7 DMA Resource Allocation incomplete
8 ----------------------------------
10 The current DMA resource Allocation provides no means of selecting the
11 suitability of a DMA controller based on it's supported modes of operation, as
12 opposed to the resource allocation mechanisms for master and slave windows:
14 struct vme_resource *vme_request_dma(struct device *dev);
18 struct vme_resource * vme_master_request(struct device *dev,
19 vme_address_t aspace, vme_cycle_t cycle, vme_width_t width);
21 The TSI148 can perform, VME-to-PCI, PCI-to-VME, PATTERN-to-VME, PATTERN-to-PCI,
22 VME-to-VME and PCI-to-PCI transfers. The CA91C142 can only provide VME-to-PCI
25 Add a mechanism to select a VME controller based on source/target type,
26 required aspace, cycle and width requirements.
29 Master window broadcast select mask
30 -----------------------------------
32 API currently provides no method to set or get Broadcast Select mask. Suggest
35 int vme_master_bmsk_set (struct vme_resource *res, int mask);
36 int vme_master_bmsk_get (struct vme_resource *res, int *mask);
42 Add optional timeout when waiting for an IACK.
48 The VME API provides no functions to access the buffer mapped into the CR/CSR
55 Whilst not part of the VME specification, they are provided by a number of
56 chips. They are currently not supported at all by the API.
62 - Rename vme_master_resource's "pci_resource" to be bus agnostic.
63 - Improve generic sanity checks (Such as does an offset and size fit within a
64 window and parameter checking).
72 - Driver can currently only support a single bridge.
73 - 2eSST Broadcast mode.
74 - Mailboxes unsupported.
75 - Improve error detection.
76 - Control of prefetch size, threshold.
80 Universe II (ca91c142)
81 ----------------------
83 - Driver can currently only support a single bridge.
85 - RMW transactions unsupported.
86 - Location Monitors unsupported.
87 - Mailboxes unsupported.
89 - Control of prefetch size, threshold.
97 Currently completely unsupported.