#define DBGMSG(fmt, args...) \
printk(KERN_INFO "%s: fw-host%d: " fmt "\n" , OHCI1394_DRIVER_NAME, ohci->host->id , ## args)
#else
-#define DBGMSG(fmt, args...)
+#define DBGMSG(fmt, args...) do {} while (0)
#endif
#ifdef CONFIG_IEEE1394_OHCI_DMA_DEBUG
--global_outstanding_dmas, ## args)
static int global_outstanding_dmas = 0;
#else
-#define OHCI_DMA_ALLOC(fmt, args...)
-#define OHCI_DMA_FREE(fmt, args...)
+#define OHCI_DMA_ALLOC(fmt, args...) do {} while (0)
+#define OHCI_DMA_FREE(fmt, args...) do {} while (0)
#endif
/* print general (card independent) information */
static void ohci1394_pci_remove(struct pci_dev *pdev);
#ifndef __LITTLE_ENDIAN
-static unsigned hdr_sizes[] =
-{
+const static size_t hdr_sizes[] = {
3, /* TCODE_WRITEQ */
4, /* TCODE_WRITEB */
3, /* TCODE_WRITE_RESPONSE */
- 0, /* ??? */
+ 0, /* reserved */
3, /* TCODE_READQ */
4, /* TCODE_READB */
3, /* TCODE_READQ_RESPONSE */
4, /* TCODE_READB_RESPONSE */
- 1, /* TCODE_CYCLE_START (???) */
+ 1, /* TCODE_CYCLE_START */
4, /* TCODE_LOCK_REQUEST */
2, /* TCODE_ISO_DATA */
4, /* TCODE_LOCK_RESPONSE */
+ /* rest is reserved or link-internal */
};
-/* Swap headers */
-static inline void packet_swab(quadlet_t *data, int tcode)
+static inline void header_le32_to_cpu(quadlet_t *data, unsigned char tcode)
{
- size_t size = hdr_sizes[tcode];
+ size_t size;
- if (tcode > TCODE_LOCK_RESPONSE || hdr_sizes[tcode] == 0)
+ if (unlikely(tcode >= ARRAY_SIZE(hdr_sizes)))
return;
+ size = hdr_sizes[tcode];
while (size--)
- data[size] = swab32(data[size]);
+ data[size] = le32_to_cpu(data[size]);
}
#else
-/* Don't waste cycles on same sex byte swaps */
-#define packet_swab(w,x)
+#define header_le32_to_cpu(w,x) do {} while (0)
#endif /* !LITTLE_ENDIAN */
/***********************************
/* Global initialization */
static void ohci_initialize(struct ti_ohci *ohci)
{
- char irq_buf[16];
quadlet_t buf;
int num_ports, i;
reg_write(ohci, OHCI1394_HCControlSet, OHCI1394_HCControl_linkEnable);
buf = reg_read(ohci, OHCI1394_Version);
- sprintf (irq_buf, "%d", ohci->dev->irq);
- PRINT(KERN_INFO, "OHCI-1394 %d.%d (PCI): IRQ=[%s] "
+ PRINT(KERN_INFO, "OHCI-1394 %d.%d (PCI): IRQ=[%d] "
"MMIO=[%llx-%llx] Max Packet=[%d] IR/IT contexts=[%d/%d]",
((((buf) >> 16) & 0xf) + (((buf) >> 20) & 0xf) * 10),
- ((((buf) >> 4) & 0xf) + ((buf) & 0xf) * 10), irq_buf,
+ ((((buf) >> 4) & 0xf) + ((buf) & 0xf) * 10), ohci->dev->irq,
(unsigned long long)pci_resource_start(ohci->dev, 0),
(unsigned long long)pci_resource_start(ohci->dev, 0) + OHCI1394_REGISTER_SIZE - 1,
ohci->max_packet_size,
d->prg_cpu[idx]->data[2] = packet->header[2];
d->prg_cpu[idx]->data[3] = packet->header[3];
}
- packet_swab(d->prg_cpu[idx]->data, packet->tcode);
+ header_le32_to_cpu(d->prg_cpu[idx]->data, packet->tcode);
}
if (packet->data_size) { /* block transmit */
d->prg_cpu[idx]->data[0] = packet->speed_code<<16 |
(packet->header[0] & 0xFFFF);
d->prg_cpu[idx]->data[1] = packet->header[0] & 0xFFFF0000;
- packet_swab(d->prg_cpu[idx]->data, packet->tcode);
+ header_le32_to_cpu(d->prg_cpu[idx]->data, packet->tcode);
d->prg_cpu[idx]->begin.control =
cpu_to_le32(DMA_CTL_OUTPUT_MORE |
int ctx;
int ret = -ENOMEM;
- recv = kmalloc(sizeof(*recv), SLAB_KERNEL);
+ recv = kmalloc(sizeof(*recv), GFP_KERNEL);
if (!recv)
return -ENOMEM;
int ctx;
int ret = -ENOMEM;
- xmit = kmalloc(sizeof(*xmit), SLAB_KERNEL);
+ xmit = kmalloc(sizeof(*xmit), GFP_KERNEL);
if (!xmit)
return -ENOMEM;
spin_unlock_irqrestore(&ohci->iso_tasklet_list_lock, flags);
}
-static irqreturn_t ohci_irq_handler(int irq, void *dev_id,
- struct pt_regs *regs_are_unused)
+static irqreturn_t ohci_irq_handler(int irq, void *dev_id)
{
quadlet_t event, node_id;
struct ti_ohci *ohci = (struct ti_ohci *)dev_id;
* Determine the length of a packet in the buffer
* Optimization suggested by Pascal Drolet <pascal.drolet@informission.ca>
*/
-static __inline__ int packet_length(struct dma_rcv_ctx *d, int idx, quadlet_t *buf_ptr,
- int offset, unsigned char tcode, int noswap)
+static inline int packet_length(struct dma_rcv_ctx *d, int idx,
+ quadlet_t *buf_ptr, int offset,
+ unsigned char tcode, int noswap)
{
int length = -1;
* bus reset. We always ignore it. */
if (tcode != OHCI1394_TCODE_PHY) {
if (!ohci->no_swap_incoming)
- packet_swab(d->spb, tcode);
+ header_le32_to_cpu(d->spb, tcode);
DBGMSG("Packet received from node"
" %d ack=0x%02X spd=%d tcode=0x%X"
" length=%d ctx=%d tlabel=%d",
(cond_le32_to_cpu(d->spb[length/4-1], ohci->no_swap_incoming)>>16)&0x1f,
(cond_le32_to_cpu(d->spb[length/4-1], ohci->no_swap_incoming)>>21)&0x3,
tcode, length, d->ctx,
- (cond_le32_to_cpu(d->spb[0], ohci->no_swap_incoming)>>10)&0x3f);
+ (d->spb[0]>>10)&0x3f);
ack = (((cond_le32_to_cpu(d->spb[length/4-1], ohci->no_swap_incoming)>>16)&0x1f)
== 0x11) ? 1 : 0;
return -ENOMEM;
}
- d->prg_cpu[i] = pci_pool_alloc(d->prg_pool, SLAB_KERNEL, d->prg_bus+i);
+ d->prg_cpu[i] = pci_pool_alloc(d->prg_pool, GFP_KERNEL, d->prg_bus+i);
OHCI_DMA_ALLOC("pool dma_rcv prg[%d]", i);
if (d->prg_cpu[i] != NULL) {
OHCI_DMA_ALLOC("dma_rcv prg pool");
for (i = 0; i < d->num_desc; i++) {
- d->prg_cpu[i] = pci_pool_alloc(d->prg_pool, SLAB_KERNEL, d->prg_bus+i);
+ d->prg_cpu[i] = pci_pool_alloc(d->prg_pool, GFP_KERNEL, d->prg_bus+i);
OHCI_DMA_ALLOC("pool dma_trm prg[%d]", i);
if (d->prg_cpu[i] != NULL) {
struct ti_ohci *ohci; /* shortcut to currently handled device */
resource_size_t ohci_base;
+#ifdef CONFIG_PPC_PMAC
+ /* Necessary on some machines if ohci1394 was loaded/ unloaded before */
+ if (machine_is(powermac)) {
+ struct device_node *ofn = pci_device_to_OF_node(dev);
+
+ if (ofn) {
+ pmac_call_feature(PMAC_FTR_1394_CABLE_POWER, ofn, 0, 1);
+ pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 1);
+ }
+ }
+#endif /* CONFIG_PPC_PMAC */
+
if (pci_enable_device(dev))
FAIL(-ENXIO, "Failed to enable OHCI hardware");
pci_set_master(dev);
#endif
#ifdef CONFIG_PPC_PMAC
- /* On UniNorth, power down the cable and turn off the chip
- * clock when the module is removed to save power on
- * laptops. Turning it back ON is done by the arch code when
- * pci_enable_device() is called */
- {
- struct device_node* of_node;
+ /* On UniNorth, power down the cable and turn off the chip clock
+ * to save power on laptops */
+ if (machine_is(powermac)) {
+ struct device_node* ofn = pci_device_to_OF_node(ohci->dev);
- of_node = pci_device_to_OF_node(ohci->dev);
- if (of_node) {
- pmac_call_feature(PMAC_FTR_1394_ENABLE, of_node, 0, 0);
- pmac_call_feature(PMAC_FTR_1394_CABLE_POWER, of_node, 0, 0);
+ if (ofn) {
+ pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 0);
+ pmac_call_feature(PMAC_FTR_1394_CABLE_POWER, ofn, 0, 0);
}
}
#endif /* CONFIG_PPC_PMAC */
put_device(dev);
}
-
-static int ohci1394_pci_resume (struct pci_dev *pdev)
+#ifdef CONFIG_PM
+static int ohci1394_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
+ int err;
+ struct ti_ohci *ohci = pci_get_drvdata(pdev);
+
+ printk(KERN_INFO "%s does not fully support suspend and resume yet\n",
+ OHCI1394_DRIVER_NAME);
+
+ if (!ohci) {
+ printk(KERN_ERR "%s: tried to suspend nonexisting host\n",
+ OHCI1394_DRIVER_NAME);
+ return -ENXIO;
+ }
+ DBGMSG("suspend called");
+
+ /* Clear the async DMA contexts and stop using the controller */
+ hpsb_bus_reset(ohci->host);
+
+ /* See ohci1394_pci_remove() for comments on this sequence */
+ reg_write(ohci, OHCI1394_ConfigROMhdr, 0);
+ reg_write(ohci, OHCI1394_BusOptions,
+ (reg_read(ohci, OHCI1394_BusOptions) & 0x0000f007) |
+ 0x00ff0000);
+ reg_write(ohci, OHCI1394_IntMaskClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IntEventClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IsoXmitIntMaskClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IsoXmitIntEventClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IsoRecvIntMaskClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IsoRecvIntEventClear, 0xffffffff);
+ set_phy_reg(ohci, 4, ~0xc0 & get_phy_reg(ohci, 4));
+ reg_write(ohci, OHCI1394_LinkControlClear, 0xffffffff);
+ ohci_devctl(ohci->host, RESET_BUS, LONG_RESET_NO_FORCE_ROOT);
+ ohci_soft_reset(ohci);
+
+ err = pci_save_state(pdev);
+ if (err) {
+ PRINT(KERN_ERR, "pci_save_state failed with %d", err);
+ return err;
+ }
+ err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
+ if (err)
+ DBGMSG("pci_set_power_state failed with %d", err);
+
+/* PowerMac suspend code comes last */
#ifdef CONFIG_PPC_PMAC
if (machine_is(powermac)) {
- struct device_node *of_node;
+ struct device_node *ofn = pci_device_to_OF_node(pdev);
- /* Re-enable 1394 */
- of_node = pci_device_to_OF_node (pdev);
- if (of_node)
- pmac_call_feature (PMAC_FTR_1394_ENABLE, of_node, 0, 1);
+ if (ofn)
+ pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 0);
}
#endif /* CONFIG_PPC_PMAC */
- pci_restore_state(pdev);
- pci_enable_device(pdev);
-
return 0;
}
-
-static int ohci1394_pci_suspend (struct pci_dev *pdev, pm_message_t state)
+static int ohci1394_pci_resume(struct pci_dev *pdev)
{
- pci_save_state(pdev);
+ int err;
+ struct ti_ohci *ohci = pci_get_drvdata(pdev);
+
+ if (!ohci) {
+ printk(KERN_ERR "%s: tried to resume nonexisting host\n",
+ OHCI1394_DRIVER_NAME);
+ return -ENXIO;
+ }
+ DBGMSG("resume called");
+/* PowerMac resume code comes first */
#ifdef CONFIG_PPC_PMAC
if (machine_is(powermac)) {
- struct device_node *of_node;
+ struct device_node *ofn = pci_device_to_OF_node(pdev);
- /* Disable 1394 */
- of_node = pci_device_to_OF_node (pdev);
- if (of_node)
- pmac_call_feature(PMAC_FTR_1394_ENABLE, of_node, 0, 0);
+ if (ofn)
+ pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 1);
}
-#endif
+#endif /* CONFIG_PPC_PMAC */
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ err = pci_enable_device(pdev);
+ if (err) {
+ PRINT(KERN_ERR, "pci_enable_device failed with %d", err);
+ return err;
+ }
+
+ /* See ohci1394_pci_probe() for comments on this sequence */
+ ohci_soft_reset(ohci);
+ reg_write(ohci, OHCI1394_HCControlSet, OHCI1394_HCControl_LPS);
+ reg_write(ohci, OHCI1394_IntEventClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IntMaskClear, 0xffffffff);
+ mdelay(50);
+ ohci_initialize(ohci);
return 0;
}
-
+#endif /* CONFIG_PM */
#define PCI_CLASS_FIREWIRE_OHCI ((PCI_CLASS_SERIAL_FIREWIRE << 8) | 0x10)
.id_table = ohci1394_pci_tbl,
.probe = ohci1394_pci_probe,
.remove = ohci1394_pci_remove,
+#ifdef CONFIG_PM
.resume = ohci1394_pci_resume,
.suspend = ohci1394_pci_suspend,
+#endif
};
/***********************************
return pci_register_driver(&ohci1394_pci_driver);
}
-module_init(ohci1394_init);
+/* Register before most other device drivers.
+ * Useful for remote debugging via physical DMA, e.g. using firescope. */
+fs_initcall(ohci1394_init);
module_exit(ohci1394_cleanup);
git://git.onelab.eu / linux-2.6.git / blobdiff