MFC r257648, r257649, r257660:

  Begin reducing code duplication in arm pmap.c and pmap-v6.c by factoring
  out common code related to mapping device memory into a new devmap.c file.

  Remove the growing duplication of code that used pmap_devmap_find_pa() and
  then did some math with the returned results to generate a virtual address,
  and likewise in reverse to get a physical address.  Now there are a pair
  of functions, arm_devmap_vtop() and arm_devmap_ptov(), to do that.  The
  bus_space_map() implementations are rewritten in terms of these.

  Move remaining code and data related to static device mapping into the
  new devmap.[ch] files.  Emphasize the MD nature of these things by using
  the prefix arm_devmap_ on the function and type names (already a few of
  these things found their way into MI code, hopefully it will be harder to
  do by accident in the future).

2 files changed, 6 insertions, 4 deletions

diff --git a/sys/arm/at91/at91.c b/sys/arm/at91/at91.c
index a3f9556..cceed8a 100644
--- a/sys/arm/at91/at91.c
+++ b/sys/arm/at91/at91.c
@@ -42,6 +42,7 @@ __FBSDID("$FreeBSD$");
 
 #define	_ARM32_BUS_DMA_PRIVATE
 #include <machine/bus.h>
+#include <machine/devmap.h>
 #include <machine/intr.h>
 
 #include <arm/at91/at91var.h>
@@ -52,7 +53,7 @@ static struct at91_softc *at91_softc;
 
 static void at91_eoi(void *);
 
-extern const struct pmap_devmap at91_devmap[];
+extern const struct arm_devmap_entry at91_devmap[];
 
 uint32_t at91_master_clock;
 
@@ -258,7 +259,7 @@ static int
 at91_attach(device_t dev)
 {
 	struct at91_softc *sc = device_get_softc(dev);
-	const struct pmap_devmap *pdevmap;
+	const struct arm_devmap_entry *pdevmap;
 	int i;
 
 	at91_softc = sc;
diff --git a/sys/arm/at91/at91_machdep.c b/sys/arm/at91/at91_machdep.c
index f4a9316..f7c21f9 100644
--- a/sys/arm/at91/at91_machdep.c
+++ b/sys/arm/at91/at91_machdep.c
@@ -77,6 +77,7 @@ __FBSDID("$FreeBSD$");
 #include <vm/vm_object.h>
 #include <vm/vm_page.h>
 #include <vm/vm_map.h>
+#include <machine/devmap.h>
 #include <machine/vmparam.h>
 #include <machine/pcb.h>
 #include <machine/undefined.h>
@@ -128,7 +129,7 @@ struct pv_addr abtstack;
 struct pv_addr kernelstack;
 
 /* Static device mappings. */
-const struct pmap_devmap at91_devmap[] = {
+const struct arm_devmap_entry at91_devmap[] = {
 	/*
 	 * Map the on-board devices VA == PA so that we can access them
 	 * with the MMU on or off.
@@ -566,7 +567,7 @@ initarm(struct arm_boot_params *abp)
 		    VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
 	}
 
-	pmap_devmap_bootstrap(l1pagetable, at91_devmap);
+	arm_devmap_bootstrap(l1pagetable, at91_devmap);
 	cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL * 2)) | DOMAIN_CLIENT);
 	setttb(kernel_l1pt.pv_pa);
 	cpu_tlb_flushID();