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comparison packages/io/pci/current/src/pci.c @ 1467:8ad4d297cbf8

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* src/pci.c (cyg_pci_get_device_info): Added fix for devices that only implement the bottom 16 bits of an IO BAR. This is allowed by the standard but is very rare and mostly present in older devices only. Without this cyg_pci_allocate_io_priv() gets confused.
author nickg
date Wed, 14 Jan 2004 15:39:43 +0000
parents efdacf0f8122
children 5dd2b854cc32
comparison
equal deleted inserted replaced
1466:4534df73d5ba 1467:8ad4d297cbf8
165 // Clear fields for next BAR - it's the upper 32 bits. 165 // Clear fields for next BAR - it's the upper 32 bits.
166 i++; 166 i++;
167 dev_info->base_size[i] = 0; 167 dev_info->base_size[i] = 0;
168 dev_info->base_map[i] = 0xffffffff; 168 dev_info->base_map[i] = 0xffffffff;
169 } 169 }
170 }
171
172 // Fix any IO devices that only implement the bottom 16
173 // bits of the the BAR. Just fill in these bits so it
174 // looks like a full 32 bit BAR.
175 if ((CYG_PCI_CFG_BAR_SPACE_IO ==
176 (size & CYG_PCI_CFG_BAR_SPACE_MASK)) &&
177 ((size & 0xFFFF0000) == 0)
178 )
179 {
180 dev_info->base_size[i] |= 0xFFFF0000;
170 } 181 }
171 } 182 }
172 dev_info->num_bars = bar_count; 183 dev_info->num_bars = bar_count;
173 } else { 184 } else {
174 // If the device is already configured. Fill in the base_map. 185 // If the device is already configured. Fill in the base_map.