firmware: tegra: bpmp: Use iosys-map helpers

The shared memory used for inter-processor communication between the CPU
and the BPMP can reside either in system memory or in I/O memory. Use
the iosys-map helpers to abstract these differences away.

Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 15 insertions, 2 deletions

diff --git a/include/soc/tegra/bpmp.h b/include/soc/tegra/bpmp.h
index f2604e99af09..5842e38bb288 100644
--- a/include/soc/tegra/bpmp.h
+++ b/include/soc/tegra/bpmp.h
@@ -6,6 +6,7 @@
 #ifndef __SOC_TEGRA_BPMP_H
 #define __SOC_TEGRA_BPMP_H
 
+#include <linux/iosys-map.h>
 #include <linux/mailbox_client.h>
 #include <linux/pm_domain.h>
 #include <linux/reset-controller.h>
@@ -36,10 +37,22 @@ struct tegra_bpmp_mb_data {
 	u8 data[MSG_DATA_MIN_SZ];
 } __packed;
 
+#define tegra_bpmp_mb_read(dst, mb, size) \
+	iosys_map_memcpy_from(dst, mb, offsetof(struct tegra_bpmp_mb_data, data), size)
+
+#define tegra_bpmp_mb_write(mb, src, size) \
+	iosys_map_memcpy_to(mb, offsetof(struct tegra_bpmp_mb_data, data), src, size)
+
+#define tegra_bpmp_mb_read_field(mb, field) \
+	iosys_map_rd_field(mb, 0, struct tegra_bpmp_mb_data, field)
+
+#define tegra_bpmp_mb_write_field(mb, field, value) \
+	iosys_map_wr_field(mb, 0, struct tegra_bpmp_mb_data, field, value)
+
 struct tegra_bpmp_channel {
 	struct tegra_bpmp *bpmp;
-	struct tegra_bpmp_mb_data *ib;
-	struct tegra_bpmp_mb_data *ob;
+	struct iosys_map ib;
+	struct iosys_map ob;
 	struct completion completion;
 	struct tegra_ivc *ivc;
 	unsigned int index;