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authorAlexandre Bounine <alexandre.bounine@idt.com>2010-05-27 01:43:59 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-27 20:12:50 +0400
commite5cabeb3d60f9cd3e3950aff071319ae0e2d08d8 (patch)
treee866f1a9076608630a40f21f0a50c073dedb0e57 /include/linux
parent818a04a0bb93643d57dd8935815de2ff307b58a3 (diff)
downloadlinux-e5cabeb3d60f9cd3e3950aff071319ae0e2d08d8.tar.xz
rapidio: add Port-Write handling for EM
Add RapidIO Port-Write message handling in the context of Error Management Extensions Specification Rev.1.3. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Tested-by: Thomas Moll <thomas.moll@sysgo.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/rio.h42
-rw-r--r--include/linux/rio_drv.h6
-rw-r--r--include/linux/rio_regs.h61
3 files changed, 106 insertions, 3 deletions
diff --git a/include/linux/rio.h b/include/linux/rio.h
index 29d98997c6c8..4ec31f44f406 100644
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -64,10 +64,13 @@
#define RIO_INB_MBOX_RESOURCE 1
#define RIO_OUTB_MBOX_RESOURCE 2
+#define RIO_PW_MSG_SIZE 64
+
extern struct bus_type rio_bus_type;
extern struct list_head rio_devices; /* list of all devices */
struct rio_mport;
+union rio_pw_msg;
/**
* struct rio_dev - RIO device info
@@ -107,11 +110,15 @@ struct rio_dev {
u32 swpinfo; /* Only used for switches */
u32 src_ops;
u32 dst_ops;
+ u32 comp_tag;
+ u32 phys_efptr;
+ u32 em_efptr;
u64 dma_mask;
struct rio_switch *rswitch; /* RIO switch info */
struct rio_driver *driver; /* RIO driver claiming this device */
struct device dev; /* LDM device structure */
struct resource riores[RIO_MAX_DEV_RESOURCES];
+ int (*pwcback) (struct rio_dev *rdev, union rio_pw_msg *msg, int step);
u16 destid;
};
@@ -211,9 +218,12 @@ struct rio_net {
* @hopcount: Hopcount to this switch
* @destid: Associated destid in the path
* @route_table: Copy of switch routing table
+ * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0
* @add_entry: Callback for switch-specific route add function
* @get_entry: Callback for switch-specific route get function
* @clr_table: Callback for switch-specific clear route table function
+ * @em_init: Callback for switch-specific error management initialization function
+ * @em_handle: Callback for switch-specific error management handler function
*/
struct rio_switch {
struct list_head node;
@@ -221,12 +231,15 @@ struct rio_switch {
u16 hopcount;
u16 destid;
u8 *route_table;
+ u32 port_ok;
int (*add_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
u16 table, u16 route_destid, u8 route_port);
int (*get_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
u16 table, u16 route_destid, u8 * route_port);
int (*clr_table) (struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table);
+ int (*em_init) (struct rio_dev *dev);
+ int (*em_handle) (struct rio_dev *dev, u8 swport);
};
/* Low-level architecture-dependent routines */
@@ -238,6 +251,7 @@ struct rio_switch {
* @cread: Callback to perform network read of config space.
* @cwrite: Callback to perform network write of config space.
* @dsend: Callback to send a doorbell message.
+ * @pwenable: Callback to enable/disable port-write message handling.
*/
struct rio_ops {
int (*lcread) (struct rio_mport *mport, int index, u32 offset, int len,
@@ -249,6 +263,7 @@ struct rio_ops {
int (*cwrite) (struct rio_mport *mport, int index, u16 destid,
u8 hopcount, u32 offset, int len, u32 data);
int (*dsend) (struct rio_mport *mport, int index, u16 destid, u16 data);
+ int (*pwenable) (struct rio_mport *mport, int enable);
};
#define RIO_RESOURCE_MEM 0x00000100
@@ -325,6 +340,33 @@ struct rio_route_ops {
u16 table);
};
+/**
+ * struct rio_em_ops - Per-switch error management operations
+ * @vid: RIO vendor ID
+ * @did: RIO device ID
+ * @init_hook: Switch specific error management initialization (may be NULL)
+ * @handler_hook: Switch specific error management handler (may be NULL)
+ *
+ * Defines the operations that are necessary to initialize and handle
+ * error management events for a particular RIO switch device.
+ */
+struct rio_em_ops {
+ u16 vid, did;
+ int (*init_hook) (struct rio_dev *dev);
+ int (*handler_hook) (struct rio_dev *dev, u8 swport);
+};
+
+union rio_pw_msg {
+ struct {
+ u32 comptag; /* Component Tag CSR */
+ u32 errdetect; /* Port N Error Detect CSR */
+ u32 is_port; /* Implementation specific + PortID */
+ u32 ltlerrdet; /* LTL Error Detect CSR */
+ u32 padding[12];
+ } em;
+ u32 raw[RIO_PW_MSG_SIZE/sizeof(u32)];
+};
+
/* Architecture and hardware-specific functions */
extern int rio_init_mports(void);
extern void rio_register_mport(struct rio_mport *);
diff --git a/include/linux/rio_drv.h b/include/linux/rio_drv.h
index c93a58a40033..edc55da717b3 100644
--- a/include/linux/rio_drv.h
+++ b/include/linux/rio_drv.h
@@ -413,6 +413,12 @@ void rio_release_regions(struct rio_dev *);
int rio_request_region(struct rio_dev *, int, char *);
void rio_release_region(struct rio_dev *, int);
+/* Port-Write management */
+extern int rio_request_inb_pwrite(struct rio_dev *,
+ int (*)(struct rio_dev *, union rio_pw_msg*, int));
+extern int rio_release_inb_pwrite(struct rio_dev *);
+extern int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg);
+
/* LDM support */
int rio_register_driver(struct rio_driver *);
void rio_unregister_driver(struct rio_driver *);
diff --git a/include/linux/rio_regs.h b/include/linux/rio_regs.h
index 4bfb0dcfac7c..96ba2159d9fe 100644
--- a/include/linux/rio_regs.h
+++ b/include/linux/rio_regs.h
@@ -192,10 +192,14 @@
#define RIO_EFB_PAR_EP_ID 0x0001 /* [IV] LP/LVDS EP Devices */
#define RIO_EFB_PAR_EP_REC_ID 0x0002 /* [IV] LP/LVDS EP Recovery Devices */
#define RIO_EFB_PAR_EP_FREE_ID 0x0003 /* [IV] LP/LVDS EP Free Devices */
+#define RIO_EFB_SER_EP_ID_V13P 0x0001 /* [VI] LP/Serial EP Devices, RapidIO Spec ver 1.3 and above */
+#define RIO_EFB_SER_EP_REC_ID_V13P 0x0002 /* [VI] LP/Serial EP Recovery Devices, RapidIO Spec ver 1.3 and above */
+#define RIO_EFB_SER_EP_FREE_ID_V13P 0x0003 /* [VI] LP/Serial EP Free Devices, RapidIO Spec ver 1.3 and above */
#define RIO_EFB_SER_EP_ID 0x0004 /* [VI] LP/Serial EP Devices */
#define RIO_EFB_SER_EP_REC_ID 0x0005 /* [VI] LP/Serial EP Recovery Devices */
#define RIO_EFB_SER_EP_FREE_ID 0x0006 /* [VI] LP/Serial EP Free Devices */
#define RIO_EFB_SER_EP_FREC_ID 0x0009 /* [VI] LP/Serial EP Free Recovery Devices */
+#define RIO_EFB_ERR_MGMNT 0x0007 /* [VIII] Error Management Extensions */
/*
* Physical 8/16 LP-LVDS
@@ -211,15 +215,66 @@
#define RIO_PORT_MNT_HEADER 0x0000
#define RIO_PORT_REQ_CTL_CSR 0x0020
#define RIO_PORT_RSP_CTL_CSR 0x0024 /* 0x0001/0x0002 */
+#define RIO_PORT_LINKTO_CTL_CSR 0x0020 /* Serial */
+#define RIO_PORT_RSPTO_CTL_CSR 0x0024 /* Serial */
#define RIO_PORT_GEN_CTL_CSR 0x003c
#define RIO_PORT_GEN_HOST 0x80000000
#define RIO_PORT_GEN_MASTER 0x40000000
#define RIO_PORT_GEN_DISCOVERED 0x20000000
#define RIO_PORT_N_MNT_REQ_CSR(x) (0x0040 + x*0x20) /* 0x0002 */
#define RIO_PORT_N_MNT_RSP_CSR(x) (0x0044 + x*0x20) /* 0x0002 */
+#define RIO_PORT_N_MNT_RSP_RVAL 0x80000000 /* Response Valid */
+#define RIO_PORT_N_MNT_RSP_ASTAT 0x000003e0 /* ackID Status */
+#define RIO_PORT_N_MNT_RSP_LSTAT 0x0000001f /* Link Status */
#define RIO_PORT_N_ACK_STS_CSR(x) (0x0048 + x*0x20) /* 0x0002 */
-#define RIO_PORT_N_ERR_STS_CSR(x) (0x58 + x*0x20)
-#define PORT_N_ERR_STS_PORT_OK 0x00000002
-#define RIO_PORT_N_CTL_CSR(x) (0x5c + x*0x20)
+#define RIO_PORT_N_ACK_CLEAR 0x80000000
+#define RIO_PORT_N_ACK_INBOUND 0x1f000000
+#define RIO_PORT_N_ACK_OUTSTAND 0x00001f00
+#define RIO_PORT_N_ACK_OUTBOUND 0x0000001f
+#define RIO_PORT_N_ERR_STS_CSR(x) (0x0058 + x*0x20)
+#define RIO_PORT_N_ERR_STS_PW_OUT_ES 0x00010000 /* Output Error-stopped */
+#define RIO_PORT_N_ERR_STS_PW_INP_ES 0x00000100 /* Input Error-stopped */
+#define RIO_PORT_N_ERR_STS_PW_PEND 0x00000010 /* Port-Write Pending */
+#define RIO_PORT_N_ERR_STS_PORT_ERR 0x00000004
+#define RIO_PORT_N_ERR_STS_PORT_OK 0x00000002
+#define RIO_PORT_N_ERR_STS_PORT_UNINIT 0x00000001
+#define RIO_PORT_N_ERR_STS_CLR_MASK 0x07120204
+#define RIO_PORT_N_CTL_CSR(x) (0x005c + x*0x20)
+#define RIO_PORT_N_CTL_PWIDTH 0xc0000000
+#define RIO_PORT_N_CTL_PWIDTH_1 0x00000000
+#define RIO_PORT_N_CTL_PWIDTH_4 0x40000000
+#define RIO_PORT_N_CTL_LOCKOUT 0x00000002
+
+/*
+ * Error Management Extensions (RapidIO 1.3+, Part 8)
+ *
+ * Extended Features Block ID=0x0007
+ */
+
+/* General EM Registers (Common for all Ports) */
+
+#define RIO_EM_EFB_HEADER 0x000 /* Error Management Extensions Block Header */
+#define RIO_EM_LTL_ERR_DETECT 0x008 /* Logical/Transport Layer Error Detect CSR */
+#define RIO_EM_LTL_ERR_EN 0x00c /* Logical/Transport Layer Error Enable CSR */
+#define RIO_EM_LTL_HIADDR_CAP 0x010 /* Logical/Transport Layer High Address Capture CSR */
+#define RIO_EM_LTL_ADDR_CAP 0x014 /* Logical/Transport Layer Address Capture CSR */
+#define RIO_EM_LTL_DEVID_CAP 0x018 /* Logical/Transport Layer Device ID Capture CSR */
+#define RIO_EM_LTL_CTRL_CAP 0x01c /* Logical/Transport Layer Control Capture CSR */
+#define RIO_EM_PW_TGT_DEVID 0x028 /* Port-write Target deviceID CSR */
+#define RIO_EM_PKT_TTL 0x02c /* Packet Time-to-live CSR */
+
+/* Per-Port EM Registers */
+
+#define RIO_EM_PN_ERR_DETECT(x) (0x040 + x*0x40) /* Port N Error Detect CSR */
+#define REM_PED_IMPL_SPEC 0x80000000
+#define REM_PED_LINK_TO 0x00000001
+#define RIO_EM_PN_ERRRATE_EN(x) (0x044 + x*0x40) /* Port N Error Rate Enable CSR */
+#define RIO_EM_PN_ATTRIB_CAP(x) (0x048 + x*0x40) /* Port N Attributes Capture CSR */
+#define RIO_EM_PN_PKT_CAP_0(x) (0x04c + x*0x40) /* Port N Packet/Control Symbol Capture 0 CSR */
+#define RIO_EM_PN_PKT_CAP_1(x) (0x050 + x*0x40) /* Port N Packet Capture 1 CSR */
+#define RIO_EM_PN_PKT_CAP_2(x) (0x054 + x*0x40) /* Port N Packet Capture 2 CSR */
+#define RIO_EM_PN_PKT_CAP_3(x) (0x058 + x*0x40) /* Port N Packet Capture 3 CSR */
+#define RIO_EM_PN_ERRRATE(x) (0x068 + x*0x40) /* Port N Error Rate CSR */
+#define RIO_EM_PN_ERRRATE_TR(x) (0x06c + x*0x40) /* Port N Error Rate Threshold CSR */
#endif /* LINUX_RIO_REGS_H */