This adds support for the HDD and DVD SATA controller on the xenon
southbridge.
It also disables ATA_TFLAG_POLLING in libata-core, which prevented the
DVD drive
from being detected. It needs to be investigated what exactly is wrong
here.
Signed-off-by: Felix Domke <tmbinc@xxxxxxxxxxxx>
---
drivers/ata/Kconfig | 8 +
drivers/ata/Makefile | 1
drivers/ata/libata-core.c | 2
drivers/ata/sata_xenon.c | 272
++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 282 insertions(+), 1 deletion(-)
Index: linux-2.6.20/drivers/ata/Kconfig
===================================================================
--- linux-2.6.20.orig/drivers/ata/Kconfig 2007-03-07 19:01:12.000000000
+0100
+++ linux-2.6.20/drivers/ata/Kconfig 2007-03-07 19:01:22.000000000 +0100
@@ -123,6 +123,14 @@
If unsure, say N.
+config SATA_XENON
+ tristate "Xenon SATA support"
+ depends on PCI
+ help
+ This option enables support for Xenon southbridge.
+
+ If unsure, say N.
+
config SATA_ULI
tristate "ULi Electronics SATA support"
depends on PCI
Index: linux-2.6.20/drivers/ata/Makefile
===================================================================
--- linux-2.6.20.orig/drivers/ata/Makefile 2007-03-07 19:01:12.000000000
+0100
+++ linux-2.6.20/drivers/ata/Makefile 2007-03-07 19:01:22.000000000 +0100
@@ -11,6 +11,7 @@
obj-$(CONFIG_SATA_VIA) += sata_via.o
obj-$(CONFIG_SATA_VITESSE) += sata_vsc.o
obj-$(CONFIG_SATA_SIS) += sata_sis.o
+obj-$(CONFIG_SATA_XENON) += sata_xenon.o
obj-$(CONFIG_SATA_SX4) += sata_sx4.o
obj-$(CONFIG_SATA_NV) += sata_nv.o
obj-$(CONFIG_SATA_ULI) += sata_uli.o
Index: linux-2.6.20/drivers/ata/libata-core.c
===================================================================
--- linux-2.6.20.orig/drivers/ata/libata-core.c 2007-03-07
19:01:12.000000000 +0100
+++ linux-2.6.20/drivers/ata/libata-core.c 2007-03-07 19:01:22.000000000
+0100
@@ -1478,7 +1478,7 @@
}
tf.protocol = ATA_PROT_PIO;
- tf.flags |= ATA_TFLAG_POLLING; /* for polling presence detection */
+// tf.flags |= ATA_TFLAG_POLLING; /* for polling presence detection */
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE,
id, sizeof(id[0]) * ATA_ID_WORDS);
Index: linux-2.6.20/drivers/ata/sata_xenon.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.20/drivers/ata/sata_xenon.c 2007-03-07 19:01:22.000000000
+0100
@@ -0,0 +1,272 @@
+/*
+ * sata_xenon.c - SATA support for xenon southbridge
+ *
+ * based on sata_sis.c, modifications by anonymous xbox360 hacker,
+ *
+ * Please ALWAYS copy linux-ide@xxxxxxxxxxxxxxx
+ * on emails.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ * libata documentation is available via 'make {ps|pdf}docs',
+ * as Documentation/DocBook/libata.*
+ *
+ */
+
+#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/interrupt.h>
+#include <linux/device.h>
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+
+#define DRV_NAME "sata_xenon"
+#define DRV_VERSION "0.1"
+
+ /* small note: it's completely unknown whether the xenon southbridge sata
+ is really based on SiS technology.
+ Most of SATA is standardized anyway.
+
+
+ So, we have these two pci devices, one for each port.
+
+ They have two BARs, one for the IDE registers (0..7,
+ altstatus/devctl is +0xA), and one for the BMDMA.
+
+ SCR seem to be sis-like in pci config space, but that should
+ be verified!
+
+ Note on the DVD-ROM part:
+
+ The drives usually require some tweaks to be usable under linux.
+
+ You either need to hack the scsi layer, or, in case of the GDR3120L,
+ set 'modeB' in the bootloader.
+ */
+
+enum {
+ /* PCI configuration registers */
+ SIS_SCR_BASE = 0xc0, /* sata0 phy SCR registers */
+};
+
+extern struct ata_probe_ent *ata_probe_ent_alloc(struct device *dev,
+ const struct ata_port_info *port);
+
+static int xenon_init_one (struct pci_dev *pdev, const struct
pci_device_id *ent);
+static u32 xenon_scr_read (struct ata_port *ap, unsigned int sc_reg);
+static void xenon_scr_write (struct ata_port *ap, unsigned int sc_reg,
u32 val);
+
+static const struct pci_device_id xenon_pci_tbl[] = {
+ { PCI_VDEVICE(MICROSOFT, 0x5803), 0 },
+ { PCI_VDEVICE(MICROSOFT, 0x5802), 0 },
+
+ { } /* terminate list */
+};
+
+static struct pci_driver xenon_pci_driver = {
+ .name = DRV_NAME,
+ .id_table = xenon_pci_tbl,
+ .probe = xenon_init_one,
+ .remove = ata_pci_remove_one,
+};
+
+static struct scsi_host_template xenon_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 = ATA_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,
+ .bios_param = ata_std_bios_param,
+};
+
+static const struct ata_port_operations xenon_ops = {
+ .port_disable = ata_port_disable,
+ .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,
+ .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_pio_data_xfer,
+ .freeze = ata_bmdma_freeze,
+ .thaw = ata_bmdma_thaw,
+ .error_handler = ata_bmdma_error_handler,
+ .post_internal_cmd = ata_bmdma_post_internal_cmd,
+ .irq_handler = ata_interrupt,
+ .irq_clear = ata_bmdma_irq_clear,
+ .scr_read = xenon_scr_read,
+ .scr_write = xenon_scr_write,
+ .port_start = ata_port_start,
+ .port_stop = ata_port_stop,
+ .host_stop = ata_host_stop,
+};
+
+static struct ata_port_info xenon_port_info = {
+ .sht = &xenon_sht,
+ .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
+ .pio_mask = 0x1f,
+ .mwdma_mask = 0x7,
+ .udma_mask = 0x7f,
+ .port_ops = &xenon_ops,
+};
+
+
+MODULE_DESCRIPTION("low-level driver for Xenon Southbridge SATA
controller");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, xenon_pci_tbl);
+MODULE_VERSION(DRV_VERSION);
+
+static unsigned int get_scr_cfg_addr(unsigned int port_no, unsigned int
sc_reg, int device)
+{
+ unsigned int addr = SIS_SCR_BASE + (4 * sc_reg);
+
+ return addr;
+}
+
+static u32 xenon_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
+{
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ unsigned int cfg_addr = get_scr_cfg_addr(ap->port_no, sc_reg,
pdev->device);
+ u32 val;
+
+ if (sc_reg == SCR_ERROR) /* doesn't exist in PCI cfg space */
+ return 0; /* assume no error */
+
+ pci_read_config_dword(pdev, cfg_addr, &val);
+
+ return val;
+}
+
+static void xenon_scr_cfg_write (struct ata_port *ap, unsigned int scr,
u32 val)
+{
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ unsigned int cfg_addr = get_scr_cfg_addr(ap->port_no, scr, pdev->device);
+
+ if (scr == SCR_ERROR) /* doesn't exist in PCI cfg space */
+ return;
+
+ pci_write_config_dword(pdev, cfg_addr, val);
+}
+
+static u32 xenon_scr_read (struct ata_port *ap, unsigned int sc_reg)
+{
+ if (sc_reg > SCR_CONTROL)
+ return 0xffffffffU;
+
+ return xenon_scr_cfg_read(ap, sc_reg);
+}
+
+static void xenon_scr_write (struct ata_port *ap, unsigned int sc_reg,
u32 val)
+{
+ if (sc_reg > SCR_CONTROL)
+ return;
+
+ xenon_scr_cfg_write(ap, sc_reg, val);
+}
+
+static int xenon_init_one (struct pci_dev *pdev, const struct
pci_device_id *ent)
+{
+ static int printed_version;
+ struct ata_probe_ent *probe_ent = NULL;
+ int rc;
+ int pci_dev_busy = 0;
+
+ if (!printed_version++)
+ dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
+
+ rc = pci_enable_device(pdev);
+ if (rc)
+ return rc;
+
+ rc = pci_request_regions(pdev, DRV_NAME);
+ if (rc) {
+ pci_dev_busy = 1;
+ goto err_out;
+ }
+
+ rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
+ if (rc)
+ goto err_out_regions;
+ rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
+ if (rc)
+ goto err_out_regions;
+
+ probe_ent = ata_probe_ent_alloc(pci_dev_to_dev(pdev), &xenon_port_info);
+ if (!probe_ent) {
+ rc = -ENOMEM;
+ goto err_out_regions;
+ }
+
+ probe_ent->irq = pdev->irq;
+ probe_ent->irq_flags = IRQF_SHARED;
+
+ probe_ent->port->cmd_addr = (long)ioremap(pci_resource_start(pdev, 0),
PAGE_SIZE);
+ probe_ent->port->altstatus_addr = probe_ent->port->cmd_addr + 0xa;
+ probe_ent->port->ctl_addr = probe_ent->port->cmd_addr + 0xa;
+ probe_ent->port->bmdma_addr = (long)ioremap(pci_resource_start(pdev,
1), PAGE_SIZE);
+ ata_std_ports(probe_ent->port);
+ probe_ent->n_ports = 1;
+
+ pci_set_master(pdev);
+ pci_intx(pdev, 1);
+
+ /* FIXME: check ata_device_add return value */
+ ata_device_add(probe_ent);
+ kfree(probe_ent);
+
+ return 0;
+
+err_out_regions:
+ pci_release_regions(pdev);
+
+err_out:
+ if (!pci_dev_busy)
+ pci_disable_device(pdev);
+ return rc;
+
+}
+
+static int __init xenon_init(void)
+{
+ return pci_register_driver(&xenon_pci_driver);
+}
+
+static void __exit xenon_exit(void)
+{
+ pci_unregister_driver(&xenon_pci_driver);
+}
+
+module_init(xenon_init);
+module_exit(xenon_exit);
+
--
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