[libata] remove dependence on PCI

Most of this work was done by "Mat Loikkanen" <Mat.Loikkanen@synopsys.com>.

* use struct device rather than struct pci_dev
* use generic DMA routines (dma_xxx) and generic struct device
  routines (dev_xxx)
* isolate PCI-specific helpers inside CONFIG_PCI

1 files changed, 30 insertions, 14 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 79145d1a807a..605e0a728c0e 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -25,6 +25,7 @@
 
 #include <linux/delay.h>
 #include <linux/interrupt.h>
+#include <linux/pci.h>
 #include <asm/io.h>
 #include <linux/ata.h>
 #include <linux/workqueue.h>
@@ -68,6 +69,12 @@
 /* defines only for the constants which don't work well as enums */
 #define ATA_TAG_POISON		0xfafbfcfdU
 
+/* move to PCI layer? */
+static inline struct device *pci_dev_to_dev(struct pci_dev *pdev)
+{
+	return &pdev->dev;
+}
+
 enum {
 	/* various global constants */
 	LIBATA_MAX_PRD		= ATA_MAX_PRD / 2,
@@ -184,7 +191,7 @@ struct ata_ioports {
 
 struct ata_probe_ent {
 	struct list_head	node;
-	struct pci_dev		*pdev;
+	struct device 		*dev;
 	struct ata_port_operations	*port_ops;
 	Scsi_Host_Template	*sht;
 	struct ata_ioports	port[ATA_MAX_PORTS];
@@ -203,7 +210,7 @@ struct ata_probe_ent {
 
 struct ata_host_set {
 	spinlock_t		lock;
-	struct pci_dev		*pdev;
+	struct device 		*dev;
 	unsigned long		irq;
 	void __iomem		*mmio_base;
 	unsigned int		n_ports;
@@ -226,7 +233,7 @@ struct ata_queued_cmd {
 	unsigned int		tag;
 	unsigned int		n_elem;
 
-	int			pci_dma_dir;
+	int			dma_dir;
 
 	unsigned int		nsect;
 	unsigned int		cursect;
@@ -361,12 +368,6 @@ struct ata_port_info {
 	struct ata_port_operations	*port_ops;
 };
 
-struct pci_bits {
-	unsigned int		reg;	/* PCI config register to read */
-	unsigned int		width;	/* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
-	unsigned long		mask;
-	unsigned long		val;
-};
 
 extern void ata_port_probe(struct ata_port *);
 extern void __sata_phy_reset(struct ata_port *ap);
@@ -374,9 +375,11 @@ extern void sata_phy_reset(struct ata_port *ap);
 extern void ata_bus_reset(struct ata_port *ap);
 extern void ata_port_disable(struct ata_port *);
 extern void ata_std_ports(struct ata_ioports *ioaddr);
+#ifdef CONFIG_PCI
 extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
 			     unsigned int n_ports);
 extern void ata_pci_remove_one (struct pci_dev *pdev);
+#endif /* CONFIG_PCI */
 extern int ata_device_add(struct ata_probe_ent *ent);
 extern int ata_scsi_detect(Scsi_Host_Template *sht);
 extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
@@ -398,10 +401,6 @@ extern void ata_exec_command(struct ata_port *ap, struct ata_taskfile *tf);
 extern int ata_port_start (struct ata_port *ap);
 extern void ata_port_stop (struct ata_port *ap);
 extern irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
-extern struct ata_probe_ent *
-ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port);
-extern struct ata_probe_ent *
-ata_pci_init_legacy_mode(struct pci_dev *pdev, struct ata_port_info **port);
 extern void ata_qc_prep(struct ata_queued_cmd *qc);
 extern int ata_qc_issue_prot(struct ata_queued_cmd *qc);
 extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf,
@@ -414,7 +413,6 @@ extern void ata_dev_id_string(u16 *id, unsigned char *s,
 extern void ata_bmdma_setup (struct ata_queued_cmd *qc);
 extern void ata_bmdma_start (struct ata_queued_cmd *qc);
 extern void ata_bmdma_irq_clear(struct ata_port *ap);
-extern int pci_test_config_bits(struct pci_dev *pdev, struct pci_bits *bits);
 extern void ata_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat);
 extern void ata_eng_timeout(struct ata_port *ap);
 extern void ata_scsi_simulate(u16 *id, struct scsi_cmnd *cmd,
@@ -424,6 +422,24 @@ extern int ata_std_bios_param(struct scsi_device *sdev,
 			      sector_t capacity, int geom[]);
 extern int ata_scsi_slave_config(struct scsi_device *sdev);
 
+
+#ifdef CONFIG_PCI
+struct pci_bits {
+	unsigned int		reg;	/* PCI config register to read */
+	unsigned int		width;	/* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
+	unsigned long		mask;
+	unsigned long		val;
+};
+
+extern struct ata_probe_ent *
+ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port);
+extern struct ata_probe_ent *
+ata_pci_init_legacy_mode(struct pci_dev *pdev, struct ata_port_info **port);
+extern int pci_test_config_bits(struct pci_dev *pdev, struct pci_bits *bits);
+
+#endif /* CONFIG_PCI */
+
+
 static inline unsigned int ata_tag_valid(unsigned int tag)
 {
 	return (tag < ATA_MAX_QUEUE) ? 1 : 0;