[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / aic7xxx / aic79xx_osm_pci.c

/*
 * Linux driver attachment glue for PCI based U320 controllers.
 *
 * Copyright (c) 2000-2001 Adaptec Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm_pci.c#25 $
 */

#include "aic79xx_osm.h"
#include "aic79xx_inline.h"
#include "aic79xx_pci.h"

static int	ahd_linux_pci_dev_probe(struct pci_dev *pdev,
					const struct pci_device_id *ent);
static int	ahd_linux_pci_reserve_io_regions(struct ahd_softc *ahd,
						 u_long *base, u_long *base2);
static int	ahd_linux_pci_reserve_mem_region(struct ahd_softc *ahd,
						 u_long *bus_addr,
						 uint8_t __iomem **maddr);
static void	ahd_linux_pci_dev_remove(struct pci_dev *pdev);

/* Define the macro locally since it's different for different class of chips.
 */
#define ID(x)            \
	ID2C(x),         \
	ID2C(IDIROC(x))

static struct pci_device_id ahd_linux_pci_id_table[] = {
	/* aic7901 based controllers */
	ID(ID_AHA_29320A),
	ID(ID_AHA_29320ALP),
	/* aic7902 based controllers */
	ID(ID_AHA_29320),
	ID(ID_AHA_29320B),
	ID(ID_AHA_29320LP),
	ID(ID_AHA_39320),
	ID(ID_AHA_39320_B),
	ID(ID_AHA_39320A),
	ID(ID_AHA_39320D),
	ID(ID_AHA_39320D_HP),
	ID(ID_AHA_39320D_B),
	ID(ID_AHA_39320D_B_HP),
	/* Generic chip probes for devices we don't know exactly. */
	ID16(ID_AIC7901 & ID_9005_GENERIC_MASK),
	ID(ID_AIC7901A & ID_DEV_VENDOR_MASK),
	ID16(ID_AIC7902 & ID_9005_GENERIC_MASK),
	{ 0 }
};

MODULE_DEVICE_TABLE(pci, ahd_linux_pci_id_table);

struct pci_driver aic79xx_pci_driver = {
	.name		= "aic79xx",
	.probe		= ahd_linux_pci_dev_probe,
	.remove		= ahd_linux_pci_dev_remove,
	.id_table	= ahd_linux_pci_id_table
};

static void
ahd_linux_pci_dev_remove(struct pci_dev *pdev)
{
	struct ahd_softc *ahd;
	u_long l;

	/*
	 * We should be able to just perform
	 * the free directly, but check our
	 * list for extra sanity.
	 */
	ahd_list_lock(&l);
	ahd = ahd_find_softc((struct ahd_softc *)pci_get_drvdata(pdev));
	if (ahd != NULL) {
		u_long s;

		TAILQ_REMOVE(&ahd_tailq, ahd, links);
		ahd_list_unlock(&l);
		ahd_lock(ahd, &s);
		ahd_intr_enable(ahd, FALSE);
		ahd_unlock(ahd, &s);
		ahd_free(ahd);
	} else
		ahd_list_unlock(&l);
}

static int
ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	char		 buf[80];
	struct		 ahd_softc *ahd;
	ahd_dev_softc_t	 pci;
	struct		 ahd_pci_identity *entry;
	char		*name;
	int		 error;

	/*
	 * Some BIOSen report the same device multiple times.
	 */
	TAILQ_FOREACH(ahd, &ahd_tailq, links) {
		struct pci_dev *probed_pdev;

		probed_pdev = ahd->dev_softc;
		if (probed_pdev->bus->number == pdev->bus->number
		 && probed_pdev->devfn == pdev->devfn)
			break;
	}
	if (ahd != NULL) {
		/* Skip duplicate. */
		return (-ENODEV);
	}

	pci = pdev;
	entry = ahd_find_pci_device(pci);
	if (entry == NULL)
		return (-ENODEV);

	/*
	 * Allocate a softc for this card and
	 * set it up for attachment by our
	 * common detect routine.
	 */
	sprintf(buf, "ahd_pci:%d:%d:%d",
		ahd_get_pci_bus(pci),
		ahd_get_pci_slot(pci),
		ahd_get_pci_function(pci));
	name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
	if (name == NULL)
		return (-ENOMEM);
	strcpy(name, buf);
	ahd = ahd_alloc(NULL, name);
	if (ahd == NULL)
		return (-ENOMEM);
	if (pci_enable_device(pdev)) {
		ahd_free(ahd);
		return (-ENODEV);
	}
	pci_set_master(pdev);

	if (sizeof(dma_addr_t) > 4) {
		uint64_t   memsize;
		const uint64_t mask_39bit = 0x7FFFFFFFFFULL;

		memsize = ahd_linux_get_memsize();

		if (memsize >= 0x8000000000ULL
	 	 && pci_set_dma_mask(pdev, DMA_64BIT_MASK) == 0) {
			ahd->flags |= AHD_64BIT_ADDRESSING;
		} else if (memsize > 0x80000000
			&& pci_set_dma_mask(pdev, mask_39bit) == 0) {
			ahd->flags |= AHD_39BIT_ADDRESSING;
		}
	} else {
		pci_set_dma_mask(pdev, DMA_32BIT_MASK);
	}
	ahd->dev_softc = pci;
	error = ahd_pci_config(ahd, entry);
	if (error != 0) {
		ahd_free(ahd);
		return (-error);
	}
	pci_set_drvdata(pdev, ahd);
	if (aic79xx_detect_complete) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
		ahd_linux_register_host(ahd, &aic79xx_driver_template);
#else
		printf("aic79xx: ignoring PCI device found after "
		       "initialization\n");
		return (-ENODEV);
#endif
	}
	return (0);
}

int
ahd_linux_pci_init(void)
{
	return (pci_module_init(&aic79xx_pci_driver));
}

void
ahd_linux_pci_exit(void)
{
	pci_unregister_driver(&aic79xx_pci_driver);
}

static int
ahd_linux_pci_reserve_io_regions(struct ahd_softc *ahd, u_long *base,
				 u_long *base2)
{
	*base = pci_resource_start(ahd->dev_softc, 0);
	/*
	 * This is really the 3rd bar and should be at index 2,
	 * but the Linux PCI code doesn't know how to "count" 64bit
	 * bars.
	 */
	*base2 = pci_resource_start(ahd->dev_softc, 3);
	if (*base == 0 || *base2 == 0)
		return (ENOMEM);
	if (request_region(*base, 256, "aic79xx") == 0)
		return (ENOMEM);
	if (request_region(*base2, 256, "aic79xx") == 0) {
		release_region(*base2, 256);
		return (ENOMEM);
	}
	return (0);
}

static int
ahd_linux_pci_reserve_mem_region(struct ahd_softc *ahd,
				 u_long *bus_addr,
				 uint8_t __iomem **maddr)
{
	u_long	start;
	u_long	base_page;
	u_long	base_offset;
	int	error;

	if (aic79xx_allow_memio == 0)
		return (ENOMEM);

	if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) != 0)
		return (ENOMEM);

	error = 0;
	start = pci_resource_start(ahd->dev_softc, 1);
	base_page = start & PAGE_MASK;
	base_offset = start - base_page;
	if (start != 0) {
		*bus_addr = start;
		if (request_mem_region(start, 0x1000, "aic79xx") == 0)
			error = ENOMEM;
		if (error == 0) {
			*maddr = ioremap_nocache(base_page, base_offset + 256);
			if (*maddr == NULL) {
				error = ENOMEM;
				release_mem_region(start, 0x1000);
			} else
				*maddr += base_offset;
		}
	} else
		error = ENOMEM;
	return (error);
}

int
ahd_pci_map_registers(struct ahd_softc *ahd)
{
	uint32_t command;
	u_long	 base;
	uint8_t	__iomem *maddr;
	int	 error;

	/*
	 * If its allowed, we prefer memory mapped access.
	 */
	command = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, 4);
	command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN);
	base = 0;
	maddr = NULL;
	error = ahd_linux_pci_reserve_mem_region(ahd, &base, &maddr);
	if (error == 0) {
		ahd->platform_data->mem_busaddr = base;
		ahd->tags[0] = BUS_SPACE_MEMIO;
		ahd->bshs[0].maddr = maddr;
		ahd->tags[1] = BUS_SPACE_MEMIO;
		ahd->bshs[1].maddr = maddr + 0x100;
		ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
				     command | PCIM_CMD_MEMEN, 4);

		if (ahd_pci_test_register_access(ahd) != 0) {

			printf("aic79xx: PCI Device %d:%d:%d "
			       "failed memory mapped test.  Using PIO.\n",
			       ahd_get_pci_bus(ahd->dev_softc),
			       ahd_get_pci_slot(ahd->dev_softc),
			       ahd_get_pci_function(ahd->dev_softc));
			iounmap(maddr);
			release_mem_region(ahd->platform_data->mem_busaddr,
					   0x1000);
			ahd->bshs[0].maddr = NULL;
			maddr = NULL;
		} else
			command |= PCIM_CMD_MEMEN;
	} else if (bootverbose) {
		printf("aic79xx: PCI%d:%d:%d MEM region 0x%lx "
		       "unavailable. Cannot memory map device.\n",
		       ahd_get_pci_bus(ahd->dev_softc),
		       ahd_get_pci_slot(ahd->dev_softc),
		       ahd_get_pci_function(ahd->dev_softc),
		       base);
	}

	if (maddr == NULL) {
		u_long	 base2;

		error = ahd_linux_pci_reserve_io_regions(ahd, &base, &base2);
		if (error == 0) {
			ahd->tags[0] = BUS_SPACE_PIO;
			ahd->tags[1] = BUS_SPACE_PIO;
			ahd->bshs[0].ioport = base;
			ahd->bshs[1].ioport = base2;
			command |= PCIM_CMD_PORTEN;
		} else {
			printf("aic79xx: PCI%d:%d:%d IO regions 0x%lx and 0x%lx"
			       "unavailable. Cannot map device.\n",
			       ahd_get_pci_bus(ahd->dev_softc),
			       ahd_get_pci_slot(ahd->dev_softc),
			       ahd_get_pci_function(ahd->dev_softc),
			       base, base2);
		}
	}
	ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, 4);
	return (error);
}

int
ahd_pci_map_int(struct ahd_softc *ahd)
{
	int error;

	error = request_irq(ahd->dev_softc->irq, ahd_linux_isr,
			    SA_SHIRQ, "aic79xx", ahd);
	if (error == 0)
		ahd->platform_data->irq = ahd->dev_softc->irq;
	
	return (-error);
}

void
ahd_power_state_change(struct ahd_softc *ahd, ahd_power_state new_state)
{
	pci_set_power_state(ahd->dev_softc, new_state);
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Linux driver attachment glue for PCI based U320 controllers.
	3	*
	4	* Copyright (c) 2000-2001 Adaptec Inc.
	5	* All rights reserved.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	* 1. Redistributions of source code must retain the above copyright
	11	* notice, this list of conditions, and the following disclaimer,
	12	* without modification.
	13	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
	14	* substantially similar to the "NO WARRANTY" disclaimer below
	15	* ("Disclaimer") and any redistribution must be conditioned upon
	16	* including a substantially similar Disclaimer requirement for further
	17	* binary redistribution.
	18	* 3. Neither the names of the above-listed copyright holders nor the names
	19	* of any contributors may be used to endorse or promote products derived
	20	* from this software without specific prior written permission.
	21	*
	22	* Alternatively, this software may be distributed under the terms of the
	23	* GNU General Public License ("GPL") version 2 as published by the Free
	24	* Software Foundation.
	25	*
	26	* NO WARRANTY
	27	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	28	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	29	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
	30	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	31	* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	32	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	33	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	34	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	35	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	36	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	37	* POSSIBILITY OF SUCH DAMAGES.
	38	*
	39	* $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm_pci.c#25 $
	40	*/
	41
	42	#include "aic79xx_osm.h"
	43	#include "aic79xx_inline.h"
	44	#include "aic79xx_pci.h"
	45
	46	static int ahd_linux_pci_dev_probe(struct pci_dev *pdev,
	47	const struct pci_device_id *ent);
	48	static int ahd_linux_pci_reserve_io_regions(struct ahd_softc *ahd,
	49	u_long base, u_long base2);
	50	static int ahd_linux_pci_reserve_mem_region(struct ahd_softc *ahd,
	51	u_long *bus_addr,
	52	uint8_t __iomem **maddr);
	53	static void ahd_linux_pci_dev_remove(struct pci_dev *pdev);
	54
	55	/* Define the macro locally since it's different for different class of chips.
	56	*/
	57	#define ID(x) \
	58	ID2C(x), \
	59	ID2C(IDIROC(x))
	60
	61	static struct pci_device_id ahd_linux_pci_id_table[] = {
	62	/* aic7901 based controllers */
	63	ID(ID_AHA_29320A),
	64	ID(ID_AHA_29320ALP),
65	/* aic7902 based controllers */
66	ID(ID_AHA_29320),
67	ID(ID_AHA_29320B),
68	ID(ID_AHA_29320LP),
69	ID(ID_AHA_39320),
70	ID(ID_AHA_39320_B),
71	ID(ID_AHA_39320A),
72	ID(ID_AHA_39320D),
73	ID(ID_AHA_39320D_HP),
74	ID(ID_AHA_39320D_B),
75	ID(ID_AHA_39320D_B_HP),
76	/* Generic chip probes for devices we don't know exactly. */
77	ID16(ID_AIC7901 & ID_9005_GENERIC_MASK),
78	ID(ID_AIC7901A & ID_DEV_VENDOR_MASK),
79	ID16(ID_AIC7902 & ID_9005_GENERIC_MASK),
80	{ 0 }
81	};
82
83	MODULE_DEVICE_TABLE(pci, ahd_linux_pci_id_table);
84
85	struct pci_driver aic79xx_pci_driver = {
86	.name = "aic79xx",
87	.probe = ahd_linux_pci_dev_probe,
88	.remove = ahd_linux_pci_dev_remove,
89	.id_table = ahd_linux_pci_id_table
90	};
91
92	static void
93	ahd_linux_pci_dev_remove(struct pci_dev *pdev)
94	{
95	struct ahd_softc *ahd;
96	u_long l;
97
98	/*
99	* We should be able to just perform
100	* the free directly, but check our
101	* list for extra sanity.
102	*/
103	ahd_list_lock(&l);
104	ahd = ahd_find_softc((struct ahd_softc *)pci_get_drvdata(pdev));
105	if (ahd != NULL) {
106	u_long s;
107
108	TAILQ_REMOVE(&ahd_tailq, ahd, links);
109	ahd_list_unlock(&l);
110	ahd_lock(ahd, &s);
111	ahd_intr_enable(ahd, FALSE);
112	ahd_unlock(ahd, &s);
113	ahd_free(ahd);
114	} else
115	ahd_list_unlock(&l);
116	}
117
118	static int
119	ahd_linux_pci_dev_probe(struct pci_dev pdev, const struct pci_device_id ent)
120	{
121	char buf[80];
122	struct ahd_softc *ahd;
123	ahd_dev_softc_t pci;
124	struct ahd_pci_identity *entry;
125	char *name;
126	int error;
127
128	/*
129	* Some BIOSen report the same device multiple times.
130	*/
131	TAILQ_FOREACH(ahd, &ahd_tailq, links) {
132	struct pci_dev *probed_pdev;
133
134	probed_pdev = ahd->dev_softc;
135	if (probed_pdev->bus->number == pdev->bus->number
136	&& probed_pdev->devfn == pdev->devfn)
137	break;
138	}
139	if (ahd != NULL) {
140	/* Skip duplicate. */
141	return (-ENODEV);
142	}
143
144	pci = pdev;
145	entry = ahd_find_pci_device(pci);
146	if (entry == NULL)
147	return (-ENODEV);
148
149	/*
150	* Allocate a softc for this card and
151	* set it up for attachment by our
152	* common detect routine.
153	*/
154	sprintf(buf, "ahd_pci:%d:%d:%d",
155	ahd_get_pci_bus(pci),
156	ahd_get_pci_slot(pci),
157	ahd_get_pci_function(pci));
158	name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
159	if (name == NULL)
160	return (-ENOMEM);
161	strcpy(name, buf);
162	ahd = ahd_alloc(NULL, name);
163	if (ahd == NULL)
164	return (-ENOMEM);
165	if (pci_enable_device(pdev)) {
166	ahd_free(ahd);
167	return (-ENODEV);
168	}
169	pci_set_master(pdev);
170
171	if (sizeof(dma_addr_t) > 4) {
172	uint64_t memsize;
173	const uint64_t mask_39bit = 0x7FFFFFFFFFULL;
174
175	memsize = ahd_linux_get_memsize();
176
177	if (memsize >= 0x8000000000ULL
178	&& pci_set_dma_mask(pdev, DMA_64BIT_MASK) == 0) {
179	ahd->flags \|= AHD_64BIT_ADDRESSING;
1da177e4 LT	180	} else if (memsize > 0x80000000
	181	&& pci_set_dma_mask(pdev, mask_39bit) == 0) {
	182	ahd->flags \|= AHD_39BIT_ADDRESSING;
1da177e4 LT	183	}
	184	} else {
	185	pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1da177e4 LT	186	}
	187	ahd->dev_softc = pci;
	188	error = ahd_pci_config(ahd, entry);
	189	if (error != 0) {
	190	ahd_free(ahd);
	191	return (-error);
	192	}
	193	pci_set_drvdata(pdev, ahd);
	194	if (aic79xx_detect_complete) {
	195	#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
	196	ahd_linux_register_host(ahd, &aic79xx_driver_template);
	197	#else
	198	printf("aic79xx: ignoring PCI device found after "
	199	"initialization\n");
	200	return (-ENODEV);
	201	#endif
	202	}
	203	return (0);
	204	}
	205
	206	int
	207	ahd_linux_pci_init(void)
	208	{
	209	return (pci_module_init(&aic79xx_pci_driver));
	210	}
	211
	212	void
	213	ahd_linux_pci_exit(void)
	214	{
	215	pci_unregister_driver(&aic79xx_pci_driver);
	216	}
	217
	218	static int
	219	ahd_linux_pci_reserve_io_regions(struct ahd_softc ahd, u_long base,
	220	u_long *base2)
	221	{
	222	*base = pci_resource_start(ahd->dev_softc, 0);
	223	/*
	224	* This is really the 3rd bar and should be at index 2,
	225	* but the Linux PCI code doesn't know how to "count" 64bit
	226	* bars.
	227	*/
	228	*base2 = pci_resource_start(ahd->dev_softc, 3);
	229	if (base == 0 \|\| base2 == 0)
	230	return (ENOMEM);
	231	if (request_region(*base, 256, "aic79xx") == 0)
	232	return (ENOMEM);
	233	if (request_region(*base2, 256, "aic79xx") == 0) {
	234	release_region(*base2, 256);
	235	return (ENOMEM);
	236	}
	237	return (0);
	238	}
	239
	240	static int
	241	ahd_linux_pci_reserve_mem_region(struct ahd_softc *ahd,
	242	u_long *bus_addr,
	243	uint8_t __iomem **maddr)
	244	{
	245	u_long start;
	246	u_long base_page;
	247	u_long base_offset;
	248	int error;
	249
250	if (aic79xx_allow_memio == 0)
251	return (ENOMEM);
252
253	if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) != 0)
254	return (ENOMEM);
255
256	error = 0;
257	start = pci_resource_start(ahd->dev_softc, 1);
258	base_page = start & PAGE_MASK;
259	base_offset = start - base_page;
260	if (start != 0) {
261	*bus_addr = start;
262	if (request_mem_region(start, 0x1000, "aic79xx") == 0)
263	error = ENOMEM;
264	if (error == 0) {
265	*maddr = ioremap_nocache(base_page, base_offset + 256);
266	if (*maddr == NULL) {
267	error = ENOMEM;
268	release_mem_region(start, 0x1000);
269	} else
270	*maddr += base_offset;
271	}
272	} else
273	error = ENOMEM;
274	return (error);
275	}
276
277	int
278	ahd_pci_map_registers(struct ahd_softc *ahd)
279	{
280	uint32_t command;
281	u_long base;
282	uint8_t __iomem *maddr;
283	int error;
284
285	/*
286	* If its allowed, we prefer memory mapped access.
287	*/
288	command = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, 4);
289	command &= ~(PCIM_CMD_PORTEN\|PCIM_CMD_MEMEN);
290	base = 0;
291	maddr = NULL;
292	error = ahd_linux_pci_reserve_mem_region(ahd, &base, &maddr);
293	if (error == 0) {
294	ahd->platform_data->mem_busaddr = base;
295	ahd->tags[0] = BUS_SPACE_MEMIO;
296	ahd->bshs[0].maddr = maddr;
297	ahd->tags[1] = BUS_SPACE_MEMIO;
298	ahd->bshs[1].maddr = maddr + 0x100;
299	ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
300	command \| PCIM_CMD_MEMEN, 4);
301
302	if (ahd_pci_test_register_access(ahd) != 0) {
303
304	printf("aic79xx: PCI Device %d:%d:%d "
305	"failed memory mapped test. Using PIO.\n",
306	ahd_get_pci_bus(ahd->dev_softc),
307	ahd_get_pci_slot(ahd->dev_softc),
308	ahd_get_pci_function(ahd->dev_softc));
309	iounmap(maddr);
310	release_mem_region(ahd->platform_data->mem_busaddr,
311	0x1000);
312	ahd->bshs[0].maddr = NULL;
313	maddr = NULL;
314	} else
315	command \|= PCIM_CMD_MEMEN;
316	} else if (bootverbose) {
317	printf("aic79xx: PCI%d:%d:%d MEM region 0x%lx "
318	"unavailable. Cannot memory map device.\n",
319	ahd_get_pci_bus(ahd->dev_softc),
320	ahd_get_pci_slot(ahd->dev_softc),
321	ahd_get_pci_function(ahd->dev_softc),
322	base);
323	}
324
325	if (maddr == NULL) {
326	u_long base2;
327
328	error = ahd_linux_pci_reserve_io_regions(ahd, &base, &base2);
329	if (error == 0) {
330	ahd->tags[0] = BUS_SPACE_PIO;
331	ahd->tags[1] = BUS_SPACE_PIO;
332	ahd->bshs[0].ioport = base;
333	ahd->bshs[1].ioport = base2;
334	command \|= PCIM_CMD_PORTEN;
335	} else {
336	printf("aic79xx: PCI%d:%d:%d IO regions 0x%lx and 0x%lx"
337	"unavailable. Cannot map device.\n",
338	ahd_get_pci_bus(ahd->dev_softc),
339	ahd_get_pci_slot(ahd->dev_softc),
340	ahd_get_pci_function(ahd->dev_softc),
341	base, base2);
342	}
343	}
344	ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, 4);
345	return (error);
346	}
347
348	int
349	ahd_pci_map_int(struct ahd_softc *ahd)
350	{
351	int error;
352
353	error = request_irq(ahd->dev_softc->irq, ahd_linux_isr,
354	SA_SHIRQ, "aic79xx", ahd);
355	if (error == 0)
356	ahd->platform_data->irq = ahd->dev_softc->irq;
357
358	return (-error);
359	}
360
361	void
362	ahd_power_state_change(struct ahd_softc *ahd, ahd_power_state new_state)
363	{
364	pci_set_power_state(ahd->dev_softc, new_state);
365	}