diff options
| -rw-r--r-- | drivers/firewire/ohci.c | 185 |
1 files changed, 183 insertions, 2 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index c026f46fc157..b983581cfe35 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -264,6 +264,8 @@ static char ohci_driver_name[] = KBUILD_MODNAME; #define PCI_DEVICE_ID_AGERE_FW643 0x5901 #define PCI_DEVICE_ID_JMICRON_JMB38X_FW 0x2380 #define PCI_DEVICE_ID_TI_TSB12LV22 0x8009 +#define PCI_DEVICE_ID_TI_TSB12LV26 0x8020 +#define PCI_DEVICE_ID_TI_TSB82AA2 0x8025 #define PCI_VENDOR_ID_PINNACLE_SYSTEMS 0x11bd #define QUIRK_CYCLE_TIMER 1 @@ -271,6 +273,7 @@ static char ohci_driver_name[] = KBUILD_MODNAME; #define QUIRK_BE_HEADERS 4 #define QUIRK_NO_1394A 8 #define QUIRK_NO_MSI 16 +#define QUIRK_TI_SLLZ059 32 /* In case of multiple matches in ohci_quirks[], only the first one is used. */ static const struct { @@ -300,6 +303,12 @@ static const struct { {PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_TSB12LV22, PCI_ANY_ID, QUIRK_CYCLE_TIMER | QUIRK_RESET_PACKET | QUIRK_NO_1394A}, + {PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_TSB12LV26, PCI_ANY_ID, + QUIRK_RESET_PACKET | QUIRK_TI_SLLZ059}, + + {PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_TSB82AA2, PCI_ANY_ID, + QUIRK_RESET_PACKET | QUIRK_TI_SLLZ059}, + {PCI_VENDOR_ID_TI, PCI_ANY_ID, PCI_ANY_ID, QUIRK_RESET_PACKET}, @@ -316,6 +325,7 @@ MODULE_PARM_DESC(quirks, "Chip quirks (default = 0" ", AR/selfID endianess = " __stringify(QUIRK_BE_HEADERS) ", no 1394a enhancements = " __stringify(QUIRK_NO_1394A) ", disable MSI = " __stringify(QUIRK_NO_MSI) + ", workaround for TI SLLZ059 errata = " __stringify(QUIRK_TI_SLLZ059) ")"); #define OHCI_PARAM_DEBUG_AT_AR 1 @@ -1714,6 +1724,114 @@ static u32 update_bus_time(struct fw_ohci *ohci) return ohci->bus_time | cycle_time_seconds; } +static int get_status_for_port(struct fw_ohci *ohci, int port_index) +{ + int reg; + + mutex_lock(&ohci->phy_reg_mutex); + reg = write_phy_reg(ohci, 7, port_index); + mutex_unlock(&ohci->phy_reg_mutex); + if (reg < 0) + return reg; + + mutex_lock(&ohci->phy_reg_mutex); + reg = read_phy_reg(ohci, 8); + mutex_unlock(&ohci->phy_reg_mutex); + if (reg < 0) + return reg; + + switch (reg & 0x0f) { + case 0x06: + return 2; /* is child node (connected to parent node) */ + case 0x0e: + return 3; /* is parent node (connected to child node) */ + } + return 1; /* not connected */ +} + +static int get_self_id_pos(struct fw_ohci *ohci, u32 self_id, + int self_id_count) +{ + int i; + u32 entry; + for (i = 0; i < self_id_count; i++) { + entry = ohci->self_id_buffer[i]; + if ((self_id & 0xff000000) == (entry & 0xff000000)) + return -1; + if ((self_id & 0xff000000) < (entry & 0xff000000)) + return i; + } + return i; +} + +/* + * This function implements a work around for the Texas Instruments PHY + * TSB41BA3D. This phy has a bug at least in combination with the TI + * LLCs TSB82AA2B and TSB12LV26. The selfid coming from the locally + * connected phy is not propagated into the selfid buffer of the OHCI + * (see http://www.ti.com/litv/pdf/sllz059 for details). + * The main idea is to construct the selfid ourselves. + */ + +static int find_and_insert_self_id(struct fw_ohci *ohci, int self_id_count) +{ + int reg; + int i; + int pos; + int status; + u32 self_id; + +/* + * preset bits in self_id + * + * link active: 0b1 + * speed: 0b11 + * bridge: 0b00 + * contender: 0b1 + * initiated reset: 0b0 + * more packets: 0b0 + */ + self_id = 0x8040C800; + + reg = reg_read(ohci, OHCI1394_NodeID); + if (!(reg & OHCI1394_NodeID_idValid)) { + fw_notify("node ID not valid, new bus reset in progress\n"); + return -EBUSY; + } + self_id |= ((reg & 0x3f) << 24); /* phy ID */ + + mutex_lock(&ohci->phy_reg_mutex); + reg = read_phy_reg(ohci, 4); + mutex_unlock(&ohci->phy_reg_mutex); + if (reg < 0) + return reg; + self_id |= ((reg & 0x07) << 8); /* power class */ + + mutex_lock(&ohci->phy_reg_mutex); + reg = read_phy_reg(ohci, 1); + mutex_unlock(&ohci->phy_reg_mutex); + if (reg < 0) + return reg; + self_id |= ((reg & 0x3f) << 16); /* gap count */ + + for (i = 0; i < 3; i++) { + status = get_status_for_port(ohci, i); + if (status < 0) + return status; + self_id |= ((status & 0x3) << (6 - (i * 2))); + } + + pos = get_self_id_pos(ohci, self_id, self_id_count); + if (pos >= 0) { + memmove(&(ohci->self_id_buffer[pos+1]), + &(ohci->self_id_buffer[pos]), + (self_id_count - pos) * sizeof(*ohci->self_id_buffer)); + ohci->self_id_buffer[pos] = self_id; + self_id_count++; + } + return self_id_count; +} + static void bus_reset_work(struct work_struct *work) { struct fw_ohci *ohci = @@ -1755,10 +1873,12 @@ static void bus_reset_work(struct work_struct *work) * bit extra to get the actual number of self IDs. */ self_id_count = (reg >> 3) & 0xff; - if (self_id_count == 0 || self_id_count > 252) { + + if (self_id_count > 252) { fw_notify("inconsistent self IDs\n"); return; } + generation = (cond_le32_to_cpu(ohci->self_id_cpu[0]) >> 16) & 0xff; rmb(); @@ -1770,6 +1890,19 @@ static void bus_reset_work(struct work_struct *work) ohci->self_id_buffer[j] = cond_le32_to_cpu(ohci->self_id_cpu[i]); } + + if (ohci->quirks & QUIRK_TI_SLLZ059) { + self_id_count = find_and_insert_self_id(ohci, self_id_count); + if (self_id_count < 0) { + fw_notify("could not construct local self IDs\n"); + return; + } + } + + if (self_id_count == 0) { + fw_notify("inconsistent self IDs\n"); + return; + } rmb(); /* @@ -2050,13 +2183,50 @@ static int configure_1394a_enhancements(struct fw_ohci *ohci) return 0; } +#define TSB41BA3D_VID 0x00080028 +#define TSB41BA3D_PID 0x00833005 + +static int probe_tsb41ba3d(struct fw_ohci *ohci) +{ + int reg; + int i; + int vendor_id; + int product_id; + + reg = read_phy_reg(ohci, 2); + if (reg < 0) + return reg; + + if ((reg & PHY_EXTENDED_REGISTERS) == PHY_EXTENDED_REGISTERS) { + vendor_id = 0; + for (i = 10; i < 13; i++) { + reg = read_paged_phy_reg(ohci, 1, i); + if (reg < 0) + return reg; + vendor_id = (vendor_id << 8) | reg; + } + product_id = 0; + for (i = 13; i < 16; i++) { + reg = read_paged_phy_reg(ohci, 1, i); + if (reg < 0) + return reg; + product_id = (product_id << 8) | reg; + } + + if ((vendor_id == TSB41BA3D_VID) && + (product_id == TSB41BA3D_PID)) + return 1; + } + return 0; +} + static int ohci_enable(struct fw_card *card, const __be32 *config_rom, size_t length) { struct fw_ohci *ohci = fw_ohci(card); struct pci_dev *dev = to_pci_dev(card->device); u32 lps, seconds, version, irqs; - int i, ret; + int i, ret, tsb41ba3d_found; if (software_reset(ohci)) { fw_error("Failed to reset ohci card.\n"); @@ -2087,6 +2257,17 @@ static int ohci_enable(struct fw_card *card, return -EIO; } + if (ohci->quirks & QUIRK_TI_SLLZ059) { + tsb41ba3d_found = probe_tsb41ba3d(ohci); + if (tsb41ba3d_found < 0) + return tsb41ba3d_found; + if (!tsb41ba3d_found) { + fw_notify("No TSB41BA3D found, " + "resetting QUIRK_TI_SLLZ059\n"); + ohci->quirks &= ~QUIRK_TI_SLLZ059; + } + } + reg_write(ohci, OHCI1394_HCControlClear, OHCI1394_HCControl_noByteSwapData); |