Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 68b9753f authored by Jack Steiner's avatar Jack Steiner Committed by Tony Luck
Browse files

[IA64-SGI] - New SN hardware support - cpu_relax 



Add a few missing calls to "hint @pause".

Signed-off-by: default avatarJack Steiner <steiner@sgi.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 7e95b9d6

arch/ia64/sn/kernel/bte.c

+1 −0
Original line number Diff line number Diff line
@@ -215,6 +215,7 @@ bte_result_t bte_copy(u64 src, u64 dest, u64 len, u64 mode, void *notification) 
	}



	while ((transfer_stat = *bte->most_rcnt_na) == BTE_WORD_BUSY) {

		cpu_relax();

		if (ia64_get_itc() > itc_end) {

			BTE_PRINTK(("BTE timeout nasid 0x%x bte%d IBLS = 0x%lx na 0x%lx\n",

				NASID_GET(bte->bte_base_addr), bte->bte_num,

arch/ia64/sn/kernel/huberror.c

+1 −1
Original line number Diff line number Diff line
@@ -76,7 +76,7 @@ void hubiio_crb_free(struct hubdev_info *hubdev_info, int crbnum) 
	 */

	REMOTE_HUB_S(hubdev_info->hdi_nasid, IIO_ICDR, (IIO_ICDR_PND | crbnum));

	while (REMOTE_HUB_L(hubdev_info->hdi_nasid, IIO_ICDR) & IIO_ICDR_PND)

		udelay(1);

		cpu_relax();



}

arch/ia64/sn/pci/pcibr/pcibr_dma.c

+2 −1
Original line number Diff line number Diff line
@@ -317,7 +317,8 @@ void sn_dma_flush(uint64_t addr) 
		*(volatile uint32_t *)(p->sfdl_force_int_addr) = 1;



		/* wait for the interrupt to come back. */

		while (*(p->sfdl_flush_addr) != 0x10f) ;

		while (*(p->sfdl_flush_addr) != 0x10f)

			cpu_relax();



		/* okay, everything is synched up. */

		spin_unlock_irqrestore((spinlock_t *)&p->sfdl_flush_lock, flags);

include/asm-ia64/sn/sn_sal.h

+2 −1
Original line number Diff line number Diff line
@@ -749,7 +749,8 @@ ia64_sn_power_down(void) 
{

	struct ia64_sal_retval ret_stuff;

	SAL_CALL(ret_stuff, SN_SAL_SYSTEM_POWER_DOWN, 0, 0, 0, 0, 0, 0, 0);

	while(1);

	while(1)

		cpu_relax();

	/* never returns */

}