Staging: add phison ATA driver to the tree

It doesn't build properly yet as it is against an older kernel version.
That will be fixed up in patches following this.

From: Evan Ko <evan_ko@phison.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/phison/phison.c b/drivers/staging/phison/phison.c
new file mode 100644 (file)
index 0000000..571d03d
--- /dev/null
+++ b/drivers/staging/phison/phison.c
@@ -0,0 +1,227 @@
+/*
+ * Copyright (C) 2006          Red Hat <evan_ko@phison.com>
+ *
+ *  May be copied or modified under the terms of the GNU General Public License
+ *
+ *  [Modify History]
+ *   #0001, Evan, 2008.10.22, V0.00, New release.
+ *   #0002, Evan, 2008.11.01, V0.90, Test Work In Ubuntu Linux 8.04.
+ *   #0003, Evan, 2008.01.08, V0.91, Change Name "PCIE-SSD" to "E-BOX".
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+#include <linux/ata.h>
+
+#define PHISON_DEBUG
+
+#define DRV_NAME       "PHISON E-BOX" //#0003
+#define DRV_VERSION     "0.91" //#0003
+
+#define PCI_VENDOR_ID_PHISON   0x1987
+#define PCI_DEVICE_ID_PS5000   0x5000
+
+int phison_pre_reset(struct ata_link *link, unsigned long deadline)
+{
+       int ret;
+       struct ata_port *ap = link->ap;
+       ap->cbl = ATA_CBL_NONE;
+       ret = ata_std_prereset(link, deadline);
+       #ifdef PHISON_DEBUG
+       printk("****** phison_pre_reset(), ret = %x ******\n", ret);
+       #endif
+       return ret;
+}
+
+void phison_error_handler(struct ata_port *ap)
+{
+       #ifdef PHISON_DEBUG
+       printk("****** phison_error_handler() ******\n");
+       #endif
+       return ata_bmdma_drive_eh(ap, phison_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
+}
+
+struct scsi_host_template phison_sht = {
+       .module                 = THIS_MODULE,
+       .name                   = DRV_NAME,
+       .ioctl                  = ata_scsi_ioctl,
+       .queuecommand   = ata_scsi_queuecmd,
+       .can_queue              = ATA_DEF_QUEUE,
+       .this_id                = ATA_SHT_THIS_ID,
+       .sg_tablesize   = LIBATA_MAX_PRD,
+       .cmd_per_lun    = ATA_SHT_CMD_PER_LUN,
+       .emulated               = ATA_SHT_EMULATED,
+       .use_clustering = ATA_SHT_USE_CLUSTERING,
+       .proc_name              = DRV_NAME,
+       .dma_boundary   = ATA_DMA_BOUNDARY,
+       .slave_configure        = ata_scsi_slave_config,
+       .slave_destroy  = ata_scsi_slave_destroy,
+       /* Use standard CHS mapping rules */
+       .bios_param             = ata_std_bios_param,
+};
+
+const struct ata_port_operations phison_ops = {
+       /* Task file is PCI ATA format, use helpers */
+       .tf_load                = ata_tf_load,
+       .tf_read                = ata_tf_read,
+       .check_status   = ata_check_status,
+       .exec_command   = ata_exec_command,
+       .dev_select             = ata_std_dev_select,
+
+       .freeze                 = ata_bmdma_freeze,
+       .thaw                   = ata_bmdma_thaw,
+       .error_handler  = phison_error_handler,
+       .post_internal_cmd      = ata_bmdma_post_internal_cmd,
+
+       /* BMDMA handling is PCI ATA format, use helpers */
+       .bmdma_setup    = ata_bmdma_setup,
+       .bmdma_start    = ata_bmdma_start,
+       .bmdma_stop             = ata_bmdma_stop,
+       .bmdma_status           = ata_bmdma_status,
+       .qc_prep                = ata_qc_prep,
+       .qc_issue               = ata_qc_issue_prot,
+       .data_xfer              = ata_data_xfer,
+
+       /* IRQ-related hooks */
+       .irq_handler            = ata_interrupt,
+       .irq_clear              = ata_bmdma_irq_clear,
+       .irq_on                 = ata_irq_on,
+
+       /* Generic PATA PCI ATA helpers */
+       .port_start             = ata_port_start,
+};
+
+int phison_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+       struct ata_port_info info = {
+               .sht            = &phison_sht,
+               .flags  = ATA_FLAG_NO_ATAPI,
+
+               .pio_mask       = 0x1f,
+               .mwdma_mask     = 0x07,
+               .udma_mask      = ATA_UDMA5,
+
+               .port_ops       = &phison_ops,
+       };
+       int ret;
+
+       const struct ata_port_info *ppi[] = { &info, NULL };
+
+       ret = ata_pci_init_one(pdev, ppi);
+
+       #ifdef PHISON_DEBUG
+       printk("****** phison_init_one(), ret = %x ******\n", ret);
+       #endif
+
+       return ret;
+
+}
+
+struct pci_device_id phison_pci_tbl[] = {
+       { PCI_VENDOR_ID_PHISON, PCI_DEVICE_ID_PS5000, PCI_ANY_ID, PCI_ANY_ID,
+         PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 },
+       { 0, },
+};
+
+MODULE_DEVICE_TABLE(pci, phison_pci_tbl);
+
+struct pci_driver phison_pci_driver = {
+       .name           = DRV_NAME,
+       .id_table       = phison_pci_tbl,
+       .probe          = phison_init_one,
+       .remove         = ata_pci_remove_one,
+#ifdef CONFIG_PM //haven't test it.
+       .suspend        = ata_pci_device_suspend,
+       .resume         = ata_pci_device_resume,
+#endif
+};
+
+int phison_ide_init(void)
+{
+#if 0 //For Test.
+       struct pci_dev *pci_dev = NULL;
+       struct pci_dev *ps5k_dev = NULL;
+       int i, ret;
+       u16 vid, pid;
+       u32 addr1,addr2,addr3, addr4,addr5,addr6;
+
+       printk("****** phison_ide_init ******\n");
+
+       i = 0;
+
+       while(1)
+       {
+               pci_dev = pci_find_device(PCI_ANY_ID,PCI_ANY_ID, pci_dev);
+
+               if(pci_dev!=NULL)
+               {
+                       pci_read_config_word(pci_dev, 0, &pid);
+                       pci_read_config_word(pci_dev, 2, &vid);
+                       pci_read_config_dword(pci_dev, 16, &addr1);
+                       pci_read_config_dword(pci_dev, 16, &addr1);
+                       pci_read_config_dword(pci_dev, 16, &addr1);
+                       pci_read_config_dword(pci_dev, 16, &addr1);
+                       pci_read_config_dword(pci_dev, 20, &addr2);
+                       pci_read_config_dword(pci_dev, 24, &addr3);
+                       pci_read_config_dword(pci_dev, 28, &addr4);
+                       pci_read_config_dword(pci_dev, 32, &addr5);
+                       pci_read_config_dword(pci_dev, 36, &addr6);
+
+                       printk("****** <0x%02x>, %x, %x, %x,%x,%x,%x,%x,%x ******\n", i, pid, vid, addr1, addr2, addr3, addr4,addr5,addr6);
+                       i++;
+
+                       if((pid==PCI_VENDOR_ID_PHISON)&&(vid==PCI_DEVICE_ID_PS5000)) ps5k_dev = pci_dev;
+               }
+               else
+               {
+                       if(i==0) printk("****** no pci device found ******\n");
+                       break;
+               }
+       }
+
+       if(ps5k_dev!=NULL)
+       {
+               ret = pci_register_driver(&phison_pci_driver);
+               printk("****** PS5000 found, Ret = %x ******\n", ret);
+               return true;
+       }
+
+       printk("****** PS5000 not found ******\n");
+       return false;
+#else
+       int ret;
+
+       ret = pci_register_driver(&phison_pci_driver);
+
+       #ifdef PHISON_DEBUG
+       printk("****** phison_ide_init(), ret = %x ******\n", ret);
+       #endif
+
+       return ret;
+#endif
+
+
+}
+
+void phison_ide_exit(void)
+{
+       #ifdef PHISON_DEBUG
+       printk("****** phison_ide_exit() ******\n");
+       #endif
+       pci_unregister_driver(&phison_pci_driver);
+}
+
+module_init(phison_ide_init);
+module_exit(phison_ide_exit);
+
+MODULE_AUTHOR("Evan Ko");
+MODULE_DESCRIPTION("PCIE driver module for PHISON PS5000 E-BOX");//#0003
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);