[PATCH:libpciaccess 3/3] Support more pci functions on NetBSD.
Thomas Klausner
wiz at NetBSD.org
Sat Jun 29 11:49:54 PDT 2013
>From Chuck Silvers <chuq at chuq.com> based on openbsd_pci.c.
Signed-off-by: Thomas Klausner <wiz at NetBSD.org>
---
src/netbsd_pci.c | 325 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 325 insertions(+)
diff --git a/src/netbsd_pci.c b/src/netbsd_pci.c
index 295e927..b3f7f2d 100644
--- a/src/netbsd_pci.c
+++ b/src/netbsd_pci.c
@@ -525,6 +525,322 @@ pci_device_netbsd_read_rom(struct pci_device *dev, void *buffer)
return 0;
}
+#if defined(__i386__) || defined(__amd64__)
+#include <machine/sysarch.h>
+
+/*
+ * Functions to provide access to x86 programmed I/O instructions.
+ *
+ * The in[bwl]() and out[bwl]() functions are split into two varieties: one to
+ * use a small, constant, 8-bit port number, and another to use a large or
+ * variable port number. The former can be compiled as a smaller instruction.
+ */
+
+
+#ifdef __OPTIMIZE__
+
+#define __use_immediate_port(port) \
+ (__builtin_constant_p((port)) && (port) < 0x100)
+
+#else
+
+#define __use_immediate_port(port) 0
+
+#endif
+
+
+#define inb(port) \
+ (/* CONSTCOND */ __use_immediate_port(port) ? __inbc(port) : __inb(port))
+
+static __inline u_int8_t
+__inbc(unsigned port)
+{
+ u_int8_t data;
+ __asm __volatile("inb %w1,%0" : "=a" (data) : "id" (port));
+ return data;
+}
+
+static __inline u_int8_t
+__inb(unsigned port)
+{
+ u_int8_t data;
+ __asm __volatile("inb %w1,%0" : "=a" (data) : "d" (port));
+ return data;
+}
+
+static __inline void
+insb(unsigned port, void *addr, int cnt)
+{
+ void *dummy1;
+ int dummy2;
+ __asm __volatile("cld\n\trepne\n\tinsb" :
+ "=D" (dummy1), "=c" (dummy2) :
+ "d" (port), "0" (addr), "1" (cnt) :
+ "memory");
+}
+
+#define inw(port) \
+ (/* CONSTCOND */ __use_immediate_port(port) ? __inwc(port) : __inw(port))
+
+static __inline u_int16_t
+__inwc(unsigned port)
+{
+ u_int16_t data;
+ __asm __volatile("inw %w1,%0" : "=a" (data) : "id" (port));
+ return data;
+}
+
+static __inline u_int16_t
+__inw(unsigned port)
+{
+ u_int16_t data;
+ __asm __volatile("inw %w1,%0" : "=a" (data) : "d" (port));
+ return data;
+}
+
+static __inline void
+insw(unsigned port, void *addr, int cnt)
+{
+ void *dummy1;
+ int dummy2;
+ __asm __volatile("cld\n\trepne\n\tinsw" :
+ "=D" (dummy1), "=c" (dummy2) :
+ "d" (port), "0" (addr), "1" (cnt) :
+ "memory");
+}
+
+#define inl(port) \
+ (/* CONSTCOND */ __use_immediate_port(port) ? __inlc(port) : __inl(port))
+
+static __inline u_int32_t
+__inlc(unsigned port)
+{
+ u_int32_t data;
+ __asm __volatile("inl %w1,%0" : "=a" (data) : "id" (port));
+ return data;
+}
+
+static __inline u_int32_t
+__inl(unsigned port)
+{
+ u_int32_t data;
+ __asm __volatile("inl %w1,%0" : "=a" (data) : "d" (port));
+ return data;
+}
+
+static __inline void
+insl(unsigned port, void *addr, int cnt)
+{
+ void *dummy1;
+ int dummy2;
+ __asm __volatile("cld\n\trepne\n\tinsl" :
+ "=D" (dummy1), "=c" (dummy2) :
+ "d" (port), "0" (addr), "1" (cnt) :
+ "memory");
+}
+
+#define outb(port, data) \
+ (/* CONSTCOND */__use_immediate_port(port) ? __outbc(port, data) : \
+ __outb(port, data))
+
+static __inline void
+__outbc(unsigned port, u_int8_t data)
+{
+ __asm __volatile("outb %0,%w1" : : "a" (data), "id" (port));
+}
+
+static __inline void
+__outb(unsigned port, u_int8_t data)
+{
+ __asm __volatile("outb %0,%w1" : : "a" (data), "d" (port));
+}
+
+static __inline void
+outsb(unsigned port, const void *addr, int cnt)
+{
+ void *dummy1;
+ int dummy2;
+ __asm __volatile("cld\n\trepne\n\toutsb" :
+ "=S" (dummy1), "=c" (dummy2) :
+ "d" (port), "0" (addr), "1" (cnt));
+}
+
+#define outw(port, data) \
+ (/* CONSTCOND */ __use_immediate_port(port) ? __outwc(port, data) : \
+ __outw(port, data))
+
+static __inline void
+__outwc(unsigned port, u_int16_t data)
+{
+ __asm __volatile("outw %0,%w1" : : "a" (data), "id" (port));
+}
+
+static __inline void
+__outw(unsigned port, u_int16_t data)
+{
+ __asm __volatile("outw %0,%w1" : : "a" (data), "d" (port));
+}
+
+static __inline void
+outsw(unsigned port, const void *addr, int cnt)
+{
+ void *dummy1;
+ int dummy2;
+ __asm __volatile("cld\n\trepne\n\toutsw" :
+ "=S" (dummy1), "=c" (dummy2) :
+ "d" (port), "0" (addr), "1" (cnt));
+}
+
+#define outl(port, data) \
+ (/* CONSTCOND */ __use_immediate_port(port) ? __outlc(port, data) : \
+ __outl(port, data))
+
+static __inline void
+__outlc(unsigned port, u_int32_t data)
+{
+ __asm __volatile("outl %0,%w1" : : "a" (data), "id" (port));
+}
+
+static __inline void
+__outl(unsigned port, u_int32_t data)
+{
+ __asm __volatile("outl %0,%w1" : : "a" (data), "d" (port));
+}
+
+static __inline void
+outsl(unsigned port, const void *addr, int cnt)
+{
+ void *dummy1;
+ int dummy2;
+ __asm __volatile("cld\n\trepne\n\toutsl" :
+ "=S" (dummy1), "=c" (dummy2) :
+ "d" (port), "0" (addr), "1" (cnt));
+}
+
+#endif
+
+
+static struct pci_io_handle *
+pci_device_netbsd_open_legacy_io(struct pci_io_handle *ret,
+ struct pci_device *dev, pciaddr_t base, pciaddr_t size)
+{
+#if defined(__i386__)
+ struct i386_iopl_args ia;
+
+ ia.iopl = 1;
+ if (sysarch(I386_IOPL, &ia))
+ return NULL;
+
+ ret->base = base;
+ ret->size = size;
+ return ret;
+#elif defined(__amd64__)
+ struct x86_64_iopl_args ia;
+
+ ia.iopl = 1;
+ if (sysarch(X86_64_IOPL, &ia))
+ return NULL;
+
+ ret->base = base;
+ ret->size = size;
+ return ret;
+#else
+ return NULL;
+#endif
+}
+
+static uint32_t
+pci_device_netbsd_read32(struct pci_io_handle *handle, uint32_t reg)
+{
+#if defined(__i386__) || defined(__amd64__)
+ return inl(handle->base + reg);
+#else
+ return *(uint32_t *)((uintptr_t)handle->memory + reg);
+#endif
+}
+
+static uint16_t
+pci_device_netbsd_read16(struct pci_io_handle *handle, uint32_t reg)
+{
+#if defined(__i386__) || defined(__amd64__)
+ return inw(handle->base + reg);
+#else
+ return *(uint16_t *)((uintptr_t)handle->memory + reg);
+#endif
+}
+
+static uint8_t
+pci_device_netbsd_read8(struct pci_io_handle *handle, uint32_t reg)
+{
+#if defined(__i386__) || defined(__amd64__)
+ return inb(handle->base + reg);
+#else
+ return *(uint8_t *)((uintptr_t)handle->memory + reg);
+#endif
+}
+
+static void
+pci_device_netbsd_write32(struct pci_io_handle *handle, uint32_t reg,
+ uint32_t data)
+{
+#if defined(__i386__) || defined(__amd64__)
+ outl(handle->base + reg, data);
+#else
+ *(uint16_t *)((uintptr_t)handle->memory + reg) = data;
+#endif
+}
+
+static void
+pci_device_netbsd_write16(struct pci_io_handle *handle, uint32_t reg,
+ uint16_t data)
+{
+#if defined(__i386__) || defined(__amd64__)
+ outw(handle->base + reg, data);
+#else
+ *(uint8_t *)((uintptr_t)handle->memory + reg) = data;
+#endif
+}
+
+static void
+pci_device_netbsd_write8(struct pci_io_handle *handle, uint32_t reg,
+ uint8_t data)
+{
+#if defined(__i386__) || defined(__amd64__)
+ outb(handle->base + reg, data);
+#else
+ *(uint32_t *)((uintptr_t)handle->memory + reg) = data;
+#endif
+}
+
+static int
+pci_device_netbsd_map_legacy(struct pci_device *dev, pciaddr_t base,
+ pciaddr_t size, unsigned map_flags, void **addr)
+{
+ struct pci_device_mapping map;
+ int err;
+
+ map.base = base;
+ map.size = size;
+ map.flags = map_flags;
+ map.memory = NULL;
+ err = pci_device_netbsd_map_range(dev, &map);
+ *addr = map.memory;
+
+ return err;
+}
+
+static int
+pci_device_netbsd_unmap_legacy(struct pci_device *dev, void *addr,
+ pciaddr_t size)
+{
+ struct pci_device_mapping map;
+
+ map.memory = addr;
+ map.size = size;
+ map.flags = 0;
+ return pci_device_netbsd_unmap_range(dev, &map);
+}
+
static const struct pci_system_methods netbsd_pci_methods = {
.destroy = pci_system_netbsd_destroy,
.destroy_device = NULL,
@@ -540,6 +856,15 @@ static const struct pci_system_methods netbsd_pci_methods = {
#else
.boot_vga = NULL,
#endif
+ .open_legacy_io = pci_device_netbsd_open_legacy_io,
+ .read32 = pci_device_netbsd_read32,
+ .read16 = pci_device_netbsd_read16,
+ .read8 = pci_device_netbsd_read8,
+ .write32 = pci_device_netbsd_write32,
+ .write16 = pci_device_netbsd_write16,
+ .write8 = pci_device_netbsd_write8,
+ .map_legacy = pci_device_netbsd_map_legacy,
+ .unmap_legacy = pci_device_netbsd_unmap_legacy,
};
int
--
1.8.3.1
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