@@ -123,8 +123,7 @@ BTFIXUPDEF_CALL(void, mmu_release_scsi_sgl, struct device *, struct scatterlist
* Second mapping is for device visible address, or "bus" address.
* The bus address is returned at '*pba'.
*
- * These functions seem distinct, but are hard to split. On sun4c,
- * at least for now, 'a' is equal to bus address, and retured in *pba.
+ * These functions seem distinct, but are hard to split.
* On sun4m, page attributes depend on the CPU type, so we have to
* know if we are mapping RAM or I/O, so it has to be an additional argument
* to a separate mapping function for CPU visible mappings.
@@ -19,7 +19,7 @@ struct Sun_Machine_Models {
* ---------------
* 7 4 3 0
*
- * The ARCH field determines the architecture line (sun4, sun4c, etc).
+ * The ARCH field determines the architecture line (sun4m, etc).
* The MACH field determines the machine make within that architecture.
*/
@@ -304,8 +304,7 @@ BTFIXUPDEF_CALL(pte_t *, pte_offset_kernel, pmd_t *, unsigned long)
#define pte_offset_kernel(dir,addr) BTFIXUP_CALL(pte_offset_kernel)(dir,addr)
/*
- * This shortcut works on sun4m (and sun4d) because the nocache area is static,
- * and sun4c is guaranteed to have no highmem anyway.
+ * This shortcut works on sun4m (and sun4d) because the nocache area is static.
*/
#define pte_offset_map(d, a) pte_offset_kernel(d,a)
#define pte_unmap(pte) do{}while(0)
@@ -367,7 +366,6 @@ static inline pte_t pgoff_to_pte(unsigned long pgoff)
/*
* This is made a constant because mm/fremap.c required a constant.
- * Note that layout of these bits is different between sun4c.c and srmmu.c.
*/
#define PTE_FILE_MAX_BITS 24
@@ -471,10 +469,8 @@ static inline int io_remap_pfn_range(struct vm_area_struct *vma,
#endif /* !(__ASSEMBLY__) */
#define VMALLOC_START _AC(0xfe600000,UL)
-/* XXX Alter this when I get around to fixing sun4c - Anton */
#define VMALLOC_END _AC(0xffc00000,UL)
-
/* We provide our own get_unmapped_area to cope with VA holes for userland */
#define HAVE_ARCH_UNMAPPED_AREA
@@ -381,11 +381,6 @@ static int sbus_map_sg(struct device *dev, struct scatterlist *sg, int n,
enum dma_data_direction dir, struct dma_attrs *attrs)
{
mmu_get_scsi_sgl(dev, sg, n);
-
- /*
- * XXX sparc64 can return a partial length here. sun4c should do this
- * but it currently panics if it can't fulfill the request - Anton
- */
return n;
}
@@ -78,7 +78,7 @@ void handler_irq(unsigned int pil, struct pt_regs *regs);
/* Dave Redman (djhr@tadpole.co.uk)
* changed these to function pointers.. it saves cycles and will allow
* the irq dependencies to be split into different files at a later date
- * sun4c_irq.c, sun4m_irq.c etc so we could reduce the kernel size.
+ * sun4m_irq.c etc so we could reduce the kernel size.
* Jakub Jelinek (jj@sunsite.mff.cuni.cz)
* Changed these to btfixup entities... It saves cycles :)
*/
@@ -799,7 +799,7 @@ static void kill_prom_timer(void)
prom_limit0 = prom_timers->limit0;
prom_limit1 = prom_timers->limit1;
- /* Just as in sun4c/sun4m PROM uses timer which ticks at IRQ 14.
+ /* Just as in sun4c PROM uses timer which ticks at IRQ 14.
* We turn both off here just to be paranoid.
*/
prom_timers->limit0 = 0;
@@ -235,10 +235,6 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
retry:
down_read(&mm->mmap_sem);
- /*
- * The kernel referencing a bad kernel pointer can lock up
- * a sun4c machine completely, so we must attempt recovery.
- */
if(!from_user && address >= PAGE_OFFSET)
goto bad_area;
@@ -289,9 +289,8 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
* check_pgt_cache
*
* This is called at the end of unmapping of VMA (zap_page_range),
- * to rescan the page cache for architecture specific things,
- * presumably something like sun4/sun4c PMEGs. Most architectures
- * define check_pgt_cache empty.
+ * to rescan the page cache for architecture specific things.
+ * Most architectures define check_pgt_cache empty.
*
* We simply copy the 2.4 implementation for now.
*/
@@ -647,8 +647,7 @@ static void srmmu_unmapiorange(unsigned long virt_addr, unsigned int len)
* pool. As a side effect we are putting a little too much pressure
* on the gfp() subsystem. This setup also makes the logic of the
* iommu mapping code a lot easier as we can transparently handle
- * mappings on the kernel stack without any special code as we did
- * need on the sun4c.
+ * mappings on the kernel stack without any special code.
*/
struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node)
{
I left some around, like the ones in the openprom headers, since we need to think about which pieces of those datastructures and code we can completely toss now. Signed-off-by: David S. Miller <davem@davemloft.net> --- arch/sparc/include/asm/dma.h | 3 +-- arch/sparc/include/asm/machines.h | 2 +- arch/sparc/include/asm/pgtable_32.h | 6 +----- arch/sparc/kernel/ioport.c | 5 ----- arch/sparc/kernel/irq.h | 2 +- arch/sparc/kernel/irq_64.c | 2 +- arch/sparc/mm/fault_32.c | 4 ---- arch/sparc/mm/init_32.c | 5 ++--- arch/sparc/mm/srmmu.c | 3 +-- 9 files changed, 8 insertions(+), 24 deletions(-)