x86: apl: Fix save/restore of ITSS priorities
The FSP-S changes the ITSS priorities. The code that tries to save it
before running FSP-S and restore it afterwards does not work as U-Boot
relocates in between the save and restore. This means that the driver
data saved before relocation is lost and the new driver just sees zeroes.
Fix this by allocating space in the relocated memory for the ITSS data.
Save it there and access it from the driver after relocation.
This fixes interrupt handling on coral.
Also drop the log_msg_ret() in irq_first_device_type() since this function
can be called speculatively in places where we are not sure if there is
an interrupt controller of that type. The resulting log errors are
confusing when there is no error.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
diff --git a/arch/x86/include/asm/itss.h b/arch/x86/include/asm/itss.h
index c75d8fe..f7d3240 100644
--- a/arch/x86/include/asm/itss.h
+++ b/arch/x86/include/asm/itss.h
@@ -16,7 +16,7 @@
#define ITSS_MAX_IRQ 119
#define IRQS_PER_IPC 32
-#define NUM_IPC_REGS ((ITSS_MAX_IRQ + IRQS_PER_IPC - 1) / IRQS_PER_IPC)
+#define NUM_IPC_REGS DIV_ROUND_UP(ITSS_MAX_IRQ, IRQS_PER_IPC)
/* Max PXRC registers in ITSS */
#define MAX_PXRC_CONFIG (PCR_ITSS_PIRQH_ROUT - PCR_ITSS_PIRQA_ROUT + 1)