[linux.git] / drivers / mcb / mcb-parse.c

#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/io.h>
#include <linux/mcb.h>

#include "mcb-internal.h"

struct mcb_parse_priv {
	phys_addr_t mapbase;
	void __iomem *base;
};

#define for_each_chameleon_cell(dtype, p)	\
	for ((dtype) = get_next_dtype((p));	\
	     (dtype) != CHAMELEON_DTYPE_END;	\
	     (dtype) = get_next_dtype((p)))

static inline uint32_t get_next_dtype(void __iomem *p)
{
	uint32_t dtype;

	dtype = readl(p);
	return dtype >> 28;
}

static int chameleon_parse_bdd(struct mcb_bus *bus,
			phys_addr_t mapbase,
			void __iomem *base)
{
	return 0;
}

static int chameleon_parse_gdd(struct mcb_bus *bus,
			phys_addr_t mapbase,
			void __iomem *base)
{
	struct chameleon_gdd __iomem *gdd =
		(struct chameleon_gdd __iomem *) base;
	struct mcb_device *mdev;
	u32 offset;
	u32 size;
	int ret;
	__le32 reg1;
	__le32 reg2;

	mdev = mcb_alloc_dev(bus);
	if (!mdev)
		return -ENOMEM;

	reg1 = readl(&gdd->reg1);
	reg2 = readl(&gdd->reg2);
	offset = readl(&gdd->offset);
	size = readl(&gdd->size);

	mdev->id = GDD_DEV(reg1);
	mdev->rev = GDD_REV(reg1);
	mdev->var = GDD_VAR(reg1);
	mdev->bar = GDD_BAR(reg1);
	mdev->group = GDD_GRP(reg2);
	mdev->inst = GDD_INS(reg2);

	pr_debug("Found a 16z%03d\n", mdev->id);

	mdev->irq.start = GDD_IRQ(reg1);
	mdev->irq.end = GDD_IRQ(reg1);
	mdev->irq.flags = IORESOURCE_IRQ;

	mdev->mem.start = mapbase + offset;
	mdev->mem.end = mdev->mem.start + size - 1;
	mdev->mem.flags = IORESOURCE_MEM;

	mdev->is_added = false;

	ret = mcb_device_register(bus, mdev);
	if (ret < 0)
		goto err;

	return 0;

err:
	mcb_free_dev(mdev);

	return ret;
}

int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase,
			void __iomem *base)
{
	char __iomem *p = base;
	struct chameleon_fpga_header *header;
	uint32_t dtype;
	int num_cells = 0;
	int ret = 0;
	u32 hsize;

	hsize = sizeof(struct chameleon_fpga_header);

	header = kzalloc(hsize, GFP_KERNEL);
	if (!header)
		return -ENOMEM;

	/* Extract header information */
	memcpy_fromio(header, p, hsize);
	/* We only support chameleon v2 at the moment */
	header->magic = le16_to_cpu(header->magic);
	if (header->magic != CHAMELEONV2_MAGIC) {
		pr_err("Unsupported chameleon version 0x%x\n",
				header->magic);
		kfree(header);
		return -ENODEV;
	}
	p += hsize;

	pr_debug("header->revision = %d\n", header->revision);
	pr_debug("header->model = 0x%x ('%c')\n", header->model,
		header->model);
	pr_debug("header->minor = %d\n", header->minor);
	pr_debug("header->bus_type = 0x%x\n", header->bus_type);


	pr_debug("header->magic = 0x%x\n", header->magic);
	pr_debug("header->filename = \"%.*s\"\n", CHAMELEON_FILENAME_LEN,
		header->filename);

	for_each_chameleon_cell(dtype, p) {
		switch (dtype) {
		case CHAMELEON_DTYPE_GENERAL:
			ret = chameleon_parse_gdd(bus, mapbase, p);
			if (ret < 0)
				goto out;
			p += sizeof(struct chameleon_gdd);
			break;
		case CHAMELEON_DTYPE_BRIDGE:
			chameleon_parse_bdd(bus, mapbase, p);
			p += sizeof(struct chameleon_bdd);
			break;
		case CHAMELEON_DTYPE_END:
			break;
		default:
			pr_err("Invalid chameleon descriptor type 0x%x\n",
				dtype);
			kfree(header);
			return -EINVAL;
		}
		num_cells++;
	}

	if (num_cells == 0)
		num_cells = -EINVAL;

	kfree(header);
	return num_cells;

out:
	kfree(header);
	return ret;
}
EXPORT_SYMBOL_GPL(chameleon_parse_cells);
Commit	Line	Data
3764e82e JT	1	#include <linux/types.h>
	2	#include <linux/ioport.h>
	3	#include <linux/slab.h>
	4	#include <linux/export.h>
	5	#include <linux/io.h>
	6	#include <linux/mcb.h>
	7
	8	#include "mcb-internal.h"
	9
	10	struct mcb_parse_priv {
	11	phys_addr_t mapbase;
	12	void __iomem *base;
	13	};
	14
	15	#define for_each_chameleon_cell(dtype, p) \
	16	for ((dtype) = get_next_dtype((p)); \
	17	(dtype) != CHAMELEON_DTYPE_END; \
	18	(dtype) = get_next_dtype((p)))
	19
	20	static inline uint32_t get_next_dtype(void __iomem *p)
	21	{
	22	uint32_t dtype;
	23
	24	dtype = readl(p);
	25	return dtype >> 28;
	26	}
	27
	28	static int chameleon_parse_bdd(struct mcb_bus *bus,
	29	phys_addr_t mapbase,
	30	void __iomem *base)
	31	{
	32	return 0;
	33	}
	34
	35	static int chameleon_parse_gdd(struct mcb_bus *bus,
	36	phys_addr_t mapbase,
	37	void __iomem *base)
	38	{
	39	struct chameleon_gdd __iomem *gdd =
	40	(struct chameleon_gdd __iomem *) base;
	41	struct mcb_device *mdev;
	42	u32 offset;
	43	u32 size;
	44	int ret;
	45	__le32 reg1;
	46	__le32 reg2;
	47
	48	mdev = mcb_alloc_dev(bus);
	49	if (!mdev)
	50	return -ENOMEM;
	51
	52	reg1 = readl(&gdd->reg1);
	53	reg2 = readl(&gdd->reg2);
	54	offset = readl(&gdd->offset);
	55	size = readl(&gdd->size);
	56
	57	mdev->id = GDD_DEV(reg1);
	58	mdev->rev = GDD_REV(reg1);
	59	mdev->var = GDD_VAR(reg1);
	60	mdev->bar = GDD_BAR(reg1);
	61	mdev->group = GDD_GRP(reg2);
	62	mdev->inst = GDD_INS(reg2);
	63
	64	pr_debug("Found a 16z%03d\n", mdev->id);
65
66	mdev->irq.start = GDD_IRQ(reg1);
67	mdev->irq.end = GDD_IRQ(reg1);
68	mdev->irq.flags = IORESOURCE_IRQ;
69
70	mdev->mem.start = mapbase + offset;
71	mdev->mem.end = mdev->mem.start + size - 1;
72	mdev->mem.flags = IORESOURCE_MEM;
73
74	mdev->is_added = false;
75
76	ret = mcb_device_register(bus, mdev);
77	if (ret < 0)
78	goto err;
79
80	return 0;
81
82	err:
83	mcb_free_dev(mdev);
84
85	return ret;
86	}
87
88	int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase,
89	void __iomem *base)
90	{
91	char __iomem *p = base;
92	struct chameleon_fpga_header *header;
93	uint32_t dtype;
94	int num_cells = 0;
95	int ret = 0;
96	u32 hsize;
97
98	hsize = sizeof(struct chameleon_fpga_header);
99
100	header = kzalloc(hsize, GFP_KERNEL);
101	if (!header)
102	return -ENOMEM;
103
104	/* Extract header information */
105	memcpy_fromio(header, p, hsize);
106	/* We only support chameleon v2 at the moment */
107	header->magic = le16_to_cpu(header->magic);
108	if (header->magic != CHAMELEONV2_MAGIC) {
109	pr_err("Unsupported chameleon version 0x%x\n",
110	header->magic);
111	kfree(header);
112	return -ENODEV;
113	}
114	p += hsize;
115
116	pr_debug("header->revision = %d\n", header->revision);
117	pr_debug("header->model = 0x%x ('%c')\n", header->model,
118	header->model);
119	pr_debug("header->minor = %d\n", header->minor);
120	pr_debug("header->bus_type = 0x%x\n", header->bus_type);
121
122
123	pr_debug("header->magic = 0x%x\n", header->magic);
124	pr_debug("header->filename = \"%.*s\"\n", CHAMELEON_FILENAME_LEN,
125	header->filename);
126
127	for_each_chameleon_cell(dtype, p) {
128	switch (dtype) {
129	case CHAMELEON_DTYPE_GENERAL:
130	ret = chameleon_parse_gdd(bus, mapbase, p);
131	if (ret < 0)
132	goto out;
133	p += sizeof(struct chameleon_gdd);
134	break;
135	case CHAMELEON_DTYPE_BRIDGE:
136	chameleon_parse_bdd(bus, mapbase, p);
137	p += sizeof(struct chameleon_bdd);
138	break;
139	case CHAMELEON_DTYPE_END:
140	break;
141	default:
142	pr_err("Invalid chameleon descriptor type 0x%x\n",
143	dtype);
7c735282	144	kfree(header);
3764e82e JT	145	return -EINVAL;
	146	}
	147	num_cells++;
	148	}
	149
	150	if (num_cells == 0)
	151	num_cells = -EINVAL;
	152
	153	kfree(header);
	154	return num_cells;
	155
	156	out:
	157	kfree(header);
	158	return ret;
	159	}
	160	EXPORT_SYMBOL_GPL(chameleon_parse_cells);