add driver 5G

hc

2024-01-31 f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2

 kernel/drivers/macintosh/smu.c
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@@ -1,10 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * PowerMac G5 SMU driver
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  *
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  * Copyright 2004 J. Mayer <l_indien@magic.fr>
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  * Copyright 2005 Benjamin Herrenschmidt, IBM Corp.
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- *
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- * Released under the term of the GNU GPL v2.
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  */
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 /*
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@@ -23,7 +22,7 @@
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 #include <linux/kernel.h>
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 #include <linux/device.h>
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 #include <linux/dmapool.h>
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-#include <linux/bootmem.h>
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+#include <linux/memblock.h>
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 #include <linux/vmalloc.h>
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 #include <linux/highmem.h>
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 #include <linux/jiffies.h>
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@@ -38,7 +37,6 @@
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 #include <linux/of_irq.h>
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 #include <linux/of_platform.h>
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 #include <linux/slab.h>
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-#include <linux/memblock.h>
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 #include <linux/sched/signal.h>
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 #include <asm/byteorder.h>
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@@ -134,7 +132,7 @@
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 	/* Flush command and data to RAM */
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 	faddr = (unsigned long)smu->cmd_buf;
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 	fend = faddr + smu->cmd_buf->length + 2;
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-	flush_inval_dcache_range(faddr, fend);
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+	flush_dcache_range(faddr, fend);
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 	/* We also disable NAP mode for the duration of the command
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@@ -196,7 +194,7 @@
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 		 * reply length (it's only 2 cache lines anyway)
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 		 */
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 		faddr = (unsigned long)smu->cmd_buf;
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-		flush_inval_dcache_range(faddr, faddr + 256);
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+		flush_dcache_range(faddr, faddr + 256);
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 		/* Now check ack */
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 		ack = (~cmd->cmd) & 0xff;
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@@ -486,14 +484,17 @@
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 	 * SMU based G5s need some memory below 2Gb. Thankfully this is
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 	 * called at a time where memblock is still available.
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 	 */
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-	smu_cmdbuf_abs = memblock_alloc_base(4096, 4096, 0x80000000UL);
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+	smu_cmdbuf_abs = memblock_phys_alloc_range(4096, 4096, 0, 0x80000000UL);
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 	if (smu_cmdbuf_abs == 0) {
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 		printk(KERN_ERR "SMU: Command buffer allocation failed !\n");
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 		ret = -EINVAL;
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 		goto fail_np;
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 	}
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-	smu = alloc_bootmem(sizeof(struct smu_device));
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+	smu = memblock_alloc(sizeof(struct smu_device), SMP_CACHE_BYTES);
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+	if (!smu)
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+		panic("%s: Failed to allocate %zu bytes\n", __func__,
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+		      sizeof(struct smu_device));
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 	spin_lock_init(&smu->lock);
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 	INIT_LIST_HEAD(&smu->cmd_list);
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@@ -569,7 +570,7 @@
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 fail_db_node:
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 	of_node_put(smu->db_node);
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 fail_bootmem:
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-	free_bootmem(__pa(smu), sizeof(struct smu_device));
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+	memblock_free(__pa(smu), sizeof(struct smu_device));
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 	smu = NULL;
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 fail_np:
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 	of_node_put(np);
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@@ -637,7 +638,7 @@
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 {
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 	struct device_node *np;
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-	for (np = NULL; (np = of_get_next_child(smu->of_node, np)) != NULL;)
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+	for_each_child_of_node(smu->of_node, np)
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 		if (of_device_is_compatible(np, "smu-sensors"))
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 			of_platform_device_create(np, "smu-sensors",
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 						  &smu->of_dev->dev);
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@@ -851,6 +852,7 @@
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 		break;
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 	case SMU_I2C_TRANSFER_COMBINED:
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 		cmd->info.devaddr &= 0xfe;
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+		fallthrough;
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 	case SMU_I2C_TRANSFER_STDSUB:
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 		if (cmd->info.sublen > 3)
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 			return -EINVAL;
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@@ -1013,7 +1015,7 @@
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 /* Note: Only allowed to return error code in pointers (using ERR_PTR)
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  * when interruptible is 1
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  */
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-const struct smu_sdbp_header *__smu_get_sdb_partition(int id,
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+static const struct smu_sdbp_header *__smu_get_sdb_partition(int id,
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 		unsigned int *size, int interruptible)
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 {
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 	char pname[32];