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Linux/drivers/ide/delkin_cb.c

  1 /*
  2  *  Created 20 Oct 2004 by Mark Lord
  3  *
  4  *  Basic support for Delkin/ASKA/Workbit Cardbus CompactFlash adapter
  5  *
  6  *  Modeled after the 16-bit PCMCIA driver: ide-cs.c
  7  *
  8  *  This is slightly peculiar, in that it is a PCI driver,
  9  *  but is NOT an IDE PCI driver -- the IDE layer does not directly
 10  *  support hot insertion/removal of PCI interfaces, so this driver
 11  *  is unable to use the IDE PCI interfaces.  Instead, it uses the
 12  *  same interfaces as the ide-cs (PCMCIA) driver uses.
 13  *  On the plus side, the driver is also smaller/simpler this way.
 14  *
 15  *  This file is subject to the terms and conditions of the GNU General Public
 16  *  License.  See the file COPYING in the main directory of this archive for
 17  *  more details.
 18  */
 19 
 20 #include <linux/types.h>
 21 #include <linux/module.h>
 22 #include <linux/ide.h>
 23 #include <linux/init.h>
 24 #include <linux/pci.h>
 25 
 26 #include <asm/io.h>
 27 
 28 /*
 29  * No chip documentation has yet been found,
 30  * so these configuration values were pulled from
 31  * a running Win98 system using "debug".
 32  * This gives around 3MByte/second read performance,
 33  * which is about 2/3 of what the chip is capable of.
 34  *
 35  * There is also a 4KByte mmio region on the card,
 36  * but its purpose has yet to be reverse-engineered.
 37  */
 38 static const u8 setup[] = {
 39         0x00, 0x05, 0xbe, 0x01, 0x20, 0x8f, 0x00, 0x00,
 40         0xa4, 0x1f, 0xb3, 0x1b, 0x00, 0x00, 0x00, 0x80,
 41         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 42         0x00, 0x00, 0x00, 0x00, 0xa4, 0x83, 0x02, 0x13,
 43 };
 44 
 45 static const struct ide_port_ops delkin_cb_port_ops = {
 46         .quirkproc              = ide_undecoded_slave,
 47 };
 48 
 49 static int delkin_cb_init_chipset(struct pci_dev *dev)
 50 {
 51         unsigned long base = pci_resource_start(dev, 0);
 52         int i;
 53 
 54         outb(0x02, base + 0x1e);        /* set nIEN to block interrupts */
 55         inb(base + 0x17);               /* read status to clear interrupts */
 56 
 57         for (i = 0; i < sizeof(setup); ++i) {
 58                 if (setup[i])
 59                         outb(setup[i], base + i);
 60         }
 61 
 62         return 0;
 63 }
 64 
 65 static const struct ide_port_info delkin_cb_port_info = {
 66         .port_ops               = &delkin_cb_port_ops,
 67         .host_flags             = IDE_HFLAG_IO_32BIT | IDE_HFLAG_UNMASK_IRQS |
 68                                   IDE_HFLAG_NO_DMA,
 69         .irq_flags              = IRQF_SHARED,
 70         .init_chipset           = delkin_cb_init_chipset,
 71         .chipset                = ide_pci,
 72 };
 73 
 74 static int delkin_cb_probe(struct pci_dev *dev, const struct pci_device_id *id)
 75 {
 76         struct ide_host *host;
 77         unsigned long base;
 78         int rc;
 79         struct ide_hw hw, *hws[] = { &hw };
 80 
 81         rc = pci_enable_device(dev);
 82         if (rc) {
 83                 printk(KERN_ERR "delkin_cb: pci_enable_device failed (%d)\n", rc);
 84                 return rc;
 85         }
 86         rc = pci_request_regions(dev, "delkin_cb");
 87         if (rc) {
 88                 printk(KERN_ERR "delkin_cb: pci_request_regions failed (%d)\n", rc);
 89                 pci_disable_device(dev);
 90                 return rc;
 91         }
 92         base = pci_resource_start(dev, 0);
 93 
 94         delkin_cb_init_chipset(dev);
 95 
 96         memset(&hw, 0, sizeof(hw));
 97         ide_std_init_ports(&hw, base + 0x10, base + 0x1e);
 98         hw.irq = dev->irq;
 99         hw.dev = &dev->dev;
100 
101         rc = ide_host_add(&delkin_cb_port_info, hws, 1, &host);
102         if (rc)
103                 goto out_disable;
104 
105         pci_set_drvdata(dev, host);
106 
107         return 0;
108 
109 out_disable:
110         pci_release_regions(dev);
111         pci_disable_device(dev);
112         return rc;
113 }
114 
115 static void
116 delkin_cb_remove (struct pci_dev *dev)
117 {
118         struct ide_host *host = pci_get_drvdata(dev);
119 
120         ide_host_remove(host);
121 
122         pci_release_regions(dev);
123         pci_disable_device(dev);
124 }
125 
126 #ifdef CONFIG_PM
127 static int delkin_cb_suspend(struct pci_dev *dev, pm_message_t state)
128 {
129         pci_save_state(dev);
130         pci_disable_device(dev);
131         pci_set_power_state(dev, pci_choose_state(dev, state));
132 
133         return 0;
134 }
135 
136 static int delkin_cb_resume(struct pci_dev *dev)
137 {
138         struct ide_host *host = pci_get_drvdata(dev);
139         int rc;
140 
141         pci_set_power_state(dev, PCI_D0);
142 
143         rc = pci_enable_device(dev);
144         if (rc)
145                 return rc;
146 
147         pci_restore_state(dev);
148         pci_set_master(dev);
149 
150         if (host->init_chipset)
151                 host->init_chipset(dev);
152 
153         return 0;
154 }
155 #else
156 #define delkin_cb_suspend NULL
157 #define delkin_cb_resume NULL
158 #endif
159 
160 static struct pci_device_id delkin_cb_pci_tbl[] = {
161         { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
162         { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
163         { 0, },
164 };
165 MODULE_DEVICE_TABLE(pci, delkin_cb_pci_tbl);
166 
167 static struct pci_driver delkin_cb_pci_driver = {
168         .name           = "Delkin-ASKA-Workbit Cardbus IDE",
169         .id_table       = delkin_cb_pci_tbl,
170         .probe          = delkin_cb_probe,
171         .remove         = delkin_cb_remove,
172         .suspend        = delkin_cb_suspend,
173         .resume         = delkin_cb_resume,
174 };
175 
176 module_pci_driver(delkin_cb_pci_driver);
177 
178 MODULE_AUTHOR("Mark Lord");
179 MODULE_DESCRIPTION("Basic support for Delkin/ASKA/Workbit Cardbus IDE");
180 MODULE_LICENSE("GPL");
181 
182 

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