[DO NOT MERGE v5 10/37] sh: Common PCI Framework driver support.

Yoshinori Sato
2023-12-05T10:13:26Z

Add New OF based PCI Host driver.
This driver conflicts some point in legacy PCI driver.
To resolve the conflict, I made some changes to the legacy driver.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
arch/sh/drivers/pci/pci.c | 6 ------
arch/sh/include/asm/io.h | 6 ++++++
arch/sh/include/asm/pci.h | 4 ++++
arch/sh/kernel/iomap.c | 24 ++++++++++++++++++++++++
4 files changed, 34 insertions(+), 6 deletions(-)

diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index a3903304f33f..61a19c2c9014 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -286,12 +286,6 @@ void __iomem *__pci_ioport_map(struct pci_dev *dev,
return (void __iomem *)(chan->io_map_base + port);
}

-void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
-{
- iounmap(addr);
-}
-EXPORT_SYMBOL(pci_iounmap);
-
#endif /* CONFIG_GENERIC_IOMAP */

EXPORT_SYMBOL(PCIBIOS_MIN_IO);
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index ac521f287fa5..efea1bd0a681 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -20,6 +20,7 @@
#include <asm/page.h>
#include <linux/pgtable.h>
#include <asm-generic/iomap.h>
+#include <linux/ioport.h>

#define __IO_PREFIX generic
#include <asm/io_generic.h>
@@ -317,4 +318,9 @@ unsigned long long poke_real_address_q(unsigned long long addr,
int valid_phys_addr_range(phys_addr_t addr, size_t size);
int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);

+#if defined(CONFIG_PCI) && !defined(CONFIG_GENERIC_IOMAP)
+#define pci_remap_iospace pci_remap_iospace
+int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr);
+#endif
+
#endif /* __ASM_SH_IO_H */
diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index 54c30126ea17..92b3bd604319 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -2,6 +2,7 @@
#ifndef __ASM_SH_PCI_H
#define __ASM_SH_PCI_H

+#ifndef CONFIG_SH_DEVICE_TREE
/* Can be used to override the logic in pci_scan_bus for skipping
already-configured bus numbers - to be used for buggy BIOSes
or architectures with incomplete PCI setup by the loader */
@@ -88,4 +89,7 @@ static inline int pci_proc_domain(struct pci_bus *bus)
return hose->need_domain_info;
}

+#else /* CONFIG_SH_DEVICE_TREE */
+#include <asm-generic/pci.h>
+#endif
#endif /* __ASM_SH_PCI_H */
diff --git a/arch/sh/kernel/iomap.c b/arch/sh/kernel/iomap.c
index 0a0dff4e66de..ec68ce4e4a17 100644
--- a/arch/sh/kernel/iomap.c
+++ b/arch/sh/kernel/iomap.c
@@ -160,3 +160,27 @@ void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
mmio_outsl(addr, src, count);
}
EXPORT_SYMBOL(iowrite32_rep);
+
+#if defined(CONFIG_PCI) && !defined(CONFIG_GENERIC_IOMAP)
+void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
+{
+ iounmap(addr);
+}
+EXPORT_SYMBOL(pci_iounmap);
+
+int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr)
+{
+ unsigned long vaddr = res->start;
+
+ if (!(res->flags & IORESOURCE_IO))
+ return -EINVAL;
+
+ if (res->end > IO_SPACE_LIMIT)
+ return -EINVAL;
+
+ __set_io_port_base(phys_addr);
+ return ioremap_page_range(vaddr, vaddr + resource_size(res), phys_addr,
+ pgprot_device(PAGE_KERNEL));
+}
+EXPORT_SYMBOL(pci_remap_iospace);
+#endif
--
2.39.2