add stmac read mac form eeprom

hc

2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/arch/s390/include/asm/cio.h
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@@ -7,6 +7,7 @@
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 #include <linux/spinlock.h>
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 #include <linux/bitops.h>
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+#include <linux/genalloc.h>
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 #include <asm/types.h>
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 #define LPM_ANYPATH 0xff
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@@ -264,6 +265,36 @@
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 #define CIW_TYPE_RNI	0x2    	/* read node identifier */
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 /*
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+ * Node Descriptor as defined in SA22-7204, "Common I/O-Device Commands"
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+ */
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+
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+#define ND_VALIDITY_VALID	0
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+#define ND_VALIDITY_OUTDATED	1
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+#define ND_VALIDITY_INVALID	2
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+
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+struct node_descriptor {
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+	/* Flags. */
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+	union {
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+		struct {
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+			u32 validity:3;
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+			u32 reserved:5;
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+		} __packed;
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+		u8 byte0;
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+	} __packed;
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+
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+	/* Node parameters. */
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+	u32 params:24;
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+
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+	/* Node ID. */
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+	char type[6];
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+	char model[3];
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+	char manufacturer[3];
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+	char plant[2];
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+	char seq[12];
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+	u16 tag;
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+} __packed;
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+
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+/*
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  * Flags used as input parameters for do_IO()
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  */
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 #define DOIO_ALLOW_SUSPEND	 0x0001 /* allow for channel prog. suspend */
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@@ -325,11 +356,22 @@
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 	return 8 - ffs(mask);
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 }
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-void channel_subsystem_reinit(void);
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 extern void css_schedule_reprobe(void);
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+
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+extern void *cio_dma_zalloc(size_t size);
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+extern void cio_dma_free(void *cpu_addr, size_t size);
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+extern struct device *cio_get_dma_css_dev(void);
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+
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+void *cio_gp_dma_zalloc(struct gen_pool *gp_dma, struct device *dma_dev,
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+			size_t size);
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+void cio_gp_dma_free(struct gen_pool *gp_dma, void *cpu_addr, size_t size);
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+void cio_gp_dma_destroy(struct gen_pool *gp_dma, struct device *dma_dev);
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+struct gen_pool *cio_gp_dma_create(struct device *dma_dev, int nr_pages);
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 /* Function from drivers/s390/cio/chsc.c */
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 int chsc_sstpc(void *page, unsigned int op, u16 ctrl, u64 *clock_delta);
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 int chsc_sstpi(void *page, void *result, size_t size);
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+int chsc_stzi(void *page, void *result, size_t size);
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+int chsc_sgib(u32 origin);
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 #endif