mirror of
				https://github.com/torvalds/linux.git
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	The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:
        kzalloc(a * b, gfp)
with:
        kcalloc(a * b, gfp)
as well as handling cases of:
        kzalloc(a * b * c, gfp)
with:
        kzalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
        kzalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
        kzalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
  kzalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  kzalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
  kzalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kzalloc
+ kcalloc
  (
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
  kzalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
  kzalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
  kzalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
  kzalloc(C1 * C2 * C3, ...)
|
  kzalloc(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
  kzalloc(sizeof(THING) * C2, ...)
|
  kzalloc(sizeof(TYPE) * C2, ...)
|
  kzalloc(C1 * C2 * C3, ...)
|
  kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	(E1) * E2
+	E1, E2
  , ...)
|
- kzalloc
+ kcalloc
  (
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- kzalloc
+ kcalloc
  (
-	E1 * E2
+	E1, E2
  , ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
		
	
			
		
			
				
	
	
		
			511 lines
		
	
	
	
		
			12 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			511 lines
		
	
	
	
		
			12 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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 * Copyright 2015 IBM Corp.
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version
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 * 2 of the License, or (at your option) any later version.
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 */
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#include "cxl.h"
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static const __be32 *read_prop_string(const struct device_node *np,
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				const char *prop_name)
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{
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	const __be32 *prop;
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	prop = of_get_property(np, prop_name, NULL);
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	if (cxl_verbose && prop)
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		pr_info("%s: %s\n", prop_name, (char *) prop);
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	return prop;
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}
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static const __be32 *read_prop_dword(const struct device_node *np,
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				const char *prop_name, u32 *val)
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{
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	const __be32 *prop;
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	prop = of_get_property(np, prop_name, NULL);
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	if (prop)
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		*val = be32_to_cpu(prop[0]);
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	if (cxl_verbose && prop)
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		pr_info("%s: %#x (%u)\n", prop_name, *val, *val);
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	return prop;
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}
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static const __be64 *read_prop64_dword(const struct device_node *np,
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				const char *prop_name, u64 *val)
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{
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	const __be64 *prop;
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	prop = of_get_property(np, prop_name, NULL);
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	if (prop)
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		*val = be64_to_cpu(prop[0]);
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	if (cxl_verbose && prop)
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		pr_info("%s: %#llx (%llu)\n", prop_name, *val, *val);
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	return prop;
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}
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static int read_handle(struct device_node *np, u64 *handle)
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{
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	const __be32 *prop;
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	u64 size;
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	/* Get address and size of the node */
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	prop = of_get_address(np, 0, &size, NULL);
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	if (size)
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		return -EINVAL;
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	/* Helper to read a big number; size is in cells (not bytes) */
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	*handle = of_read_number(prop, of_n_addr_cells(np));
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	return 0;
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}
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static int read_phys_addr(struct device_node *np, char *prop_name,
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			struct cxl_afu *afu)
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{
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	int i, len, entry_size, naddr, nsize, type;
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	u64 addr, size;
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	const __be32 *prop;
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	naddr = of_n_addr_cells(np);
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	nsize = of_n_size_cells(np);
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	prop = of_get_property(np, prop_name, &len);
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	if (prop) {
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		entry_size = naddr + nsize;
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		for (i = 0; i < (len / 4); i += entry_size, prop += entry_size) {
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			type = be32_to_cpu(prop[0]);
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			addr = of_read_number(prop, naddr);
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			size = of_read_number(&prop[naddr], nsize);
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			switch (type) {
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			case 0: /* unit address */
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				afu->guest->handle = addr;
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				break;
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			case 1: /* p2 area */
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				afu->guest->p2n_phys += addr;
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				afu->guest->p2n_size = size;
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				break;
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			case 2: /* problem state area */
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				afu->psn_phys += addr;
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				afu->adapter->ps_size = size;
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				break;
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			default:
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				pr_err("Invalid address type %d found in %s property of AFU\n",
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					type, prop_name);
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				return -EINVAL;
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			}
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			if (cxl_verbose)
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				pr_info("%s: %#x %#llx (size %#llx)\n",
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					prop_name, type, addr, size);
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		}
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	}
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	return 0;
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}
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static int read_vpd(struct cxl *adapter, struct cxl_afu *afu)
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{
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	char vpd[256];
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	int rc;
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	size_t len = sizeof(vpd);
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	memset(vpd, 0, len);
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	if (adapter)
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		rc = cxl_guest_read_adapter_vpd(adapter, vpd, len);
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	else
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		rc = cxl_guest_read_afu_vpd(afu, vpd, len);
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	if (rc > 0) {
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		cxl_dump_debug_buffer(vpd, rc);
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		rc = 0;
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	}
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	return rc;
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}
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int cxl_of_read_afu_handle(struct cxl_afu *afu, struct device_node *afu_np)
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{
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	if (read_handle(afu_np, &afu->guest->handle))
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		return -EINVAL;
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	pr_devel("AFU handle: 0x%.16llx\n", afu->guest->handle);
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	return 0;
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}
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int cxl_of_read_afu_properties(struct cxl_afu *afu, struct device_node *np)
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{
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	int i, len, rc;
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	char *p;
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	const __be32 *prop;
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	u16 device_id, vendor_id;
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	u32 val = 0, class_code;
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	/* Properties are read in the same order as listed in PAPR */
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	if (cxl_verbose) {
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		pr_info("Dump of the 'ibm,coherent-platform-function' node properties:\n");
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		prop = of_get_property(np, "compatible", &len);
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		i = 0;
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		while (i < len) {
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			p = (char *) prop + i;
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			pr_info("compatible: %s\n", p);
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			i += strlen(p) + 1;
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		}
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		read_prop_string(np, "name");
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	}
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	rc = read_phys_addr(np, "reg", afu);
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	if (rc)
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		return rc;
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	rc = read_phys_addr(np, "assigned-addresses", afu);
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	if (rc)
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		return rc;
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	if (afu->psn_phys == 0)
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		afu->psa = false;
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	else
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		afu->psa = true;
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	if (cxl_verbose) {
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		read_prop_string(np, "ibm,loc-code");
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		read_prop_string(np, "device_type");
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	}
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	read_prop_dword(np, "ibm,#processes", &afu->max_procs_virtualised);
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	if (cxl_verbose) {
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		read_prop_dword(np, "ibm,scratchpad-size", &val);
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		read_prop_dword(np, "ibm,programmable", &val);
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		read_prop_string(np, "ibm,phandle");
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		read_vpd(NULL, afu);
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	}
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	read_prop_dword(np, "ibm,max-ints-per-process", &afu->guest->max_ints);
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	afu->irqs_max = afu->guest->max_ints;
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	prop = read_prop_dword(np, "ibm,min-ints-per-process", &afu->pp_irqs);
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	if (prop) {
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		/* One extra interrupt for the PSL interrupt is already
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		 * included. Remove it now to keep only AFU interrupts and
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		 * match the native case.
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		 */
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		afu->pp_irqs--;
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	}
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	if (cxl_verbose) {
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		read_prop_dword(np, "ibm,max-ints", &val);
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		read_prop_dword(np, "ibm,vpd-size", &val);
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	}
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	read_prop64_dword(np, "ibm,error-buffer-size", &afu->eb_len);
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	afu->eb_offset = 0;
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	if (cxl_verbose)
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		read_prop_dword(np, "ibm,config-record-type", &val);
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	read_prop64_dword(np, "ibm,config-record-size", &afu->crs_len);
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	afu->crs_offset = 0;
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	read_prop_dword(np, "ibm,#config-records", &afu->crs_num);
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	if (cxl_verbose) {
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		for (i = 0; i < afu->crs_num; i++) {
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			rc = cxl_ops->afu_cr_read16(afu, i, PCI_DEVICE_ID,
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						&device_id);
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			if (!rc)
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				pr_info("record %d - device-id: %#x\n",
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					i, device_id);
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			rc = cxl_ops->afu_cr_read16(afu, i, PCI_VENDOR_ID,
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						&vendor_id);
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			if (!rc)
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				pr_info("record %d - vendor-id: %#x\n",
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					i, vendor_id);
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			rc = cxl_ops->afu_cr_read32(afu, i, PCI_CLASS_REVISION,
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						&class_code);
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			if (!rc) {
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				class_code >>= 8;
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				pr_info("record %d - class-code: %#x\n",
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					i, class_code);
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			}
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		}
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		read_prop_dword(np, "ibm,function-number", &val);
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		read_prop_dword(np, "ibm,privileged-function", &val);
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		read_prop_dword(np, "vendor-id", &val);
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		read_prop_dword(np, "device-id", &val);
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		read_prop_dword(np, "revision-id", &val);
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		read_prop_dword(np, "class-code", &val);
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		read_prop_dword(np, "subsystem-vendor-id", &val);
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		read_prop_dword(np, "subsystem-id", &val);
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	}
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	/*
 | 
						|
	 * if "ibm,process-mmio" doesn't exist then per-process mmio is
 | 
						|
	 * not supported
 | 
						|
	 */
 | 
						|
	val = 0;
 | 
						|
	prop = read_prop_dword(np, "ibm,process-mmio", &val);
 | 
						|
	if (prop && val == 1)
 | 
						|
		afu->pp_psa = true;
 | 
						|
	else
 | 
						|
		afu->pp_psa = false;
 | 
						|
 | 
						|
	if (cxl_verbose) {
 | 
						|
		read_prop_dword(np, "ibm,supports-aur", &val);
 | 
						|
		read_prop_dword(np, "ibm,supports-csrp", &val);
 | 
						|
		read_prop_dword(np, "ibm,supports-prr", &val);
 | 
						|
	}
 | 
						|
 | 
						|
	prop = read_prop_dword(np, "ibm,function-error-interrupt", &val);
 | 
						|
	if (prop)
 | 
						|
		afu->serr_hwirq = val;
 | 
						|
 | 
						|
	pr_devel("AFU handle: %#llx\n", afu->guest->handle);
 | 
						|
	pr_devel("p2n_phys: %#llx (size %#llx)\n",
 | 
						|
		afu->guest->p2n_phys, afu->guest->p2n_size);
 | 
						|
	pr_devel("psn_phys: %#llx (size %#llx)\n",
 | 
						|
		afu->psn_phys, afu->adapter->ps_size);
 | 
						|
	pr_devel("Max number of processes virtualised=%i\n",
 | 
						|
		afu->max_procs_virtualised);
 | 
						|
	pr_devel("Per-process irqs min=%i, max=%i\n", afu->pp_irqs,
 | 
						|
		 afu->irqs_max);
 | 
						|
	pr_devel("Slice error interrupt=%#lx\n", afu->serr_hwirq);
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
static int read_adapter_irq_config(struct cxl *adapter, struct device_node *np)
 | 
						|
{
 | 
						|
	const __be32 *ranges;
 | 
						|
	int len, nranges, i;
 | 
						|
	struct irq_avail *cur;
 | 
						|
 | 
						|
	ranges = of_get_property(np, "interrupt-ranges", &len);
 | 
						|
	if (ranges == NULL || len < (2 * sizeof(int)))
 | 
						|
		return -EINVAL;
 | 
						|
 | 
						|
	/*
 | 
						|
	 * encoded array of two cells per entry, each cell encoded as
 | 
						|
	 * with encode-int
 | 
						|
	 */
 | 
						|
	nranges = len / (2 * sizeof(int));
 | 
						|
	if (nranges == 0 || (nranges * 2 * sizeof(int)) != len)
 | 
						|
		return -EINVAL;
 | 
						|
 | 
						|
	adapter->guest->irq_avail = kcalloc(nranges, sizeof(struct irq_avail),
 | 
						|
					    GFP_KERNEL);
 | 
						|
	if (adapter->guest->irq_avail == NULL)
 | 
						|
		return -ENOMEM;
 | 
						|
 | 
						|
	adapter->guest->irq_base_offset = be32_to_cpu(ranges[0]);
 | 
						|
	for (i = 0; i < nranges; i++) {
 | 
						|
		cur = &adapter->guest->irq_avail[i];
 | 
						|
		cur->offset = be32_to_cpu(ranges[i * 2]);
 | 
						|
		cur->range  = be32_to_cpu(ranges[i * 2 + 1]);
 | 
						|
		cur->bitmap = kcalloc(BITS_TO_LONGS(cur->range),
 | 
						|
				sizeof(*cur->bitmap), GFP_KERNEL);
 | 
						|
		if (cur->bitmap == NULL)
 | 
						|
			goto err;
 | 
						|
		if (cur->offset < adapter->guest->irq_base_offset)
 | 
						|
			adapter->guest->irq_base_offset = cur->offset;
 | 
						|
		if (cxl_verbose)
 | 
						|
			pr_info("available IRQ range: %#lx-%#lx (%lu)\n",
 | 
						|
				cur->offset, cur->offset + cur->range - 1,
 | 
						|
				cur->range);
 | 
						|
	}
 | 
						|
	adapter->guest->irq_nranges = nranges;
 | 
						|
	spin_lock_init(&adapter->guest->irq_alloc_lock);
 | 
						|
 | 
						|
	return 0;
 | 
						|
err:
 | 
						|
	for (i--; i >= 0; i--) {
 | 
						|
		cur = &adapter->guest->irq_avail[i];
 | 
						|
		kfree(cur->bitmap);
 | 
						|
	}
 | 
						|
	kfree(adapter->guest->irq_avail);
 | 
						|
	adapter->guest->irq_avail = NULL;
 | 
						|
	return -ENOMEM;
 | 
						|
}
 | 
						|
 | 
						|
int cxl_of_read_adapter_handle(struct cxl *adapter, struct device_node *np)
 | 
						|
{
 | 
						|
	if (read_handle(np, &adapter->guest->handle))
 | 
						|
		return -EINVAL;
 | 
						|
	pr_devel("Adapter handle: 0x%.16llx\n", adapter->guest->handle);
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
int cxl_of_read_adapter_properties(struct cxl *adapter, struct device_node *np)
 | 
						|
{
 | 
						|
	int rc, len, naddr, i;
 | 
						|
	char *p;
 | 
						|
	const __be32 *prop;
 | 
						|
	u32 val = 0;
 | 
						|
 | 
						|
	/* Properties are read in the same order as listed in PAPR */
 | 
						|
 | 
						|
	naddr = of_n_addr_cells(np);
 | 
						|
 | 
						|
	if (cxl_verbose) {
 | 
						|
		pr_info("Dump of the 'ibm,coherent-platform-facility' node properties:\n");
 | 
						|
 | 
						|
		read_prop_dword(np, "#address-cells", &val);
 | 
						|
		read_prop_dword(np, "#size-cells", &val);
 | 
						|
 | 
						|
		prop = of_get_property(np, "compatible", &len);
 | 
						|
		i = 0;
 | 
						|
		while (i < len) {
 | 
						|
			p = (char *) prop + i;
 | 
						|
			pr_info("compatible: %s\n", p);
 | 
						|
			i += strlen(p) + 1;
 | 
						|
		}
 | 
						|
		read_prop_string(np, "name");
 | 
						|
		read_prop_string(np, "model");
 | 
						|
 | 
						|
		prop = of_get_property(np, "reg", NULL);
 | 
						|
		if (prop) {
 | 
						|
			pr_info("reg: addr:%#llx size:%#x\n",
 | 
						|
				of_read_number(prop, naddr),
 | 
						|
				be32_to_cpu(prop[naddr]));
 | 
						|
		}
 | 
						|
 | 
						|
		read_prop_string(np, "ibm,loc-code");
 | 
						|
	}
 | 
						|
 | 
						|
	if ((rc = read_adapter_irq_config(adapter, np)))
 | 
						|
		return rc;
 | 
						|
 | 
						|
	if (cxl_verbose) {
 | 
						|
		read_prop_string(np, "device_type");
 | 
						|
		read_prop_string(np, "ibm,phandle");
 | 
						|
	}
 | 
						|
 | 
						|
	prop = read_prop_dword(np, "ibm,caia-version", &val);
 | 
						|
	if (prop) {
 | 
						|
		adapter->caia_major = (val & 0xFF00) >> 8;
 | 
						|
		adapter->caia_minor = val & 0xFF;
 | 
						|
	}
 | 
						|
 | 
						|
	prop = read_prop_dword(np, "ibm,psl-revision", &val);
 | 
						|
	if (prop)
 | 
						|
		adapter->psl_rev = val;
 | 
						|
 | 
						|
	prop = read_prop_string(np, "status");
 | 
						|
	if (prop) {
 | 
						|
		adapter->guest->status = kasprintf(GFP_KERNEL, "%s", (char *) prop);
 | 
						|
		if (adapter->guest->status == NULL)
 | 
						|
			return -ENOMEM;
 | 
						|
	}
 | 
						|
 | 
						|
	prop = read_prop_dword(np, "vendor-id", &val);
 | 
						|
	if (prop)
 | 
						|
		adapter->guest->vendor = val;
 | 
						|
 | 
						|
	prop = read_prop_dword(np, "device-id", &val);
 | 
						|
	if (prop)
 | 
						|
		adapter->guest->device = val;
 | 
						|
 | 
						|
	if (cxl_verbose) {
 | 
						|
		read_prop_dword(np, "ibm,privileged-facility", &val);
 | 
						|
		read_prop_dword(np, "revision-id", &val);
 | 
						|
		read_prop_dword(np, "class-code", &val);
 | 
						|
	}
 | 
						|
 | 
						|
	prop = read_prop_dword(np, "subsystem-vendor-id", &val);
 | 
						|
	if (prop)
 | 
						|
		adapter->guest->subsystem_vendor = val;
 | 
						|
 | 
						|
	prop = read_prop_dword(np, "subsystem-id", &val);
 | 
						|
	if (prop)
 | 
						|
		adapter->guest->subsystem = val;
 | 
						|
 | 
						|
	if (cxl_verbose)
 | 
						|
		read_vpd(adapter, NULL);
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
static int cxl_of_remove(struct platform_device *pdev)
 | 
						|
{
 | 
						|
	struct cxl *adapter;
 | 
						|
	int afu;
 | 
						|
 | 
						|
	adapter = dev_get_drvdata(&pdev->dev);
 | 
						|
	for (afu = 0; afu < adapter->slices; afu++)
 | 
						|
		cxl_guest_remove_afu(adapter->afu[afu]);
 | 
						|
 | 
						|
	cxl_guest_remove_adapter(adapter);
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
static void cxl_of_shutdown(struct platform_device *pdev)
 | 
						|
{
 | 
						|
	cxl_of_remove(pdev);
 | 
						|
}
 | 
						|
 | 
						|
int cxl_of_probe(struct platform_device *pdev)
 | 
						|
{
 | 
						|
	struct device_node *np = NULL;
 | 
						|
	struct device_node *afu_np = NULL;
 | 
						|
	struct cxl *adapter = NULL;
 | 
						|
	int ret;
 | 
						|
	int slice = 0, slice_ok = 0;
 | 
						|
 | 
						|
	pr_devel("in %s\n", __func__);
 | 
						|
 | 
						|
	np = pdev->dev.of_node;
 | 
						|
	if (np == NULL)
 | 
						|
		return -ENODEV;
 | 
						|
 | 
						|
	/* init adapter */
 | 
						|
	adapter = cxl_guest_init_adapter(np, pdev);
 | 
						|
	if (IS_ERR(adapter)) {
 | 
						|
		dev_err(&pdev->dev, "guest_init_adapter failed: %li\n", PTR_ERR(adapter));
 | 
						|
		return PTR_ERR(adapter);
 | 
						|
	}
 | 
						|
 | 
						|
	/* init afu */
 | 
						|
	for_each_child_of_node(np, afu_np) {
 | 
						|
		if ((ret = cxl_guest_init_afu(adapter, slice, afu_np)))
 | 
						|
			dev_err(&pdev->dev, "AFU %i failed to initialise: %i\n",
 | 
						|
				slice, ret);
 | 
						|
		else
 | 
						|
			slice_ok++;
 | 
						|
		slice++;
 | 
						|
	}
 | 
						|
 | 
						|
	if (slice_ok == 0) {
 | 
						|
		dev_info(&pdev->dev, "No active AFU");
 | 
						|
		adapter->slices = 0;
 | 
						|
	}
 | 
						|
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
 | 
						|
static const struct of_device_id cxl_of_match[] = {
 | 
						|
	{ .compatible = "ibm,coherent-platform-facility",},
 | 
						|
	{},
 | 
						|
};
 | 
						|
MODULE_DEVICE_TABLE(of, cxl_of_match);
 | 
						|
 | 
						|
struct platform_driver cxl_of_driver = {
 | 
						|
	.driver = {
 | 
						|
		.name = "cxl_of",
 | 
						|
		.of_match_table = cxl_of_match,
 | 
						|
		.owner = THIS_MODULE
 | 
						|
	},
 | 
						|
	.probe = cxl_of_probe,
 | 
						|
	.remove = cxl_of_remove,
 | 
						|
	.shutdown = cxl_of_shutdown,
 | 
						|
};
 |