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40 #include <fsl_mc_sys.h>
41 #include <fsl_mc_cmd.h>
43 #include <rte_spinlock.h>
45 /** User space framework uses MC Portal in shared mode. Following change
46 * introduces lock in MC FLIB
50 * A static spinlock initializer.
52 static rte_spinlock_t mc_portal_lock = RTE_SPINLOCK_INITIALIZER;
54 static int mc_status_to_error(enum mc_cmd_status status)
57 case MC_CMD_STATUS_OK:
59 case MC_CMD_STATUS_AUTH_ERR:
60 return -EACCES; /* Token error */
61 case MC_CMD_STATUS_NO_PRIVILEGE:
62 return -EPERM; /* Permission denied */
63 case MC_CMD_STATUS_DMA_ERR:
64 return -EIO; /* Input/Output error */
65 case MC_CMD_STATUS_CONFIG_ERR:
66 return -EINVAL; /* Device not configured */
67 case MC_CMD_STATUS_TIMEOUT:
68 return -ETIMEDOUT; /* Operation timed out */
69 case MC_CMD_STATUS_NO_RESOURCE:
70 return -ENAVAIL; /* Resource temporarily unavailable */
71 case MC_CMD_STATUS_NO_MEMORY:
72 return -ENOMEM; /* Cannot allocate memory */
73 case MC_CMD_STATUS_BUSY:
74 return -EBUSY; /* Device busy */
75 case MC_CMD_STATUS_UNSUPPORTED_OP:
76 return -ENOTSUP; /* Operation not supported by device */
77 case MC_CMD_STATUS_INVALID_STATE:
78 return -ENODEV; /* Invalid device state */
83 /* Not expected to reach here */
87 int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd)
89 enum mc_cmd_status status;
92 if (!mc_io || !mc_io->regs)
95 /* --- Call lock function here in case portal is shared --- */
96 rte_spinlock_lock(&mc_portal_lock);
98 mc_write_command(mc_io->regs, cmd);
100 /* Spin until status changes */
102 response = ioread64(mc_io->regs);
103 status = mc_cmd_read_status((struct mc_command *)&response);
105 /* --- Call wait function here to prevent blocking ---
106 * Change the loop condition accordingly to exit on timeout.
108 } while (status == MC_CMD_STATUS_READY);
110 /* Read the response back into the command buffer */
111 mc_read_response(mc_io->regs, cmd);
113 /* --- Call unlock function here in case portal is shared --- */
114 rte_spinlock_unlock(&mc_portal_lock);
116 return mc_status_to_error(status);