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parisc: PDT/firmware: Add support to read PDT on older PAT-machines

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Older machines with a PAT firmware (e.g. the rp5470) return their Page
Deallocation Table (PDT) info per cell via the PDC_PAT_MEM_PD_INFO PDC call.
This patch adds the necessary structures and wrappers to call firmware.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller
2017-08-04 19:12:39 +02:00
parent 24587380f6
commit 8a5aa00e6b
2 changed files with 53 additions and 8 deletions
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14
arch/parisc/include/asm/pdcpat.h
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@@ -223,6 +223,18 @@ struct pdc_pat_mem_retinfo { /* PDC_PAT_MEM/PDC_PAT_MEM_PD_INFO (return info) */
unsigned long clear_time; /* last PDT clear time (since Jan 1970) */
};
struct pdc_pat_mem_cell_pdt_retinfo { /* PDC_PAT_MEM/PDC_PAT_MEM_CELL_INFO */
u64 reserved:32;
u64 cs:1; /* clear status: cleared since the last call? */
u64 current_pdt_entries:15;
u64 ic:1; /* interleaving had to be changed ? */
u64 max_pdt_entries:15;
unsigned long good_mem;
unsigned long first_dbe_loc; /* first location of double bit error */
unsigned long clear_time; /* last PDT clear time (since Jan 1970) */
};
struct pdc_pat_mem_read_pd_retinfo { /* PDC_PAT_MEM/PDC_PAT_MEM_PD_READ */
unsigned long actual_count_bytes;
unsigned long pdt_entries;
@@ -325,6 +337,8 @@ extern int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *va
extern int pdc_pat_io_pci_cfg_write(unsigned long pci_addr, int pci_size, u32 val);
extern int pdc_pat_mem_pdt_info(struct pdc_pat_mem_retinfo *rinfo);
extern int pdc_pat_mem_pdt_cell_info(struct pdc_pat_mem_cell_pdt_retinfo *rinfo,
unsigned long cell);
extern int pdc_pat_mem_read_cell_pdt(struct pdc_pat_mem_read_pd_retinfo *pret,
unsigned long *pdt_entries_ptr, unsigned long max_entries);
extern int pdc_pat_mem_read_pd_pdt(struct pdc_pat_mem_read_pd_retinfo *pret,