diff options
Diffstat (limited to 'configs/platform-rpi/patches/linux-4.4/0002-irq-bcm2836-Add-SMP-support-for-the-2836.patch')
-rw-r--r-- | configs/platform-rpi/patches/linux-4.4/0002-irq-bcm2836-Add-SMP-support-for-the-2836.patch | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/configs/platform-rpi/patches/linux-4.4/0002-irq-bcm2836-Add-SMP-support-for-the-2836.patch b/configs/platform-rpi/patches/linux-4.4/0002-irq-bcm2836-Add-SMP-support-for-the-2836.patch deleted file mode 100644 index 2e25c68..0000000 --- a/configs/platform-rpi/patches/linux-4.4/0002-irq-bcm2836-Add-SMP-support-for-the-2836.patch +++ /dev/null @@ -1,75 +0,0 @@ -From: Andrea Merello <andrea.merello@gmail.com> -Date: Sun, 3 May 2015 01:03:11 +0200 -Subject: [PATCH] irq: bcm2836: Add SMP support for the 2836 - -The firmware sets the secondaries spinning waiting for a non-NULL -value to show up in the last IPI mailbox. - -The original SMP port from the downstream tree was done by Andrea, and -Eric cleaned it up/rewrote it a few times from there. - -Signed-off-by: Andrea Merello <andrea.merello@gmail.com> -Signed-off-by: Eric Anholt <eric@anholt.net> -Signed-off-by: Alexander Aring <alex.aring@gmail.com> ---- - drivers/irqchip/irq-bcm2836.c | 27 +++++++++++++++++++++++++-- - 1 file changed, 25 insertions(+), 2 deletions(-) - -diff --git a/drivers/irqchip/irq-bcm2836.c b/drivers/irqchip/irq-bcm2836.c -index 6ec125ef3607..c5ef4dfb5bb0 100644 ---- a/drivers/irqchip/irq-bcm2836.c -+++ b/drivers/irqchip/irq-bcm2836.c -@@ -53,14 +53,16 @@ - /* Same status bits as above, but for FIQ. */ - #define LOCAL_FIQ_PENDING0 0x070 - /* -- * Mailbox0 write-to-set bits. There are 16 mailboxes, 4 per CPU, and -+ * Mailbox write-to-set bits. There are 16 mailboxes, 4 per CPU, and - * these bits are organized by mailbox number and then CPU number. We - * use mailbox 0 for IPIs. The mailbox's interrupt is raised while - * any bit is set. - */ - #define LOCAL_MAILBOX0_SET0 0x080 --/* Mailbox0 write-to-clear bits. */ -+#define LOCAL_MAILBOX3_SET0 0x08c -+/* Mailbox write-to-clear bits. */ - #define LOCAL_MAILBOX0_CLR0 0x0c0 -+#define LOCAL_MAILBOX3_CLR0 0x0cc - - #define LOCAL_IRQ_CNTPSIRQ 0 - #define LOCAL_IRQ_CNTPNSIRQ 1 -@@ -226,6 +228,26 @@ static const struct irq_domain_ops bcm2836_arm_irqchip_intc_ops = { - .xlate = irq_domain_xlate_onecell - }; - -+#ifdef CONFIG_SMP -+int __init bcm2836_smp_boot_secondary(unsigned int cpu, -+ struct task_struct *idle) -+{ -+ unsigned long secondary_startup_phys = -+ (unsigned long)virt_to_phys((void *)secondary_startup); -+ -+ dsb(); -+ writel(secondary_startup_phys, -+ intc.base + LOCAL_MAILBOX3_SET0 + 16 * cpu); -+ -+ return 0; -+} -+ -+static const struct smp_operations bcm2836_smp_ops __initconst = { -+ .smp_boot_secondary = bcm2836_smp_boot_secondary, -+}; -+ -+#endif -+ - static void - bcm2836_arm_irqchip_smp_init(void) - { -@@ -237,6 +259,7 @@ bcm2836_arm_irqchip_smp_init(void) - register_cpu_notifier(&bcm2836_arm_irqchip_cpu_notifier); - - set_smp_cross_call(bcm2836_arm_irqchip_send_ipi); -+ smp_set_ops(&bcm2836_smp_ops); - #endif - } - |