-ide_hwif_t * ide_find_port(unsigned long base)
-{
- ide_hwif_t *hwif;
- int i;
-
- for (i = 0; i < MAX_HWIFS; i++) {
- hwif = &ide_hwifs[i];
- if (hwif->io_ports[IDE_DATA_OFFSET] == base)
- goto found;
- }
-
- for (i = 0; i < MAX_HWIFS; i++) {
- hwif = &ide_hwifs[i];
- if (hwif->io_ports[IDE_DATA_OFFSET] == 0)
- goto found;
- }
-
- hwif = NULL;
-found:
- return hwif;
-}
-
-EXPORT_SYMBOL_GPL(ide_find_port);
-
-static struct resource* hwif_request_region(ide_hwif_t *hwif,
- unsigned long addr, int num)
-{
- struct resource *res = request_region(addr, num, hwif->name);
-
- if (!res)
- printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
- hwif->name, addr, addr+num-1);
- return res;
-}
-
-/**
- * ide_hwif_request_regions - request resources for IDE
- * @hwif: interface to use
- *
- * Requests all the needed resources for an interface.
- * Right now core IDE code does this work which is deeply wrong.
- * MMIO leaves it to the controller driver,
- * PIO will migrate this way over time.
- */
-
-int ide_hwif_request_regions(ide_hwif_t *hwif)
-{
- unsigned long addr;
- unsigned int i;
-
- if (hwif->mmio)
- return 0;
- addr = hwif->io_ports[IDE_CONTROL_OFFSET];
- if (addr && !hwif_request_region(hwif, addr, 1))
- goto control_region_busy;
- hwif->straight8 = 0;
- addr = hwif->io_ports[IDE_DATA_OFFSET];
- if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
- if (!hwif_request_region(hwif, addr, 8))
- goto data_region_busy;
- hwif->straight8 = 1;
- return 0;
- }
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- addr = hwif->io_ports[i];
- if (!hwif_request_region(hwif, addr, 1)) {
- while (--i)
- release_region(addr, 1);
- goto data_region_busy;
- }
- }
- return 0;
-
-data_region_busy:
- addr = hwif->io_ports[IDE_CONTROL_OFFSET];
- if (addr)
- release_region(addr, 1);
-control_region_busy:
- /* If any errors are return, we drop the hwif interface. */
- return -EBUSY;
-}
-
-/**
- * ide_hwif_release_regions - free IDE resources
- *
- * Note that we only release the standard ports,
- * and do not even try to handle any extra ports
- * allocated for weird IDE interface chipsets.
- *
- * Note also that we don't yet handle mmio resources here. More
- * importantly our caller should be doing this so we need to
- * restructure this as a helper function for drivers.
- */
-
-void ide_hwif_release_regions(ide_hwif_t *hwif)
-{
- u32 i = 0;
-
- if (hwif->mmio)
- return;
- if (hwif->io_ports[IDE_CONTROL_OFFSET])
- release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
- if (hwif->straight8) {
- release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
- return;
- }
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
- if (hwif->io_ports[i])
- release_region(hwif->io_ports[i], 1);
-}
-
-/**
- * ide_hwif_restore - restore hwif to template
- * @hwif: hwif to update
- * @tmp_hwif: template
- *
- * Restore hwif to a previous state by copying most settings
- * from the template.
- */
-
-static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
-{
- hwif->hwgroup = tmp_hwif->hwgroup;
-
- hwif->gendev.parent = tmp_hwif->gendev.parent;
-
- hwif->proc = tmp_hwif->proc;
-
- hwif->major = tmp_hwif->major;
- hwif->straight8 = tmp_hwif->straight8;
- hwif->bus_state = tmp_hwif->bus_state;
-
- hwif->host_flags = tmp_hwif->host_flags;
-
- hwif->pio_mask = tmp_hwif->pio_mask;
-
- hwif->ultra_mask = tmp_hwif->ultra_mask;
- hwif->mwdma_mask = tmp_hwif->mwdma_mask;
- hwif->swdma_mask = tmp_hwif->swdma_mask;
-
- hwif->cbl = tmp_hwif->cbl;
-
- hwif->chipset = tmp_hwif->chipset;
- hwif->hold = tmp_hwif->hold;
-
- hwif->dev = tmp_hwif->dev;
-
-#ifdef CONFIG_BLK_DEV_IDEPCI
- hwif->cds = tmp_hwif->cds;
-#endif
-
- hwif->set_pio_mode = tmp_hwif->set_pio_mode;
- hwif->set_dma_mode = tmp_hwif->set_dma_mode;
- hwif->mdma_filter = tmp_hwif->mdma_filter;
- hwif->udma_filter = tmp_hwif->udma_filter;
- hwif->selectproc = tmp_hwif->selectproc;
- hwif->reset_poll = tmp_hwif->reset_poll;
- hwif->pre_reset = tmp_hwif->pre_reset;
- hwif->resetproc = tmp_hwif->resetproc;
- hwif->maskproc = tmp_hwif->maskproc;
- hwif->quirkproc = tmp_hwif->quirkproc;
- hwif->busproc = tmp_hwif->busproc;
-
- hwif->ata_input_data = tmp_hwif->ata_input_data;
- hwif->ata_output_data = tmp_hwif->ata_output_data;
- hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
- hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
-
- hwif->dma_host_set = tmp_hwif->dma_host_set;
- hwif->dma_setup = tmp_hwif->dma_setup;
- hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd;
- hwif->dma_start = tmp_hwif->dma_start;
- hwif->ide_dma_end = tmp_hwif->ide_dma_end;
- hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
- hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq;
- hwif->dma_lost_irq = tmp_hwif->dma_lost_irq;
- hwif->dma_timeout = tmp_hwif->dma_timeout;
-
- hwif->OUTB = tmp_hwif->OUTB;
- hwif->OUTBSYNC = tmp_hwif->OUTBSYNC;
- hwif->OUTW = tmp_hwif->OUTW;
- hwif->OUTSW = tmp_hwif->OUTSW;
- hwif->OUTSL = tmp_hwif->OUTSL;
-
- hwif->INB = tmp_hwif->INB;
- hwif->INW = tmp_hwif->INW;
- hwif->INSW = tmp_hwif->INSW;
- hwif->INSL = tmp_hwif->INSL;
-
- hwif->sg_max_nents = tmp_hwif->sg_max_nents;
-
- hwif->mmio = tmp_hwif->mmio;
- hwif->rqsize = tmp_hwif->rqsize;
-
-#ifndef CONFIG_BLK_DEV_IDECS
- hwif->irq = tmp_hwif->irq;
-#endif
-
- hwif->dma_base = tmp_hwif->dma_base;
- hwif->dma_command = tmp_hwif->dma_command;
- hwif->dma_vendor1 = tmp_hwif->dma_vendor1;
- hwif->dma_status = tmp_hwif->dma_status;
- hwif->dma_vendor3 = tmp_hwif->dma_vendor3;
- hwif->dma_prdtable = tmp_hwif->dma_prdtable;
-
- hwif->config_data = tmp_hwif->config_data;
- hwif->select_data = tmp_hwif->select_data;
- hwif->extra_base = tmp_hwif->extra_base;
- hwif->extra_ports = tmp_hwif->extra_ports;
-
- hwif->hwif_data = tmp_hwif->hwif_data;
-}
-