1 files changed, 116 insertions, 0 deletions
diff --git a/snd-alpx-dkms/snd-alpx/alpx_proc.c b/snd-alpx-dkms/snd-alpx/alpx_proc.c
new file mode 100644
index 0000000..65d9daa
--- /dev/null
+++ b/snd-alpx-dkms/snd-alpx/alpx_proc.c
@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+*  Support for Digigram AlpX PCI-e boards
+*
+*  Copyright (c) 2024 Digigram Digital (info@digigram.com)
+*/
+
+#include "alpx_proc.h"
+
+#if defined(CONFIG_ALPX_WITH_PROC_LOG)
+int alpx_proc_log_dump(struct alpx_device *alpx_dev)
+{
+    static unsigned char log_buffer[ALP_PROC_LOG_LENGTH];
+	unsigned char logged_word = 0;
+	unsigned int addr = 0;
+	//unsigned int idx = 0;
+	struct alpx_device zero_base;
+	zero_base.base = 0;
+	
+	
+	dev_dbg( alpx_dev->dev,"%s(): uBlaze Log (%d):", __func__, ALP_PROC_LOG_LENGTH);
+	
+	for (addr = 0; addr < ALP_PROC_LOG_LENGTH ; addr += sizeof (u32)) {
+#if 0
+		dev_dbg( alpx_dev->dev,"%s() : log reg: %p + 0x%x => %p\n", __func__,
+			alpx_dev->base,
+			ALP_PROC_LOG_BASE + addr,
+			ALPX_AREA(alpx_dev, ALP, PROC_LOG) + addr);
+#endif
+ 		logged_word = readl(ALPX_AREA(alpx_dev, ALP, PROC_LOG) + addr);
+		*(unsigned int*)&log_buffer[addr] = logged_word;
+#if 0
+		dev_dbg( alpx_dev->dev,"%s() : [0x%x] =>%d\n", __func__,
+			ALP_PROC_LOG_BASE + addr,
+			logged_word);
+#endif
+
+#if 0
+		for (idx = 0 ; idx < sizeof(u32) ; ++idx) {
+			printk("%c",(unsigned char)logged_word);
+			logged_word >>= 8;
+		}
+#endif
+print_hex_dump_bytes(alpx_dev->dev,"LOG", DUMP_PREFIX_NONE,
+		log_buffer, ALP_PROC_LOG_LENGTH);
+	}
+	
+	return 0;
+}
+#endif
+
+int alpx_proc_cmd(struct alpx_device *alpx_dev, u32 command)
+{
+	u32 status;
+	u32 fails;
+	int ret;
+
+	/* Set status to detect proc register update */
+	writel(0xFFFFFFFF, ALPX_REG(alpx_dev, ALP, PROC, STATUS));
+
+	/* Post command */
+	writel(command, ALPX_REG(alpx_dev, ALP, PROC, COMMAND));
+
+	/* Poll status for first update */
+	ret = readl_poll_timeout(ALPX_REG(alpx_dev, ALP, PROC, STATUS),
+				 status, status != 0xFFFFFFFF, 10, 1000000);
+	if (ret) {
+		dev_err(alpx_dev->dev, "cmd 0x%08X timeout (status=%x)\n",
+			command, status);
+		alpx_proc_log_dump(alpx_dev);
+		return ret;
+	}
+
+	/* Continue polling for end of processing */
+	ret = readl_poll_timeout(ALPX_REG(alpx_dev, ALP, PROC, STATUS),
+				 status, !(status & ALP_PROC_STATUS_PENDING),
+				 10, 1000000);
+	if (ret) {
+		dev_err(alpx_dev->dev, "cmd 0x%08X timeout (status=%x)\n",
+			command, status);
+		alpx_proc_log_dump(alpx_dev);
+		return ret;
+	}
+	
+	mdelay(1);
+	
+	/* Command processing is done -> check results */
+	status = readl(ALPX_REG(alpx_dev, ALP, PROC, STATUS));
+	fails = readl(ALPX_REG(alpx_dev, ALP, PROC, FAILS));
+	
+	dev_dbg(alpx_dev->dev,"cmd 0x%08X => status: 0x%x, fail:0x%x\n", command, status, fails);
+
+	if ((status & ALP_PROC_STATUS_FAIL) &&
+	    (fails != ALP_PROC_FAILS_FAIL_NONE)) {
+		dev_err(alpx_dev->dev, "cmd 0x%08X failed (status=%x, fails=%x)\n",
+			command, status, fails);
+		alpx_proc_log_dump(alpx_dev);
+		return -EIO;
+	}
+
+	alpx_proc_log_dump(alpx_dev);
+
+	return 0;
+}
+
+int alpx_proc_probe(struct alpx_device *alpx_dev)
+{
+	mutex_init(&alpx_dev->proc_mutex);
+	return 0;
+}
+
+int alpx_proc_remove(struct alpx_device *alpx_dev)
+{
+	mutex_destroy(&alpx_dev->proc_mutex);
+	return 0;
+}