crypto: ccp - Add platform device support for arm64
Add support for the CCP on arm64 as a platform device.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c
index 2c78161..fa1ab10 100644
--- a/drivers/crypto/ccp/ccp-dev.c
+++ b/drivers/crypto/ccp/ccp-dev.c
@@ -20,7 +20,9 @@
#include <linux/delay.h>
#include <linux/hw_random.h>
#include <linux/cpu.h>
+#ifdef CONFIG_X86
#include <asm/cpu_device_id.h>
+#endif
#include <linux/ccp.h>
#include "ccp-dev.h"
@@ -360,6 +362,12 @@
/* Build queue interrupt mask (two interrupts per queue) */
qim |= cmd_q->int_ok | cmd_q->int_err;
+#ifdef CONFIG_ARM64
+ /* For arm64 set the recommended queue cache settings */
+ iowrite32(CACHE_WB_NO_ALLOC, ccp->io_regs + CMD_Q_CACHE_BASE +
+ (CMD_Q_CACHE_INC * i));
+#endif
+
dev_dbg(dev, "queue #%u available\n", i);
}
if (ccp->cmd_q_count == 0) {
@@ -558,12 +566,15 @@
}
#endif
+#ifdef CONFIG_X86
static const struct x86_cpu_id ccp_support[] = {
{ X86_VENDOR_AMD, 22, },
};
+#endif
static int __init ccp_mod_init(void)
{
+#ifdef CONFIG_X86
struct cpuinfo_x86 *cpuinfo = &boot_cpu_data;
int ret;
@@ -589,12 +600,30 @@
break;
}
+#endif
+
+#ifdef CONFIG_ARM64
+ int ret;
+
+ ret = ccp_platform_init();
+ if (ret)
+ return ret;
+
+ /* Don't leave the driver loaded if init failed */
+ if (!ccp_get_device()) {
+ ccp_platform_exit();
+ return -ENODEV;
+ }
+
+ return 0;
+#endif
return -ENODEV;
}
static void __exit ccp_mod_exit(void)
{
+#ifdef CONFIG_X86
struct cpuinfo_x86 *cpuinfo = &boot_cpu_data;
switch (cpuinfo->x86) {
@@ -602,6 +631,11 @@
ccp_pci_exit();
break;
}
+#endif
+
+#ifdef CONFIG_ARM64
+ ccp_platform_exit();
+#endif
}
module_init(ccp_mod_init);