->end = res->start + IO_SPACE_LIMIT;
-		res->flags = IORESOURCE_IO;
-	}
-	pci_add_resource_offset(resources, res,
-		(__force resource_size_t)(hose->io_base_virt - _IO_BASE));
-
-	pr_debug("PCI: PHB IO resource    = %016llx-%016llx [%lx]\n",
-		 (unsigned long long)res->start,
-		 (unsigned long long)res->end,
-		 (unsigned long)res->flags);
-
-	/* Hookup PHB Memory resources */
-	for (i = 0; i < 3; ++i) {
-		res = &hose->mem_resources[i];
-		if (!res->flags) {
-			if (i > 0)
-				continue;
-			pr_err("PCI: Memory resource 0 not set for ");
-			pr_cont("host bridge %pOF (domain %d)\n",
-				hose->dn, hose->global_number);
-
-			/* Workaround for lack of MEM resource only on 32-bit */
-			res->start = hose->pci_mem_offset;
-			res->end = (resource_size_t)-1LL;
-			res->flags = IORESOURCE_MEM;
-
-		}
-		pci_add_resource_offset(resources, res, hose->pci_mem_offset);
-
-		pr_debug("PCI: PHB MEM resource %d = %016llx-%016llx [%lx]\n",
-			i, (unsigned long long)res->start,
-			(unsigned long long)res->end,
-			(unsigned long)res->flags);
-	}
-
-	pr_debug("PCI: PHB MEM offset     = %016llx\n",
-		 (unsigned long long)hose->pci_mem_offset);
-	pr_debug("PCI: PHB IO  offset     = %08lx\n",
-		 (unsigned long)hose->io_base_virt - _IO_BASE);
-}
-
-static void pcibios_scan_phb(struct pci_controller *hose)
-{
-	LIST_HEAD(resources);
-	struct pci_bus *bus;
-	struct device_node *node = hose->dn;
-
-	pr_debug("PCI: Scanning PHB %pOF\n", node);
-
-	pcibios_setup_phb_resources(hose, &resources);
-
-	bus = pci_scan_root_bus(hose->parent, hose->first_busno,
-				hose->ops, hose, &resources);
-	if (bus == NULL) {
-		pr_err("Failed to create bus for PCI domain %04x\n",
-		       hose->global_number);
-		pci_free_resource_list(&resources);
-		return;
-	}
-	bus->busn_res.start = hose->first_busno;
-	hose->bus = bus;
-
-	hose->last_busno = bus->busn_res.end;
-}
-
-static int __init pcibios_init(void)
-{
-	struct pci_controller *hose, *tmp;
-	int next_busno = 0;
-
-	pr_info("PCI: Probing PCI hardware\n");
-
-	/* Scan all of the recorded PCI controllers.  */
-	list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
-		hose->last_busno = 0xff;
-		pcibios_scan_phb(hose);
-		if (next_busno <= hose->last_busno)
-			next_busno = hose->last_busno + 1;
-	}
-	pci_bus_count = next_busno;
-
-	/* Call common code to handle resource allocation */
-	pcibios_resource_survey();
-	list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
-		if (hose->bus)
-			pci_bus_add_devices(hose->bus);
-	}
-
-	return 0;
-}
-
-subsys_initcall(pcibios_init);
-
 static struct pci_controller *pci_bus_to_hose(int bus)
 {
 	struct pci_controller *hose, *tmp;
-- 
cgit v1.2.3


From d4a37561c8894a59a8546256425a757a27b01b3a Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:09 +0530
Subject: microblaze/PCI: Remove unused PCI Indirect ops

Remove unused variants of PCI indirect handling.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-9-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/include/asm/pci-bridge.h |  34 -------
 arch/microblaze/pci/Makefile             |   2 +-
 arch/microblaze/pci/indirect_pci.c       | 158 -------------------------------
 arch/microblaze/pci/xilinx_pci.c         |   6 --
 4 files changed, 1 insertion(+), 199 deletions(-)
 delete mode 100644 arch/microblaze/pci/indirect_pci.c

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h
index 170369dcdbff..cd9ae71348a4 100644
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -32,8 +32,6 @@ struct pci_controller {
 	int first_busno;
 	int last_busno;
 
-	int self_busno;
-
 	void __iomem *io_base_virt;
 	resource_size_t io_base_phys;
 
@@ -42,34 +40,6 @@ struct pci_controller {
 	 */
 	resource_size_t pci_mem_offset;
 
-	struct pci_ops *ops;
-	unsigned int __iomem *cfg_addr;
-	void __iomem *cfg_data;
-
-	/*
-	 * Used for variants of PCI indirect handling and possible quirks:
-	 *  SET_CFG_TYPE - used on 4xx or any PHB that does explicit type0/1
-	 *  EXT_REG - provides access to PCI-e extended registers
-	 *  SURPRESS_PRIMARY_BUS - we suppress the setting of PCI_PRIMARY_BUS
-	 *   on Freescale PCI-e controllers since they used the PCI_PRIMARY_BUS
-	 *   to determine which bus number to match on when generating type0
-	 *   config cycles
-	 *  NO_PCIE_LINK - the Freescale PCI-e controllers have issues with
-	 *   hanging if we don't have link and try to do config cycles to
-	 *   anything but the PHB.  Only allow talking to the PHB if this is
-	 *   set.
-	 *  BIG_ENDIAN - cfg_addr is a big endian register
-	 *  BROKEN_MRM - the 440EPx/GRx chips have an errata that causes hangs
-	 *   on the PLB4.  Effectively disable MRM commands by setting this.
-	 */
-#define INDIRECT_TYPE_SET_CFG_TYPE		0x00000001
-#define INDIRECT_TYPE_EXT_REG		0x00000002
-#define INDIRECT_TYPE_SURPRESS_PRIMARY_BUS	0x00000004
-#define INDIRECT_TYPE_NO_PCIE_LINK		0x00000008
-#define INDIRECT_TYPE_BIG_ENDIAN		0x00000010
-#define INDIRECT_TYPE_BROKEN_MRM		0x00000020
-	u32 indirect_type;
-
 	/* Currently, we limit ourselves to 1 IO range and 3 mem
 	 * ranges since the common pci_bus structure can't handle more
 	 */
@@ -91,9 +61,5 @@ static inline int isa_vaddr_is_ioport(void __iomem *address)
 }
 #endif /* CONFIG_PCI */
 
-extern void setup_indirect_pci(struct pci_controller *hose,
-			       resource_size_t cfg_addr,
-			       resource_size_t cfg_data, u32 flags);
-
 #endif	/* __KERNEL__ */
 #endif	/* _ASM_MICROBLAZE_PCI_BRIDGE_H */
diff --git a/arch/microblaze/pci/Makefile b/arch/microblaze/pci/Makefile
index 0251c20e1d62..3cbdf2529b95 100644
--- a/arch/microblaze/pci/Makefile
+++ b/arch/microblaze/pci/Makefile
@@ -3,5 +3,5 @@
 # Makefile
 #
 
-obj-$(CONFIG_PCI)		+= pci-common.o indirect_pci.o iomap.o
+obj-$(CONFIG_PCI)		+= pci-common.o iomap.o
 obj-$(CONFIG_PCI_XILINX)	+= xilinx_pci.o
diff --git a/arch/microblaze/pci/indirect_pci.c b/arch/microblaze/pci/indirect_pci.c
deleted file mode 100644
index 1caf7d3e0eef..000000000000
--- a/arch/microblaze/pci/indirect_pci.c
+++ /dev/null
@@ -1,158 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Support for indirect PCI bridges.
- *
- * Copyright (C) 1998 Gabriel Paubert.
- */
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/string.h>
-#include <linux/init.h>
-
-#include <linux/io.h>
-#include <asm/pci-bridge.h>
-
-static int
-indirect_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
-		     int len, u32 *val)
-{
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	volatile void __iomem *cfg_data;
-	u8 cfg_type = 0;
-	u32 bus_no, reg;
-
-	if (hose->indirect_type & INDIRECT_TYPE_NO_PCIE_LINK) {
-		if (bus->number != hose->first_busno)
-			return PCIBIOS_DEVICE_NOT_FOUND;
-		if (devfn != 0)
-			return PCIBIOS_DEVICE_NOT_FOUND;
-	}
-
-	if (hose->indirect_type & INDIRECT_TYPE_SET_CFG_TYPE)
-		if (bus->number != hose->first_busno)
-			cfg_type = 1;
-
-	bus_no = (bus->number == hose->first_busno) ?
-			hose->self_busno : bus->number;
-
-	if (hose->indirect_type & INDIRECT_TYPE_EXT_REG)
-		reg = ((offset & 0xf00) << 16) | (offset & 0xfc);
-	else
-		reg = offset & 0xfc; /* Only 3 bits for function */
-
-	if (hose->indirect_type & INDIRECT_TYPE_BIG_ENDIAN)
-		out_be32(hose->cfg_addr, (0x80000000 | (bus_no << 16) |
-			 (devfn << 8) | reg | cfg_type));
-	else
-		out_le32(hose->cfg_addr, (0x80000000 | (bus_no << 16) |
-			 (devfn << 8) | reg | cfg_type));
-
-	/*
-	 * Note: the caller has already checked that offset is
-	 * suitably aligned and that len is 1, 2 or 4.
-	 */
-	cfg_data = hose->cfg_data + (offset & 3); /* Only 3 bits for function */
-	switch (len) {
-	case 1:
-		*val = in_8(cfg_data);
-		break;
-	case 2:
-		*val = in_le16(cfg_data);
-		break;
-	default:
-		*val = in_le32(cfg_data);
-		break;
-	}
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static int
-indirect_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
-		      int len, u32 val)
-{
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	volatile void __iomem *cfg_data;
-	u8 cfg_type = 0;
-	u32 bus_no, reg;
-
-	if (hose->indirect_type & INDIRECT_TYPE_NO_PCIE_LINK) {
-		if (bus->number != hose->first_busno)
-			return PCIBIOS_DEVICE_NOT_FOUND;
-		if (devfn != 0)
-			return PCIBIOS_DEVICE_NOT_FOUND;
-	}
-
-	if (hose->indirect_type & INDIRECT_TYPE_SET_CFG_TYPE)
-		if (bus->number != hose->first_busno)
-			cfg_type = 1;
-
-	bus_no = (bus->number == hose->first_busno) ?
-			hose->self_busno : bus->number;
-
-	if (hose->indirect_type & INDIRECT_TYPE_EXT_REG)
-		reg = ((offset & 0xf00) << 16) | (offset & 0xfc);
-	else
-		reg = offset & 0xfc;
-
-	if (hose->indirect_type & INDIRECT_TYPE_BIG_ENDIAN)
-		out_be32(hose->cfg_addr, (0x80000000 | (bus_no << 16) |
-			 (devfn << 8) | reg | cfg_type));
-	else
-		out_le32(hose->cfg_addr, (0x80000000 | (bus_no << 16) |
-			 (devfn << 8) | reg | cfg_type));
-
-	/* suppress setting of PCI_PRIMARY_BUS */
-	if (hose->indirect_type & INDIRECT_TYPE_SURPRESS_PRIMARY_BUS)
-		if ((offset == PCI_PRIMARY_BUS) &&
-			(bus->number == hose->first_busno))
-			val &= 0xffffff00;
-
-	/* Workaround for PCI_28 Errata in 440EPx/GRx */
-	if ((hose->indirect_type & INDIRECT_TYPE_BROKEN_MRM) &&
-			offset == PCI_CACHE_LINE_SIZE) {
-		val = 0;
-	}
-
-	/*
-	 * Note: the caller has already checked that offset is
-	 * suitably aligned and that len is 1, 2 or 4.
-	 */
-	cfg_data = hose->cfg_data + (offset & 3);
-	switch (len) {
-	case 1:
-		out_8(cfg_data, val);
-		break;
-	case 2:
-		out_le16(cfg_data, val);
-		break;
-	default:
-		out_le32(cfg_data, val);
-		break;
-	}
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops indirect_pci_ops = {
-	.read = indirect_read_config,
-	.write = indirect_write_config,
-};
-
-void __init
-setup_indirect_pci(struct pci_controller *hose,
-		   resource_size_t cfg_addr,
-		   resource_size_t cfg_data, u32 flags)
-{
-	resource_size_t base = cfg_addr & PAGE_MASK;
-	void __iomem *mbase;
-
-	mbase = ioremap(base, PAGE_SIZE);
-	hose->cfg_addr = mbase + (cfg_addr & ~PAGE_MASK);
-	if ((cfg_data & PAGE_MASK) != base)
-		mbase = ioremap(cfg_data & PAGE_MASK, PAGE_SIZE);
-	hose->cfg_data = mbase + (cfg_data & ~PAGE_MASK);
-	hose->ops = &indirect_pci_ops;
-	hose->indirect_type = flags;
-}
diff --git a/arch/microblaze/pci/xilinx_pci.c b/arch/microblaze/pci/xilinx_pci.c
index 3fa16e3c8e48..5dc41822b2d7 100644
--- a/arch/microblaze/pci/xilinx_pci.c
+++ b/arch/microblaze/pci/xilinx_pci.c
@@ -83,7 +83,6 @@ xilinx_pci_exclude_device(struct pci_controller *hose, u_char bus, u8 devfn)
  */
 void __init xilinx_pci_init(void)
 {
-	struct pci_controller *hose;
 	struct resource r;
 	void __iomem *pci_reg;
 	struct device_node *pci_node;
@@ -97,11 +96,6 @@ void __init xilinx_pci_init(void)
 		return;
 	}
 
-	/* Setup config space */
-	setup_indirect_pci(hose, r.start + XPLB_PCI_ADDR,
-			   r.start + XPLB_PCI_DATA,
-			   INDIRECT_TYPE_SET_CFG_TYPE);
-
 	/* Set the max bus number to 255, and bus/subbus no's to 0 */
 	pci_reg = of_iomap(pci_node, 0);
 	WARN_ON(!pci_reg);
-- 
cgit v1.2.3


From 68c9858bf823514ead6cbff3f1d66a9998893af8 Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:10 +0530
Subject: microblaze/PCI: Remove unused pci_address_to_pio() conversion of CPU
 address to I/O port

Remove unused pci_address_to_pio() conversion of CPU
address to I/O port function.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-10-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/pci/pci-common.c | 23 -----------------------
 1 file changed, 23 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 085e673d388b..555281c389ff 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -68,29 +68,6 @@ int pcibios_vaddr_is_ioport(void __iomem *address)
 	return ret;
 }
 
-unsigned long pci_address_to_pio(phys_addr_t address)
-{
-	struct pci_controller *hose;
-	resource_size_t size;
-	unsigned long ret = ~0;
-
-	spin_lock(&hose_spinlock);
-	list_for_each_entry(hose, &hose_list, list_node) {
-		size = pcibios_io_size(hose);
-		if (address >= hose->io_base_phys &&
-		    address < (hose->io_base_phys + size)) {
-			unsigned long base =
-				(unsigned long)hose->io_base_virt - _IO_BASE;
-			ret = base + (address - hose->io_base_phys);
-			break;
-		}
-	}
-	spin_unlock(&hose_spinlock);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(pci_address_to_pio);
-
 /*
  * Platform support for /proc/bus/pci/X/Y mmap()s.
  */
-- 
cgit v1.2.3


From 3604ef61f18ae024b4bf2686361965469f9ff805 Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:11 +0530
Subject: microblaze/PCI: Remove unused sys_pciconfig_iobase() and et al
 declaration

Removed unused code which provides information of various
I/O regions.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-11-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/include/asm/pci-bridge.h |  8 ------
 arch/microblaze/include/asm/pci.h        |  7 -----
 arch/microblaze/pci/pci-common.c         | 44 --------------------------------
 3 files changed, 59 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h
index cd9ae71348a4..9c89ae4cdc00 100644
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -29,17 +29,9 @@ struct pci_controller {
 	struct list_head list_node;
 	struct device *parent;
 
-	int first_busno;
-	int last_busno;
-
 	void __iomem *io_base_virt;
 	resource_size_t io_base_phys;
 
-	/* Some machines (PReP) have a non 1:1 mapping of
-	 * the PCI memory space in the CPU bus space
-	 */
-	resource_size_t pci_mem_offset;
-
 	/* Currently, we limit ourselves to 1 IO range and 3 mem
 	 * ranges since the common pci_bus structure can't handle more
 	 */
diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
index 6da7523d9613..52d572dd41ba 100644
--- a/arch/microblaze/include/asm/pci.h
+++ b/arch/microblaze/include/asm/pci.h
@@ -21,13 +21,6 @@
 #define PCIBIOS_MIN_IO		0x1000
 #define PCIBIOS_MIN_MEM		0x10000000
 
-/* Values for the `which' argument to sys_pciconfig_iobase syscall.  */
-#define IOBASE_BRIDGE_NUMBER	0
-#define IOBASE_MEMORY		1
-#define IOBASE_IO		2
-#define IOBASE_ISA_IO		3
-#define IOBASE_ISA_MEM		4
-
 /*
  * Set this to 1 if you want the kernel to re-assign all PCI
  * bus numbers (don't do that on ppc64 yet !)
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 555281c389ff..a1de8532a04e 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -38,9 +38,6 @@
 static DEFINE_SPINLOCK(hose_spinlock);
 LIST_HEAD(hose_list);
 
-/* ISA Memory physical address */
-resource_size_t isa_mem_base;
-
 unsigned long isa_io_base;
 EXPORT_SYMBOL(isa_io_base);
 
@@ -92,44 +89,3 @@ int pci_proc_domain(struct pci_bus *bus)
 {
 	return pci_domain_nr(bus);
 }
-
-static struct pci_controller *pci_bus_to_hose(int bus)
-{
-	struct pci_controller *hose, *tmp;
-
-	list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
-		if (bus >= hose->first_busno && bus <= hose->last_busno)
-			return hose;
-	return NULL;
-}
-
-/* Provide information on locations of various I/O regions in physical
- * memory.  Do this on a per-card basis so that we choose the right
- * root bridge.
- * Note that the returned IO or memory base is a physical address
- */
-
-long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
-{
-	struct pci_controller *hose;
-	long result = -EOPNOTSUPP;
-
-	hose = pci_bus_to_hose(bus);
-	if (!hose)
-		return -ENODEV;
-
-	switch (which) {
-	case IOBASE_BRIDGE_NUMBER:
-		return (long)hose->first_busno;
-	case IOBASE_MEMORY:
-		return (long)hose->pci_mem_offset;
-	case IOBASE_IO:
-		return (long)hose->io_base_phys;
-	case IOBASE_ISA_IO:
-		return (long)isa_io_base;
-	case IOBASE_ISA_MEM:
-		return (long)isa_mem_base;
-	}
-
-	return result;
-}
-- 
cgit v1.2.3


From cb0199c70ee1065c9c9f121e3508833f3ee11cd1 Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:12 +0530
Subject: microblaze/PCI: Remove unused pci_iobar_pfn() and et al declarations

Remove unused pci_iobar_pfn() and et al declarations.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-12-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/include/asm/pci-bridge.h |  2 --
 arch/microblaze/include/asm/pci.h        |  3 ---
 arch/microblaze/pci/pci-common.c         | 19 -------------------
 3 files changed, 24 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h
index 9c89ae4cdc00..5db2c6605720 100644
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -27,10 +27,8 @@ struct pci_controller {
 	struct pci_bus *bus;
 	struct device_node *dn;
 	struct list_head list_node;
-	struct device *parent;
 
 	void __iomem *io_base_virt;
-	resource_size_t io_base_phys;
 
 	/* Currently, we limit ourselves to 1 IO range and 3 mem
 	 * ranges since the common pci_bus structure can't handle more
diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
index 52d572dd41ba..a75bf3b19035 100644
--- a/arch/microblaze/include/asm/pci.h
+++ b/arch/microblaze/include/asm/pci.h
@@ -32,12 +32,9 @@ extern int pci_domain_nr(struct pci_bus *bus);
 /* Decide whether to display the domain number in /proc */
 extern int pci_proc_domain(struct pci_bus *bus);
 
-struct vm_area_struct;
-
 /* Tell PCI code what kind of PCI resource mappings we support */
 #define HAVE_PCI_MMAP			1
 #define ARCH_GENERIC_PCI_MMAP_RESOURCE	1
-#define arch_can_pci_mmap_io()		1
 
 struct file;
 
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index a1de8532a04e..e5c2051c7e67 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -65,25 +65,6 @@ int pcibios_vaddr_is_ioport(void __iomem *address)
 	return ret;
 }
 
-/*
- * Platform support for /proc/bus/pci/X/Y mmap()s.
- */
-
-int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma)
-{
-	struct pci_controller *hose = pci_bus_to_host(pdev->bus);
-	resource_size_t ioaddr = pci_resource_start(pdev, bar);
-
-	if (!hose)
-		return -EINVAL;		/* should never happen */
-
-	/* Convert to an offset within this PCI controller */
-	ioaddr -= (unsigned long)hose->io_base_virt - _IO_BASE;
-
-	vma->vm_pgoff += (ioaddr + hose->io_base_phys) >> PAGE_SHIFT;
-	return 0;
-}
-
 /* Display the domain number in /proc */
 int pci_proc_domain(struct pci_bus *bus)
 {
-- 
cgit v1.2.3


From 41604bfdc9f3f73d15bc19b85e474227c1f86856 Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:13 +0530
Subject: microblaze/PCI: Remove support for Xilinx PCI host bridge

This patch removes support for the Xilinx PCI host
bridge IPcore.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-13-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/Kconfig                  |   8 ---
 arch/microblaze/configs/mmu_defconfig    |   1 -
 arch/microblaze/include/asm/pci-bridge.h |   6 --
 arch/microblaze/include/asm/pci.h        |   5 --
 arch/microblaze/pci/Makefile             |   1 -
 arch/microblaze/pci/xilinx_pci.c         | 105 -------------------------------
 6 files changed, 126 deletions(-)
 delete mode 100644 arch/microblaze/pci/xilinx_pci.c

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 4ebb56d6d959..cc88af6fa7a4 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -215,11 +215,3 @@ config MB_MANAGER
 	  Say N here unless you know what you are doing.
 
 endmenu
-
-menu "Bus Options"
-
-config PCI_XILINX
-	bool "Xilinx PCI host bridge support"
-	depends on PCI
-
-endmenu
diff --git a/arch/microblaze/configs/mmu_defconfig b/arch/microblaze/configs/mmu_defconfig
index 8150daf04a76..756feb9369a6 100644
--- a/arch/microblaze/configs/mmu_defconfig
+++ b/arch/microblaze/configs/mmu_defconfig
@@ -19,7 +19,6 @@ CONFIG_HZ_100=y
 CONFIG_CMDLINE_BOOL=y
 CONFIG_CMDLINE_FORCE=y
 CONFIG_HIGHMEM=y
-CONFIG_PCI_XILINX=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h
index 5db2c6605720..be5f504bead4 100644
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -25,7 +25,6 @@ static inline int pcibios_vaddr_is_ioport(void __iomem *address)
  */
 struct pci_controller {
 	struct pci_bus *bus;
-	struct device_node *dn;
 	struct list_head list_node;
 
 	void __iomem *io_base_virt;
@@ -37,11 +36,6 @@ struct pci_controller {
 };
 
 #ifdef CONFIG_PCI
-static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus)
-{
-	return bus->sysdata;
-}
-
 static inline int isa_vaddr_is_ioport(void __iomem *address)
 {
 	/* No specific ISA handling on ppc32 at this stage, it
diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
index a75bf3b19035..91f1f71c266a 100644
--- a/arch/microblaze/include/asm/pci.h
+++ b/arch/microblaze/include/asm/pci.h
@@ -38,12 +38,7 @@ extern int pci_proc_domain(struct pci_bus *bus);
 
 struct file;
 
-/* This part of code was originally in xilinx-pci.h */
-#ifdef CONFIG_PCI_XILINX
-extern void __init xilinx_pci_init(void);
-#else
 static inline void __init xilinx_pci_init(void) { return; }
-#endif
 
 #endif	/* __KERNEL__ */
 #endif /* __ASM_MICROBLAZE_PCI_H */
diff --git a/arch/microblaze/pci/Makefile b/arch/microblaze/pci/Makefile
index 3cbdf2529b95..293b416c3d8e 100644
--- a/arch/microblaze/pci/Makefile
+++ b/arch/microblaze/pci/Makefile
@@ -4,4 +4,3 @@
 #
 
 obj-$(CONFIG_PCI)		+= pci-common.o iomap.o
-obj-$(CONFIG_PCI_XILINX)	+= xilinx_pci.o
diff --git a/arch/microblaze/pci/xilinx_pci.c b/arch/microblaze/pci/xilinx_pci.c
deleted file mode 100644
index 5dc41822b2d7..000000000000
--- a/arch/microblaze/pci/xilinx_pci.c
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * PCI support for Xilinx plbv46_pci soft-core which can be used on
- * Xilinx Virtex ML410 / ML510 boards.
- *
- * Copyright 2009 Roderick Colenbrander
- * Copyright 2009 Secret Lab Technologies Ltd.
- *
- * The pci bridge fixup code was copied from ppc4xx_pci.c and was written
- * by Benjamin Herrenschmidt.
- * Copyright 2007 Ben. Herrenschmidt <benh@kernel.crashing.org>, IBM Corp.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- */
-
-#include <linux/ioport.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/pci.h>
-#include <linux/io.h>
-
-#define XPLB_PCI_ADDR 0x10c
-#define XPLB_PCI_DATA 0x110
-#define XPLB_PCI_BUS  0x114
-
-#define PCI_HOST_ENABLE_CMD (PCI_COMMAND_SERR | PCI_COMMAND_PARITY | \
-				PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY)
-
-static const struct of_device_id xilinx_pci_match[] = {
-	{ .compatible = "xlnx,plbv46-pci-1.03.a", },
-	{}
-};
-
-/**
- * xilinx_pci_fixup_bridge - Block Xilinx PHB configuration.
- */
-static void xilinx_pci_fixup_bridge(struct pci_dev *dev)
-{
-	struct pci_controller *hose;
-	int i;
-
-	if (dev->devfn || dev->bus->self)
-		return;
-
-	hose = pci_bus_to_host(dev->bus);
-	if (!hose)
-		return;
-
-	if (!of_match_node(xilinx_pci_match, hose->dn))
-		return;
-
-	/* Hide the PCI host BARs from the kernel as their content doesn't
-	 * fit well in the resource management
-	 */
-	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
-		dev->resource[i].start = 0;
-		dev->resource[i].end = 0;
-		dev->resource[i].flags = 0;
-	}
-
-	dev_info(&dev->dev, "Hiding Xilinx plb-pci host bridge resources %s\n",
-		 pci_name(dev));
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, xilinx_pci_fixup_bridge);
-
-#ifdef DEBUG
-/**
- * xilinx_pci_exclude_device - Don't do config access for non-root bus
- *
- * This is a hack.  Config access to any bus other than bus 0 does not
- * currently work on the ML510 so we prevent it here.
- */
-static int
-xilinx_pci_exclude_device(struct pci_controller *hose, u_char bus, u8 devfn)
-{
-	return (bus != 0);
-}
-#endif
-
-/**
- * xilinx_pci_init - Find and register a Xilinx PCI host bridge
- */
-void __init xilinx_pci_init(void)
-{
-	struct resource r;
-	void __iomem *pci_reg;
-	struct device_node *pci_node;
-
-	pci_node = of_find_matching_node(NULL, xilinx_pci_match);
-	if (!pci_node)
-		return;
-
-	if (of_address_to_resource(pci_node, 0, &r)) {
-		pr_err("xilinx-pci: cannot resolve base address\n");
-		return;
-	}
-
-	/* Set the max bus number to 255, and bus/subbus no's to 0 */
-	pci_reg = of_iomap(pci_node, 0);
-	WARN_ON(!pci_reg);
-	out_be32(pci_reg + XPLB_PCI_BUS, 0x000000ff);
-	iounmap(pci_reg);
-
-}
-- 
cgit v1.2.3


From 5cfe469c2654c3a4dda8504b1209abdd8b379e95 Mon Sep 17 00:00:00 2001
From: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Date: Tue, 25 Oct 2022 12:22:14 +0530
Subject: microblaze/PCI: Moving PCI iounmap and dependent code

Moving PCI iounmap function and et all dependent code
to iomap.c.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-14-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
---
 arch/microblaze/pci/Makefile     |  2 +-
 arch/microblaze/pci/iomap.c      | 36 ++++++++++++++++++++
 arch/microblaze/pci/pci-common.c | 72 ----------------------------------------
 3 files changed, 37 insertions(+), 73 deletions(-)
 delete mode 100644 arch/microblaze/pci/pci-common.c

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/pci/Makefile b/arch/microblaze/pci/Makefile
index 293b416c3d8e..f8267d20e067 100644
--- a/arch/microblaze/pci/Makefile
+++ b/arch/microblaze/pci/Makefile
@@ -3,4 +3,4 @@
 # Makefile
 #
 
-obj-$(CONFIG_PCI)		+= pci-common.o iomap.o
+obj-$(CONFIG_PCI)		+= iomap.o
diff --git a/arch/microblaze/pci/iomap.c b/arch/microblaze/pci/iomap.c
index bde74af4c1cd..b2ee8ace9b6e 100644
--- a/arch/microblaze/pci/iomap.c
+++ b/arch/microblaze/pci/iomap.c
@@ -11,6 +11,42 @@
 #include <linux/io.h>
 #include <asm/pci-bridge.h>
 
+static DEFINE_SPINLOCK(hose_spinlock);
+LIST_HEAD(hose_list);
+
+unsigned long isa_io_base;
+EXPORT_SYMBOL(isa_io_base);
+
+static resource_size_t pcibios_io_size(const struct pci_controller *hose)
+{
+	return resource_size(&hose->io_resource);
+}
+
+int pcibios_vaddr_is_ioport(void __iomem *address)
+{
+	int ret = 0;
+	struct pci_controller *hose;
+	resource_size_t size;
+
+	spin_lock(&hose_spinlock);
+	list_for_each_entry(hose, &hose_list, list_node) {
+		size = pcibios_io_size(hose);
+		if (address >= hose->io_base_virt &&
+		    address < (hose->io_base_virt + size)) {
+			ret = 1;
+			break;
+		}
+	}
+	spin_unlock(&hose_spinlock);
+	return ret;
+}
+
+/* Display the domain number in /proc */
+int pci_proc_domain(struct pci_bus *bus)
+{
+	return pci_domain_nr(bus);
+}
+
 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
 {
 	if (isa_vaddr_is_ioport(addr))
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
deleted file mode 100644
index e5c2051c7e67..000000000000
--- a/arch/microblaze/pci/pci-common.c
+++ /dev/null
@@ -1,72 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Contains common pci routines for ALL ppc platform
- * (based on pci_32.c and pci_64.c)
- *
- * Port for PPC64 David Engebretsen, IBM Corp.
- * Contains common pci routines for ppc64 platform, pSeries and iSeries brands.
- *
- * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM
- *   Rework, based on alpha PCI code.
- *
- * Common pmac/prep/chrp pci routines. -- Cort
- */
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/memblock.h>
-#include <linux/mm.h>
-#include <linux/shmem_fs.h>
-#include <linux/list.h>
-#include <linux/syscalls.h>
-#include <linux/irq.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/of_pci.h>
-#include <linux/export.h>
-
-#include <asm/processor.h>
-#include <linux/io.h>
-#include <asm/pci-bridge.h>
-#include <asm/byteorder.h>
-
-static DEFINE_SPINLOCK(hose_spinlock);
-LIST_HEAD(hose_list);
-
-unsigned long isa_io_base;
-EXPORT_SYMBOL(isa_io_base);
-
-static resource_size_t pcibios_io_size(const struct pci_controller *hose)
-{
-	return resource_size(&hose->io_resource);
-}
-
-int pcibios_vaddr_is_ioport(void __iomem *address)
-{
-	int ret = 0;
-	struct pci_controller *hose;
-	resource_size_t size;
-
-	spin_lock(&hose_spinlock);
-	list_for_each_entry(hose, &hose_list, list_node) {
-		size = pcibios_io_size(hose);
-		if (address >= hose->io_base_virt &&
-		    address < (hose->io_base_virt + size)) {
-			ret = 1;
-			break;
-		}
-	}
-	spin_unlock(&hose_spinlock);
-	return ret;
-}
-
-/* Display the domain number in /proc */
-int pci_proc_domain(struct pci_bus *bus)
-{
-	return pci_domain_nr(bus);
-}
-- 
cgit v1.2.3