fixup-rbtx4927.c (22b1d707ffc99faebd86257ad19d5bb9fc624734) fixup-rbtx4927.c (89d63fe179520b11f54de1f26755b7444c79e73a)
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * Board specific pci fixups for the Toshiba rbtx4927
5 *
6 * Copyright 2001 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc.
8 * ppopov@mvista.com or source@mvista.com

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28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * You should have received a copy of the GNU General Public License along
32 * with this program; if not, write to the Free Software Foundation, Inc.,
33 * 675 Mass Ave, Cambridge, MA 02139, USA.
34 */
35#include <linux/types.h>
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * Board specific pci fixups for the Toshiba rbtx4927
5 *
6 * Copyright 2001 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc.
8 * ppopov@mvista.com or source@mvista.com

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28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * You should have received a copy of the GNU General Public License along
32 * with this program; if not, write to the Free Software Foundation, Inc.,
33 * 675 Mass Ave, Cambridge, MA 02139, USA.
34 */
35#include <linux/types.h>
36#include <linux/pci.h>
37#include <linux/kernel.h>
38#include <linux/init.h>
36#include <asm/txx9/pci.h>
37#include <asm/txx9/rbtx4927.h>
39
38
40#include <asm/txx9/tx4927.h>
41
42#undef DEBUG
43#ifdef DEBUG
44#define DBG(x...) printk(x)
45#else
46#define DBG(x...)
47#endif
48
49/* look up table for backplane pci irq for slots 17-20 by pin # */
50static unsigned char backplane_pci_irq[4][4] = {
51 /* PJ6 SLOT: 17, PIN: 1 */ {TX4927_IRQ_IOC_PCIA,
52 /* PJ6 SLOT: 17, PIN: 2 */
53 TX4927_IRQ_IOC_PCIB,
54 /* PJ6 SLOT: 17, PIN: 3 */
55 TX4927_IRQ_IOC_PCIC,
56 /* PJ6 SLOT: 17, PIN: 4 */
57 TX4927_IRQ_IOC_PCID},
58 /* SB SLOT: 18, PIN: 1 */ {TX4927_IRQ_IOC_PCIB,
59 /* SB SLOT: 18, PIN: 2 */
60 TX4927_IRQ_IOC_PCIC,
61 /* SB SLOT: 18, PIN: 3 */
62 TX4927_IRQ_IOC_PCID,
63 /* SB SLOT: 18, PIN: 4 */
64 TX4927_IRQ_IOC_PCIA},
65 /* PJ5 SLOT: 19, PIN: 1 */ {TX4927_IRQ_IOC_PCIC,
66 /* PJ5 SLOT: 19, PIN: 2 */
67 TX4927_IRQ_IOC_PCID,
68 /* PJ5 SLOT: 19, PIN: 3 */
69 TX4927_IRQ_IOC_PCIA,
70 /* PJ5 SLOT: 19, PIN: 4 */
71 TX4927_IRQ_IOC_PCIB},
72 /* PJ4 SLOT: 20, PIN: 1 */ {TX4927_IRQ_IOC_PCID,
73 /* PJ4 SLOT: 20, PIN: 2 */
74 TX4927_IRQ_IOC_PCIA,
75 /* PJ4 SLOT: 20, PIN: 3 */
76 TX4927_IRQ_IOC_PCIB,
77 /* PJ4 SLOT: 20, PIN: 4 */
78 TX4927_IRQ_IOC_PCIC}
79};
80
81static int pci_get_irq(const struct pci_dev *dev, int pin)
39int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
82{
83 unsigned char irq = pin;
84
40{
41 unsigned char irq = pin;
42
85 DBG("pci_get_irq: pin is %d\n", pin);
86 /* IRQ rotation */
87 irq--; /* 0-3 */
43 /* IRQ rotation */
44 irq--; /* 0-3 */
88 if (dev->bus->parent == NULL &&
89 PCI_SLOT(dev->devfn) == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
90 printk("Onboard PCI_SLOT(dev->devfn) is %d\n",
91 PCI_SLOT(dev->devfn));
92 /* IDSEL=A23 is tx4927 onboard pci slot */
93 irq = (irq + PCI_SLOT(dev->devfn)) % 4;
94 irq++; /* 1-4 */
95 DBG("irq is now %d\n", irq);
96
97 switch (irq) {
98 case 1:
99 irq = TX4927_IRQ_IOC_PCIA;
100 break;
101 case 2:
102 irq = TX4927_IRQ_IOC_PCIB;
103 break;
104 case 3:
105 irq = TX4927_IRQ_IOC_PCIC;
106 break;
107 case 4:
108 irq = TX4927_IRQ_IOC_PCID;
109 break;
110 }
45 if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
46 /* PCI CardSlot (IDSEL=A23) */
47 /* PCIA => PCIA */
48 irq = (irq + 0 + slot) % 4;
111 } else {
112 /* PCI Backplane */
49 } else {
50 /* PCI Backplane */
113 DBG("PCI Backplane PCI_SLOT(dev->devfn) is %d\n",
114 PCI_SLOT(dev->devfn));
115 irq = backplane_pci_irq[PCI_SLOT(dev->devfn) - 17][irq];
51 if (txx9_pci_option & TXX9_PCI_OPT_PICMG)
52 irq = (irq + 33 - slot) % 4;
53 else
54 irq = (irq + 3 + slot) % 4;
116 }
55 }
117 DBG("assigned irq %d\n", irq);
118 return irq;
119}
56 irq++; /* 1-4 */
120
57
121int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
122{
123 unsigned char irq;
124
125 printk("PCI Setup for pin %d \n", pin);
126
127 if (dev->device == 0x9130) /* IDE */
128 irq = 14;
129 else
130 irq = pci_get_irq(dev, pin);
131
58 switch (irq) {
59 case 1:
60 irq = RBTX4927_IRQ_IOC_PCIA;
61 break;
62 case 2:
63 irq = RBTX4927_IRQ_IOC_PCIB;
64 break;
65 case 3:
66 irq = RBTX4927_IRQ_IOC_PCIC;
67 break;
68 case 4:
69 irq = RBTX4927_IRQ_IOC_PCID;
70 break;
71 }
132 return irq;
133}
134
135/* Do platform specific device initialization at pci_enable_device() time */
136int pcibios_plat_dev_init(struct pci_dev *dev)
137{
138 return 0;
139}
72 return irq;
73}
74
75/* Do platform specific device initialization at pci_enable_device() time */
76int pcibios_plat_dev_init(struct pci_dev *dev)
77{
78 return 0;
79}