tile: remove support for TILE64

This chip is no longer being actively developed for (it was superceded
by the TILEPro64 in 2008), and in any case the existing compiler and
toolchain in the community do not support it.  It's unlikely that the
kernel works with TILE64 at this point as the configuration has not been
tested in years.  The support is also awkward as it requires maintaining
a significant number of ifdefs.  So, just remove it altogether.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

1 files changed, 1 insertions, 43 deletions

diff --git a/arch/tile/kernel/process.c b/arch/tile/kernel/process.c
index 44cdc4aa59e8..16ed58948757 100644
--- a/arch/tile/kernel/process.c
+++ b/arch/tile/kernel/process.c
@@ -187,16 +187,8 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
 	memset(&p->thread.dma_async_tlb, 0, sizeof(struct async_tlb));
 #endif
 
-#if CHIP_HAS_SN_PROC()
-	/* Likewise, the new thread is not running static processor code. */
-	p->thread.sn_proc_running = 0;
-	memset(&p->thread.sn_async_tlb, 0, sizeof(struct async_tlb));
-#endif
-
-#if CHIP_HAS_PROC_STATUS_SPR()
 	/* New thread has its miscellaneous processor state bits clear. */
 	p->thread.proc_status = 0;
-#endif
 
 #ifdef CONFIG_HARDWALL
 	/* New thread does not own any networks. */
@@ -378,15 +370,11 @@ static void save_arch_state(struct thread_struct *t)
 	t->system_save[2] = __insn_mfspr(SPR_SYSTEM_SAVE_0_2);
 	t->system_save[3] = __insn_mfspr(SPR_SYSTEM_SAVE_0_3);
 	t->intctrl_0 = __insn_mfspr(SPR_INTCTRL_0_STATUS);
-#if CHIP_HAS_PROC_STATUS_SPR()
 	t->proc_status = __insn_mfspr(SPR_PROC_STATUS);
-#endif
 #if !CHIP_HAS_FIXED_INTVEC_BASE()
 	t->interrupt_vector_base = __insn_mfspr(SPR_INTERRUPT_VECTOR_BASE_0);
 #endif
-#if CHIP_HAS_TILE_RTF_HWM()
 	t->tile_rtf_hwm = __insn_mfspr(SPR_TILE_RTF_HWM);
-#endif
 #if CHIP_HAS_DSTREAM_PF()
 	t->dstream_pf = __insn_mfspr(SPR_DSTREAM_PF);
 #endif
@@ -407,15 +395,11 @@ static void restore_arch_state(const struct thread_struct *t)
 	__insn_mtspr(SPR_SYSTEM_SAVE_0_2, t->system_save[2]);
 	__insn_mtspr(SPR_SYSTEM_SAVE_0_3, t->system_save[3]);
 	__insn_mtspr(SPR_INTCTRL_0_STATUS, t->intctrl_0);
-#if CHIP_HAS_PROC_STATUS_SPR()
 	__insn_mtspr(SPR_PROC_STATUS, t->proc_status);
-#endif
 #if !CHIP_HAS_FIXED_INTVEC_BASE()
 	__insn_mtspr(SPR_INTERRUPT_VECTOR_BASE_0, t->interrupt_vector_base);
 #endif
-#if CHIP_HAS_TILE_RTF_HWM()
 	__insn_mtspr(SPR_TILE_RTF_HWM, t->tile_rtf_hwm);
-#endif
 #if CHIP_HAS_DSTREAM_PF()
 	__insn_mtspr(SPR_DSTREAM_PF, t->dstream_pf);
 #endif
@@ -424,26 +408,11 @@ static void restore_arch_state(const struct thread_struct *t)
 
 void _prepare_arch_switch(struct task_struct *next)
 {
-#if CHIP_HAS_SN_PROC()
-	int snctl;
-#endif
 #if CHIP_HAS_TILE_DMA()
 	struct tile_dma_state *dma = &current->thread.tile_dma_state;
 	if (dma->enabled)
 		save_tile_dma_state(dma);
 #endif
-#if CHIP_HAS_SN_PROC()
-	/*
-	 * Suspend the static network processor if it was running.
-	 * We do not suspend the fabric itself, just like we don't
-	 * try to suspend the UDN.
-	 */
-	snctl = __insn_mfspr(SPR_SNCTL);
-	current->thread.sn_proc_running =
-		(snctl & SPR_SNCTL__FRZPROC_MASK) == 0;
-	if (current->thread.sn_proc_running)
-		__insn_mtspr(SPR_SNCTL, snctl | SPR_SNCTL__FRZPROC_MASK);
-#endif
 }
 
 
@@ -471,17 +440,6 @@ struct task_struct *__sched _switch_to(struct task_struct *prev,
 	/* Restore other arch state. */
 	restore_arch_state(&next->thread);
 
-#if CHIP_HAS_SN_PROC()
-	/*
-	 * Restart static network processor in the new process
-	 * if it was running before.
-	 */
-	if (next->thread.sn_proc_running) {
-		int snctl = __insn_mfspr(SPR_SNCTL);
-		__insn_mtspr(SPR_SNCTL, snctl & ~SPR_SNCTL__FRZPROC_MASK);
-	}
-#endif
-
 #ifdef CONFIG_HARDWALL
 	/* Enable or disable access to the network registers appropriately. */
 	hardwall_switch_tasks(prev, next);
@@ -523,7 +481,7 @@ int do_work_pending(struct pt_regs *regs, u32 thread_info_flags)
 		schedule();
 		return 1;
 	}
-#if CHIP_HAS_TILE_DMA() || CHIP_HAS_SN_PROC()
+#if CHIP_HAS_TILE_DMA()
 	if (thread_info_flags & _TIF_ASYNC_TLB) {
 		do_async_page_fault(regs);
 		return 1;